Installing Satellite Server from a Disconnected Network

Red Hat Satellite 6.6

Installing Red Hat Satellite Server from a Disconnected Network

Red Hat Satellite Documentation Team

Abstract

This guide describes how to install Red Hat Satellite from a disconnected network, perform initial configuration, and configure external services.

Chapter 1. Preparing your environment for installation

1.1. System Requirements

The following requirements apply to the networked base system:

  • x86_64 architecture
  • The latest version of Red Hat Enterprise Linux 7 Server
  • 4-core 2.0 GHz CPU at a minimum
  • A minimum of 20 GB memory is required for Satellite Server to function. In addition, a minimum of 4 GB of swap space is also recommended. Satellite running with less memory than the minimum value might not operate correctly.
  • A unique host name, which can contain lower-case letters, numbers, dots (.) and hyphens (-)
  • A current Red Hat Satellite subscription
  • Administrative user (root) access
  • A system umask of 0022
  • Full forward and reverse DNS resolution using a fully-qualified domain name

Before you install Satellite Server, ensure that your environment meets the requirements for installation.

Satellite Server must be installed on a freshly provisioned system that serves no other function except to run Satellite Server. The freshly provisioned system must not have the following users provided by external identity providers to avoid conflicts with the local users that Satellite Server creates:

  • postgres
  • mongodb
  • apache
  • tomcat
  • foreman
  • foreman-proxy
  • qpidd
  • qdrouterd
  • squid
  • puppet
Note

The Red Hat Satellite Server and Capsule Server versions must match. For example, a Satellite 6.2 Server cannot run a 6.6 Capsule Server and a Satellite 6.6 Server cannot run a 6.2 Capsule Server. Mismatching Satellite Server and Capsule Server versions results in the Capsule Server failing silently.

Note

Self-registered Satellites are not supported.

If you have a large number of content hosts, see Large Deployment Considerations to ensure that your environment is set up appropriately.

Certified hypervisors

Satellite Server is fully supported on both physical systems and virtual machines that run on hypervisors that are supported to run Red Hat Enterprise Linux. For more information about certified hypervisors, see Which hypervisors are certified to run Red Hat Enterprise Linux?

FIPS Mode

You can install Satellite Server on a Red Hat Enterprise Linux system that is operating in FIPS mode. For more information, see Enabling FIPS Mode in the Red Hat Enterprise Linux Security Guide.

1.2. Storage Requirements and Guidelines

This section lists minimum storage requirements and provides storage guidelines for Satellite Server and Capsule Server installation.

1.2.1. Storage Requirements

The following table details storage requirements for specific directories. These values are based on expected use case scenarios and can vary according to individual environments.

The runtime size was measured with Red Hat Enterprise Linux 5, 6, and 7 repositories synchronized.

Table 1.1. Storage Requirements for a Disconnected Satellite Server Installation

DirectoryInstallation SizeRuntime Size

/var/cache/pulp/

1 MB

30 GB

/var/lib/pulp/

1 MB

500 GB

/var/lib/mongodb/

3.5 GB

50 GB

/var/lib/qpidd/

25 MB

Not Applicable

/var/log/

10 MB

10 GB

/var/lib/pgsql/

100 MB

10 GB

/var/spool/squid/

0 MB

10 GB

/usr

3 GB

Not Applicable

/opt

3 GB

Not Applicable

/opt/puppetlabs

500 MB

Not Applicable

1.2.2. Storage Guidelines

Consider the following guidelines when installing Satellite Server to increase efficiency.

  • Because most Satellite and Capsule Server data is stored within the /var directory, mounting /var on LVM storage can help the system to scale.
  • Using the same volume for the /var/cache/pulp/ and /var/lib/pulp/ directories can decrease the time required to move content from /var/cache/pulp/ to /var/lib/pulp/ after synchronizing.
  • Use high-bandwidth, low-latency storage for the /var/lib/pulp/ and /var/lib/mongodb/ directories. As Red Hat Satellite has many operations that are I/O intensive, using high latency, low-bandwidth storage causes performance degradation. Ensure your installation has a speed in the range 60 - 80 Megabytes per second. You can use the fio tool to get this data. See the Red Hat Knowledgebase solution Impact of Disk Speed on Satellite 6 Operations for more information on using the fio tool.
  • For improved performance, use solid state drives (SSD) rather than hard disk drives (HDD).
  • The /var/lib/qpidd/ directory uses slightly more than 2 MB per Content Host managed by the goferd service. For example, 10 000 Content Hosts require 20 GB of disk space in /var/lib/qpidd/.

File System Guidelines

  • Use the XFS file system for Red Hat Satellite 6 because it does not have the inode limitations that ext4 does. Because Satellite uses a lot of symbolic links it is likely that your system might run out of inodes if using ext4 and the default number of inodes.
  • Do not use NFS with MongoDB because MongoDB does not use conventional I/O to access data files and performance problems occur when both the data files and the journal files are hosted on NFS. If required to use NFS, mount the volume with the following options in the /etc/fstab file: bg, nolock, and noatime.
  • Do not use the GFS2 file system as the input-output latency is too high.

Log File Storage

Log files are written to /var/log/messages/, /var/log/httpd/, and /var/lib/foreman-proxy/openscap/content/. You can manage the size of these files using logrotate. For more information, see Log Rotation in the System Administrator’s Guide.

The exact amount of storage you require for log messages depends on your installation and setup.

SELinux Considerations for NFS Mount

When /var/lib/pulp directory is mounted using an NFS share, SELinux blocks the synchronization process. To avoid this, specify the SELinux context of the /var/lib/pulp directory in the file system table by adding the following lines to /etc/fstab:

nfs.example.com:/nfsshare  /var/lib/pulp/content  nfs  context="system_u:object_r:httpd_sys_rw_content_t:s0"  1 2

If NFS share is already mounted, remount it using the above configuration and enter the following command:

# chcon -R system_u:object_r:httpd_sys_rw_content_t:s0 /var/lib/pulp

Duplicated Packages

Packages that are duplicated in different repositories are only stored once on the disk. Additional repositories containing duplicate packages require less additional storage. The bulk of storage resides in the /var/lib/mongodb/ and /var/lib/pulp/ directories. These end points are not manually configurable. Ensure that storage is available on the /var file system to prevent storage problems.

Temporary Storage

The /var/cache/pulp/ directory is used to temporarily store content while it is being synchronized. For content in RPM format, a maximum of 5 RPM files are stored in this directory at any time. After each file is synchronized, it is moved to the /var/lib/pulp/ directory. Up to 8 RPM content synchronization tasks can run simultaneously by default, with each using up to 1 GB of metadata.

ISO Images

For content in ISO format, all ISO files per synchronization task are stored in /var/cache/pulp/ until the task is complete, after which they are moved to the /var/lib/pulp/ directory.

If you plan to use ISO images for installing or updating, you must provide external storage or allow space in /var/tmp for temporarily storing ISO files.

For example, if you are synchronizing four ISO files, each 4 GB in size, this requires a total of 16 GB in the /var/cache/pulp/ directory. Consider the number of ISO files you intend synchronizing because the temporary disk space required for them typically exceeds that of RPM content.

Software Collections

Software collections are installed in the /opt/rh/ and /opt/theforeman/ directories.

Write and execute permissions by the root user are required for installation to the /opt directory.

Symbolic links

You cannot use symbolic links for /var/lib/pulp/ and /var/lib/mongodb/,

1.3. Supported Operating Systems

You can install the operating system from disc, local ISO image, kickstart, or any other method that Red Hat supports. Red Hat Satellite Server is supported only on the latest versions of Red Hat Enterprise Linux 7 Server that is available at the time when Satellite Server 6.6 is installed. Previous versions of Red Hat Enterprise Linux including EUS or z-stream are not supported.

Red Hat Satellite Server requires a Red Hat Enterprise Linux installation with the @Base package group with no other package-set modifications, and without third-party configurations or software not directly necessary for the direct operation of the server. This restriction includes hardening and other non-Red Hat security software. If you require such software in your infrastructure, install and verify a complete working Satellite Server first, then create a backup of the system before adding any non-Red Hat software.

Install Satellite Server on a freshly provisioned system. Red Hat does not support using the system for anything other than running Satellite Server.

1.4. Supported Browsers

The following web browsers are fully supported:

  • Firefox versions 39 and later
  • Chrome versions 28 and later

The following web browsers are partially supported. The Satellite web UI interface functions correctly but certain design elements may not align as expected:

  • Firefox version 38
  • Chrome version 27
  • Internet Explorer versions 10 and 11
Note

The web UI and command-line interface for Satellite Server supports English, Portuguese, Simplified Chinese, Traditional Chinese, Korean, Japanese, Italian, Spanish, Russian, French, and German.

1.5. Ports and Firewalls Requirements

For the components of Satellite architecture to communicate, ensure that the required network ports are open and free on the base operating system. You must also ensure that the required network ports are open on any network-based firewalls.

Use this information to configure any network-based firewalls. Note that some cloud solutions must be specifically configured to allow communications between machines because they isolate machines similarly to network-based firewalls. If you use an application-based firewall, ensure that the application-based firewall permits all applications that are listed in the tables and known to your firewall. If possible, disable the application checking and allow open port communication based on the protocol.

Integrated Capsule

Satellite Server has an integrated Capsule and any host that is directly connected to Satellite Server is a Client of Satellite in the context of this section. This includes the base system on which Capsule Server is running.

Clients of Capsule

Hosts which are clients of Capsules, other than Satellite’s integrated Capsule, do not need access to Satellite Server. For more information on Satellite Topology, see Capsule Networking in Planning for Red Hat Satellite 6.

Required ports can change based on your configuration.

A matrix table of ports is available in the Red Hat Knowledgebase solution Red Hat Satellite 6.6 List of Network Ports.

The following tables indicate the destination port and the direction of network traffic:

Table 1.2. Ports for Browser-based User Interface Access to Satellite

PortProtocolServiceRequired For

443

TCP

HTTPS

Browser-based UI access to Satellite

80

TCP

HTTP

Redirection to HTTPS for web UI access to Satellite (Optional)

Table 1.3. Ports for Client to Satellite Communication

PortProtocolServiceRequired For

80

TCP

HTTP

Anaconda, yum, for obtaining Katello certificates, templates, and for downloading iPXE firmware

443

TCP

HTTPS

Subscription Management Services, yum, Telemetry Services, and for connection to the Katello Agent

5647

TCP

amqp

Katello Agent to communicate with Satellite’s Qpid dispatch router

8000

TCP

HTTP

Anaconda to download kickstart templates to hosts, and for downloading iPXE firmware

8140

TCP

HTTPS

Puppet agent to Puppet master connections

9090

TCP

HTTPS

Sending SCAP reports to the Smart Proxy in the integrated Capsule, for the discovery image during provisioning, and for communicating with Satellite Server to copy the SSH keys for Remote Execution (Rex) configuration

53

TCP and UDP

DNS

Client DNS queries to a Satellite’s integrated Capsule DNS service (Optional)

67

UDP

DHCP

Client to Satellite’s integrated Capsule broadcasts, DHCP broadcasts for Client provisioning from a Satellite’s integrated Capsule (Optional)

69

UDP

TFTP

Clients downloading PXE boot image files from a Satellites' integrated Capsule for provisioning (Optional)

5000

TCP

HTTPS

Connection to Katello for the Docker registry (Optional)

Any managed host that is directly connected to Satellite Server is a client in this context because it is a client of the integrated Capsule. This includes the base system on which a Capsule Server is running.

Table 1.4. Ports for Satellite to Capsule Communication

PortProtocolServiceRequired for

443

TCP

HTTPS

Connections to the Pulp server in the Capsule

9090

TCP

HTTPS

Connections to the proxy in the Capsule

80

TCP

HTTP

Downloading a bootdisk (Optional)

Table 1.5. Optional Network Ports

PortProtocolServiceRequired For

22

TCP

SSH

Satellite and Capsule originated communications, for Remote Execution (Rex) and Ansible.

443

TCP

HTTPS

Satellite originated communications, for vCenter compute resource.

5000

TCP

HTTP

Satellite originated communications, for compute resources in OpenStack or for running containers.

22, 16514

TCP

SSH, SSL/TLS

Satellite originated communications, for compute resources in libvirt.

389, 636

TCP

LDAP, LDAPS

Satellite originated communications, for LDAP and secured LDAP authentication sources.

5900 to 5930

TCP

SSL/TLS

Satellite originated communications, for NoVNC console in web UI to hypervisors.

1.6. Enabling Connections from a Client to Satellite Server

Capsules and Content Hosts that are clients of a Satellite Server’s internal Capsule require access through Satellite’s host-based firewall and any network-based firewalls.

Use this section to configure the host-based firewall on the Red Hat Enterprise Linux 7 system that Satellite is installed on, to enable incoming connections from Clients, and to make the configuration persistent across system reboots. For more information on the ports used, see Section 1.5, “Ports and Firewalls Requirements”.

Configuring the Firewall

  1. To open the ports for client to Satellite communication, enter the following command on the base system that you want to install Satellite on:

    # firewall-cmd \
    --add-port="80/tcp" --add-port="443/tcp" \
    --add-port="5647/tcp" --add-port="8000/tcp" \
    --add-port="8140/tcp" --add-port="9090/tcp" \
    --add-port="53/udp" --add-port="53/tcp" \
    --add-port="67/udp" --add-port="69/udp" \
    --add-port="5000/tcp"
  2. Make the changes persistent:

    # firewall-cmd --runtime-to-permanent

1.7. Verifying Firewall Settings

Use this procedure to verify your changes to the firewall settings.

Procedure

To verify the firewall settings, complete the following step:

  1. Enter the following command:

    # firewall-cmd --list-all

For more information, see Getting Started with firewalld in the Red Hat Enterprise Linux 7 Security Guide.

1.8. Verifying DNS resolution

Verify the full forward and reverse DNS resolution using a fully-qualified domain name to prevent issues while installing Satellite.

Ensure that the host name and local host resolve correctly.

# ping -c1 localhost
# ping -c1 `hostname -f` # my_system.domain.com

Successful name resolution results in output similar to the following:

# ping -c1 localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.043 ms

--- localhost ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.043/0.043/0.043/0.000 ms

# ping -c1 `hostname -f`
PING hostname.gateway (XX.XX.XX.XX) 56(84) bytes of data.
64 bytes from hostname.gateway (XX.XX.XX.XX): icmp_seq=1 ttl=64 time=0.019 ms

--- localhost.gateway ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.019/0.019/0.019/0.000 ms

To avoid discrepancies with static and transient host names, set all the host names on the system by entering the following command:

# hostnamectl set-hostname name

For more information, see the Configuring Host Names Using hostnamectl in the Red Hat Enterprise Linux 7 Networking Guide.

Warning

Name resolution is critical to the operation of Satellite 6. If Satellite cannot properly resolve its fully qualified domain name, many options fail. Among these options are content management, subscription management, and provisioning.

Chapter 2. Installing Satellite Server

You can use this chapter to find information about installing Red Hat Satellite Server, performing the initial configuration, creating and installing manifests, and performing additional configuration.

There are two methods of installing Satellite Server:

Connected:

You can obtain the packages required to install Satellite Server directly from the Red Hat Content Delivery Network (CDN). Using the CDN ensures that your system always receives the latest updates.

Disconnected:

You must use an external computer to download an ISO image of the packages and copy the packages to the system you want to install Satellite Server on. Use an ISO image only if you require a disconnected environment. The ISO image might not contain the latest updates.

Note

You cannot register Satellite Server to itself.

2.1. Downloading and Installing from a Disconnected Network

When the intended host for the Red Hat Satellite Server is in a disconnected environment, it is possible to install the Satellite Server by using an ISO image. This method is not recommended for any other situation as ISO images might not contain the latest updates, bug fixes, and functionality.

Note

If the base system has not been updated from the Red Hat CDN, package dependency errors are possible. You must manually download and install the latest version of the required packages. For more information, see Section 2.1.4, “Downloading and Installing Packages Manually”.

Before You Begin

  • A copy of the repositories used in the installation are stored in the /opt/ directory. Ensure you have a minimum of 3 GB of space for this file system and directory.

2.1.1. Downloading the Binary DVD Images

  1. Go to Red Hat Customer Portal and log in.
  2. Click DOWNLOADS.
  3. Select Red Hat Enterprise Linux.
  4. Ensure that you have the correct product and version for your environment.

    • Product Variant is set to Red Hat Enterprise Linux Server.
    • Version is set to the latest minor version of the product you plan to use as the base system.
    • Architecture is set to the 64 bit version.
  5. On the Product Software tab, download the Binary DVD image for the latest Red Hat Enterprise Linux Server version.
  6. Click DOWNLOADS and select Red Hat Satellite.
  7. Ensure that you have the correct product and version for your environment.

    • Product Variant is set to Red Hat Satellite.
    • Version is set to the latest minor version of the product you plan to use as the base system.
    • Architecture is set to the 64 bit version.
  8. On the Product Software tab, download the Binary DVD image for the latest Red Hat Satellite version.
  9. Copy the ISO files to /var/tmp on the Satellite base system or other accessible storage device.

    # scp localfile username@hostname:remotefile

2.1.2. Configuring the Base System with Offline Repositories

  1. Create a directory to serve as the mount point for the ISO file corresponding to the base system’s version.

    # mkdir /media/rhel7-server
  2. Mount the ISO image for Red Hat Enterprise Linux to the mount point.

    # mount -o loop rhel7-Server-DVD.iso /media/rhel7-server
  3. Copy the ISO file’s repository data file.

    # cp /media/rhel7-server/media.repo /etc/yum.repos.d/rhel7-server.repo
  4. Edit the repository data file and add the baseurl directive.

    baseurl=file:///media/rhel7-server/
  5. Verify that the repository has been configured.

    # yum repolist
  6. Create a directory to serve as the mount point for the ISO file of the Satellite Server.

    # mkdir /media/sat6
  7. Mount the ISO image for Red Hat Satellite Server to the mount point.

    # mount -o loop sat6-DVD.iso /media/sat6

2.1.3. Installing from the Offline Repositories

  1. Ensure the ISO images for Red Hat Enterprise Linux Server and Red Hat Satellite are mounted:

    # findmnt -t iso9660
  2. Import the Red Hat GPG keys.

    # rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
  3. Ensure the base system is up to date with the Binary DVD image.

    # yum update
  4. Change to the directory where the Satellite ISO is mounted.

    # cd /media/sat6/
  5. Run the installation script in the mounted directory.

    # ./install_packages
    	This script will install the foreman packages on the current machine.
       - Ensuring we are in an expected directory.
       - Copying installation files.
       - Creating a Repository File
       - Creating RHSCL Repository File
       - Checking to see if Foreman is already installed.
       - Importing the gpg key.
       - Foreman is not yet installed, installing it.
       - Installation repository will remain configured for future package installs.
       - Installation media can now be safely unmounted.
    
    Install is complete. Please run satellite-installer --scenario satellite.

    If the script fails due to missing or outdated packages, you must download and install these separately. See Section 2.1.4, “Downloading and Installing Packages Manually” for instructions.

    If the script fails due to installed packages being newer than those required, enter yum distribution-synchronization to downgrade the installed packages to the versions that came from the Red Hat Enterprise Linux ISO, then run the installation script again. This should only occur if you have repositories configured whose source is not the Red Hat Enterprise Linux ISO. Use of such repositories is an unsupported configuration.

  6. After installing the packages, proceed to Section 2.2, “Performing the Initial Configuration”.

2.1.4. Downloading and Installing Packages Manually

If required to download a package manually, proceed as follows:

  1. Go to Red Hat Customer Portal and log in.
  2. Click DOWNLOADS.
  3. Click the Product that contains the package that you want to download.
  4. Ensure that you have the correct Product Variant, Version, and Architecture for your environment.
  5. Click the Packages tab.
  6. In the Search field, enter the name of the package.
  7. Click the package.
  8. From the Version list, select the version of the package.
  9. At the bottom of the page, click Download Now.
  10. Copy the package to the Satellite base system or another accessible storage device:

    # scp localfile username@hostname:remotefile
  11. On Satellite Server, change to the directory where the package is located:

    # cd /path-to-package/
  12. Install the package locally:

    # yum localinstall package_name
  13. Return to step 4 in Section 2.1.3, “Installing from the Offline Repositories”.

2.2. Performing the Initial Configuration

This section details how to perform the initial configuration of the host operating system when installing Red Hat Satellite Server. This includes synchronizing the time, installing the sos package, and specifying an installation option.

Before you continue, consider which manifests or packages are relevant for your environment. For more information on manifests, see Managing Subscriptions in the Red Hat Satellite Content Management Guide.

2.2.1. Synchronizing the System Clock With chronyd

To minimize the effects of time drift, you must synchronize the system clock on the base system on which you want to install Satellite Server with Network Time Protocol (NTP) servers. If the base system clock is configured incorrectly, certificate verification might fail.

For more information about the chrony suite, see Configuring NTP Using the chrony Suite in the Red Hat Enterprise Linux 7 System Administrator’s Guide.

Procedure

To synchronize the system clock, complete the following steps:

  1. Install the chrony package:

    # yum install chrony
  2. Start and enable the chronyd service:

    # systemctl start chronyd
    # systemctl enable chronyd

2.2.2. Installing the SOS Package on the Host Operating System

You should install the sos package on the host operating system. The sos package enables you to collect configuration and diagnostic information from a Red Hat Enterprise Linux system. You can also use it to provide the initial system analysis, which is required when opening a service request with Red Hat Technical Support. For more information on using sos, see the Knowledgebase solution What is a sosreport and how to create one in Red Hat Enterprise Linux 4.6 and later? on the Red Hat Customer Portal.

Install the sos package.

# yum install sos

2.2.3. Specifying Installation Options

Satellite Server is installed using the satellite-installer installation script and as part of the initial configuration, you either automatically or manually configure Satellite.

Choose from one of these two methods:

  • Automatic Configuration - This method is performed by using an answer file to automate the configuration process when running the installation script. An answer file is a file containing a list of parameters that are read by a command or script. The default Satellite answer file is /etc/foreman-installer/scenarios.d/satellite-answers.yaml. The answer file in use is set by the answer_file directive in the /etc/foreman-installer/scenarios.d/satellite.yaml configuration file.

    To perform the initial configuration using the installation script with an answer file, see Section 2.2.3.2, “Performing the Initial Configuration Automatically using an Answer File”.

  • Manual Configuration - This method is performed by running the installation script with one or more command options. The command options override the corresponding default initial configuration options and are recorded in the Satellite answer file. You can run the script as often as needed to configure any necessary options.

    To perform the initial configuration using the installation script with command-line options, see Section 2.2.3.1, “Performing the Initial Configuration Manually”.

Note

Depending on the options that you use when running the Satellite installer, the configuration can take several minutes to complete. An administrator is able to view the answer file to see previously used options for both methods.

2.2.3.1. Performing the Initial Configuration Manually

This initial configuration procedure creates an organization, location, user name, and password. After the initial configuration, you can create additional organizations and locations if required. The initial configuration also installs MongoDB and PostgreSQL databases on the same server. Depending on your deployment, using external databases can benefit performance.

The installation process can take tens of minutes to complete. If you are connecting remotely to the system, consider using a utility such as screen that allows suspending and reattaching a communication session so that you can check the installation progress in case you become disconnected from the remote system. The Red Hat Knowledgebase article How to use the screen command describes installing screen; alternately see the screen manual page for more information. If you lose connection to the shell where the installation command is running, see the log at /var/log/foreman-installer/satellite.log to determine if the process completed successfully.

Manually configuring Satellite Server

Use the satellite-installer --scenario satellite --help command to display the available options and any default values. If you do not specify any values, the default values are used.

It is recommended to specify a meaningful value for the option: --foreman-initial-organization. This can be your company name. An internal label that matches the value is also created and cannot be changed afterwards. If you do not specify a value, an organization called Default Organization with the label Default_Organization is created. You can rename the organization name but not the label.

By default, all configuration files configured by the installer are managed by Puppet. When satellite-installer runs, it overwrites any manual changes to the Puppet managed files with the initial values. By default, Satellite Server is installed with the Puppet agent running as a service. If required, you can disable Puppet agent on Satellite Server using the --puppet-runmode=none option.

If you want to manage DNS files and DHCP files manually, use the --foreman-proxy-dns-managed=false and --foreman-proxy-dhcp-managed=false options so that Puppet does not manage the files related to the respective services. For more information on how to apply custom configuration on other services, see Appendix B, Applying Custom Configuration to Red Hat Satellite.

If you want to use external databases with Satellite, before you run the satellite installer tool, you must set up and point to external databases. For more information, see Using External Databases with Satellite in Installing Satellite Server from a Connected Network.

# satellite-installer --scenario satellite \
--foreman-initial-organization "initial_organization_name" \
--foreman-initial-location "initial_location_name" \
--foreman-initial-admin-username admin_user_name \
--foreman-initial-admin-password admin_password

The script displays its progress and writes logs to /var/log/foreman-installer/satellite.log.

Unmount the ISO images:

# umount /media/sat6
# umount /media/rhel7-server

2.2.3.2. Performing the Initial Configuration Automatically using an Answer File

You can use answer files to automate installations with customized options. The initial answer file is sparsely populated and after you run the satellite-installer script the first time, the answer file is populated with the standard parameter values for installation. You can change the configuration of Satellite Server at any time.

You should use the FQDN instead of the IP address where possible in case of network changes.

Automatically configuring Satellite Server using an Answer File

  1. Copy the default answer file /etc/foreman-installer/scenarios.d/satellite-answers.yaml to a location on your local file system.

    # cp /etc/foreman-installer/scenarios.d/satellite-answers.yaml \
    /etc/foreman-installer/scenarios.d/my-answer-file.yaml
  2. To view all of the configurable options, enter the satellite-installer --scenario satellite --help command.
  3. Open your copy of the answer file, edit the values to suit your environment, and save the file.
  4. Open the /etc/foreman-installer/scenarios.d/satellite.yaml file and edit the answer file entry to point to your custom answer file.

    :answer_file: /etc/foreman-installer/scenarios.d/my-answer-file.yaml
  5. Run the satellite-installer script.

    # satellite-installer --scenario satellite
  6. If you have been installing in a disconnected environment, unmount the ISO images.

    # umount /media/sat6
    # umount /media/rhel7-server

2.2.4. Creating a Subscription Allocation in Customer Portal

You can access your subscription information on the Red Hat Customer Portal. You can also assign subscriptions for use in on-premise management applications, such as Red Hat Satellite, using subscription allocations.

  1. Open https://access.redhat.com/ in your browser and log in to the Red Hat account that you used to register the system to Red Hat Subscription Management.
  2. Navigate to Subscriptions in the upper-left corner of the Customer Portal.
  3. Navigate to Subscription Allocations.
  4. Click Create New subscription allocation.
  5. In the Name field, enter a name.
  6. From the Type list, select the type and version that corresponds to your Satellite Server.
  7. Click Create.

2.2.5. Adding Subscriptions to an Allocation

The following procedure explains how to add subscriptions to an allocation.

  1. Open https://access.redhat.com/ in your browser and log in to the Red Hat account that you used to register the system to Red Hat Subscription Management.
  2. Navigate to Subscriptions in the upper-left corner of the Customer Portal.
  3. Navigate to Subscription Allocations.
  4. Click the allocation that you want to update.
  5. Click the Subscriptions tab.
  6. Click Add Subscriptions.
  7. A list of your Red Hat product subscriptions appears. Enter the Entitlement Quantity for each product.
  8. Click Submit to complete the assignment.

When you have added subscriptions to the allocation, export the manifest file.

2.2.6. Exporting a Subscription Manifest from the Customer Portal

While viewing a subscription allocation that has at least one subscription, you can export a manifest in either of two places:

  • From the Details tab, under the Subscription section, by clicking the Export Manifest button.
  • From the Subscriptions tab, by clicking the Export Manifest button.

When the manifest is exported, the Customer Portal encodes the selected subscriptions certificates and creates a .zip archive. This is the Subscription Manifest, which can be uploaded into the Satellite Server.

2.2.7. Importing a Subscription Manifest into the Satellite Server

Both the Red Hat Satellite 6 web UI and CLI provide methods for importing the manifest.

Prerequisites

Ensure that you enable the disconnected mode on your Satellite Server. For more information, see Section 2.2.8, “Enabling the Disconnected Mode”.

For Web UI Users

  1. Ensure the context is set to the organization you want to use.
  2. Navigate to Content > Subscriptions.
  3. Click Manage Manifest to display the manifest page for the organization.
  4. Click Choose file, select the Subscription Manifest, then click Upload.
  5. Click Choose file and select the manifest archive in a .zip format that you have exported from the Customer Portal.

For CLI Users

The Red Hat Satellite 6 CLI requires the manifest to be on the Satellite Server. On your local client system, copy the manifest to the Satellite Server:

[user@client ~]$ scp ~/manifest_file.zip root@satellite.example.com:~/.

Then import it using the following command:

[root@satellite ~]# hammer subscription upload \
--file ~/manifest_file.zip \
--organization "organization_name"

After a few minutes, the CLI reports a successful manifest import.

When you complete this section, you can enable repositories and import Red Hat content. This is a prerequisite for some of the following procedures. For more information, see Importing Red Hat Content in the Red Hat Satellite Content Management Guide.

2.2.8. Enabling the Disconnected Mode

Enable the disconnected mode on Satellite Server. When the disconnected mode is enabled, Satellite Server does not access the Red Hat Content Delivery Network (CDN).

Procedure

To enable the disconnected mode on Satellite Server, complete the following steps:

  1. In the Satellite web UI, navigate to Administer > Settings.
  2. Click the Content tab.
  3. Set the Disconnected mode value to Yes.

For the CLI Users

Enter the following command on Satellite Server:

# hammer settings set --name content_disconnected --value true

Chapter 3. Performing Additional Configuration on Satellite Server

3.1. Installing the Satellite Tools Repository

The Satellite Tools repository provides the katello-agent and puppet packages for clients registered to Satellite Server. Installing the Katello agent is recommended to allow remote updates of clients. The base system of a Capsule Server is a client of Satellite Server and therefore must also have the Katello agent installed.

Procedure

To install the Satellite Tools repository, complete the following steps:

  1. In the Satellite web UI, navigate to Content > Red Hat Repositories.
  2. Use the Search field to enter the following repository name: Red Hat Satellite Tools 6.6 (for RHEL 7 Server) (RPMs).
  3. In the Available Repositories pane, click on Red Hat Satellite Tools 6.6 (for RHEL 7 Server) (RPMs) to expand the repository set.

    If the Red Hat Satellite Tools 6.6 items are not visible, it may be because they are not included in the Subscription Manifest obtained from the Customer Portal. To correct that, log in to the Customer Portal, add these repositories, download the Subscription Manifest and import it into Satellite.

  4. For the x86_64 entry, click the Enable icon to enable the repository.

Enable the Satellite Tools repository for every supported major version of Red Hat Enterprise Linux running on your hosts. After enabling a Red Hat repository, a Product for this repository is automatically created.

For CLI Users

Install the Satellite Tools repository using the hammer repository-set enable command:

# hammer repository-set enable --organization "initial_organization_name" \
--product 'Red Hat Enterprise Linux Server' \
--basearch='x86_64' \
--name 'Red Hat Satellite Tools 6.6 (for RHEL 7 Server) (RPMs)'

3.2. Synchronizing the Satellite Tools Repository

Use this section to synchronize the Satellite Tools repository from the Red Hat Content Delivery Network (CDN) to your Satellite. This repository repository provides the katello-agent and puppet packages for clients registered to Satellite Server.

Procedure

To synchronize the Satellite Tools repository, complete the following steps:

  1. In the Satellite web UI, navigate to Content > Sync Status.

    A list of product repositories available for synchronization is displayed.

  2. Click the arrow next to the Red Hat Enterprise Linux Server product to view available content.
  3. Select Red Hat Satellite Tools 6.6 (for RHEL 7 Server) RPMs x86_64.
  4. Click Synchronize Now.

For CLI Users

Synchronize your Satellite Tools repository using the hammer repository synchronize command:

# hammer repository synchronize --organization "initial_organization_name" \
--product 'Red Hat Enterprise Linux Server' \
--name 'Red Hat Satellite Tools 6.6 for RHEL 7 Server RPMs x86_64' \
--async

3.3. Enabling Power Management on Managed Hosts

When you enable the baseboard management controller (BMC) module on Satellite Server, you can use power management commands on managed hosts using the intelligent platform management interface (IPMI) or a similar protocol.

The BMC service enables you to perform a range of power management tasks. The underlying protocol for this feature is IPMI; also referred to as the BMC function. IPMI uses a special network interface on the managed hardware that is connected to a dedicated processor that runs independently of the host’s CPUs. In many instances the BMC functionality is built into chassis-based systems as part of chassis management (a dedicated module in the chassis).

For more information on the BMC service, see Adding a Baseboard Management Controller (BMC) Interface in the Managing Hosts guide.

Before You Begin

  • All managed hosts must have a network interface, with type BMC. Satellite uses this NIC to pass the appropriate credentials to the host.

Enable Power Management on Managed Hosts

  1. Run the installer with the options to enable BMC.

    # satellite-installer --foreman-proxy-bmc "true" \
    --foreman-proxy-bmc-default-provider "freeipmi"

3.4. Configuring DNS, DHCP, and TFTP on Satellite Server

You can configure DNS, DHCP, and TFTP on Satellite Server.

If you want to configure external services, see Chapter 4, Configuring External Services.

If you want to disable these services in Satellite in order to manage them manually, see Section 3.5, “Disabling DNS, DHCP, and TFTP for Unmanaged Networks”.

To view a complete list of configurable options, enter the satellite-installer --scenario satellite --help command.

Before You Begin

  • Contact your network administrator to ensure that you have the correct settings.
  • You should have the following information available:

    • DHCP IP address ranges
    • DHCP gateway IP address
    • DHCP nameserver IP address
    • DNS information
    • TFTP server name
  • Use the FQDN instead of the IP address where possible in case of network changes.

Configure DNS, DHCP, and TFTP on Satellite Server

  1. Run satellite-installer with the options appropriate for your environment.

    # satellite-installer --scenario satellite \
    --foreman-proxy-dns true \
    --foreman-proxy-dns-managed true \
    --foreman-proxy-dns-interface eth0 \
    --foreman-proxy-dns-zone example.com \
    --foreman-proxy-dns-forwarders 172.17.13.1 \
    --foreman-proxy-dns-reverse 13.17.172.in-addr.arpa \
    --foreman-proxy-dhcp true \
    --foreman-proxy-dhcp-managed true \
    --foreman-proxy-dhcp-interface eth0 \
    --foreman-proxy-dhcp-range "172.17.13.100 172.17.13.150" \
    --foreman-proxy-dhcp-gateway 172.17.13.1 \
    --foreman-proxy-dhcp-nameservers 172.17.13.2 \
    --foreman-proxy-tftp true \
    --foreman-proxy-tftp-managed true \
    --foreman-proxy-tftp-servername $(hostname)

    For more information about configuring DHCP, DNS, and TFTP services, see the Configuring Network Services section in the Provisioning Guide.

    The script displays its progress and writes logs to /var/log/foreman-installer/satellite.log. You can view the settings used, including the admin_password parameter, in the /etc/foreman-installer/scenarios.d/satellite-answers.yaml file.

Note

Any changes to the settings require running satellite-installer again. You can run the script multiple times and it updates all configuration files with the changed values.

3.5. Disabling DNS, DHCP, and TFTP for Unmanaged Networks

If you want to manage TFTP, DHCP, and DNS services manually, you must prevent Satellite from maintaining these services on the operating system and disable orchestration to avoid DHCP and DNS validation errors. However, Satellite does not remove the back-end services on the operating system.

Procedure

To prevent Satellite from maintaining DHCP, DNS, and TFTP services on the operating system, and disable orchestration, complete the following steps:

  1. On Satellite Server, enter the following command:

    # satellite-installer --foreman-proxy-dhcp false \
    --foreman-proxy-dns false \
    --foreman-proxy-tftp false
  2. In the Satellite web UI, navigate to Infrastructure > Subnets and select a subnet.
  3. Click the Capsules tab and clear the DHCP Capsule, TFTP Capsule, and Reverse DNS Capsule fields.
  4. Navigate to Infrastructure > Domains and select a domain.
  5. Clear the DNS Capsule field.
  6. Optional: If you use a DHCP service supplied by a third party, configure your DHCP server to pass the following options:

    Option 66: IP_address_of_Satellite_or_Capsule
    Option 67: /pxelinux.0

    For more information about DHCP options, see RFC 2132.

Note

Satellite 6 does not perform orchestration when a Capsule is not set for a given subnet and domain. When enabling or disabling Capsule associations, orchestration commands for existing hosts can fail if the expected records and configuration files are not present. When associating a Capsule to turn orchestration on, make sure the required DHCP and DNS records as well as the TFTP files are in place for the existing Satellite hosts in order to prevent host deletion failures in the future.

3.6. Configuring Satellite Server for Outgoing Emails

To send email messages from Satellite Server, you can use either an SMTP server, or the sendmail command.

Prerequisites

If you have upgraded from a previous release, rename or remove the configuration file /usr/share/foreman/config/email.yaml and restart the httpd service. For example:

# mv /usr/share/foreman/config/email.yaml \
/usr/share/foreman/config/email.yaml-backup
# systemctl restart httpd

To Configure Satellite Server for Outgoing Emails:

  1. In the Satellite web UI, navigate to AdministerSettings.
  2. Click the Email tab and set the configuration options to match your preferred delivery method. The changes have an immediate effect.

    1. The following example shows the configuration options for using an SMTP server:

      Table 3.1. Using an SMTP server as a delivery method

      NameExample value

      Delivery method

      SMTP

      SMTP address

      smtp.example.com

      SMTP authentication

      login

      SMTP HELO/EHLO domain

      example.com

      SMTP password

      password

      SMTP port

      25

      SMTP username

      satellite@example.com

      The SMTP username and SMTP password specify the login credentials for the SMTP server.

    2. The following example uses gmail.com as an SMTP server:

      Table 3.2. Using gmail.com as an SMTP server

      NameExample value

      Delivery method

      SMTP

      SMTP address

      smtp.gmail.com

      SMTP authentication

      plain

      SMTP HELO/EHLO domain

      smtp.gmail.com

      SMTP enable StartTLS auto

      Yes

      SMTP password

      password

      SMTP port

      587

      SMTP username

      user@gmail.com

    3. The following example uses the sendmail command as a delivery method:

      Table 3.3. Using sendmail as a delivery method

      NameExample value

      Delivery method

      Sendmail

      Sendmail arguments

      -i -t -G

      The Sendmail arguments specify the options passed to the sendmail command. The default value is -i -t. For more information see the sendmail 1 man page.

  3. If you decide to send email using an SMTP server which uses TLS authentication, also perform one of the following steps:

    • Mark the CA certificate of the SMTP server as trusted. To do so, execute the following commands on Satellite Server:

      # cp mailca.crt /etc/pki/ca-trust/source/anchors/
      # update-ca-trust enable
      # update-ca-trust

      Where mailca.crt is the CA certificate of the SMTP server.

    • Alternatively, in the web UI, set the SMTP enable StartTLS auto option to No.
  4. Click Test email to send a test message to the user’s email address to confirm the configuration is working. If a message fails to send, the web UI displays an error. See the log at /var/log/foreman/production.log for further details.
Note

For information on configuring email notifications for individual users or user groups, see Configuring Email Notifications in Administering Red Hat Satellite.

3.7. Configuring Satellite Server with a Custom SSL Certificate

By default, Red Hat Satellite 6 uses a self-signed SSL certificate to enable encrypted communications between Satellite Server, external Capsule Servers, and all hosts. If you cannot use a Satellite self-signed certificate, you can configure Satellite Server to use an SSL certificate signed by an external Certificate Authority.

To configure your Satellite Server with a custom certificate, complete the following procedures:

  1. Section 3.7.1, “Creating a Custom SSL Certificate for Satellite Server”
  2. Section 3.7.2, “Deploying a Custom SSL Certificate to Satellite Server”
  3. Section 3.7.3, “Deploying a Custom SSL Certificate to Hosts”
  4. If you have external Capsule Servers registered to Satellite Server, you must configure them with custom SSL certificates. For more information, see Configuring Capsule Server with a Custom SSL Certificate in Installing Capsule Server.

3.7.1. Creating a Custom SSL Certificate for Satellite Server

Use this procedure to create a custom SSL certificate for Satellite Server. If you already have a custom SSL certificate for Satellite Server, skip this procedure.

Important

Use the Privacy-Enhanced Mail (PEM) encoding for the SSL certificates.

Procedure

To create a custom SSL certificate, complete the following steps:

  1. To store all the source certificate files, create a directory that is accessible only to the root user.

    # mkdir /root/satellite_cert
  2. Create a private key with which to sign the Certificate Signing Request (CSR).

    Note that the private key must be unencrypted. If you use a password-protected private key, remove the private key password.

    If you already have a private key for this Satellite Server, skip this step.

    # openssl genrsa -out /root/satellite_cert/satellite_cert_key.pem 4096
  3. Create the /root/satellite_cert/openssl.cnf configuration file for the Certificate Signing Request (CSR) and include the following content:

    [ req ]
    req_extensions = v3_req
    distinguished_name = req_distinguished_name
    x509_extensions = usr_cert
    prompt = no
    
    [ req_distinguished_name ] 1
    C  = Country Name (2 letter code)
    ST = State or Province Name (full name)
    L  = Locality Name (eg, city)
    O  = Organization Name (eg, company)
    OU = The division of your organization handling the certificate
    CN = satellite.example.com 2
    
    [ v3_req ]
    basicConstraints = CA:FALSE
    keyUsage = digitalSignature, nonRepudiation, keyEncipherment, dataEncipherment
    extendedKeyUsage = serverAuth, clientAuth, codeSigning, emailProtection
    subjectAltName = @alt_names
    
    [ usr_cert ]
    basicConstraints=CA:FALSE
    nsCertType = client, server, email
    keyUsage = nonRepudiation, digitalSignature, keyEncipherment
    extendedKeyUsage = serverAuth, clientAuth, codeSigning, emailProtection
    nsComment = "OpenSSL Generated Certificate"
    subjectKeyIdentifier=hash
    authorityKeyIdentifier=keyid,issuer
    
    [ alt_names ]
    DNS.1 = satellite.example.com 3
    1
    In the [ req_distinguished_name ] section, enter information about your organization.
    2
    Set the certificate’s Common Name CN to match the fully qualified domain name (FQDN) of your Satellite Server. To confirm a FQDN, on that Satellite Server, enter the hostname -f command.
    3
    Set the Subject Alternative Name (SAN) DNS.1 to match the fully qualified domain name (FQDN) of your server.
  4. Generate the Certificate Signing Request (CSR):

    # openssl req -new \
    -key /root/satellite_cert/satellite_cert_key.pem \ 1
    -config /root/satellite_cert/openssl.cnf \ 2
    -out /root/satellite_cert/satellite_cert_csr.pem 3
    1
    Path to the private key.
    2
    Path to the configuration file.
    3
    Path to the CSR to generate.
  5. Send the certificate signing request to the Certificate Authority. The same Certificate Authority must sign certificates for Satellite Server and Capsule Server.

    When you submit the request, specify the lifespan of the certificate. The method for sending the certificate request varies, so consult the Certificate Authority for the preferred method. In response to the request, you can expect to receive a Certificate Authority bundle and a signed certificate, in separate files.

3.7.2. Deploying a Custom SSL Certificate to Satellite Server

Use this procedure to configure your Satellite Server to use a custom SSL certificate signed by a Certificate Authority. The katello-certs-check command validates the input certificate files and returns the commands necessary to deploy a custom SSL certificate to Satellite Server.

Procedure

To deploy a custom certificate on your Satellite Server, complete the following steps:

  1. Validate the custom SSL certificate input files:

    # katello-certs-check \
    -c /root/satellite_cert/satellite_cert.pem \      1
    -k /root/satellite_cert/satellite_cert_key.pem \  2
    -b /root/satellite_cert/ca_cert_bundle.pem        3
    1
    Path to the Satellite Server certificate file that is signed by a Certificate Authority.
    2
    Path to the private key that was used to sign the Capsule Server certificate.
    3
    Path to the Certificate Authority bundle.

    If the command is successful, it returns two satellite-installer commands, one of which you must use to deploy a certificate to Satellite Server.

  2. From the output of the katello-certs-check command, depending on your requirements, enter the satellite-installer command that deploys a certificate to a new Satellite or updates a certificate on a currently running Satellite.

    Important

    Do not delete the certificate archive file after you deploy the certificate. It is required, for example, when upgrading Satellite Server.

  3. On a computer with network access to Satellite Server, navigate to the following URL: https://satellite.example.com.
  4. In your browser, view the certificate details to verify the deployed certificate.

3.7.3. Deploying a Custom SSL Certificate to Hosts

After you configure Satellite Server to use a custom SSL certificate, you must also install the katello-ca-consumer package on every host that is registered to this Satellite Server.

Procedure

On each host, complete the following steps to install the katello-ca-consumer package:

  1. Delete the current katello-ca-consumer package on the host:

    # yum remove 'katello-ca-consumer*'
  2. Install the katello-ca-consumer package on the host:

    # yum localinstall \
    http://satellite.example.com/pub/katello-ca-consumer-latest.noarch.rpm

3.8. Using External Databases with Satellite

As part of the installation process for Red Hat Satellite, the satellite-installer command installs MongoDB and PostgreSQL databases on the same server as Satellite. In certain Satellite deployments, using external databases can help with the server load. However, there are many factors that can affect Satellite Server’s performance. Moving to an external database might not help your specific problem.

Depending on your requirements, you can use external databases for either MongoDB or PostgreSQL database, or both.

Red Hat does not provide support or tools for external database maintenance. This includes backups, upgrades, and database tuning. Customers using an external database require their own database administrator to support and maintain the database.

If your Satellite deployment requires external databases, use the following information to set up and point to external databases from Satellite.

FIPS-related Restrictions

Until BZ#1743706 is resolved, you cannot use an external MongoDB with Satellite in FIPS mode.

3.8.1. MongoDB as an External Database Considerations

Pulp uses the MongoDB database. If you want to use MongoDB as an external database, the following information can help you discern if this option is right for your Satellite configuration.

Advantages of External MongoDB

  • Increase in free memory and free CPU on Satellite
  • Flexibility to tune the MongoDB server’s system without adversely affecting Satellite operations

Disadvantages of External MongoDB

  • Increase in deployment complexity that can make troubleshooting more difficult
  • An external MongoDB server is an additional system to patch and maintain
  • If either the Satellite or the Mongo database server suffers a hardware or storage failure, Satellite is not operational
  • If there is latency between the Satellite and the external database server, performance can suffer

If you suspect that your Mongo database is slow, you can work with Red Hat Support to troubleshoot. You might be encountering a configuration problem or existing performance problems with Satellite 6 that moving to an external database server might not help. Red Hat Support can examine existing known issues and also work with the Satellite Engineering team to determine the root cause.

3.8.2. PostgreSQL as an External Database Considerations

Foreman, Katello, and Candlepin use the PostgreSQL database. If you want to use PostgreSQL as an external database, the following information can help you discern if this option is right for your Satellite configuration.

Advantages of External PostgreSQL:

  • Increase in free memory and free CPU on Satellite
  • Flexibility to set shared_buffers on the PostgreSQL database to a high number without the risk of interfering with other services on Satellite
  • Flexibility to tune the PostgreSQL server’s system without adversely affecting Satellite operations

Disadvantages of External PostgreSQL

  • Increase in deployment complexity that can make troubleshooting more difficult
  • The external PostgreSQL server is an additional system to patch and maintain
  • If either Satellite or the PostgreSQL database server suffers a hardware or storage failure, Satellite is not operational
  • If there is latency between the Satellite server and database server, performance can suffer

If you suspect that the PostgreSQL database on your Satellite is causing performance problems, use the information in Satellite 6: How to enable postgres query logging to detect slow running queries to determine if you have slow queries. Queries that take longer than one second are typically caused by performance issues with large installations, and moving to an external database might not help. If you have slow queries, contact Red Hat Support.

3.8.3. Overview

To create and use a remote database for Satellite, you must complete the following procedures:

  1. Use Section 1.2, “Storage Requirements and Guidelines” to plan the storage requirements for your external databases
  2. Prepare PostgreSQL with databases for Foreman and Candlepin and dedicated users owning them
  3. Prepare MongoDB with user pulp owning the pulp_database
  4. Follow the initial steps to install Satellite and ensure that the databases are accessible from Satellite
  5. Edit the parameters of satellite-installer to point to the new databases, and run satellite-installer

Preparing Red Hat Enterprise Linux Server 7 for Database Installation

You require a freshly provisioned system with the latest Red Hat Enterprise Linux Server 7 that meets the storage requirements from Section 1.2, “Storage Requirements and Guidelines”.

Subscriptions for Red Hat Software Collections and Red Hat Enterprise Linux do not provide the correct service level agreement for using Satellite with external databases. You must also attach a Satellite subscription to the base system that you want to use for the external database.

  1. Use the instructions in Attaching the Satellite Infrastructure Subscription to attach a Satellite subscription to your server.
  2. To install MongoDB and PostgreSQL servers on Red Hat Enterprise Linux Server 7, you must disable all repositories and enable only the following repositories:

    # subscription-manager repos --disable '*'
    # subscription-manager repos --enable=rhel-server-rhscl-7-rpms \
    --enable=rhel-7-server-rpms

3.8.4. Installing MongoDB

You can install only the same version of MongoDB that is installed with the satellite-installer tool during an internal database installation. You can install MongoDB using Red Hat Software Collections (RHSCL) repositories or from an external source, as long as the version is supported. Satellite supports MongoDB version 3.4.

  1. To install MongoDB, enter the following command:

    # yum install rh-mongodb34 rh-mongodb34-syspaths
  2. Start and enable the rh-mongodb34 service:

    # systemctl start rh-mongodb34-mongod
    # systemctl enable rh-mongodb34-mongod
  3. Create a Pulp user on MongoDB for database pulp_database:

    # mongo pulp_database \
    --eval "db.createUser({user:'pulp',pwd:'pulp_password',roles:[{role:'dbOwner', db:'pulp_database'},{ role: 'readWrite', db: 'pulp_database'}]})"
  4. In the /etc/opt/rh/rh-mongodb34/mongod.conf file, specify the bind IP:

    bindIp: your_mongodb_server_bind_IP,::1
  5. Edit the /etc/opt/rh/rh-mongodb34/mongod.conf file to enable authentication in the security section:

    security:
      authorization: enabled
  6. Restart the rh-mongodb34-mongod service:

    # systemctl restart rh-mongodb34-mongod
  7. Open port 27017 for MongoDB:

    # firewall-cmd --add-port=27017/tcp
    # firewall-cmd --runtime-to-permanent
  8. From Satellite Server, test that you can access the database. If the connection succeeds, the command returns 1.

    # scl enable rh-mongodb34 " mongo --host mongo.example.com \
    -u pulp -p pulp_password --port 27017 --eval 'ping:1' pulp_database"

3.8.5. Installing PostgreSQL

You can install only the same version of PostgreSQL that is installed with the satellite-installer tool during an internal database installation. Satellite supports only a specific version of PostgreSQL that is available through Red Hat Enterprise Linux Server 7 repositories. You can install PostgreSQL using rhel-7-server-rpms repositories or from an external source, as long as the version is supported. For more information about the repository that contains the supported version of PostgreSQL, and what version is supported, see the Package Manifest.

  1. To install PostgreSQL, enter the following command:

    # yum install postgresql-server
  2. To initialize, start, and enable PostgreSQL service, enter the following commands:

    # postgresql-setup initdb
    # systemctl start postgresql
    # systemctl enable postgresql
  3. Edit the /var/lib/pgsql/data/postgresql.conf file:

    # vi /var/lib/pgsql/data/postgresql.conf
  4. Remove the # and edit to listen to inbound connections:

    listen_addresses = '*'
  5. Edit the /var/lib/pgsql/data/pg_hba.conf file:

    # vi /var/lib/pgsql/data/pg_hba.conf
  6. Add the following line to the file:

      host  all   all   satellite_server_ip/24   md5
  7. Restart PostgreSQL service to update with the changes:

    # systemctl restart postgresql
  8. Open the postgresql port on the external PostgreSQL server:

    # firewall-cmd --add-service=postgresql
    # firewall-cmd --runtime-to-permanent
  9. Switch to the postgres user and start the PostgreSQL client:

    $ su - postgres -c psql
  10. Create two databases and dedicated roles, one for Satellite and one for Candlepin:

    CREATE USER "foreman" WITH PASSWORD 'Foreman_Password';
    CREATE USER "candlepin" WITH PASSWORD 'Candlepin_Password';
    CREATE DATABASE foreman OWNER foreman;
    CREATE DATABASE candlepin OWNER candlepin;
  11. Exit the postgres user:

    # \q
  12. From Satellite Server, test that you can access the database. If the connection succeeds, the commands return 1.

    # PGPASSWORD='Foreman_Password' psql -h postgres.example.com  -p 5432 -U foreman -d foreman -c "SELECT 1 as ping"
    # PGPASSWORD='Candlepin_Password' psql -h postgres.example.com -p 5432 -U candlepin -d candlepin -c "SELECT 1 as ping"
  13. To install and configure the remote database for Satellite, enter the following command:

    satellite-installer --scenario satellite \
      --foreman-db-host postgres.example.com \
      --foreman-db-password Foreman_Password \
      --foreman-db-database foreman \
      --katello-candlepin-db-host postgres.example.com \
      --katello-candlepin-db-name candlepin \
      --katello-candlepin-db-password Candlepin_Password \
      --katello-candlepin-manage-db false \
      --katello-pulp-db-username pulp \
      --katello-pulp-db-password pulp_password \
      --katello-pulp-db-seeds mongo.example.com:27017 \
      --katello-pulp-db-name pulp_database

You can query the status of your databases. For example, enter the following command with the --only and add postgresql or rh-mongodb34-mongod:

For PostgreSQL, enter the following command:

# satellite-maintain service status --only postgresql

For MongoDB, enter the following command:

# satellite-maintain service status --only rh-mongodb34-mongod

3.9. Restricting Access to mongod

Only the apache and root users should be allowed access to the MongoDB database daemon, mongod, to reduce the risk of data loss.

Restrict access to mongod on Satellite and Capsule Servers using the following commands.

  1. Configure the Firewall.

    # firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 27017 -m owner --uid-owner apache -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 27017 -m owner --uid-owner apache -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 27017 -m owner --uid-owner root -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 27017 -m owner --uid-owner root -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 1 -o lo -p \
    tcp -m tcp --dport 27017 -j DROP \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 1 -o lo -p \
    tcp -m tcp --dport 27017 -j DROP \
    && firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 28017 -m owner --uid-owner apache -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 28017 -m owner --uid-owner apache -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 28017 -m owner --uid-owner root -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 0 -o lo -p \
    tcp -m tcp --dport 28017 -m owner --uid-owner root -j ACCEPT \
    && firewall-cmd  --direct --add-rule ipv4 filter OUTPUT 1 -o lo -p \
    tcp -m tcp --dport 28017 -j DROP \
    && firewall-cmd  --direct --add-rule ipv6 filter OUTPUT 1 -o lo -p \
    tcp -m tcp --dport 28017 -j DROP
  2. Make the changes persistent:

    # firewall-cmd --runtime-to-permanent

Chapter 4. Configuring External Services

Some environments have existing DNS, DHCP, and TFTP services and do not need to use the Satellite Server to provide these services. If you want to use external servers to provide DNS, DHCP, or TFTP, you can configure them for use with Satellite Server.

If you want to disable these services in Satellite in order to manage them manually, see Disabling DNS, DHCP, and TFTP for Unmanaged Networks for more information.

4.1. Configuring Satellite with External DNS

You can configure Satellite to use an external server to provide DNS service.

  1. Deploy a Red Hat Enterprise Linux Server and install the ISC DNS Service.

    # yum install bind bind-utils
  2. Create the configuration file for a domain.

    The following example configures a domain virtual.lan as one subnet 192.168.38.0/24, a security key named capsule, and sets forwarders to Google’s public DNS addresses (8.8.8.8 and 8.8.4.4). 192.168.38.2 is the IP address of a DNS server and 192.168.38.1 is the IP address of a Satellite Server or a Capsule Server.

    # cat /etc/named.conf
    include "/etc/rndc.key";
    
    controls  {
        inet 127.0.0.1 port 953 allow { 127.0.0.1; } keys { "capsule"; };
        inet 192.168.38.2 port 953 allow { 192.168.38.1; 192.168.38.2; } keys { "capsule"; };
    };
    
    options  {
        directory "/var/named";
        forwarders { 8.8.8.8; 8.8.4.4; };
    };
    
    include "/etc/named.rfc1912.zones";
    
    zone "38.168.192.in-addr.arpa" IN {
        type master;
        file "dynamic/38.168.192-rev";
        update-policy {
            grant "capsule" zonesub ANY;
        };
    };
    
    zone "virtual.lan" IN {
        type master;
        file "dynamic/virtual.lan";
        update-policy {
            grant "capsule" zonesub ANY;
        };
    };

    The inet line must be entered as one line in the configuration file.

  3. Create a key file.

    # ddns-confgen -k capsule

    This command can take a long time to complete.

  4. Copy and paste the output from the key section into a separate file called /etc/rndc.key.

    # cat /etc/rndc.key
    key "capsule" {
            algorithm hmac-sha256;
            secret "GeBbgGoLedEAAwNQPtPh3zP56MJbkwM84UJDtaUS9mw=";
    };
    Important

    This is the key used to change DNS server configuration. Only the root user should read and write to it.

  5. Create zone files.

    # cat /var/named/dynamic/virtual.lan
    $ORIGIN .
    $TTL 10800      ; 3 hours
    virtual.lan             IN SOA  service.virtual.lan. root.virtual.lan. (
                                    9          ; serial
                                    86400      ; refresh (1 day)
                                    3600       ; retry (1 hour)
                                    604800     ; expire (1 week)
                                    3600       ; minimum (1 hour)
                                    )
                            NS      service.virtual.lan.
    $ORIGIN virtual.lan.
    $TTL 86400      ; 1 day
    capsule                 A       192.168.38.1
    service                 A       192.168.38.2
  6. Create the reverse zone file.

    # cat /var/named/dynamic/38.168.192-rev
    $ORIGIN .
    $TTL 10800      ; 3 hours
    38.168.192.in-addr.arpa IN SOA  service.virtual.lan. root.38.168.192.in-addr.arpa. (
                                    4          ; serial
                                    86400      ; refresh (1 day)
                                    3600       ; retry (1 hour)
                                    604800     ; expire (1 week)
                                    3600       ; minimum (1 hour)
                                    )
                            NS      service.virtual.lan.
    $ORIGIN 38.168.192.in-addr.arpa.
    $TTL 86400      ; 1 day
    1                PTR     capsule.virtual.lan.
    2                PTR     service.virtual.lan.

    There should be no extra non-ASCII characters.

4.2. Verifying and Starting the DNS Service

  1. Validate the syntax.

    # named-checkconf -z /etc/named.conf
  2. Start the server.

    # systemctl restart named
  3. Add a new host.

    The following uses the example host 192.168.38.2. You should change this to suit your environment.

    # echo -e "server 192.168.38.2\n \
    update add aaa.virtual.lan 3600 IN A 192.168.38.10\n \
    send\n" | nsupdate -k /etc/rndc.key
  4. Test that the DNS service can resolve the new host.

    # nslookup aaa.virtual.lan 192.168.38.2
  5. If necessary, delete the new entry.

    # echo -e "server 192.168.38.2\n \
    update delete aaa.virtual.lan 3600 IN A 192.168.38.10\n \
    send\n" | nsupdate -k /etc/rndc.key
  6. Configure the firewall for external access to the DNS service (UDP and TCP on port 53).

    # firewall-cmd --add-port="53/udp" --add-port="53/tcp" \
    && firewall-cmd --runtime-to-permanent

4.3. Configuring Satellite Server with External DHCP

You can use this section to configure your Red Hat Satellite Server to work with an external DHCP server.

To configure the DHCP server and share the DHCP configuration and lease files

  1. Deploy a Red Hat Enterprise Linux Server and install the ISC DHCP Service and Berkeley Internet Name Domain (BIND).

    # yum install dhcp bind
  2. Generate a security token in an empty directory.

    # dnssec-keygen -a HMAC-MD5 -b 512 -n HOST omapi_key

    The above command can take a long time, for less-secure proof-of-concept deployments you can use a non-blocking random number generator.

    # dnssec-keygen -r /dev/urandom -a HMAC-MD5 -b 512 -n HOST omapi_key

    This creates the key pair in two files in the current directory.

  3. Copy the secret hash from the key.

    # cat Komapi_key.+*.private |grep ^Key|cut -d ' ' -f2
  4. Edit the dhcpd configuration file for all of the subnets and add the key as in the example:

    # cat /etc/dhcp/dhcpd.conf
    default-lease-time 604800;
    max-lease-time 2592000;
    log-facility local7;
    
    subnet 192.168.38.0 netmask 255.255.255.0 {
    	range 192.168.38.10 192.168.38.100;
    	option routers 192.168.38.1;
    	option subnet-mask 255.255.255.0;
    	option domain-search "virtual.lan";
    	option domain-name "virtual.lan";
    	option domain-name-servers 8.8.8.8;
    }
    
    omapi-port 7911;
    key omapi_key {
    	algorithm HMAC-MD5;
    	secret "jNSE5YI3H1A8Oj/tkV4...A2ZOHb6zv315CkNAY7DMYYCj48Umw==";
    };
    omapi-key omapi_key;
  5. Delete the two key files from the directory where you created them.
  6. Define each subnet on the Satellite Server.

    It is recommended to set up a lease range and reservation range separately to prevent conflicts. For example, the lease range is 192.168.38.10 to 192.168.38.100 so the reservation range (defined in the Satellite web UI) is 192.168.38.101 to 192.168.38.250. Do not set DHCP Capsule for the defined Subnet yet.

  7. Configure the firewall for external access to the DHCP server.

    # firewall-cmd --add-service dhcp \
    && firewall-cmd --runtime-to-permanent
  8. Determine the UID and GID numbers of the foreman user on the Satellite Server.

    # id -u foreman
    993
    # id -g foreman
    990
  9. Create the same user and group with the same IDs on the DHCP server.

    # groupadd -g 990 foreman
    # useradd -u 993 -g 990 -s /sbin/nologin foreman
  10. To make the configuration files readable, restore the read and execute flags.

    # chmod o+rx /etc/dhcp/
    # chmod o+r /etc/dhcp/dhcpd.conf
    # chattr +i /etc/dhcp/ /etc/dhcp/dhcpd.conf
  11. Start the DHCP service.

    # systemctl start dhcpd
  12. Export the DHCP configuration and leases files using NFS.

    # yum install nfs-utils
    # systemctl enable rpcbind nfs-server
    # systemctl start rpcbind nfs-server nfs-lock nfs-idmapd
  13. Create the DHCP configuration and leases files to be exported using NFS.

    # mkdir -p /exports/var/lib/dhcpd /exports/etc/dhcp
  14. Add the following line to the /etc/fstab file to create mount points for the newly created directories.

    /var/lib/dhcpd /exports/var/lib/dhcpd none bind,auto 0 0
    /etc/dhcp /exports/etc/dhcp none bind,auto 0 0
  15. Mount the file systems in /etc/fstab.

    # mount -a
  16. Ensure the following lines are present in /etc/exports:

    /exports 192.168.38.1(rw,async,no_root_squash,fsid=0,no_subtree_check)
    
    /exports/etc/dhcp 192.168.38.1(ro,async,no_root_squash,no_subtree_check,nohide)
    
    /exports/var/lib/dhcpd 192.168.38.1(ro,async,no_root_squash,no_subtree_check,nohide)
  17. Reload the NFS server.

    # exportfs -rva
  18. Configure the firewall for the DHCP omapi port 7911 for the Satellite Server.

    # firewall-cmd --add-port="7911/tcp" \
    && firewall-cmd --runtime-to-permanent
  19. If required, configure the firewall for external access to NFS.

    Clients are configured using NFSv3.

    • Use the firewalld daemon’s NFS service to configure the firewall.

      # firewall-cmd --zone public --add-service mountd \
      && firewall-cmd --zone public --add-service rpc-bind \
      && firewall-cmd --zone public --add-service nfs \
      && firewall-cmd --runtime-to-permanent

To configure the Satellite Server

  1. Install the NFS client.

    # satellite-maintain packages install nfs-utils
  2. Create the DHCP directories for NFS.

    # mkdir -p /mnt/nfs/etc/dhcp /mnt/nfs/var/lib/dhcpd
  3. Change the file owner.

    # chown -R foreman-proxy /mnt/nfs
  4. Verify communication with the NFS server and RPC communication paths.

    # showmount -e your_DHCP_server_FQDN
    # rpcinfo -p your_DHCP_server_FQDN
  5. Add the following lines to the /etc/fstab file:

    your_DHCP_server_FQDN:/exports/etc/dhcp /mnt/nfs/etc/dhcp nfs
    ro,vers=3,auto,nosharecache,context="system_u:object_r:dhcp_etc_t:s0" 0 0
    
    your_DHCP_server_FQDN:/exports/var/lib/dhcpd /mnt/nfs/var/lib/dhcpd nfs
    ro,vers=3,auto,nosharecache,context="system_u:object_r:dhcpd_state_t:s0" 0 0
  6. Mount the file systems on /etc/fstab.

    # mount -a
  7. Read the relevant files.

    # su foreman-proxy -s /bin/bash
    bash-4.2$ cat /mnt/nfs/etc/dhcp/dhcpd.conf
    bash-4.2$ cat /mnt/nfs/var/lib/dhcpd/dhcpd.leases
    bash-4.2$ exit
  8. Run the satellite-installer script to make the following persistent changes to the /etc/foreman-proxy/settings.d/dhcp.yml file.

    # satellite-installer --foreman-proxy-dhcp=true \
    --foreman-proxy-dhcp-provider=remote_isc \
    --foreman-proxy-plugin-dhcp-remote-isc-dhcp-config /mnt/nfs/etc/dhcp/dhcpd.conf \
    --foreman-proxy-plugin-dhcp-remote-isc-dhcp-leases /mnt/nfs/var/lib/dhcpd/dhcpd.leases \
    --foreman-proxy-plugin-dhcp-remote-isc-key-name=omapi_key \
    --foreman-proxy-plugin-dhcp-remote-isc-key-secret=jNSE5YI3H1A8Oj/tkV4...A2ZOHb6zv315CkNAY7DMYYCj48Umw== \
    --foreman-proxy-plugin-dhcp-remote-isc-omapi-port=7911 \
    --enable-foreman-proxy-plugin-dhcp-remote-isc \
    --foreman-proxy-dhcp-server=your_DHCP_server_FQDN
  9. Restart the foreman-proxy service.

    # systemctl restart foreman-proxy
  10. Log in to the Satellite Server web UI.
  11. Go to Infrastructure > Capsules. Locate the appropriate Capsule Server and from the Actions drop-down list, select Refresh. The DHCP feature should appear.
  12. Associate the DHCP service with the appropriate subnets and domain.

4.4. Configuring Satellite Server with External TFTP

Use this procedure to configure your Satellite Server with external TFTP services.

You can use TFTP services through NAT, for more information see Using TFTP services through NAT in the Provisioning guide.

Before You Begin

Configure Satellite Server with External TFTP

  1. Install and enable the TFTP server.

    # yum install tftp-server syslinux
  2. Enable and activate the tftp.socket unit.

    # systemctl enable tftp.socket
    # systemctl start tftp.socket
  3. Configure the PXELinux environment.

    # mkdir -p /var/lib/tftpboot/{boot,pxelinux.cfg,grub2}
    # cp /usr/share/syslinux/{pxelinux.0,menu.c32,chain.c32} \
    /var/lib/tftpboot/
  4. Restore SELinux file contexts.

    # restorecon -RvF /var/lib/tftpboot/
  5. Create the TFTP directory to be exported using NFS.

    # mkdir -p /exports/var/lib/tftpboot
  6. Add the newly created mount point to the /etc/fstab file.

    /var/lib/tftpboot /exports/var/lib/tftpboot none bind,auto 0 0
  7. Mount the file systems in /etc/fstab.

    # mount -a
  8. Ensure the following lines are present in /etc/exports:

    /exports 192.168.38.1(rw,async,no_root_squash,fsid=0,no_subtree_check)
    /exports/var/lib/tftpboot 192.168.38.1(rw,async,no_root_squash,no_subtree_check,nohide)

    The first line is common to the DHCP configuration and therefore should already be present if the previous procedure was completed on this system.

  9. Reload the NFS server.

    # exportfs -rva

4.4.1. Configuring the Firewall for External Access to TFTP

  1. Configure the firewall (UDP on port 69).

    # firewall-cmd --add-port="69/udp" \
    && firewall-cmd --runtime-to-permanent

4.5. Configuring Satellite or Capsule with External IdM DNS

Red Hat Satellite can be configured to use a Red Hat Identity Management (IdM) server to provide the DNS service. Two methods are described here to achieve this, both using a transaction key. For more information on Red Hat Identity Management, see the Linux Domain Identity, Authentication, and Policy Guide.

The first method is to install the IdM client which automates the process with the generic security service algorithm for secret key transaction (GSS-TSIG) technology defined in RFC3645. This method requires installing the IdM client on the Satellite Server or Capsule’s base system and having an account created by the IdM server administrator for use by the Satellite administrator. See Section 4.5.1, “Configuring Dynamic DNS Update with GSS-TSIG Authentication” to use this method.

The second method, secret key transaction authentication for DNS (TSIG), uses an rndc.key for authentication. It requires root access to the IdM server to edit the BIND configuration file, installing the BIND utility on the Satellite Server’s base system, and coping the rndc.key to between the systems. This technology is defined in RFC2845. See Section 4.5.2, “Configuring Dynamic DNS Update with TSIG Authentication” to use this method.

Note

You are not required to use Satellite to manage DNS. If you are using the Realm enrollment feature of Satellite, where provisioned hosts are enrolled automatically to IdM, then the ipa-client-install script creates DNS records for the client. The following procedure and Realm enrollment are therefore mutually exclusive. For more information on configuring Realm enrollment, see External Authentication for Provisioned Hosts in Administering Red Hat Satellite.

Determining where to install the IdM Client

When Satellite Server wants to add a DNS record for a host, it first determines which Capsule is providing DNS for that domain. It then communicates with the Capsule and adds the record. The hosts themselves are not involved in this process. This means you should install and configure the IdM client on the Satellite or Capsule that is currently configured to provide a DNS service for the domain you want to manage using the IdM server.

4.5.1. Configuring Dynamic DNS Update with GSS-TSIG Authentication

In this example, Satellite Server has the following settings.

Host name

satellite.example.com

Network

192.168.55.0/24

The IdM server has the following settings.

Host name

idm1.example.com

Domain name

example.com

Before you Begin.

  1. Confirm the IdM server is deployed and the host-based firewall has been configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
  2. Obtain an account on the IdM server with permissions to create zones on the IdM server.
  3. Confirm if the Satellite or an external Capsule is managing DNS for a domain.
  4. Confirm that the Satellite or external Capsule are currently working as expected.
  5. In the case of a newly installed system, complete the installation procedures in this guide first. In particular, DNS and DHCP configuration should have been completed.
  6. Make a backup of the answer file in case you have to revert the changes. See Specifying Installation Options for more information.

Create a Kerberos Principal on the IdM Server.

  1. Ensure you have a Kerberos ticket.

    # kinit idm_user

    Where idm_user is the account created for you by the IdM administrator.

  2. Create a new Kerberos principal for the Satellite or Capsule to use to authenticate to the IdM server.

    # ipa service-add capsule/satellite.example.com

Install and Configure the IdM Client.

Do this on the Satellite or Capsule Server that is managing the DNS service for a domain.

  1. Install the ipa-client package on Satellite Server or Capsule Server:

    • On Satellite Server, enter the following command:

      # satellite-maintain packages install ipa-client
    • On Capsule Server, enter the following command:

      # yum install ipa-client
  2. Configure the IdM client by running the installation script and following the on-screen prompts.

    # ipa-client-install
  3. Ensure you have a Kerberos ticket.

    # kinit admin
  4. Remove any preexisting keytab.

    # rm /etc/foreman-proxy/dns.keytab
  5. Get the keytab created for this system.

    # ipa-getkeytab -p capsule/satellite.example.com@EXAMPLE.COM \
    -s idm1.example.com -k /etc/foreman-proxy/dns.keytab
    Note

    When adding a keytab to a standby system with the same host name as the original system in service, add the r option to prevent generating new credentials and rendering the credentials on the original system invalid.

  6. Set the group and owner for the keytab file to foreman-proxy as follows.

    # chown foreman-proxy:foreman-proxy /etc/foreman-proxy/dns.keytab
  7. If required, check the keytab is valid.

    # kinit -kt /etc/foreman-proxy/dns.keytab \
    capsule/satellite.example.com@EXAMPLE.COM

Configure DNS Zones in the IdM web UI.

  1. Create and configure the zone to be managed:

    1. Navigate to Network Services > DNS > DNS Zones.
    2. Select Add and enter the zone name. In this example, example.com.
    3. Click Add and Edit.
    4. On the Settings tab, in the BIND update policy box, add an entry as follows to the semi-colon separated list.

      grant capsule\047satellite.example.com@EXAMPLE.COM wildcard * ANY;
    5. Ensure Dynamic update is set to True.
    6. Enable Allow PTR sync.
    7. Select Save to save the changes.
  2. Create and Configure the reverse zone.

    1. Navigate to Network Services > DNS > DNS Zones.
    2. Select Add.
    3. Select Reverse zone IP network and add the network address in CIDR format to enable reverse lookups.
    4. Click Add and Edit.
    5. On the Settings tab, in the BIND update policy box, add an entry as follows to the semi-colon separated list:

      grant capsule\047satellite.example.com@EXAMPLE.COM wildcard * ANY;
    6. Ensure Dynamic update is set to True.
    7. Select Save to save the changes.

Configure the Satellite or Capsule Server Managing the DNS Service for the Domain.

  • On a Satellite Server’s Base System.

    satellite-installer --scenario satellite \
    --foreman-proxy-dns=true \
    --foreman-proxy-dns-managed=true \
    --foreman-proxy-dns-provider=nsupdate_gss \
    --foreman-proxy-dns-server="idm1.example.com" \
    --foreman-proxy-dns-tsig-principal="capsule/satellite.example.com@EXAMPLE.COM" \
    --foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab \
    --foreman-proxy-dns-reverse="55.168.192.in-addr.arpa" \
    --foreman-proxy-dns-zone=example.com \
    --foreman-proxy-dns-ttl=86400
  • On a Capsule Server’s Base System.

    satellite-installer --scenario capsule \
    --foreman-proxy-dns=true \
    --foreman-proxy-dns-managed=true \
    --foreman-proxy-dns-provider=nsupdate_gss \
    --foreman-proxy-dns-server="idm1.example.com" \
    --foreman-proxy-dns-tsig-principal="capsule/satellite.example.com@EXAMPLE.COM" \
    --foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab \
    --foreman-proxy-dns-reverse="55.168.192.in-addr.arpa" \
    --foreman-proxy-dns-zone=example.com \
    --foreman-proxy-dns-ttl=86400

Restart the Satellite or Capsule’s Proxy Service.

# systemctl restart foreman-proxy

Update the Configuration in Satellite web UI.

After you have run the installation script to make any changes to a Capsule, instruct Satellite to scan the configuration on each affected Capsule as follows:

  1. Navigate to Infrastructure > Capsules.
  2. For each Capsule to be updated, from the Actions drop-down menu, select Refresh.
  3. Configure the domain:

    1. Go to Infrastructure > Domains and select the domain name.
    2. On the Domain tab, ensure DNS Capsule is set to the Capsule where the subnet is connected.
  4. Configure the subnet:

    1. Go to Infrastructure > Subnets and select the subnet name.
    2. On the Subnet tab, set IPAM to None.
    3. On the Domains tab, ensure the domain to be managed by the IdM server is selected.
    4. On the Capsules tab, ensure Reverse DNS Capsule is set to the Capsule where the subnet is connected.
    5. Click Submit to save the changes.

4.5.2. Configuring Dynamic DNS Update with TSIG Authentication

In this example, Satellite Server has the following settings.

IP address

192.168.25.1

Host name

satellite.example.com

The IdM server has the following settings.

Host name

idm1.example.com

IP address

192.168.25.2

Domain name

example.com

Before you Begin

  1. Confirm the IdM Server is deployed and the host-based firewall has been configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
  2. Obtain root user privileges on the IdM server.
  3. Confirm if the Satellite or an external Capsule is managing DNS for a domain.
  4. Confirm that the Satellite or external Capsule are currently working as expected.
  5. In the case of a newly installed system, complete the installation procedures in this guide first. In particular, DNS and DHCP configuration should have been completed.
  6. Make a backup of the answer file in case you have to revert the changes. See Specifying Installation Options for more information.

Enabling External Updates to the DNS Zone in the IdM Server

  1. On the IdM Server, add the following to the top of the /etc/named.conf file.

    // This was added to allow Satellite Server at 192.168.25.1 to make DNS updates.
    ########################################################################
    include "/etc/rndc.key";
    controls  {
    inet 192.168.25.2 port 953 allow { 192.168.25.1; } keys { "rndc-key"; };
    };
    ########################################################################
  2. Reload named to make the changes take effect.

    # systemctl reload named
  3. In the IdM web UI, go to Network Services > DNS > DNS Zones. Select the name of the zone. On the Settings tab:

    1. Add the following in the BIND update policy box.

      grant "rndc-key" zonesub ANY;
    2. Ensure Dynamic update is set to True.
    3. Click Update to save the changes.
  4. Copy the /etc/rndc.key file from the IdM server to Satellite’s base system as follows.

    # scp /etc/rndc.key root@satellite.example.com:/etc/rndc.key
  5. Ensure that the ownership, permissions, and SELinux context are correct.

    # restorecon -v /etc/rndc.key
    # chown -v root:named /etc/rndc.key
    # chmod -v 640 /etc/rndc.key
  6. On Satellite Server, run the installation script as follows to use the external DNS server.

    # satellite-installer --scenario satellite \
    --foreman-proxy-dns=true \
    --foreman-proxy-dns-managed=false \
    --foreman-proxy-dns-provider=nsupdate \
    --foreman-proxy-dns-server="192.168.25.2" \
    --foreman-proxy-keyfile=/etc/rndc.key \
    --foreman-proxy-dns-ttl=86400

Testing External Updates to the DNS Zone in the IdM Server

  1. Install bind-utils for testing with nsupdate.

    # yum install bind-utils
  2. Ensure the key in the /etc/rndc.key file on Satellite Server is the same one as used on the IdM server.

    key "rndc-key" {
            algorithm hmac-md5;
            secret "secret-key==";
    };
  3. On Satellite Server, create a test DNS entry for a host. For example, host test.example.com with an A record of 192.168.25.20 on the IdM server at 192.168.25.1.

    # echo -e "server 192.168.25.1\n \
    update add test.example.com 3600 IN A 192.168.25.20\n \
    send\n" | nsupdate -k /etc/rndc.key
  4. On Satellite Server, test the DNS entry.

    # nslookup test.example.com 192.168.25.1
    Server:		192.168.25.1
    Address:	192.168.25.1#53
    
    Name:	test.example.com
    Address: 192.168.25.20
  5. To view the entry in the IdM web UI, go to Network Services > DNS > DNS Zones. Select the name of the zone and search for the host by name.
  6. If resolved successfully, remove the test DNS entry.

    # echo -e "server 192.168.25.1\n \
    update delete test.example.com 3600 IN A 192.168.25.20\n \
    send\n" | nsupdate -k /etc/rndc.key
  7. Confirm that the DNS entry was removed.

    # nslookup test.example.com 192.168.25.1

    The above nslookup command fails and returns the SERVFAIL error message if the record was successfully deleted.

4.5.3. Reverting to Internal DNS Service

To revert to using Satellite Server and Capsule Server as DNS providers, follow this procedure.

On the Satellite or Capsule Server that is to manage DNS for the domain.

  • If you backed up the answer file before the change to external DNS, restore the answer file and then run the installation script:

    # satellite-installer
  • If you do not have a suitable backup of the answer file, back up the answer file now, and then run the installation script on Satellite and Capsules as described below.

    See Specifying Installation Options for more information on the answer file.

To configure Satellite or Capsule as DNS server without using an answer file.

# satellite-installer \
--foreman-proxy-dns=true \
--foreman-proxy-dns-managed=true \
--foreman-proxy-dns-provider=nsupdate \
--foreman-proxy-dns-server="127.0.0.1"  \
--foreman-proxy-dns-tsig-principal="foremanproxy/satellite.example.com@EXAMPLE.COM" \
--foreman-proxy-dns-tsig-keytab=/etc/foreman-proxy/dns.keytab

See Configuring DNS, DHCP, and TFTP on Capsule Server for more information.

Update the Configuration in Satellite web UI.

After you have run the installation script to make any changes to a Capsule, instruct Satellite to scan the configuration on each affected Capsule as follows:

  1. Navigate to Infrastructure > Capsules.
  2. For each Capsule to be updated, from the Actions drop-down menu, select Refresh.
  3. Configure the domain:

    1. Go to Infrastructure > Domains and select the domain name.
    2. On the Domain tab, ensure DNS Capsule is set to the Capsule where the subnet is connected.
  4. Configure the subnet:

    1. Go to Infrastructure > Subnets and select the subnet name.
    2. On the Subnet tab, set IPAM to DHCP or Internal DB.
    3. On the Domains tab, ensure the domain to be managed by the Satellite or Capsule is selected.
    4. On the Capsules tab, ensure Reverse DNS Capsule is set to the Capsule where the subnet is connected.
    5. Click Submit to save the changes.

Chapter 5. Uninstalling Satellite Server

If you no longer need Satellite Server or Capsule Server, you can uninstall them.

Uninstalling Satellite Server erases all applications used on the target system. If you use any applications or application data for purposes other than Satellite Server, you should back up the information before the removal process.

Before you Begin

The katello-remove script issues two warnings, requiring confirmation before removing all packages and configuration files in the system.

Warning

This script erases many packages and config files, such as the following important packages:

  • httpd (apache)
  • mongodb
  • tomcat6
  • puppet
  • ruby
  • rubygems
  • All Katello and Foreman Packages

Uninstall Satellite Server

  1. Uninstall Satellite Server.

    # katello-remove

Appendix A. Large Deployment Considerations

Increasing the Maximum Number of File Descriptors for Apache

With more than 800 content hosts registered, Apache can reach several system-level limits, resulting in new content host registration failure. To avoid this, file descriptor limits must be increased before deploying a large number of content hosts.

  1. Create the /etc/systemd/system/httpd.service.d/limits.conf file and insert the following text:

    [Service]
    LimitNOFILE=65536
  2. Apply the changes to the unit.

    # systemctl daemon-reload
  3. Restart the satellite-maintain services.

    # satellite-maintain service restart

Increasing the Maximum Number of File Descriptors for qpid

With more than 1100 content hosts with goferd running for errata updates, the qpid reach system-level limits, resulting in registration failures. To avoid this, file descriptors limits must be increased before deploying a large number of content hosts.

Increasing the Maximum Number of File Descriptors for qpid

  1. Create the /etc/systemd/system/qpidd.service.d/limits.conf file and insert the following text:

    [Service]
    LimitNOFILE=65536
  2. Apply the changes to the unit.

    # systemctl daemon-reload
    # systemctl restart qpidd.service

Increasing the Shared Buffer and Work Memory

You can increase the shared_buffer and work_mem to 256M and 4M respectively.

  1. On Red Hat Enterprise Linux 7, create the /var/lib/pgsql/data/postgresql.conf file and insert the following text:

    work_mem = 4MB
    shared_buffers = 256MB
  2. Restart postgresql services.

    # systemctl restart postgresql

Increasing Concurrent Content Host Registrations

To avoid reaching system-level limits, you can increase the global passenger queue limit to accommodate up to 250 concurrent content hosts.

To increase the global passenger queue limit, complete the following steps:

  1. Adjust the maximum passenger pool size to 1.5 times the physical CPU cores available to the Satellite Server.

    For example, if you have a Satellite Server with 16 cores, then the maximum passenger pool size is 24. This number is referenced as an example and you should use the number applicable to your environment.

  2. Edit the /etc/httpd/conf.d/passenger.conf file, updating the IfModule stanza to match the following text:

    <IfModule mod_passenger.c>
      PassengerRoot /usr/share/gems/gems/passenger-4.0.18/lib/phusion_passenger/locations.ini
      PassengerRuby /usr/bin/ruby
      PassengerMaxPoolSize 24
      PassengerMaxRequestQueueSize 200
      PassengerStatThrottleRate 120
    </IfModule>
  3. Edit the Foreman Passenger application configuration file /etc/httpd/conf.d/05-foreman-ssl.conf, updating the stanza starting with PassengerAppRoot to match the following text:

     PassengerAppRoot /usr/share/foreman
     PassengerRuby /usr/bin/tfm-ruby
     PassengerMinInstances 6
     PassengerStartTimeout 90
     PassengerMaxPreloaderIdleTime 0
     PassengerMaxRequests 10000
     PassengerPreStart https://example.com
  4. Edit the Puppet Passenger application configuration file /etc/httpd/conf.d/25-puppet.conf, adding the following text to the end of the virtual host definition:

     PassengerMinInstances 6
     PassengerStartTimeout 90
     PassengerMaxPreloaderIdleTime 0
     PassengerMaxRequests 10000
     PassengerPreStart https://example.com:8140
  5. Change the maximum connections in the /var/lib/pgsql/data/postgresql.conf file.

    max_connections = 500
  6. Restart postgresql services.

    # systemctl restart postgresql

Increasing the maximum number of open files for qdrouterd

With more than 1000 content hosts registered, qdrouterd can reach the default maximum number of open files. To avoid this, increase the maximum number of open files on the Satellite Server and all external Capsule Servers.

  1. Calculate the required maximum number of open files, using the following equation.

    (3 x number of content hosts) + 100

    For example, with 1020 content hosts, the new maximum should be set to 3160 ((3 x 1020) + 100).

  2. Create the file /etc/systemd/system/qdrouterd.service.d/limits.conf and add the following text.

    [Service]
    LimitNOFILE=maximum_number_of_files
    1. Apply the changes to the unit.

      # systemctl daemon-reload
    2. Restart the satellite-maintain services.

      # satellite-maintain service restart

Reducing delays in host registration

Communication between Satellite and each registered host is secured by use of certificates. When a host is registered, Satellite creates two certificates, an identity certificate and a Puppet certificate. The algorithm used to create each certificate requires random data from the Red Hat Enterprise Linux kernel. If not enough entropy is available when a host is registered, there is a delay until a suitable level of entropy is available. In very large environments, with more than 10,000 hosts, the rate of host registration is likely to be slowed by the lack of entropy. Several methods can be used to improve the availability of entropy to the Linux kernel, and so reduce the risk to performance of Satellite.

By default, the Linux kernel uses the /dev/random device as the source of random numbers. This is a blocking device, which means it stops supplying numbers when it determines that the amount of entropy is insufficient for generating a properly random output. It is this wait time which causes the delay in registering hosts. To resolve this issue, use the /dev/urandom device, as this is a non-blocking device.

Some hardware servers have processors which include hardware random number generators. For those that are supported by the Red Hat Enterprise Linux kernel, you can use that as the source of random numbers. For more information, see the hardware vendor’s documentation.

If Satellite is hosted on a virtual machine, note that some hypervisors make the hardware server’s random number generator available to the virtual machines it hosts. Red Hat Virtualization features the virtio RNG (Random Number Generator) device that provides KVM virtual machines access to entropy from the Red Hat Virtualization Host. On guests running Red Hat Enterprise Linux 7.0, you must install and configure rngd. On guests running Red Hat Enterprise Linux 7.1 and later, the guest kernel fetches entropy from the host as required. If a host’s random number generator is shared by guests, use of a hardware random number generator is recommended.

For more information about random number generators for guests, see Random Number Generator Device in the Red Hat Enterprise Linux 7 Virtualization Deployment and Administration Guide. For other hypervisors, see the vendor’s documentation.

For more information about the random number generator daemon, rngd, see Using the Random Number Generator in the Red Hat Enterprise Linux 7 Security Guide.

A.1. Tuning Satellite Server with Predefined Profiles

If your Satellite deployment includes more than 5000 hosts, you can use predefined tuning profiles to improve performance of Satellite Server. Choose one of the profiles depending on the number of hosts your Satellite manages and available hardware resources. The tuning profiles are available in the satellite-support GitHub repository.

MEDIUM

Number of managed hosts: 5001-10000

RAM: 32G

Number of CPU cores: 8

LARGE

Number of managed hosts: 10001-20000

RAM: 64G

Number of CPU cores: 16

X-LARGE

Number of managed hosts: 20001-60000

RAM: 128G

Number of CPU cores: 32

2X-LARGE

Number of managed hosts: 60000+

RAM: 256G

Number of CPU cores: 48+

Procedure

To configure a tuning profile for your Satellite deployment, complete the following steps:

  1. On Satellite Server, back up the /etc/foreman-installer/custom-hiera.yaml file to custom-hiera.original:

    # mv /etc/foreman-installer/custom-hiera.yaml \
    /etc/foreman-installer/custom-hiera.original
  2. In your browser, navigate to tuning profiles in the satellite-support GitHub repository and click the profile that matches your Satellite deployment.
  3. Click the Raw button and preserve the URL to download the profile in the next step.
  4. Download the tuning profile, for example, using curl with the URL of the profile in the raw format:

    # curl -O https://raw.githubusercontent.com/RedHatSatellite/satellite-support/master/tuning-profiles/custom-hiera-large-64G.yaml
  5. Copy the tuning profile that matches your Satellite deployment to /etc/foreman-installer/custom-hiera.yaml:

    # cp custom-hiera-large-64G.yaml /etc/foreman-installer/custom-hiera.yaml
  6. Optional: If you added custom settings to custom-hiera.yaml, copy them from the backed up to the new custom-hiera.yaml file:
  7. Optional: If you upgrade your Satellite, search the backed up /etc/foreman-installer/custom-hiera.original file for the strings in the following format and copy them to the new /etc/foreman-installer/custom-hiera.yaml file:

    # Added by foreman-installer during upgrade, run the installer with --upgrade-mongo-storage to upgrade to WiredTiger.
    mongodb::server::storage_engine: 'mmapv1'
  8. Enter the satellite-installer command with no arguments to apply settings:

    # satellite-installer

Appendix B. Applying Custom Configuration to Red Hat Satellite

When you install and configure Satellite for the first time using satellite-installer, you can specify that the DNS and DHCP configuration files are not to be managed by Puppet using the installer flags --foreman-proxy-dns-managed=false and --foreman-proxy-dhcp-managed=false. If these flags are not specified during the initial installer run, rerunning of the installer overwrites all manual changes, for example, rerun for upgrade purposes. If changes are overwritten, you must run the restore procedure to restore the manual changes. For more information, see How to Restore Manual Changes Overwritten by a Puppet Run in Installing Satellite Server from a Connected Network.

To view all installer flags available for custom configuration, run satellite-installer --scenario satellite --full-help. Some Puppet classes are not exposed to the Satellite installer. To manage them manually and prevent the installer from overwriting their values, specify the configuration values by adding entries to configuration file /etc/foreman-installer/custom-hiera.yaml. This configuration file is in YAML format, consisting of one entry per line in the format of <puppet class>::<parameter name>: <value>. Configuration values specified in this file persist across installer reruns.

Common examples include:

  • For Apache, to set the ServerTokens directive to only return the Product name:

    apache::server_tokens: Prod
  • To turn off the Apache server signature entirely:

    apache::server_signature: Off
  • For Pulp, to configure the number of pulp workers:

    pulp::num_workers: 8

The Puppet modules for the Satellite installer are stored under /usr/share/foreman-installer/modules. Check the .pp files (for example: moduleName/manifests/example.pp) to look up the classes, parameters, and values. Alternatively, use the grep command to do keyword searches.

Setting some values may have unintended consequences that affect the performance or functionality of Red Hat Satellite. Consider the impact of the changes before you apply them, and test the changes in a non-production environment first. If you do not have a non-production Satellite environment, run the Satellite installer with the --noop and --verbose options. If your changes cause problems, remove the offending lines from custom-hiera.yaml and rerun the Satellite installer. If you have any specific questions about whether a particular value is safe to alter, contact Red Hat support.

B.1. How to Restore Manual Changes Overwritten by a Puppet Run

If your manual configuration has been overwritten by a Puppet run, you can restore the files to the previous state. The following example shows you how to restore a DHCP configuration file overwritten by a Puppet run.

  1. Copy the file you intend to restore. This allows you to compare the files to check for any mandatory changes required by the upgrade. This is not common for DNS or DHCP services.

    # cp /etc/dhcp/dhcpd.conf /etc/dhcp/dhcpd.backup
  2. Check the log files to note down the md5sum of the overwritten file. For example:

    # journalctl -xe
    ...
    /Stage[main]/Dhcp/File[/etc/dhcp/dhcpd.conf]: Filebucketed /etc/dhcp/dhcpd.conf to puppet with sum 622d9820b8e764ab124367c68f5fa3a1
    ...
  3. Restore the overwritten file:

    # puppet filebucket restore --local --bucket \
    /var/lib/puppet/clientbucket /etc/dhcp/dhcpd.conf \ 622d9820b8e764ab124367c68f5fa3a1
  4. Compare the backup file and the restored file, and edit the restored file to include any mandatory changes required by the upgrade.

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