Installing Satellite Server from a Disconnected Network

Red Hat Satellite 6.10

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

Before you install Satellite, ensure that your environment meets the following requirements.

1.1. System Requirements

The following requirements apply to the networked base operating 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 RAM is required for Satellite Server to function. In addition, a minimum of 4 GB RAM of swap space is also recommended. Satellite running with less RAM 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:

  • apache
  • foreman
  • foreman-proxy
  • postgres
  • pulp
  • puppet
  • puppetserver
  • qdrouterd
  • qpidd
  • tomcat

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?.

SELinux Mode

SELinux must be enabled, either in enforcing or permissive mode. Installation with disabled SELinux is not supported.

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

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 6, 7, and 8 repositories synchronized.

1.2.1. Red Hat Enterprise Linux 7

Table 1.1. Storage Requirements for a Satellite Server Installation

DirectoryInstallation SizeRuntime Size

/var/log/

10 MB

10 GB

/var/opt/rh/rh-postgresql12

100 MB

20 GB

/usr

3 GB

Not Applicable

/opt

3 GB

Not Applicable

/opt/puppetlabs

500 MB

Not Applicable

/var/lib/pulp/

1 MB

300 GB

/var/lib/qpidd/

25 MB

Not Applicable

1.3. Storage Guidelines

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

  • If you mount the /tmp directory as a separate file system, you must use the exec mount option in the /etc/fstab file. If /tmp is already mounted with the noexec option, you must change the option to exec and re-mount the file system. This is a requirement for the puppetserver service to work.
  • Because most Satellite Server data is stored in the /var directory, mounting /var on LVM storage can help the system to scale.
  • 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/.
  • Use high-bandwidth, low-latency storage for the /var/lib/pulp/ 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 Operations for more information on using the fio tool.

File System Guidelines

  • 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 Red Hat Enterprise Linux 7 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 the /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  nfs  context="system_u:object_r:var_lib_t:s0"  1 2

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

# restorecon -R /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/pulp/ directory. These end points are not manually configurable. Ensure that storage is available on the /var file system to prevent storage problems.

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/.

1.4. Supported Operating Systems

You can install the operating system from a 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 6.10 is installed. Previous versions of Red Hat Enterprise Linux including EUS or z-stream are not supported.

The following operating systems are supported by the installer, have packages, and are tested for deploying Satellite:

Table 1.2. Operating Systems supported by satellite-installer

Operating System

Architecture

Notes

Red Hat Enterprise Linux 7

x86_64 only

 

Before you install Satellite, apply all operating system updates if possible.

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.

1.5. Supported Browsers

Satellite supports recent versions of Firefox and Google Chrome browsers.

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

1.6. 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 operating 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.

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

Table 1.3. Satellite Server incoming traffic

Destination Port

Protocol

Service

Source

Required For

Description

53

TCP and UDP

DNS

DNS Servers and clients

Name resolution

DNS (optional)

67

UDP

DHCP

Client

Dynamic IP

DHCP (optional)

69

UDP

TFTP

Client

TFTP Server (optional)

 

443

TCP

HTTPS

Capsule

Red Hat Satellite API

Communication from Capsule

443, 80

TCP

HTTPS, HTTP

Client

Content Retrieval

Content

443, 80

TCP

HTTPS, HTTP

Capsule

Content Retrieval

Content

443, 80

TCP

HTTPS, HTTP

Client

Content Host Registration

Capsule CA RPM installation

443

TCP

HTTPS

Red Hat Satellite

Content Mirroring

Management

443

TCP

HTTPS

Red Hat Satellite

Capsule API

Smart Proxy functionality

5646

TCP

AMQP

Capsule

Katello agent

Forward message to Qpid dispatch router on Satellite (optional)

5910 - 5930

TCP

HTTPS

Browsers

Compute Resource’s virtual console

 

8000

TCP

HTTP

Client

Provisioning templates

Template retrieval for client installers, iPXE or UEFI HTTP Boot

8000

TCP

HTTPS

Client

PXE Boot

Installation

8140

TCP

HTTPS

Client

Puppet agent

Client updates (optional)

8443

TCP

HTTPS

Client

Content Host registration

Initiation

Uploading facts

Sending installed packages and traces

9090

TCP

HTTPS

Client

OpenSCAP

Configure Client

9090

TCP

HTTPS

Discovered Node

Discovery

Host discovery and provisioning

9090

TCP

HTTPS

Red Hat Satellite

Capsule API

Capsule functionality

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 operating system on which a Capsule Server is running.

A DHCP Capsule performs ICMP ping or TCP echo connection attempts to hosts in subnets with DHCP IPAM set to find out if an IP address considered for use is free. This behavior can be turned off using satellite-installer --foreman-proxy-dhcp-ping-free-ip=false.

Table 1.4. Satellite Server outgoing traffic

Destination Port

Protocol

Service

Destination

Required For

Description

 

ICMP

ping

Client

DHCP

Free IP checking (optional)

7

TCP

echo

Client

DHCP

Free IP checking (optional)

22

TCP

SSH

Target host

Remote execution

Run jobs

22, 16514

TCP

SSH SSH/TLS

Compute Resource

Satellite originated communications, for compute resources in libvirt

 

53

TCP and UDP

DNS

DNS Servers on the Internet

DNS Server

Resolve DNS records (optional)

53

TCP and UDP

DNS

DNS Server

Capsule DNS

Validation of DNS conflicts (optional)

53

TCP and UDP

DNS

DNS Server

Orchestration

Validation of DNS conflicts

68

UDP

DHCP

Client

Dynamic IP

DHCP (optional)

80

TCP

HTTP

Remote repository

Content Sync

Remote yum repository

389, 636

TCP

LDAP, LDAPS

External LDAP Server

LDAP

LDAP authenticatiion, necessary only if external authentication is enabled. The port can be customized when LDAPAuthSource is defined

443

TCP

HTTPS

Satellite

Capsule

Capsule

Configuration management

Template retrieval

OpenSCAP

Remote Execution result upload

443

TCP

HTTPS

Amazon EC2, Azure, Google GCE

Compute resources

Virtual machine interactions (query/create/destroy) (optional)

443

TCP

HTTPS

Capsule

Content mirroring

Initiation

443

TCP

HTTPS

Infoblox DHCP Server

DHCP management

When using Infoblox for DHCP, management of the DHCP leases (optional)

623

  

Client

Power management

BMC On/Off/Cycle/Status

5000

TCP

HTTPS

OpenStack Compute Resource

Compute resources

Virtual machine interactions (query/create/destroy) (optional)

5646

TCP

AMQP

Satellite Server

Katello agent

Forward message to Qpid dispatch router on Capsule (optional)

5671

  

Qpid

Remote install

Send install command to client

5671

  

Dispatch router (hub)

Remote install

Forward message to dispatch router on Satellite

5671

  

Satellite Server

Remote install for Katello agent

Send install command to client

5671

  

Satellite Server

Remote install for Katello agent

Forward message to dispatch router on Satellite

5900 - 5930

TCP

SSL/TLS

Hypervisor

noVNC console

Launch noVNC console

7911

TCP

DHCP, OMAPI

DHCP Server

DHCP

The DHCP target is configured using --foreman-proxy-dhcp-server and defaults to localhost

ISC and remote_isc use a configurable port that defaults to 7911 and uses OMAPI

8443

TCP

HTTPS

Client

Discovery

Capsule sends reboot command to the discovered host (optional)

9090

TCP

HTTPS

Capsule

Capsule API

Management of Capsules

1.7. 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 procedure 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 Ports and Firewalls Requirements.

Procedure

  1. To open the ports for client to Satellite communication, enter the following command on the base operating 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"
  2. Make the changes persistent:

    # firewall-cmd --runtime-to-permanent

1.8. Verifying Firewall Settings

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

Procedure

  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.

1.9. Verifying DNS resolution

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

Procedure

  1. 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
  2. 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, tasks such as content management, subscription management, and provisioning will fail.

Chapter 2. Installing Satellite Server

When the intended host for Satellite Server is in a disconnected environment, you can install Satellite Server by using an external computer to download an ISO image of the packages, and copying the packages to the system you want to install Satellite Server on. This method is not recommended for any other situation as ISO images might not contain the latest updates, bug fixes, and functionality.

Use the following procedures to install Satellite Server, perform the initial configuration, and import subscription manifests.

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

Note

You cannot register Satellite Server to itself.

2.1. Downloading the Binary DVD Images

Use this procedure to download the ISO images for Red Hat Enterprise Linux and Red Hat Satellite.

Procedure

  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 operating 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 operating 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 operating system or other accessible storage device.

    # scp localfile username@hostname:remotefile

2.2. Configuring the Base Operating System with Offline Repositories

Use this procedure to configure offline repositories for the Red Hat Enterprise Linux and Red Hat Satellite ISO images.

Procedure

  1. Create a directory to serve as the mount point for the ISO file corresponding to the base operating 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 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

2.3. Installing the Satellite Packages from the Offline Repositories

Use this procedure to install the Satellite packages from the offline repositories.

Procedure

  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 operating 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

    If you have successfully installed the Satellite packages, the following message is displayed: Install is complete. Please run satellite-installer --scenario satellite.

2.4. Resolving Package Dependency Errors

If there are package dependency errors during installation of Satellite Server packages, you can resolve the errors by downloading and installing packages from Red Hat Customer Portal. For more information about resolving dependency errors, see the KCS solution How can I use the yum output to solve yum dependency errors?.

If you have successfully installed the Satellite packages, skip this procedure.

Procedure

  1. Go to the 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 operating system.
  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. Change to the directory where the Satellite ISO is mounted:

    # cd /media/sat6/
  14. Verify that you have resoled the package dependency errors by installing Satellite Server packages. If there are further package dependency errors, repeat this procedure.

    # ./install_packages

    If you have successfully installed the Satellite packages, the following message is displayed: Install is complete. Please run satellite-installer --scenario satellite.

2.5. Synchronizing the System Clock With chronyd

To minimize the effects of time drift, you must synchronize the system clock on the base operating system on which you want to install Satellite Server with Network Time Protocol (NTP) servers. If the base operating 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

  1. Install the chrony package:

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

    # systemctl start chronyd
    # systemctl enable chronyd

2.6. Installing the SOS Package on the Base Operating System

Install the sos package on the base operating system so that you can 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.

Procedure

  1. Install the sos package:

    # yum install sos

2.7. Configuring Satellite Server

Install Satellite Server using the satellite-installer installation script. Choose from one of the following methods:

  • Section 2.7.1, “Configuring Satellite”. 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.
Note

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

2.7.1. Configuring Satellite

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 PostgreSQL databases on the same server.

The installation process can take tens of minutes to complete. If you are connecting remotely to the system, use a utility such as screen or tmux 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.

Considerations

  • 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.
  • 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.
  • Remote Execution is the primary method of managing packages on Content Hosts. If you want to use the deprecated Katello Agent instead of Remote Execution SSH, use the --foreman-proxy-content-enable-katello-agent=true option to enable it. The same option should be given on any Capsule Server as well as Satellite Server.
  • 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 Applying Custom Configuration to Satellite.

Procedure

  1. Enter the following command with any additional options that you want to use:

    # 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-installer --scenario satellite.log.

  2. Unmount the ISO images:

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

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

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

CLI procedure

  • Enter the following command on Satellite Server:

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

2.9. Importing a Subscription Manifest into Satellite Server

Use the following procedure to import a Subscription Manifest into Satellite Server.

Prerequisites

Procedure

  1. In the Satellite web UI, ensure the context is set to the organization you want to use.
  2. Navigate to Content > Subscriptions and click Manage Manifest.
  3. In the Manage Manifest window, click Browse.
  4. Navigate to the location that contains the Subscription Manifest file, then click Open. If the Manage Manifest window does not close automatically, click Close to return to the Subscriptions window.

CLI procedure

  1. Copy the Subscription Manifest file from your client to Satellite Server:

    $ scp ~/manifest_file.zip root@satellite.example.com:~/.
  2. Log in to Satellite Server as the root user and import the Subscription Manifest file:

    # hammer subscription upload \
    --file ~/manifest_file.zip \
    --organization "organization_name"

Chapter 3. Performing Additional Configuration on Satellite Server

3.1. Configuring Satellite to Synchronize Content with a Local CDN Server

In a disconnected environment, you must ensure that Satellite Server contains the required content to provision systems with the latest security updates, errata, and packages. To do this, follow this procedure to download content ISO images from the Red Hat Customer Portal and import them into a local CDN server. You can host the local CDN server on the base operating system of Satellite Server or on a system that is accessible to Satellite over HTTP. Next, you must configure Satellite Server to synchronize content with the local CDN server.

Procedure

  1. Log on to the Red Hat Customer Portal at https://access.redhat.com.
  2. In the upper left of the window, click Downloads and select Red Hat Satellite.
  3. Click the Content ISOs tab. This page lists all the products that are available in your subscription.
  4. Click the link for the product name, such as Red Hat Enterprise Linux 7 Server (x86_64) to download the ISO image.
  5. Copy all of Satellite Content ISO images to a system that you want to use as a local CDN server. For example, the /root/isos directory on Satellite Server.

    Note that storing the content on the same system where Satellite is installed is not a requirement. The CDN can be hosted on a different system inside the same disconnected network as long as it is accessible to Satellite Server over HTTP.

  6. On the system that you want to use as your local CDN server, create a local directory that is accessible over httpd. For example, /var/www/html/pub/sat-import/:

    # mkdir -p /var/www/html/pub/sat-import/
  7. Create a mount point and temporarily mount the ISO image at that location:

    # mkdir /mnt/iso
    # mount -o loop /root/isos/first_iso /mnt/iso
  8. Recursively copy content of the first ISO image to the local directory:

    # cp -ruv /mnt/iso/* /var/www/html/pub/sat-import/
  9. If you do not plan to use the mounted binary DVD ISO image, unmount and remove the mount point:

    # umount /mnt/iso
    # rmdir /mnt/iso
  10. Repeat the above step for each ISO image until you have copied all the data from the Content ISO images into /var/www/html/pub/sat-import/.
  11. Ensure that the SELinux context for the directory is correct:

    # restorecon -rv /var/www/html/pub/sat-import/
  12. In the Satellite web UI, navigate to Content > Subscriptions.
  13. Click Manage Manifest.
  14. Edit the Red Hat CDN URL field to point to the host name of the system that you use as a local CDN server with the newly created directory, for example:

    http://server.example.com/pub/sat-import/

  15. Click Update and then upload your manifest into Satellite.

3.2. Importing Kickstart Repositories

Kickstart repositories are not provided by the Content ISO image. To use Kickstart repositories in your disconnected Satellite, you must download a binary DVD ISO file for the version of Red Hat Enterprise Linux that you want to use and copy the Kickstart files to Satellite.

To import Kickstart repositories for Red Hat Enterprise Linux 7, complete Section 3.2.1, “Importing Kickstart Repositories for Red Hat Enterprise Linux 7”.

To import Kickstart repositories for Red Hat Enterprise Linux 8, complete Section 3.2.2, “Importing Kickstart Repositories for Red Hat Enterprise Linux 8”.

3.2.1. Importing Kickstart Repositories for Red Hat Enterprise Linux 7

To import Kickstart repositories for Red Hat Enterprise Linux 7, complete the following steps on Satellite.

Procedure

  1. Navigate to the Red Hat Customer Portal at https://access.redhat.com/ and log in.
  2. In the upper left of the window, click Downloads.
  3. To the right of Red Hat Enterprise Linux 7, click Versions 7 and below.
  4. From the Version list, select the required version of the Red Hat Enterprise Linux 7, for example 7.7.
  5. In the Download Red Hat Enterprise Linux window, locate the binary DVD version of the ISO image, for example, Red Hat Enterprise Linux 7.7 Binary DVD, and click Download Now.
  6. When the download completes, copy the ISO image to Satellite Server.
  7. On Satellite Server, create a mount point and temporarily mount the ISO image at that location:

    # mkdir /mnt/iso
    # mount -o loop rhel-binary-dvd.iso /mnt/iso
  8. Create Kickstart directories:

    # mkdir --parents \
    /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/
  9. Copy the kickstart files from the ISO image:

    # cp -a /mnt/iso/* /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/
  10. Add the following entries to the listing files:

    To the /var/www/html/pub/sat-import/content/dist/rhel/server/7/listing file, append the version number with a new line. For example, for the RHEL 7.7 ISO, append 7.7.

    To the /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/listing file, append the architecture with a new line. For example, x86_64.

    To the /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/listing file, append kickstart with a new line.

  11. Copy the .treeinfo files from the ISO image:

    # cp /mnt/iso/.treeinfo \
    /var/www/html/pub/sat-import/content/dist/rhel/server/7/7.7/x86_64/kickstart/treeinfo
  12. If you do not plan to use the mounted binary DVD ISO image, unmount and remove the directory:

    # umount /mnt/iso
    # rmdir /mnt/iso
  13. In the Satellite web UI, enable the Kickstart repositories.

3.2.2. Importing Kickstart Repositories for Red Hat Enterprise Linux 8

To import Kickstart repositories for Red Hat Enterprise Linux 8, complete the following steps on Satellite.

Procedure

  1. Navigate to the Red Hat Customer Portal at https://access.redhat.com/ and log in.
  2. In the upper left of the window, click Downloads.
  3. Click Red Hat Enterprise Linux 8.
  4. In the Download Red Hat Enterprise Linux window, locate the binary DVD version of the ISO image, for example, Red Hat Enterprise Linux 8.1 Binary DVD, and click Download Now.
  5. When the download completes, copy the ISO image to Satellite Server.
  6. On Satellite Server, create a mount point and temporarily mount the ISO image at that location:

    # mkdir /mnt/iso
    # mount -o loop rhel-binary-dvd.iso /mnt/iso
  7. Create directories for Red Hat Enterprise Linux 8 AppStream and BaseOS Kickstart repositories:

    # mkdir --parents \
    /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart
    
    # mkdir --parents \
     /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart
  8. Copy the kickstart files from the ISO image:

    # cp -a /mnt/iso/AppStream/* \
    /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart
    
    # cp -a /mnt/iso/BaseOS/* /mnt/iso/images/ \
    /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart

    Note that for BaseOS, you must also copy the contents of the /mnt/iso/images/ directory.

  9. Add the following entries to the listing files:

    To the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/listing file, append kickstart with a new line.

    To the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/listing file, append kickstart with a new line:

    To the /var/www/html/pub/sat-import/content/dist/rhel8/listing file, append the version number with a new line. For example, for the RHEL 8.1 binary ISO, append 8.1.

  10. Copy the .treeinfo files from the ISO image:

    # cp /mnt/iso/.treeinfo \
    /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo
    
    # cp /mnt/iso/.treeinfo \
    /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo
  11. Open the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo file for editing.
  12. In the [general] section, make the following changes:

    • Change packagedir = AppStream/Packages to packagedir = Packages
    • Change repository = AppStream to repository = .
    • Change variant = AppStream to variant = BaseOS
    • Change variants = AppStream,BaseOS to variants = BaseOS
  13. In the [tree] section, change variants = AppStream,BaseOS to variants = BaseOS.
  14. In the [variant-BaseOS] section, make the following changes:

    • Change packages = BaseOS/Packages to packages = Packages
    • Change repository = BaseOS to repository = .
  15. Delete the [media] and [variant-AppStream] sections.
  16. Save and close the file.
  17. Verify that the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/baseos/kickstart/treeinfo file has the following format:

    [checksums]
    images/efiboot.img = sha256:9ad9beee4c906cd05d227a1be7a499c8d2f20b3891c79831325844c845262bb6
    images/install.img = sha256:e246bf4aedfff3bb54ae9012f959597cdab7387aadb3a504f841bdc2c35fe75e
    images/pxeboot/initrd.img = sha256:a66e3c158f02840b19c372136a522177a2ab4bd91cb7269fb5bfdaaf7452efef
    images/pxeboot/vmlinuz = sha256:789028335b64ddad343f61f2abfdc9819ed8e9dfad4df43a2694c0a0ba780d16
    
    [general]
    ; WARNING.0 = This section provides compatibility with pre-productmd treeinfos.
    ; WARNING.1 = Read productmd documentation for details about new format.
    arch = x86_64
    family = Red Hat Enterprise Linux
    name = Red Hat Enterprise Linux 8.1.0
    packagedir = Packages
    platforms = x86_64,xen
    repository = .
    timestamp = 1571146127
    variant = BaseOS
    variants = BaseOS
    version = 8.1.0
    
    [header]
    type = productmd.treeinfo
    version = 1.2
    
    [images-x86_64]
    efiboot.img = images/efiboot.img
    initrd = images/pxeboot/initrd.img
    kernel = images/pxeboot/vmlinuz
    
    [images-xen]
    initrd = images/pxeboot/initrd.img
    kernel = images/pxeboot/vmlinuz
    
    [release]
    name = Red Hat Enterprise Linux
    short = RHEL
    version = 8.1.0
    
    [stage2]
    mainimage = images/install.img
    
    [tree]
    arch = x86_64
    build_timestamp = 1571146127
    platforms = x86_64,xen
    variants = BaseOS
    
    [variant-BaseOS]
    id = BaseOS
    name = BaseOS
    packages = Packages
    repository = .
    type = variant
    uid = BaseOS
  18. Open the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo file for editing.
  19. In the [general] section, make the following changes:

    • Change packagedir = AppStream/Packages to packagedir = Packages
    • Change repository = AppStream to repository = .
    • Change variants = AppStream,BaseOS to variants = AppStream
  20. In the [tree] section, change variants = AppStream,BaseOS to variants = AppStream
  21. In the [variant-AppStream] section, make the following changes:

    • Change packages = AppStream/Packages to packages = Packages
    • Change repository = AppStream to repository = .
  22. Delete the following sections from the file: [checksums], [images-x86_64], [images-xen], [media], [stage2], [variant-BaseOS].
  23. Save and close the file.
  24. Verify that the /var/www/html/pub/sat-import/content/dist/rhel8/8.1/x86_64/appstream/kickstart/treeinfo file has the following format:

    [general]
    ; WARNING.0 = This section provides compatibility with pre-productmd treeinfos.
    ; WARNING.1 = Read productmd documentation for details about new format.
    arch = x86_64
    family = Red Hat Enterprise Linux
    name = Red Hat Enterprise Linux 8.1.0
    packagedir = Packages
    platforms = x86_64,xen
    repository = .
    timestamp = 1571146127
    variant = AppStream
    variants = AppStream
    version = 8.1.0
    
    [header]
    type = productmd.treeinfo
    version = 1.2
    
    [release]
    name = Red Hat Enterprise Linux
    short = RHEL
    version = 8.1.0
    
    [tree]
    arch = x86_64
    build_timestamp = 1571146127
    platforms = x86_64,xen
    variants = AppStream
    
    [variant-AppStream]
    id = AppStream
    name = AppStream
    packages = Packages
    repository = .
    type = variant
    uid = AppStream
  25. If you do not plan to use the mounted binary DVD ISO image, unmount and remove the directory:

    # umount /mnt/iso
    # rmdir /mnt/iso
  26. In the Satellite web UI, enable the Kickstart repositories.

3.3. Enabling the Satellite Tools 6.10 Repository

The Satellite Tools 6.10 repository provides the katello-agent, katello-host-tools, and puppet packages for clients registered to Satellite Server.

To use the CLI instead of the web UI, see the CLI procedure.

Prerequisites

  • Ensure that you import all content ISO images that you require into Satellite Server.

Procedure

  1. In the Satellite web UI, navigate to Content > Red Hat Repositories.
  2. Use the Search field to enter the following repository name: Satellite Tools 6.10 (for RHEL 7 Server) (RPMs).
  3. In the Available Repositories pane, click on Satellite Tools 6.10 (for RHEL 7 Server) (RPMs) to expand the repository set.

    If the Satellite Tools 6.10 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 6.10 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.

CLI procedure

  • Enable the Satellite Tools 6.10 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 6.10 (for RHEL 7 Server) (RPMs)'

3.4. Synchronizing the Satellite Tools 6.10 Repository

Use this section to synchronize the Satellite Tools 6.10 repository from the Red Hat Content Delivery Network (CDN) to your Satellite. This repository provides the katello-agent, katello-host-tools, and puppet packages for clients registered to Satellite Server.

Procedure

  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 Satellite Tools 6.10 (for RHEL 7 Server) RPMs x86_64.
  4. Click Synchronize Now.

CLI procedure

  • Synchronize your Satellite Tools 6.10 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 6.10 for RHEL 7 Server RPMs x86_64' \
    --async

3.5. Enabling Power Management on Managed Hosts

To perform power management tasks on managed hosts using the intelligent platform management interface (IPMI) or a similar protocol, you must enable the baseboard management controller (BMC) module on Satellite Server.

Prerequisites

Procedure

  • To enable BMC, enter the following command:

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

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

To configure the DNS, DHCP, and TFTP services on Satellite Server, use the satellite-installer command with the options appropriate for your environment. To view a complete list of configurable options, enter the satellite-installer --scenario satellite --help command.

Any changes to the settings require entering the satellite-installer command again. You can enter the command multiple times and each time it updates all configuration files with the changed values.

To use external DNS, DHCP, and TFTP services instead, see Chapter 4, Configuring Satellite Server with External Services.

Adding Multihomed DHCP details

If you want to use Multihomed DHCP, you must inform the installer.

Prerequisites

  • Ensure that the following information is available to you:

    • 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.
  • Contact your network administrator to ensure that you have the correct settings.

Procedure

  • Enter the satellite-installer command with the options appropriate for your environment. The following example shows configuring full provisioning services:

    # 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-reverse 2.0.192.in-addr.arpa \
    --foreman-proxy-dhcp true \
    --foreman-proxy-dhcp-managed true \
    --foreman-proxy-dhcp-interface eth0 \
    --foreman-proxy-dhcp-additional-interfaces eth1 \
    --foreman-proxy-dhcp-additional-interfaces eth2 \
    --foreman-proxy-dhcp-range "192.0.2.100 192.0.2.150" \
    --foreman-proxy-dhcp-gateway 192.0.2.1 \
    --foreman-proxy-dhcp-nameservers 192.0.2.2 \
    --foreman-proxy-tftp true \
    --foreman-proxy-tftp-managed true \
    --foreman-proxy-tftp-servername 192.0.2.3

You can monitor the progress of the satellite-installer command displayed in your prompt. You can view the logs in /var/log/foreman-installer/satellite.log. You can view the settings used, including the initial_admin_password parameter, in the /etc/foreman-installer/scenarios.d/satellite-answers.yaml file.

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

3.7. 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

  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.

3.8. 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

  • Some SMTP servers with anti-spam protection or grey-listing features are known to cause problems. To setup outgoing email with such a service either install and configure a vanilla SMTP service on Satellite Server for relay or use the sendmail command instead.

Procedure

  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

      user@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.

3.9. 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 3.9.1, “Creating a Custom SSL Certificate for Satellite Server”
  2. Section 3.9.2, “Deploying a Custom SSL Certificate to Satellite Server”
  3. Section 3.9.3, “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. The same Certificate Authority must sign certificates for Satellite Server and Capsule Server. For more information, see Configuring Capsule Server with a Custom SSL Certificate in Installing Capsule Server.

3.9.1. 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.

When you configure Satellite Server with custom certificates, note the following considerations:

  • You must use the Privacy-Enhanced Mail (PEM) encoding for the SSL certificates.
  • You cannot use the same certificate for both Satellite Server and Capsule Server.
  • The same Certificate Authority must sign certificates for Satellite Server and Capsule Server.

Procedure

  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. This is required to ensure that the katello-certs-check command validates the certificate correctly.
    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.

3.9.2. 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

  1. Validate the custom SSL certificate input files. Note that for the katello-certs-check command to work correctly, Common Name (CN) in the certificate must match the FQDN of Satellite Server.

    # 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 Satellite Server certificate file that is signed by a Certificate Authority.
    2
    Path to the private key that was used to sign 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.

    Example output of katello-certs-check

    Validation succeeded.
    
    To install the Red Hat Satellite Server with the custom certificates, run:
    
      satellite-installer --scenario satellite \
        --certs-server-cert "/root/satellite_cert/satellite_cert.pem" \
        --certs-server-key "/root/satellite_cert/satellite_cert_key.pem" \
        --certs-server-ca-cert "/root/satellite_cert/ca_cert_bundle.pem"
    
    To update the certificates on a currently running Red Hat Satellite installation, run:
    
      satellite-installer --scenario satellite \
        --certs-server-cert "/root/satellite_cert/satellite_cert.pem" \
        --certs-server-key "/root/satellite_cert/satellite_cert_key.pem" \
        --certs-server-ca-cert "/root/satellite_cert/ca_cert_bundle.pem" \
        --certs-update-server --certs-update-server-ca

  2. From the output of the katello-certs-check command, depending on your requirements, enter the satellite-installer command that installs a new Satellite with custom SSL certificates or updates certificates on a currently running Satellite.

    If you are unsure which command to run, you can verify that Satellite is installed by checking if the file /etc/foreman-installer/scenarios.d/.installed exists. If the file exists, run the second satellite-installer command that updates certificates.

    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.

3.9.3. 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, install the katello-ca-consumer package:

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

3.10. Using External Databases with Satellite

As part of the installation process for Red Hat Satellite, the satellite-installer command installs PostgreSQL databases on the same server as Satellite. In certain Satellite deployments, using external databases instead of the default local databases can help with the server load.

Red Hat does not provide support or tools for external database maintenance. This includes backups, upgrades, and database tuning. You must have your own database administrator to support and maintain external databases.

To create and use external databases for Satellite, you must complete the following procedures:

  1. Section 3.10.2, “Preparing a Host for External Databases”. Prepare a Red Hat Enterprise Linux 7 server to host the external databases.
  2. Section 3.10.3, “Installing PostgreSQL”. Prepare PostgreSQL with databases for Satellite, Candlepin and Pulp with dedicated users owning them.
  3. Section 3.10.4, “Configuring Satellite to use External Databases”. Edit the parameters of satellite-installer to point to the new databases, and run satellite-installer.

3.10.1. 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 decide if this option is right for your Satellite configuration. Satellite supports PostgreSQL version 12.1.

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.

3.10.2. Preparing a Host for External Databases

Install a freshly provisioned system with the latest Red Hat Enterprise Linux 7 server to host the external databases.

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 operating system that you want to use for the external databases.

Prerequisites

Procedure

  1. Use the instructions in Attaching the Satellite Infrastructure Subscription to attach a Satellite subscription to your server.
  2. 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 --enable=rhel-7-server-satellite-6.10-rpms

3.10.3. Installing PostgreSQL

You can install only the same version of PostgreSQL that is installed with the satellite-installer tool during an internal database installation. You can install PostgreSQL using Red Hat Enterprise Linux Server 7 repositories or from an external source, as long as the version is supported. Satellite supports PostgreSQL version 12.1.

Procedure

  1. To install PostgreSQL, enter the following command:

    # yum install rh-postgresql12-postgresql-server \
    rh-postgresql12-syspaths \
    rh-postgresql12-postgresql-evr
  2. To initialize PostgreSQL, enter the following command:

    # postgresql-setup initdb
  3. Edit the /var/opt/rh/rh-postgresql12/lib/pgsql/data/postgresql.conf file:

    # vi /var/opt/rh/rh-postgresql12/lib/pgsql/data/postgresql.conf
  4. Remove the # and edit to listen to inbound connections:

    listen_addresses = '*'
  5. Edit the /var/opt/rh/rh-postgresql12/lib/pgsql/data/pg_hba.conf file:

    # vi /var/opt/rh/rh-postgresql12/lib/pgsql/data/pg_hba.conf
  6. Add the following line to the file:

      host  all   all   Satellite_ip/24   md5
  7. To start, and enable PostgreSQL service, enter the following commands:

    # systemctl start postgresql
    # systemctl enable 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 three databases and dedicated roles: one for Satellite, one for Candlepin, and one for Pulp:

    CREATE USER "foreman" WITH PASSWORD 'Foreman_Password';
    CREATE USER "candlepin" WITH PASSWORD 'Candlepin_Password';
    CREATE USER "pulpcore" WITH PASSWORD 'Pulpcore_Password';
    CREATE DATABASE foreman OWNER foreman;
    CREATE DATABASE candlepin OWNER candlepin;
    CREATE DATABASE pulpcore OWNER pulpcore;
  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"
    # PGPASSWORD='Pulpcore_Password' psql -h postgres.example.com -p 5432 -U pulpcore -d pulpcore -c "SELECT 1 as ping"

3.10.4. Configuring Satellite to use External Databases

Use the satellite-installer command to configure Satellite to connect to an external PostgreSQL database.

Prerequisites

  • You have installed and configured a PostgreSQL database on a Red Hat Enterprise Linux server.

Procedure

  1. To configure the external databases 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 \
      --foreman-db-manage false \
      --katello-candlepin-db-host postgres.example.com \
      --katello-candlepin-db-name candlepin \
      --katello-candlepin-db-password Candlepin_Password \
      --katello-candlepin-manage-db false \
      --foreman-proxy-content-pulpcore-manage-postgresql false \
      --foreman-proxy-content-pulpcore-postgresql-host postgres.example.com \
      --foreman-proxy-content-pulpcore-postgresql-db-name pulpcore \
      --foreman-proxy-content-pulpcore-postgresql-password Pulpcore_Password

3.11. 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.

Note that you cannot use tuning profiles on Capsules.

You can 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 /usr/share/foreman-installer/config/foreman.hiera/tuning/sizes directory.

When you run the satellite-installer command with the --tuning option, deployment configuration settings are applied to Satellite in the following order:

  1. The default tuning profile defined in the /usr/share/foreman-installer/config/foreman.hiera/tuning/common.yaml file
  2. The tuning profile that you want to apply to your deployment and is defined in the /usr/share/foreman-installer/config/foreman.hiera/tuning/sizes/ directory
  3. Optional: If you have configured a /etc/foreman-installer/custom-hiera.yaml file, Satellite applies these configuration settings.

Note that the configuration settings that are defined in the /etc/foreman-installer/custom-hiera.yaml file override the configuration settings that are defined in the tuning profiles.

Therefore, before applying a tuning profile, you must compare the configuration settings that are defined in the default tuning profile in /usr/share/foreman-installer/config/foreman.hiera/tuning/common.yaml, the tuning profile that you want to apply and your /etc/foreman-installer/custom-hiera.yaml file, and remove any duplicated configuration from the /etc/foreman-installer/custom-hiera.yaml file.

default

Number of managed hosts: 0-5000

RAM: 20G

Number of CPU cores: 4

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

extra-large

Number of managed hosts: 20001-60000

RAM: 128G

Number of CPU cores: 32

extra-extra-large

Number of managed hosts: 60000+

RAM: 256G

Number of CPU cores: 48+

Procedure

  1. Optional: If you have configured the custom-hiera.yaml file on Satellite Server, back up the /etc/foreman-installer/custom-hiera.yaml file to custom-hiera.original. You can use the backup file to restore the /etc/foreman-installer/custom-hiera.yaml file to its original state if it becomes corrupted:

    # cp /etc/foreman-installer/custom-hiera.yaml \
    /etc/foreman-installer/custom-hiera.original
  2. Optional: If you have configured the custom-hiera.yaml file on Satellite Server, review the definitions of the default tuning profile in /usr/share/foreman-installer/config/foreman.hiera/tuning/common.yaml and the tuning profile that you want to apply in /usr/share/foreman-installer/config/foreman.hiera/tuning/sizes/. Compare the configuration entries against the entries in your /etc/foreman-installer/custom-hiera.yaml file and remove any duplicated configuration settings in your /etc/foreman-installer/custom-hiera.yaml file.
  3. Enter the satellite-installer command with the --tuning option for the profile that you want to apply. For example, to apply the medium tuning profile settings, enter the following command:

    # satellite-installer --tuning medium

Chapter 4. Configuring Satellite Server with External Services

If you do not want to configure the DNS, DHCP, and TFTP services on Satellite Server, use this section to configure your Satellite Server to work with external DNS, DHCP and TFTP services.

4.1. Configuring Satellite Server with External DNS

You can configure Satellite Server with external DNS. Satellite Server uses the nsupdate utility to update DNS records on the remote server.

To make any changes persistent, you must enter the satellite-installer command with the options appropriate for your environment.

Prerequisites

  • You must have a configured external DNS server.

Procedure

  1. Install the bind-utils package:

    # yum install bind bind-utils
  2. Copy the /etc/rndc.key file from the external DNS server to Satellite Server:

    # scp root@dns.example.com:/etc/rndc.key /etc/rndc.key
  3. Configure the ownership, permissions, and SELinux context:

    # restorecon -v /etc/rndc.key
    # chown -v root:named /etc/rndc.key
    # chmod -v 640 /etc/rndc.key
  4. To test the nsupdate utility, add a host remotely:

    # echo -e "server DNS_IP_Address\n \
    update add aaa.virtual.lan 3600 IN A Host_IP_Address\n \
    send\n" | nsupdate -k /etc/rndc.key
    # nslookup aaa.virtual.lan DNS_IP_Address
    # echo -e "server DNS_IP_Address\n \
    update delete aaa.virtual.lan 3600 IN A Host_IP_Address\n \
    send\n" | nsupdate -k /etc/rndc.key
  5. Assign the foreman-proxy user to the named group manually. Normally, satellite-installer ensures that the foreman-proxy user belongs to the named UNIX group, however, in this scenario Satellite does not manage users and groups, therefore you need to assign the foreman-proxy user to the named group manually.

    # usermod -a -G named foreman-proxy
  6. Enter the satellite-installer command to make the following persistent changes to the /etc/foreman-proxy/settings.d/dns.yml file:

    # satellite-installer --foreman-proxy-dns=true \
    --foreman-proxy-dns-managed=false \
    --foreman-proxy-dns-provider=nsupdate \
    --foreman-proxy-dns-server="DNS_IP_Address" \
    --foreman-proxy-keyfile=/etc/rndc.key \
    --foreman-proxy-dns-ttl=86400
  7. Restart the foreman-proxy service:

    # systemctl restart foreman-proxy
  8. Log in to Satellite Server web UI.
  9. Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
  10. Associate the DNS service with the appropriate subnets and domain.

4.2. Configuring Satellite Server with External DHCP

To configure Satellite Server with external DHCP, you must complete the following procedures:

4.2.1. Configuring an External DHCP Server to Use with Satellite Server

To configure an external DHCP server to use with Satellite Server, on a Red Hat Enterprise Linux server, you must install the ISC DHCP Service and Berkeley Internet Name Domain (BIND) packages. You must also share the DHCP configuration and lease files with Satellite Server. The example in this procedure uses the distributed Network File System (NFS) protocol to share the DHCP configuration and lease files.

Note

If you use dnsmasq as an external DHCP server, enable the dhcp-no-override setting. This is required because Satellite creates configuration files on the TFTP server under the grub2/ subdirectory. If the dhcp-no-override setting is disabled, clients fetch the bootloader and its configuration from the root directory, which might cause an error.

Procedure

  1. On a Red Hat Enterprise Linux Server server, install the ISC DHCP Service and Berkeley Internet Name Domain (BIND) packages:

    # yum install dhcp bind
  2. Generate a security token:

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

    As a result, a key pair that consists of two files is created 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. The following is an 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;

    Note that the option routers value is the Satellite or Capsule IP address that you want to use with an external DHCP service.

  5. Delete the two key files from the directory that they were created in.
  6. On Satellite Server, define each subnet. Do not set DHCP Capsule for the defined Subnet yet.

    To prevent conflicts, set up the lease and reservation ranges separately. For example, if the lease range is 192.168.38.10 to 192.168.38.100, in the Satellite web UI define the reservation range as 192.168.38.101 to 192.168.38.250.

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

    # firewall-cmd --add-service dhcp \
    && firewall-cmd --runtime-to-permanent
  8. On Satellite Server, determine the UID and GID of the foreman user:

    # id -u foreman
    993
    # id -g foreman
    990
  9. On the DHCP server, create the foreman user and group with the same IDs as determined in a previous step:

    # groupadd -g 990 foreman
    # useradd -u 993 -g 990 -s /sbin/nologin foreman
  10. To ensure that the configuration files are accessible, 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 lease files using NFS:

    # yum install nfs-utils
    # systemctl enable rpcbind nfs-server
    # systemctl start rpcbind nfs-server nfs-lock nfs-idmapd
  13. Create directories for the DHCP configuration and lease files that you want to export using NFS:

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

    /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)

    Note that the IP address that you enter is the Satellite or Capsule IP address that you want to use with an external DHCP service.

  17. Reload the NFS server:

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

    # firewall-cmd --add-port="7911/tcp" \
    && firewall-cmd --runtime-to-permanent
  19. Optional: Configure the firewall for external access to NFS. Clients are configured using NFSv3.

    # 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

4.2.2. Configuring Satellite Server with an External DHCP Server

You can configure Satellite Server with an external DHCP server.

Prerequisite

Procedure

  1. Install the nfs-utils utility:

    # yum 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 the Remote Procedure Call (RPC) communication paths:

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

    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
    
    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. To verify that the foreman-proxy user can access the files that are shared over the network, display the DHCP configuration and lease 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. Enter the satellite-installer command 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=DHCP_Server_FQDN
  9. Restart the foreman-proxy service:

    # systemctl restart foreman-proxy
  10. Log in to Satellite Server web UI.
  11. Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
  12. Associate the DHCP service with the appropriate subnets and domain.

4.3. Configuring Satellite Server with External TFTP

You can configure Satellite Server with external TFTP services.

Procedure

  1. Create the TFTP directory for NFS:

    # mkdir -p /mnt/nfs/var/lib/tftpboot
  2. In the /etc/fstab file, add the following line:

    TFTP_Server_IP_Address:/exports/var/lib/tftpboot /mnt/nfs/var/lib/tftpboot nfs rw,vers=3,auto,nosharecache,context="system_u:object_r:tftpdir_rw_t:s0" 0 0
  3. Mount the file systems in /etc/fstab:

    # mount -a
  4. Enter the satellite-installer command to make the following persistent changes to the /etc/foreman-proxy/settings.d/tftp.yml file:

    # satellite-installer --foreman-proxy-tftp=true \
    --foreman-proxy-tftp-root /mnt/nfs/var/lib/tftpboot
  5. If the TFTP service is running on a different server than the DHCP service, update the tftp_servername setting with the FQDN or IP address of the server that the TFTP service is running on:

    # satellite-installer --foreman-proxy-tftp-servername=TFTP_Server_FQDN
  6. Log in to Satellite Server web UI.
  7. Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
  8. Associate the TFTP service with the appropriate subnets and domain.

4.4. Configuring Satellite Server with External IdM DNS

When Satellite Server adds a DNS record for a host, it first determines which Capsule is providing DNS for that domain. It then communicates with the Capsule that is configured to provide DNS service for your deployment and adds the record. The hosts are not involved in this process. Therefore, you must 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.

Satellite Server can be configured to use a Red Hat Identity Management (IdM) server to provide DNS service. For more information about Red Hat Identity Management, see the Linux Domain Identity, Authentication, and Policy Guide.

To configure Satellite Server to use a Red Hat Identity Management (IdM) server to provide DNS service, use one of the following procedures:

To revert to internal DNS service, use the following procedure:

Note

You are not required to use Satellite Server to manage DNS. When you are using the realm enrollment feature of Satellite, where provisioned hosts are enrolled automatically to IdM, the ipa-client-install script creates DNS records for the client. Configuring Satellite Server with external IdM DNS and realm enrollment are mutually exclusive. For more information about configuring realm enrollment, see External Authentication for Provisioned Hosts in Administering Red Hat Satellite.

4.4.1. Configuring Dynamic DNS Update with GSS-TSIG Authentication

You can configure the IdM server to use the generic security service algorithm for secret key transaction (GSS-TSIG) technology defined in RFC3645. To configure the IdM server to use the GSS-TSIG technology, you must install the IdM client on the Satellite Server base operating system.

Prerequisites

  • You must ensure the IdM server is deployed and the host-based firewall is configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
  • You must contact the IdM server administrator to ensure that you obtain an account on the IdM server with permissions to create zones on the IdM server.
  • You must confirm whether Satellite Server or Capsule Server is configured to provide DNS service for your deployment.
  • You must configure DNS, DHCP and TFTP services on the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment.
  • You must create a backup of the answer file. You can use the backup to restore the answer file to its original state if it becomes corrupted. For more information, see Configuring Satellite Server.

Procedure

To configure dynamic DNS update with GSS-TSIG authentication, complete the following steps:

Creating a Kerberos Principal on the IdM Server

  1. Obtain a Kerberos ticket for the account obtained from the IdM administrator:

    # kinit idm_user
  2. Create a new Kerberos principal for Satellite Server to use to authenticate on the IdM server.

    # ipa service-add satellite.example.com

Installing and Configuring the IdM Client

  1. On the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment, install the ipa-client package:

    # satellite-maintain packages install ipa-client
  2. Configure the IdM client by running the installation script and following the on-screen prompts:

    # ipa-client-install
  3. Obtain a Kerberos ticket:

    # kinit admin
  4. Remove any preexisting keytab:

    # rm /etc/foreman-proxy/dns.keytab
  5. Obtain the keytab 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. For the dns.keytab file, set the group and owner to foreman-proxy:

    # chown foreman-proxy:foreman-proxy /etc/foreman-proxy/dns.keytab
  7. Optional: To verify that the keytab file is valid, enter the following command:

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

Configuring DNS Zones in the IdM web UI

  1. Create and configure the zone that you want to manage:

    1. Navigate to Network Services > DNS > DNS Zones.
    2. Select Add and enter the zone name. For example, example.com.
    3. Click Add and Edit.
    4. Click the Settings tab and in the BIND update policy box, add the following to the semi-colon separated list:

      grant capsule/047satellite.example.com@EXAMPLE.COM wildcard * ANY;
    5. Set Dynamic update to True.
    6. Enable Allow PTR sync.
    7. Click Save to save the changes.
  2. Create and configure the reverse zone:

    1. Navigate to Network Services > DNS > DNS Zones.
    2. Click 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. Click the Settings tab and in the BIND update policy box, add the following to the semi-colon separated list:

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

Configuring the Satellite or Capsule Server that Manages the DNS Service for the Domain

  1. Use the satellite-installer command to configure the Satellite or Capsule that manages the DNS Service for the domain:

    • On Satellite, enter the following command:

      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 Capsule, enter the following command:

      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
  2. Restart the Satellite or Capsule’s Proxy Service.

    # systemctl restart foreman-proxy

After you run the satellite-installer command to make any changes to your Capsule configuration, you must update the configuration of each affected Capsule in the Satellite web UI.

Updating the Configuration in the Satellite web UI

  1. Navigate to Infrastructure > Capsules, locate the Satellite Server, and from the list in the Actions column, select Refresh.
  2. Configure the domain:

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

    1. Navigate to Infrastructure > Subnets and select the subnet name.
    2. In the Subnet tab, set IPAM to None.
    3. In the Domains tab, select the domain that you want to manage using the IdM server.
    4. In the Capsules tab, ensure Reverse DNS Capsule is set to the Capsule where the subnet is connected.
    5. Click Submit to save the changes.

4.4.2. Configuring Dynamic DNS Update with TSIG Authentication

You can configure an IdM server to use the secret key transaction authentication for DNS (TSIG) technology that uses the rndc.key key file for authentication. The TSIG protocol is defined in RFC2845.

Prerequisites

  • You must ensure the IdM server is deployed and the host-based firewall is configured correctly. For more information, see Port Requirements in the Linux Domain Identity, Authentication, and Policy Guide.
  • You must obtain root user access on the IdM server.
  • You must confirm whether Satellite Server or Capsule Server is configured to provide DNS service for your deployment.
  • You must configure DNS, DHCP and TFTP services on the base operating system of either the Satellite or Capsule that is managing the DNS service for your deployment.
  • You must create a backup of the answer file. You can use the backup to restore the answer file to its original state if it becomes corrupted. For more information, see Configuring Satellite Server.

Procedure

To configure dynamic DNS update with TSIG authentication, complete the following steps:

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:

    ########################################################################
    
    include "/etc/rndc.key";
    controls  {
    inet _IdM_Server_IP_Address_ port 953 allow { _Satellite_IP_Address_; } keys { "rndc-key"; };
    };
    ########################################################################
  2. Reload the named service to make the changes take effect:

    # systemctl reload named
  3. In the IdM web UI, navigate to Network Services > DNS > DNS Zones and click the name of the zone. In the Settings tab, apply the following changes:

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

      grant "rndc-key" zonesub ANY;
    2. Set Dynamic update to True.
    3. Click Update to save the changes.
  4. Copy the /etc/rndc.key file from the IdM server to the base operating system of your Satellite Server. Enter the following command:

    # scp /etc/rndc.key root@satellite.example.com:/etc/rndc.key
  5. To set the correct ownership, permissions, and SELinux context for the rndc.key file, enter the following command:

    # restorecon -v /etc/rndc.key
    # chown -v root:named /etc/rndc.key
    # chmod -v 640 /etc/rndc.key
  6. Assign the foreman-proxy user to the named group manually. Normally, satellite-installer ensures that the foreman-proxy user belongs to the named UNIX group, however, in this scenario Satellite does not manage users and groups, therefore you need to assign the foreman-proxy user to the named group manually.

    # usermod -a -G named foreman-proxy
  7. On Satellite Server, enter the following satellite-installer command to configure Satellite 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="IdM_Server_IP_Address" \
    --foreman-proxy-keyfile=/etc/rndc.key \
    --foreman-proxy-dns-ttl=86400

Testing External Updates to the DNS Zone in the IdM Server

  1. Install the bind-utils utility:

    # yum install bind-utils
  2. Ensure that the key in the /etc/rndc.key file on Satellite Server is the same key file that is 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, navigate to Network Services > DNS > DNS Zones. Click 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.

4.4.3. Reverting to Internal DNS Service

You can revert to using Satellite Server and Capsule Server as your DNS providers. You can use a backup of the answer file that was created before configuring external DNS, or you can create a backup of the answer file. For more information about answer files, see Configuring Satellite Server.

Procedure

On the Satellite or Capsule Server that you want to configure to manage DNS service for the domain, complete the following steps:

Configuring Satellite or Capsule as a DNS Server

  • If you have created a backup of the answer file before configuring external DNS, restore the answer file and then enter the satellite-installer command:

    # satellite-installer
  • If you do not have a suitable backup of the answer file, create a backup of the answer file now. To configure Satellite or Capsule as DNS server without using an answer file, enter the following satellite-installer command on Satellite and each affected Capsule:

    # 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

    For more information,see Configuring DNS, DHCP, and TFTP on Capsule Server.

After you run the satellite-installer command to make any changes to your Capsule configuration, you must update the configuration of each affected Capsule in the Satellite web UI.

Updating the Configuration in the Satellite web UI

  1. Navigate to Infrastructure > Capsules.
  2. For each Capsule that you want to update, from the Actions list, select Refresh.
  3. Configure the domain:

    1. Navigate to Infrastructure > Domains and click the domain name that you want to configure.
    2. In the Domain tab, set DNS Capsule to the Capsule where the subnet is connected.
  4. Configure the subnet:

    1. Navigate to Infrastructure > Subnets and select the subnet name.
    2. In the Subnet tab, set IPAM to DHCP or Internal DB.
    3. In the Domains tab, select the domain that you want to manage using Satellite or Capsule.
    4. In the Capsules tab, set Reverse DNS Capsule to the Capsule where the subnet is connected.
    5. Click Submit to save the changes.

Appendix A. 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 Restoring Manual Changes Overwritten by a Puppet Run.

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

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.

Appendix B. Restoring 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.

Procedure

  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.

Appendix C. Reverting Satellite to Download Content from Red Hat CDN

If your environment changes from disconnected to connected, you can reconfigure a disconnected Satellite to download content directly from the Red Hat CDN.

Procedure

  1. In the Satellite web UI, navigate to Content > Subscriptions.
  2. Click Manage Manifest.
  3. Edit the Red Hat CDN URL field to point to the Red Hat CDN URL:

    https://cdn.redhat.com

  4. Click Save.

Satellite Server is now configured to download content from the CDN the next time that it synchronizes repositories.

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