Language:
Format:

Red Hat Training

A Red Hat training course is available for Red Hat OpenStack Platform

Chapter 7. Isolating Networks

The director provides methods to configure isolated Overcloud networks. This means the Overcloud environment separates network traffic types into different networks, which in turn assigns network traffic to specific network interfaces or bonds. After configuring isolated networks, the director configures the OpenStack services to use the isolated networks. If no isolated networks are configured, all services run on the Provisioning network.

This example uses separate networks for all services:

NIC1 (Provisioning):
- Provisioning (also known as Control Plane)
NIC2 (Control Group)
- Internal API
- Storage Management
- External (Public API)
NIC3 (Data Group)
- Tenant Network (VXLAN tunneling)
- Tenant VLANs / Provider VLANs
- Storage
- External VLANs (Floating IP/SNAT)
NIC4 (Management)
- Management

In this example, each Overcloud node uses two network interfaces in a bond to serve networks in tagged VLANs. The following network assignments apply to this bond:

Table 7.1. Network Subnet and VLAN Assignments

Network Type	Subnet	VLAN	NIC/Group
Internal API	172.16.0.0/24	201	NIC2 (control)
Tenant	172.17.0.0/24	202	NIC3 (data)
Storage	172.18.0.0/24	203	NIC3 (data)
Storage Management	172.19.0.0/24	204	NIC2 (control)
Management	172.20.0.0/24	205	NIC4 (management)
External / Floating IP	10.1.1.0/24	100	NIC2 (control) NIC3 (data)

7.1. Creating Custom Interface Templates

The Overcloud network configuration requires a set of the network interface templates. You customize these templates to configure the node interfaces on a per role basis. These templates are standard Heat templates in YAML format (see Section 2.1, “Heat Templates”). The director contains a set of example templates to get you started:

/usr/share/openstack-tripleo-heat-templates/network/config/single-nic-vlans - Directory containing templates for single NIC with VLANs configuration on a per role basis.
/usr/share/openstack-tripleo-heat-templates/network/config/bond-with-vlans - Directory containing templates for bonded NIC configuration on a per role basis.
/usr/share/openstack-tripleo-heat-templates/network/config/multiple-nics - Directory containing templates for multiple NIC configuration using one NIC per role.
/usr/share/openstack-tripleo-heat-templates/network/config/single-nic-linux-bridge-vlans - Directory containing templates for single NIC with VLANs configuration on a per role basis and using a Linux bridge instead of an Open vSwitch bridge.

Note

These examples only contain templates for the default roles. To define the network interface configuration for a custom role, use these templates as a basis.

For this example, use the default multiple NICs example configuration as a basis. Copy the version located at /usr/share/openstack-tripleo-heat-templates/network/config/multiple-nics.

$ cp -r /usr/share/openstack-tripleo-heat-templates/network/config/multiple-nics ~/templates/nic-configs

The command will create a local set of Heat templates that define a network interface configuration with multiple NICs for each role. Each template contains the standard parameters, resources, and output sections.

Parameters

The parameters section contains all network configuration parameters for network interfaces. This includes information such as subnet ranges and VLAN IDs. This section should remain unchanged as the Heat template inherits values from its parent template. However, you can modify the values for some parameters using environment files.

Parameter	Description	Type
`ControlPlaneIp`	The node’s IP address and subnet on the Control Plane/Provisioning network	string
`ExternalIpSubnet`	The node’s IP address and subnet on the External network	string
`InternalApiIpSubnet`	The node’s IP address and subnet on the Internal API network	string
`StorageIpSubnet`	The node’s IP address and subnet on the Storage network	string
`StorageMgmtIpSubnet`	The node’s IP address and subnet on the Storage Management network	string
`TenantIpSubnet`	The node’s IP address and subnet on the Tenant network	string
`ManagementIpSubnet`	The node’s IP address and subnet on the Management network. Only populated when including `environments/network-management.yaml`.	string
`ExternalNetworkVlanID`	The node’s VLAN ID for External network traffic.	number
`InternalApiNetworkVlanID`	The node’s VLAN ID for Internal API network traffic.	number
`StorageNetworkVlanID`	The node’s VLAN ID for Storage network traffic.	number
`StorageMgmtNetworkVlanID`	The node’s VLAN ID for Storage Management network traffic.	number
`TenantNetworkVlanID`	The node’s VLAN ID for Tenant network traffic.	number
`ManagementNetworkVlanID`	The node’s VLAN ID for Management network traffic.	number
`ControlPlaneDefaultRoute`	The default route of the Control Plane/Provisioning network. Override this in the `parameter_defaults` section of an environment file.	string
`ExternalInterfaceDefaultRoute`	The default route for the External network.	string
`ManagementInterfaceDefaultRoute`	The default route of the Management network.	string
`ControlPlaneSubnetCidr`	The subnet CIDR of the Control Plane/Provisioning network. Override this in the `parameter_defaults` section of an environment file.	string
`DnsServers`	A list of DNS servers added to resolv.conf. Usually allows a maximum of 2 servers. Override this in the `parameter_defaults` section of an environment file.	comma delimited list
`EC2MetadataIp`	The IP address of the EC2 metadata server. Override this in the `parameter_defaults` section of an environment file.	string

Resources

The resources section is where the main network interface configuration occurs. In most cases, the resources section is the only one that requires editing. Each resources section begins with the following header:

resources:
  OsNetConfigImpl:
    type: OS::Heat::SoftwareConfig
    properties:
      group: script
      config:
        str_replace:
          template:
            get_file: ../../scripts/run-os-net-config.sh
          params:
            $network_config:
              network_config:

This runs a script (run-os-net-config.sh) that creates a configuration file for os-net-config to use for configuring network properties on a node. The network_config section contains the custom network interface data sent to the run-os-net-config.sh script. You arrange this custom interface data in a sequence based on the type of device, which includes the following:

interface

Defines a single network interface. The configuration defines each interface using either the actual interface name ("eth0", "eth1", "enp0s25") or a set of numbered interfaces ("nic1", "nic2", "nic3").

          - type: interface
            name: nic2

vlan

Defines a VLAN. Use the VLAN ID and subnet passed from the parameters section.

          - type: vlan
            vlan_id:{get_param: ExternalNetworkVlanID}
            addresses:
              - ip_netmask: {get_param: ExternalIpSubnet}

ovs_bond

Defines a bond in Open vSwitch to join two or more interfaces together. This helps with redundancy and increases bandwidth.

          - type: ovs_bond
            name: bond1
            members:
            - type: interface
              name: nic2
            - type: interface
              name: nic3

ovs_bridge

Defines a bridge in Open vSwitch, which connects multiple interface, ovs_bond, and vlan objects together. The external bridge also uses two special values for parameters:

bridge_name, which is replaced with the external bridge name.

interface_name, which is replaced with the external interface.

          - type: ovs_bridge
            name: bridge_name
            addresses:
            - ip_netmask:
                list_join:
                - /
                - - {get_param: ControlPlaneIp}
                  - {get_param: ControlPlaneSubnetCidr}
            members:
              - type: interface
                name: interface_name
          - type: vlan
            device: bridge_name
            vlan_id:
              {get_param: ExternalNetworkVlanID}
            addresses:
              - ip_netmask:
                  {get_param: ExternalIpSubnet}

Note

The OVS bridge connects to the Neutron server in order to get configuration data. If the OpenStack control traffic (typically the Control Plane and Internal API networks) is placed on an OVS bridge, then connectivity to the Neutron server gets lost whenever OVS is upgraded or the OVS bridge is restarted by the admin user or process. This will cause some downtime. If downtime is not acceptable under these circumstances, then the Control group networks should be placed on a separate interface or bond rather than on an OVS bridge:

A minimal setting can be achieved, when you put the Internal API network on a VLAN on the provisioning interface and the OVS bridge on a second interface.
If you want bonding, you need at least two bonds (four network interfaces). The control group should be placed on a Linux bond (Linux bridge). If the switch does not support LACP fallback to a single interface for PXE boot, then this solution requires at least five NICs.

linux_bond

Defines a Linux bond that joins two or more interfaces together. This helps with redundancy and increases bandwidth. Make sure to include the kernel-based bonding options in the bonding_options parameter. For more information on Linux bonding options, see 4.5.1. Bonding Module Directives in the Red Hat Enterprise Linux 7 Networking Guide.

            - type: linux_bond
              name: bond1
              members:
              - type: interface
                name: nic2
              - type: interface
                name: nic3
              bonding_options: "mode=802.3ad"

linux_bridge

Defines a Linux bridge, which connects multiple interface, linux_bond, and vlan objects together. The external bridge also uses two special values for parameters:

bridge_name, which is replaced with the external bridge name.

interface_name, which is replaced with the external interface.

            - type: linux_bridge
              name: bridge_name
              addresses:
                - ip_netmask:
                    list_join:
                      - /
                      - - {get_param: ControlPlaneIp}
                        - {get_param: ControlPlaneSubnetCidr}
              members:
                - type: interface
                  name: interface_name
            - type: vlan
              device: bridge_name
              vlan_id:
                {get_param: ExternalNetworkVlanID}
              addresses:
                - ip_netmask:
                    {get_param: ExternalIpSubnet}

See Chapter 17, Network Interface Parameters for a full list of parameters for each of these items.

The following settings are based on default controller template from the /home/stack/templates/nic-configs/controller.yaml file. The networks (network-config) were configured according to the previous recommendations to keep the control group apart from the OVS bridge:

resources:
  OsNetConfigImpl:
    type: OS::Heat::SoftwareConfig
    properties:
      group: script
      config:
        str_replace:
          template:
            get_file: ../../scripts/run-os-net-config.sh
          params:
            $network_config:
              network_config:

              # NIC 1 - Provisioning
              - type: interface
                name: nic1
                use_dhcp: false
                addresses:
                - ip_netmask:
                    list_join:
                    - /
                    - - get_param: ControlPlaneIp
                      - get_param: ControlPlaneSubnetCidr
                routes:
                - ip_netmask: 169.254.169.254/32
                  next_hop:
                    get_param: EC2MetadataIp

              # NIC 2 - Control Group
              - type: interface
                name: nic2
                use_dhcp: false
              - type: vlan
                device: nic2
                vlan_id:
                  get_param: InternalApiNetworkVlanID
                addresses:
                - ip_netmask:
                    get_param: InternalApiIpSubnet
              - type: vlan
                device: nic2
                vlan_id:
                  get_param: StorageMgmtNetworkVlanID
                addresses:
                - ip_netmask:
                    get_param: StorageMgmtIpSubnet
              - type: vlan
                device: nic2
                vlan_id:
                  get_param: ExternalNetworkVlanID
                addresses:
                - ip_netmask:
                    get_param: ExternalIpSubnet
                routes:
                - default: true
                  next_hop:
                    get_param: ExternalInterfaceDefaultRoute

              # NIC 3 - Data Group
              - type: ovs_bridge
                name: bridge_name
                dns_servers:
                  get_param: DnsServers
                members:
                - type: interface
                  name: nic3
                  primary: true
                - type: vlan
                  device: nic3
                  vlan_id:
                    get_param: StorageNetworkVlanID
                  addresses:
                  - ip_netmask:
                      get_param: StorageIpSubnet
                - type: vlan
                  device: nic3
                  vlan_id:
                    get_param: TenantNetworkVlanID
                  addresses:
                  - ip_netmask:
                      get_param: TenantIpSubnet

                # NIC 4 - Management
                - type: interface
                  name: nic4
                  use_dhcp: false
                  addresses:
                  - ip_netmask: {get_param: ManagementIpSubnet}
                  routes:
                  - default: true
                    next_hop: {get_param: ManagementInterfaceDefaultRoute}

Note

The Management network section is commented in the network interface Heat templates. Uncomment this section to enable the Management network.

This template uses four network interfaces and assigns a number of tagged VLAN devices to the numbered interfaces, nic1 to nic4. On nic3 it creates the OVS bridge that hosts the Storage and Tenant networks.

For more examples of network interface templates, see Appendix B, Network Interface Template Examples.

Important

Unused interfaces can cause unwanted default routes and network loops. For example, your template might contain a network interface (nic4) that does not use any IP assignments for OpenStack services but still uses DHCP and/or a default route. To avoid network conflicts, remove any unused interfaces from ovs_bridge devices and disable the DHCP and default route settings:

- type: interface
  name: nic4
  use_dhcp: false
  defroute: false

7.2. Creating a Network Environment File

The network environment file is a Heat environment file that describes the Overcloud’s network environment and points to the network interface configuration templates from the previous section. You can define the subnets and VLANs for your network along with IP address ranges. You can then customize these values for the local environment.

The director contains a set of example environment files to get you started. Each environment file corresponds to the example network interface files in /usr/share/openstack-tripleo-heat-templates/network/config/:

/usr/share/openstack-tripleo-heat-templates/environments/net-single-nic-with-vlans.yaml - Example environment file for single NIC with VLANs configuration in the single-nic-vlans) network interface directory. Environment files for disabling the External network (net-single-nic-with-vlans-no-external.yaml) or enabling IPv6 (net-single-nic-with-vlans-v6.yaml) are also available.
/usr/share/openstack-tripleo-heat-templates/environments/net-bond-with-vlans.yaml - Example environment file for bonded NIC configuration in the bond-with-vlans network interface directory. Environment files for disabling the External network (net-bond-with-vlans-no-external.yaml) or enabling IPv6 (net-bond-with-vlans-v6.yaml) are also available.
/usr/share/openstack-tripleo-heat-templates/environments/net-multiple-nics.yaml - Example environment file for a multiple NIC configuration in the multiple-nics network interface directory. An environment file for enabling IPv6 (net-multiple-nics-v6.yaml) is also available.
/usr/share/openstack-tripleo-heat-templates/environments/net-single-nic-linux-bridge-with-vlans.yaml - Example environment file for single NIC with VLANs configuration using a Linux bridge instead of an Open vSwitch bridge, which uses the the single-nic-linux-bridge-vlans network interface directory.

This scenario uses a modified version of the /usr/share/openstack-tripleo-heat-templates/environments/net-multiple-nics.yaml file. Copy this file to the stack user’s templates directory.

$ cp /usr/share/openstack-tripleo-heat-templates/environments/net-multiple-nics.yaml /home/stack/templates/network-environment.yaml

The environment file contains the following modified sections:

resource_registry:
  OS::TripleO::BlockStorage::Net::SoftwareConfig: /home/stack/templates/nic-configs/cinder-storage.yaml
  OS::TripleO::Compute::Net::SoftwareConfig: /home/stack/templates/nic-configs/compute.yaml
  OS::TripleO::Controller::Net::SoftwareConfig: /home/stack/templates/nic-configs/controller.yaml
  OS::TripleO::ObjectStorage::Net::SoftwareConfig: /home/stack/templates/nic-configs/swift-storage.yaml
  OS::TripleO::CephStorage::Net::SoftwareConfig: /home/stack/templates/nic-configs/ceph-storage.yaml

parameter_defaults:
  InternalApiNetCidr: 172.16.0.0/24
  TenantNetCidr: 172.17.0.0/24
  StorageNetCidr: 172.18.0.0/24
  StorageMgmtNetCidr: 172.19.0.0/24
  ManagementNetCidr: 172.20.0.0/24
  ExternalNetCidr: 10.1.1.0/24
  InternalApiAllocationPools: [{'start': '172.16.0.10', 'end': '172.16.0.200'}]
  TenantAllocationPools: [{'start': '172.17.0.10', 'end': '172.17.0.200'}]
  StorageAllocationPools: [{'start': '172.18.0.10', 'end': '172.18.0.200'}]
  StorageMgmtAllocationPools: [{'start': '172.19.0.10', 'end': '172.19.0.200'}]
  ManagementAllocationPools: [{'start': '172.20.0.10', 'end': '172.20.0.200'}]
  # Leave room for floating IPs in the External allocation pool
  ExternalAllocationPools: [{'start': '10.1.1.10', 'end': '10.1.1.50'}]
  # Set to the router gateway on the external network
  ExternalInterfaceDefaultRoute: 10.1.1.1
  # Gateway router for the provisioning network (or Undercloud IP)
  ControlPlaneDefaultRoute: 192.0.2.254
  # The IP address of the EC2 metadata server. Generally the IP of the Undercloud
  EC2MetadataIp: 192.0.2.1
  # Define the DNS servers (maximum 2) for the overcloud nodes
  DnsServers: ["8.8.8.8","8.8.4.4"]
  InternalApiNetworkVlanID: 201
  StorageNetworkVlanID: 202
  StorageMgmtNetworkVlanID: 203
  TenantNetworkVlanID: 204
  ManagementNetworkVlanID: 205
  ExternalNetworkVlanID: 100
  NeutronExternalNetworkBridge: "''"

The resource_registry section contains modified links to the custom network interface templates for each node role. Also include links to network interface template for custom roles in this section using the following format:

OS::TripleO::[ROLE]::Net::SoftwareConfig: [FILE]

Replace [ROLE] with the role name and [FILE] with the network interface template location.

The parameter_defaults section contains a list of parameters that define the network options for each network type. For a full reference of these options, see Appendix A, Network Environment Options.

This scenario defines options for each network. All network types use an individual VLAN and subnet used for assigning IP addresses to hosts and virtual IPs. In the example above, the allocation pool for the Internal API network starts at 172.16.0.10 and continues to 172.16.0.200 using VLAN 201. This results in static and virtual IPs assigned starting at 172.16.0.10 and upwards to 172.16.0.200 while using VLAN 201 in your environment.

The External network hosts the Horizon dashboard and Public API. If using the External network for both cloud administration and floating IPs, make sure there is room for a pool of IPs to use as floating IPs for VM instances. In this example, you only have IPs from 10.1.1.10 to 10.1.1.50 assigned to the External network, which leaves IP addresses from 10.1.1.51 and above free to use for Floating IP addresses. Alternately, place the Floating IP network on a separate VLAN and configure the Overcloud after creation to use it.

If using bonded OVS interfaces, you can configure additional options with BondInterfaceOvsOptions. See Appendix C, Open vSwitch Bonding Options for more information.

Important

Changing the network configuration after creating the Overcloud can cause configuration problems due to the availability of resources. For example, if a user changes a subnet range for a network in the network isolation templates, the reconfiguration might fail due to the subnet already being in use.

7.3. Assigning OpenStack Services to Isolated Networks

Each OpenStack service is assigned to a default network type in the resource registry. These services are then bound to IP addresses within the network type’s assigned network. Although the OpenStack services are divided among these networks, the number of actual physical networks might differ as defined in the network environment file. You can reassign OpenStack services to different network types by defining a new network map in your network environment file (/home/stack/templates/network-environment.yaml). The ServiceNetMap parameter determines the network types used for each service.

For example, you can reassign the Storage Management network services to the Storage Network by modifying the highlighted sections:

parameter_defaults:
  ServiceNetMap:
    SwiftMgmtNetwork: storage # Changed from storage_mgmt
    CephClusterNetwork: storage # Changed from storage_mgmt

Changing these parameters to storage places these services on the Storage network instead of the Storage Management network. This means you only need to define a set of parameter_defaults for the Storage network and not the Storage Management network.

The director merges your custom ServiceNetMap parameter definitions into a pre-defined list of defaults taken from ServiceNetMapDefaults and overrides the defaults. The director then returns the full list including customizations back to ServiceNetMap, which is used to configure network assignments for various services.

Note

A full list of default services can be found in the ServiceNetMapDefaults parameter within /usr/share/openstack-tripleo-heat-templates/network/service_net_map.j2.yaml.

7.4. Selecting Networks to Deploy

The settings in the resource_registry section of the environment file for networks and ports do not ordinarily need to be changed. The list of networks can be changed if only a subset of the networks are desired.

Note

When specifying custom networks and ports, do not include the environments/network-isolation.yaml on the deployment command line. Instead, specify all the networks and ports in the network environment file.

In order to use isolated networks, the servers must have IP addresses on each network. You can use neutron in the Undercloud to manage IP addresses on the isolated networks, so you will need to enable neutron port creation for each network. You can override the resource registry in your environment file.

First, this is the complete set of the default networks and ports per role that can be deployed:

resource_registry:
  # This section is usually not modified, if in doubt stick to the defaults
  # TripleO overcloud networks
  OS::TripleO::Network::External: /usr/share/openstack-tripleo-heat-templates/network/external.yaml
  OS::TripleO::Network::InternalApi: /usr/share/openstack-tripleo-heat-templates/network/internal_api.yaml
  OS::TripleO::Network::StorageMgmt: /usr/share/openstack-tripleo-heat-templates/network/storage_mgmt.yaml
  OS::TripleO::Network::Storage: /usr/share/openstack-tripleo-heat-templates/network/storage.yaml
  OS::TripleO::Network::Tenant: /usr/share/openstack-tripleo-heat-templates/network/tenant.yaml
  OS::TripleO::Network::Management: /usr/share/openstack-tripleo-heat-templates/network/management.yaml

  # Port assignments for the VIPs
  OS::TripleO::Network::Ports::ExternalVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/external.yaml
  OS::TripleO::Network::Ports::InternalApiVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Network::Ports::StorageVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Network::Ports::StorageMgmtVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
  OS::TripleO::Network::Ports::TenantVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml
  OS::TripleO::Network::Ports::ManagementVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml
  OS::TripleO::Network::Ports::RedisVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/vip.yaml

  # Port assignments for the controller role
  OS::TripleO::Controller::Ports::ExternalPort: /usr/share/openstack-tripleo-heat-templates/network/ports/external.yaml
  OS::TripleO::Controller::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Controller::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Controller::Ports::StorageMgmtPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
  OS::TripleO::Controller::Ports::TenantPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml
  OS::TripleO::Controller::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

  # Port assignments for the compute role
  OS::TripleO::Compute::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Compute::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Compute::Ports::TenantPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml
  OS::TripleO::Compute::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

  # Port assignments for the ceph storage role
  OS::TripleO::CephStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::CephStorage::Ports::StorageMgmtPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
  OS::TripleO::CephStorage::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

  # Port assignments for the swift storage role
  OS::TripleO::SwiftStorage::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::SwiftStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::SwiftStorage::Ports::StorageMgmtPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
  OS::TripleO::SwiftStorage::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

  # Port assignments for the block storage role
  OS::TripleO::BlockStorage::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::BlockStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::BlockStorage::Ports::StorageMgmtPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
  OS::TripleO::BlockStorage::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

The first section of this file has the resource registry declaration for the OS::TripleO::Network::* resources. By default these resources use the OS::Heat::None resource type, which does not create any networks. By redirecting these resources to the YAML files for each network, you enable the creation of these networks.

The next several sections create the IP addresses for the nodes in each role. The controller nodes have IPs on each network. The compute and storage nodes each have IPs on a subset of the networks.

The default file only contains the port assignments for the default roles. To configure port assignments for a custom role, use the same convention as the other resource definitions and link to the appropriate Heat templates in the network/ports directory:

OS::TripleO::[ROLE]::Ports::ExternalPort: /usr/share/openstack-tripleo-heat-templates/network/ports/external.yaml
OS::TripleO::[ROLE]::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
OS::TripleO::[ROLE]::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
OS::TripleO::[ROLE]::Ports::StorageMgmtPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage_mgmt.yaml
OS::TripleO::[ROLE]::Ports::TenantPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml
OS::TripleO::[ROLE]::Ports::ManagementPort: /usr/share/openstack-tripleo-heat-templates/network/ports/management.yaml

Replace [ROLE] with the name of your role.

To deploy without one of the pre-configured networks, disable the network definition and the corresponding port definition for the role. For example, all references to storage_mgmt.yaml could be replaced with OS::Heat::None:

resource_registry:
  # This section is usually not modified, if in doubt stick to the defaults
  # TripleO overcloud networks
  OS::TripleO::Network::External: /usr/share/openstack-tripleo-heat-templates/network/external.yaml
  OS::TripleO::Network::InternalApi: /usr/share/openstack-tripleo-heat-templates/network/internal_api.yaml
  OS::TripleO::Network::StorageMgmt: OS::Heat::None
  OS::TripleO::Network::Storage: /usr/share/openstack-tripleo-heat-templates/network/storage.yaml
  OS::TripleO::Network::Tenant: /usr/share/openstack-tripleo-heat-templates/network/tenant.yaml

  # Port assignments for the VIPs
  OS::TripleO::Network::Ports::ExternalVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/external.yaml
  OS::TripleO::Network::Ports::InternalApiVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Network::Ports::StorageVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Network::Ports::StorageMgmtVipPort: OS::Heat::None
  OS::TripleO::Network::Ports::TenantVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml
  OS::TripleO::Network::Ports::RedisVipPort: /usr/share/openstack-tripleo-heat-templates/network/ports/vip.yaml

  # Port assignments for the controller role
  OS::TripleO::Controller::Ports::ExternalPort: /usr/share/openstack-tripleo-heat-templates/network/ports/external.yaml
  OS::TripleO::Controller::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Controller::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Controller::Ports::StorageMgmtPort: OS::Heat::None
  OS::TripleO::Controller::Ports::TenantPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml

  # Port assignments for the compute role
  OS::TripleO::Compute::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::Compute::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::Compute::Ports::TenantPort: /usr/share/openstack-tripleo-heat-templates/network/ports/tenant.yaml

  # Port assignments for the ceph storage role
  OS::TripleO::CephStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::CephStorage::Ports::StorageMgmtPort: OS::Heat::None

  # Port assignments for the swift storage role
  OS::TripleO::SwiftStorage::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::SwiftStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::SwiftStorage::Ports::StorageMgmtPort: OS::Heat::None

  # Port assignments for the block storage role
  OS::TripleO::BlockStorage::Ports::InternalApiPort: /usr/share/openstack-tripleo-heat-templates/network/ports/internal_api.yaml
  OS::TripleO::BlockStorage::Ports::StoragePort: /usr/share/openstack-tripleo-heat-templates/network/ports/storage.yaml
  OS::TripleO::BlockStorage::Ports::StorageMgmtPort: OS::Heat::None

parameter_defaults:
  ServiceNetMap:
    ApacheNetwork: internal_api
    NeutronTenantNetwork: tenant
    CeilometerApiNetwork: internal_api
    ContrailAnalyticsNetwork: internal_api
    ContrailAnalyticsDatabaseNetwork: internal_api
    ContrailConfigNetwork: internal_api
    ContrailControlNetwork: internal_api
    ContrailDatabaseNetwork: internal_api
    ContrailWebuiNetwork: internal_api
    ContrailTsnNetwork: internal_api
    AodhApiNetwork: internal_api
    PankoApiNetwork: internal_api
    BarbicanApiNetwork: internal_api
    GnocchiApiNetwork: internal_api
    MongodbNetwork: internal_api
    CinderApiNetwork: internal_api
    CinderIscsiNetwork: storage
    CongressApiNetwork: internal_api
    GlanceApiNetwork: internal_api
    IronicApiNetwork: ctlplane
    IronicNetwork: ctlplane
    KeystoneAdminApiNetwork: ctlplane # allows undercloud to config endpoints
    KeystonePublicApiNetwork: internal_api
    ManilaApiNetwork: internal_api
    NeutronApiNetwork: internal_api
    OctaviaApiNetwork: internal_api
    HeatApiNetwork: internal_api
    HeatApiCfnNetwork: internal_api
    HeatApiCloudwatchNetwork: internal_api
    NovaApiNetwork: internal_api
    NovaColdMigrationNetwork: ctlplane
    NovaPlacementNetwork: internal_api
    NovaMetadataNetwork: internal_api
    NovaVncProxyNetwork: internal_api
    NovaLibvirtNetwork: internal_api
    Ec2ApiNetwork: internal_api
    Ec2ApiMetadataNetwork: internal_api
    TackerApiNetwork: internal_api
    SwiftStorageNetwork: storage # Changed from storage_mgmt
    SwiftProxyNetwork: storage
    SaharaApiNetwork: internal_api
    HorizonNetwork: internal_api
    MemcachedNetwork: internal_api
    RabbitmqNetwork: internal_api
    RedisNetwork: internal_api
    MysqlNetwork: internal_api
    CephClusterNetwork: storage # Changed from storage_mgmt
    CephMonNetwork: storage
    CephRgwNetwork: storage
    PublicNetwork: external
    OpendaylightApiNetwork: internal_api
    OvnDbsNetwork: internal_api
    MistralApiNetwork: internal_api
    ZaqarApiNetwork: internal_api
    PacemakerRemoteNetwork: internal_api
    EtcdNetwork: internal_api
    CephStorageHostnameResolveNetwork: storage
    ControllerHostnameResolveNetwork: internal_api
    ComputeHostnameResolveNetwork: internal_api
    ObjectStorageHostnameResolveNetwork: internal_api
    BlockStorageHostnameResolveNetwork: internal_api

By using OS::Heat::None, no network or ports are created, so the services on the Storage Management network would default to the Provisioning network. This can be changed in the ServiceNetMap in order to move the Storage Management services to another network, such as the Storage network.

Select Your Language

Red Hat Training

Chapter 7. Isolating Networks

7.1. Creating Custom Interface Templates

7.2. Creating a Network Environment File

7.3. Assigning OpenStack Services to Isolated Networks

7.4. Selecting Networks to Deploy

Quick Links

Help

Site Info

Related Sites

About

Red Hat legal and privacy links

Red Hat legal and privacy links

Language and Page Formatting Options

Red Hat Training

Chapter 7. Isolating Networks

7.1. Creating Custom Interface Templates

7.2. Creating a Network Environment File

7.3. Assigning OpenStack Services to Isolated Networks

7.4. Selecting Networks to Deploy

Quick Links

Help

Site Info

Related Sites

Systems Status

About

Red Hat legal and privacy links

Red Hat legal and privacy links