nova: add support for a dedicated migration network

Two new parameters (migration_interface, migration_interface_address) to make
the use of a dedicated migration network possible.

Change-Id: I723c9bea9cf1881e02ba39d5318c090960c22c47

ansible/group_vars/all.yml

@@ -163,10 +163,12 @@ kolla_external_vip_interface: "{{ network_interface }}"
 api_interface: "{{ network_interface }}"
 storage_interface: "{{ network_interface }}"
 cluster_interface: "{{ network_interface }}"
+migration_interface: "{{ network_interface }}"
 tunnel_interface: "{{ network_interface }}"
 octavia_network_interface: "{{ api_interface }}"
 bifrost_network_interface: "{{ network_interface }}"
 dns_interface: "{{ network_interface }}"
+migration_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + migration_interface]['ipv4']['address'] }}"
 tunnel_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + tunnel_interface]['ipv4']['address'] }}"
 octavia_network_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + octavia_network_interface]['ipv4']['address'] }}"
 

ansible/roles/nova/tasks/precheck.yml

@@ -95,7 +95,7 @@
   vars:
     nova_ssh: "{{ nova_services['nova-ssh'] }}"
   wait_for:
-    host: "{{ api_interface_address }}"
+    host: "{{ migration_interface_address }}"
     port: "{{ nova_ssh_port }}"
     connect_timeout: 1
     timeout: 1

ansible/roles/nova/templates/libvirtd.conf.j2

@@ -4,5 +4,5 @@ auth_tcp = "none"
 ca_file = ""
 log_level = 3
 log_outputs = "3:file:/var/log/kolla/libvirt/libvirtd.log"
-listen_addr = "{{ api_interface_address }}"
+listen_addr = "{{ migration_interface_address }}"
 tcp_port = "{{ nova_libvirt_port }}"

ansible/roles/nova/templates/nova.conf.j2

@@ -185,7 +185,7 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 
 {% if nova_compute_virt_type in ['kvm', 'qemu'] %}
 [libvirt]
-connection_uri = "qemu+tcp://{{ api_interface_address }}/system"
+connection_uri = "qemu+tcp://{{ migration_interface_address }}/system"
 {% if enable_ceph | bool and nova_backend == "rbd" %}
 images_type = rbd
 images_rbd_pool = {{ ceph_nova_pool_name }}

ansible/roles/nova/templates/sshd_config.j2

@@ -1,5 +1,5 @@
 Port {{ nova_ssh_port }}
-ListenAddress {{ api_interface_address }}
+ListenAddress {{ migration_interface_address }}
 
 SyslogFacility AUTHPRIV
 UsePAM yes

releasenotes/notes/add-migration-interface-b53da3ff04c2a7fe.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Two new parameters (migration_interface, migration_interface_address) to make
+    the use of a dedicated migration network possible.