3af28d2151
Deploy a small cloud. Add one host to the compute group in the
inventory, and scale out:
$ kolla-ansible deploy --limit <new compute host>
The command succeeds, but creating an instance fails with the following:
Host 'compute0' is not mapped to any cell
This happens because we only discover computes on the first host in the
cell's nova conductor group. If that host is not in the specified limit,
the discovery will not happen.
This change fixes the issue by running compute discovery when any ironic
or virtualised compute hosts are in the play batch, and delegating it to
a conductor.
Change-Id: Ie984806240d147add825ffa8446ae6ff55ca4814
Closes-Bug: #1869371
79 lines
3.3 KiB
YAML
79 lines
3.3 KiB
YAML
---
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# We need to wait for all expected compute services to register before running
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# cells v2 host discovery. This includes virtualised compute services and
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# ironic compute services.
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# Work with --limit by including only hosts in ansible_play_batch.
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- name: Build a list of expected compute service hosts
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vars:
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# For virt, use ansible_nodename rather than inventory_hostname, since this
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# is similar to what nova uses internally as its default for the
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# [DEFAULT] host config option.
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virt_compute_service_hosts: >-
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{{ virt_computes_in_batch |
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map('extract', hostvars, 'ansible_nodename') |
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list }}
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# For ironic, use {{ansible_hostname}}-ironic since this is what we
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# configure for [DEFAULT] host in nova.conf.
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ironic_compute_service_hosts: >-
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{{ ironic_computes_in_batch |
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map('extract', hostvars, 'ansible_hostname') |
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map('regex_replace', '^(.*)$', '\1-ironic') |
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list }}
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set_fact:
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expected_compute_service_hosts: "{{ virt_compute_service_hosts + ironic_compute_service_hosts }}"
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delegate_to: "{{ groups[nova_cell_conductor_group][0] }}"
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- name: Waiting for nova-compute services to register themselves
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become: true
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command: >
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docker exec kolla_toolbox openstack
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--os-interface internal
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--os-auth-url {{ keystone_admin_url }}
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--os-identity-api-version 3
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--os-project-domain-name {{ openstack_auth.domain_name }}
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--os-tenant-name {{ openstack_auth.project_name }}
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--os-username {{ openstack_auth.username }}
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--os-password {{ keystone_admin_password }}
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--os-user-domain-name {{ openstack_auth.domain_name }}
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--os-region-name {{ openstack_region_name }}
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{% if openstack_cacert != '' %}--os-cacert {{ openstack_cacert }}{% endif %}
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compute service list --format json --column Host --service nova-compute
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register: nova_compute_services
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changed_when: false
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retries: 20
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delay: 10
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until:
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- nova_compute_services is success
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# A list containing the 'Host' field of compute services that have
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# registered themselves. Don't exclude compute services that are disabled
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# since these could have been explicitly disabled by the operator. While we
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# could exclude services that are down, the nova-manage cell_v2
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# discover_hosts does not do this so let's not block on it here.
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# NOTE(mgoddard): Cannot factor this out into an intermediary variable
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# before ansible 2.8, due to
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# https://bugs.launchpad.net/kolla-ansible/+bug/1835817.
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- (nova_compute_services.stdout |
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from_json |
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map(attribute='Host') |
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list)
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is superset(expected_compute_service_hosts)
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delegate_to: "{{ groups[nova_cell_conductor_group][0] }}"
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- import_tasks: get_cell_settings.yml
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delegate_to: "{{ groups[nova_cell_conductor_group][0] }}"
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- name: Fail if cell settings not found
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fail:
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msg: >-
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Unable to find settings for {{ nova_cell_name or 'the default cell' }}.
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when: not nova_cell_settings
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delegate_to: "{{ groups[nova_cell_conductor_group][0] }}"
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# TODO(yoctozepto): no need to do --by-service if ironic not used
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- name: Discover nova hosts
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become: true
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command: >
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docker exec nova_conductor nova-manage cell_v2 discover_hosts --by-service --cell_uuid {{ nova_cell_settings.cell_uuid }}
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changed_when: False
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delegate_to: "{{ groups[nova_cell_conductor_group][0] }}"
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