78a828ef42
This patch adds initial support for deploying multiple Nova cells. Splitting a nova-cell role out from the Nova role allows a more granular approach to deploying and configuring Nova services. A new enable_cells flag has been added that enables the support of multiple cells via the introduction of a super conductor in addition to cell-specific conductors. When this flag is not set (the default), nova is configured in the same manner as before - with a single conductor. The nova role now deploys the global services: * nova-api * nova-scheduler * nova-super-conductor (if enable_cells is true) The nova-cell role handles services specific to a cell: * nova-compute * nova-compute-ironic * nova-conductor * nova-libvirt * nova-novncproxy * nova-serialproxy * nova-spicehtml5proxy * nova-ssh This patch does not support using a single cell controller for managing more than one cell. Support for sharing a cell controller will be added in a future patch. This patch should be backwards compatible and is tested by existing CI jobs. A new CI job has been added that tests a multi-cell environment. ceph-mon has been removed from the play hosts list as it is not necessary - delegate_to does not require the host to be in the play. Documentation will be added in a separate patch. Partially Implements: blueprint support-nova-cells Co-Authored-By: Mark Goddard <mark@stackhpc.com> Change-Id: I810aad7d49db3f5a7fd9a2f0f746fd912fe03917
54 lines
2.1 KiB
YAML
54 lines
2.1 KiB
YAML
---
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- import_tasks: get_cell_settings.yml
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- name: Create cell
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vars:
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nova_conductor: "{{ nova_cell_services['nova-conductor'] }}"
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become: true
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kolla_docker:
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action: "start_container"
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command: bash -c 'sudo -E kolla_set_configs && nova-manage cell_v2 create_cell{% if nova_cell_name %} --name {{ nova_cell_name }}{% endif %}'
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common_options: "{{ docker_common_options }}"
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detach: False
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image: "{{ nova_conductor.image }}"
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labels:
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BOOTSTRAP:
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name: "create_cell_nova"
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restart_policy: no
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volumes: "{{ nova_cell_bootstrap_default_volumes + nova_cell_bootstrap_extra_volumes }}"
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register: nova_cell_create
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changed_when:
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- nova_cell_create is success
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failed_when:
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- nova_cell_create.rc != 0
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- '"already exists" not in nova_cell_create.stdout'
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when:
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- inventory_hostname == groups[nova_conductor.group][0] | default(None)
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- nova_cell_settings | length == 0
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- name: Update cell
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vars:
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nova_cell_database_url: "mysql+pymysql://{{ nova_cell_database_user }}:{{ nova_cell_database_password }}@{{ nova_cell_database_address | put_address_in_context('url') }}:{{ nova_cell_database_port }}/{{ nova_cell_database_name }}"
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nova_conductor: "{{ nova_cell_services['nova-conductor'] }}"
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become: true
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kolla_docker:
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action: "start_container"
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command: "bash -c 'sudo -E kolla_set_configs && nova-manage cell_v2 update_cell --cell_uuid {{ nova_cell_settings.cell_uuid }}'"
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common_options: "{{ docker_common_options }}"
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detach: False
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image: "{{ nova_conductor.image }}"
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labels:
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BOOTSTRAP:
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name: "create_cell_nova"
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restart_policy: no
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volumes: "{{ nova_cell_bootstrap_default_volumes + nova_cell_bootstrap_extra_volumes }}"
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register: nova_cell_updated
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changed_when:
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- nova_cell_updated is success
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failed_when:
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- nova_cell_updated.rc != 0
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when:
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- inventory_hostname == groups[nova_conductor.group][0] | default(None)
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- nova_cell_settings | length > 0
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- nova_cell_settings.cell_message_queue != nova_cell_notify_transport_url or nova_cell_settings.cell_database != nova_cell_database_url
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