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
29 lines
1.2 KiB
YAML
29 lines
1.2 KiB
YAML
---
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# Create RabbitMQ users and vhosts.
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- block:
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- import_role:
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name: service-rabbitmq
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vars:
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service_rabbitmq_users: "{{ nova_cell_rpc_rabbitmq_users }}"
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# Create users for cells in parallel.
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service_rabbitmq_run_once: false
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service_rabbitmq_when: "{{ inventory_hostname == groups[nova_cell_conductor_group][0] | default }}"
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# Delegate to a host in the RPC group.
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service_rabbitmq_delegate_host: "{{ groups[nova_cell_rpc_group_name][0] | default }}"
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- import_role:
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name: service-rabbitmq
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vars:
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service_rabbitmq_users: "{{ nova_cell_notify_rabbitmq_users }}"
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# Create users for cells in parallel.
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service_rabbitmq_run_once: false
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service_rabbitmq_when: "{{ inventory_hostname == groups[nova_cell_conductor_group][0] | default }}"
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# Delegate to a host in the notify group.
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service_rabbitmq_delegate_host: "{{ groups[nova_cell_notify_group_name][0] | default }}"
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when:
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- nova_cell_rpc_group_name != nova_cell_notify_group_name or
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nova_cell_rpc_rabbitmq_users != nova_cell_notify_rabbitmq_users
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when: nova_cell_rpc_transport == 'rabbit'
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tags: always
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