-
Doug Szumski authored
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
Doug Szumski authoredThis 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:
nova.yml 6.64 KiB
---
# This playbook is for nova services. Due to support for deployment of cells,
# nova is separated into two roles - nova and nova-cell. This makes it more
# complicated than other services, as we may execute each role several times
# for a given operation.
#
# 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
# We need to perform database bootstrapping before deploying or upgrading any
# containers, to ensure all database schema migrations have been performed,
# both in the API and cell databases. Note that this should not be disruptive
# to the Nova services, which will continue to run against the new schema.
- name: Bootstrap nova API databases
gather_facts: false
hosts:
- nova-api
- '&enable_nova_True'
tags:
- nova
- nova-bootstrap
- nova-api
- nova-api-bootstrap
serial: '{{ kolla_serial|default("0") }}'
tasks:
# * Create nova API & cell0 DBs & users
# * API DB schema migrations
# * Map cell0
# * Cell0 DB schema migrations
- name: Bootstrap deploy
include_role:
name: nova
tasks_from: bootstrap
when:
- enable_nova | bool
- kolla_action in ['deploy', 'reconfigure']
# * API DB schema migrations
# * Cell0 DB schema migrations
- name: Bootstrap upgrade
include_role:
name: nova
tasks_from: bootstrap_upgrade
when:
- enable_nova | bool
- kolla_action == 'upgrade'
- name: Bootstrap nova cell databases
gather_facts: false
hosts:
- nova-conductor
- '&enable_nova_True'
tags:
- nova
- nova-bootstrap