Doug Szumski 78a828ef42 Support multiple nova cells
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
2019-10-16 17:42:36 +00:00

217 lines
6.6 KiB
YAML

---
- name: Setting sysctl values
become: true
sysctl: name={{ item.name }} value={{ item.value }} sysctl_set=yes
with_items:
- { name: "net.bridge.bridge-nf-call-iptables", value: 1}
- { name: "net.bridge.bridge-nf-call-ip6tables", value: 1}
- { name: "net.ipv4.conf.all.rp_filter", value: "{{ nova_compute_host_rp_filter_mode }}"}
- { name: "net.ipv4.conf.default.rp_filter", value: "{{ nova_compute_host_rp_filter_mode }}"}
when:
- set_sysctl | bool
- inventory_hostname in groups[nova_cell_compute_group]
- name: Ensuring config directories exist
become: true
file:
path: "{{ node_config_directory }}/{{ item.key }}"
state: "directory"
owner: "{{ config_owner_user }}"
group: "{{ config_owner_group }}"
mode: "0770"
when:
- inventory_hostname in groups[item.value.group]
- item.value.enabled | bool
with_dict: "{{ nova_cell_services }}"
- include_tasks: ceph.yml
when:
- enable_ceph | bool and nova_backend == "rbd"
- inventory_hostname in groups[nova_cell_conductor_group] or
inventory_hostname in groups[nova_cell_compute_group]
- include_tasks: external_ceph.yml
when:
- not enable_ceph | bool and (nova_backend == "rbd" or cinder_backend_ceph | bool)
- inventory_hostname in groups[nova_cell_compute_group]
- name: Check if policies shall be overwritten
local_action: stat path="{{ item }}"
run_once: True
register: nova_policy
with_first_found:
- files: "{{ supported_policy_format_list }}"
paths:
- "{{ node_custom_config }}/nova/"
skip: true
- name: Set nova policy file
set_fact:
nova_policy_file: "{{ nova_policy.results.0.stat.path | basename }}"
nova_policy_file_path: "{{ nova_policy.results.0.stat.path }}"
when:
- nova_policy.results
- name: Copying over config.json files for services
become: true
template:
src: "{{ item.key }}.json.j2"
dest: "{{ node_config_directory }}/{{ item.key }}/config.json"
mode: "0660"
when:
- inventory_hostname in groups[item.value.group]
- item.value.enabled | bool
with_dict: "{{ nova_cell_services }}"
notify:
- "Restart {{ item.key }} container"
- name: Set XenAPI facts
set_fact:
xenapi_facts: "{{ lookup('file', xenapi_facts_root + '/' + inventory_hostname + '/' + xenapi_facts_file) | from_json }}"
when:
- nova_compute_virt_type == 'xenapi'
- inventory_hostname in groups[nova_cell_compute_group]
- name: Copying over nova.conf
become: true
vars:
service_name: "{{ item.key }}"
merge_configs:
sources:
- "{{ role_path }}/templates/nova.conf.j2"
- "{{ node_custom_config }}/global.conf"
- "{{ node_custom_config }}/nova.conf"
- "{{ node_custom_config }}/nova/{{ item.key }}.conf"
- "{{ node_custom_config }}/nova/{{ inventory_hostname }}/nova.conf"
dest: "{{ node_config_directory }}/{{ item.key }}/nova.conf"
mode: "0660"
when:
- inventory_hostname in groups[item.value.group]
- item.value.enabled | bool
- item.key in nova_cell_services_require_nova_conf
with_dict: "{{ nova_cell_services }}"
notify:
- "Restart {{ item.key }} container"
- name: Copying over libvirt configuration
become: true
vars:
service: "{{ nova_cell_services['nova-libvirt'] }}"
template:
src: "{{ item.src }}"
dest: "{{ node_config_directory }}/nova-libvirt/{{ item.dest }}"
mode: "0660"
when:
- inventory_hostname in groups[service.group]
- service.enabled | bool
with_items:
- { src: "qemu.conf.j2", dest: "qemu.conf" }
- { src: "libvirtd.conf.j2", dest: "libvirtd.conf" }
notify:
- Restart nova-libvirt container
- name: Copying over libvirt TLS keys (nova-libvirt)
include_tasks: "config-libvirt-tls.yml"
vars:
service: "{{ nova_cell_services['nova-libvirt'] }}"
service_name: nova-libvirt
file: "{{ item }}"
when:
- inventory_hostname in groups[service.group]
- service.enabled | bool
- libvirt_tls | bool
- libvirt_tls_manage_certs | bool
with_items:
- cacert.pem
- servercert.pem
- serverkey.pem
- clientcert.pem
- clientkey.pem
- name: Copying over libvirt TLS keys (nova-compute)
include_tasks: "config-libvirt-tls.yml"
vars:
service: "{{ nova_cell_services['nova-compute'] }}"
service_name: nova-compute
file: "{{ item }}"
when:
- inventory_hostname in groups[service.group]
- service.enabled | bool
- libvirt_tls | bool
- libvirt_tls_manage_certs | bool
with_items:
- cacert.pem
- clientcert.pem
- clientkey.pem
- name: Copying files for nova-ssh
become: true
vars:
service: "{{ nova_cell_services['nova-ssh'] }}"
template:
src: "{{ item.src }}"
dest: "{{ node_config_directory }}/nova-ssh/{{ item.dest }}"
mode: "0660"
when:
- inventory_hostname in groups[service.group]
- service.enabled | bool
with_items:
- { src: "sshd_config.j2", dest: "sshd_config" }
- { src: "id_rsa", dest: "id_rsa" }
- { src: "id_rsa.pub", dest: "id_rsa.pub" }
- { src: "ssh_config.j2", dest: "ssh_config" }
notify:
- Restart nova-ssh container
- name: Copying VMware vCenter CA file
vars:
service: "{{ nova_cell_services['nova-compute'] }}"
copy:
src: "{{ node_custom_config }}/vmware_ca"
dest: "{{ node_config_directory }}/nova-compute/vmware_ca"
mode: "0660"
when:
- nova_compute_virt_type == "vmware"
- not vmware_vcenter_insecure | bool
- inventory_hostname in groups[service.group]
- service.enabled | bool
notify:
- Restart nova-compute container
- name: Copying 'release' file for nova_compute
vars:
service: "{{ nova_cell_services['nova-compute'] }}"
copy:
src: "{{ item }}"
dest: "{{ node_config_directory }}/nova-compute/release"
mode: "0660"
with_first_found:
- files:
- "{{ node_custom_config }}/nova_compute/{{ inventory_hostname }}/release"
- "{{ node_custom_config }}/nova_compute/release"
- "{{ node_custom_config }}/nova/release"
skip: true
when:
- inventory_hostname in groups[service.group]
- service.enabled | bool
notify:
- Restart nova-compute container
- name: Copying over existing policy file
become: true
template:
src: "{{ nova_policy_file_path }}"
dest: "{{ node_config_directory }}/{{ item.key }}/{{ nova_policy_file }}"
mode: "0660"
when:
- inventory_hostname in groups[item.value.group]
- item.value.enabled | bool
- nova_policy_file is defined
- item.key in nova_cell_services_require_policy_json
with_dict: "{{ nova_cell_services }}"
notify:
- "Restart {{ item.key }} container"
- include_tasks: check-containers.yml
when: kolla_action != "config"