kayobe/ansible/seed-vm-provision.yml
Mark Goddard f639ad0b35 Use ansible_facts to reference facts
By default, Ansible injects a variable for every fact, prefixed with
ansible_. This can result in a large number of variables for each host,
which at scale can incur a performance penalty. Ansible provides a
configuration option [0] that can be set to False to prevent this
injection of facts. In this case, facts should be referenced via
ansible_facts.<fact>.

This change updates all references to Ansible facts within Kayobe
from using individual fact variables to using the items in the
ansible_facts dictionary. This allows users to disable fact variable
injection in their Ansible configuration, which may provide some
performance improvement.

This change disables fact variable injection in the ansible
configuration used in CI, to catch any attempts to use the injected
variables.

[0] https://docs.ansible.com/ansible/latest/reference_appendices/config.html#inject-facts-as-vars

Story: 2007993
Task: 42464
Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/791276

Change-Id: I14db53ed6e57d37bbd28dd5819e432e3fe6628b2
2021-08-21 09:57:29 +02:00

114 lines
4.1 KiB
YAML

---
- name: Ensure that the seed VM configdrive exists
hosts: seed-hypervisor
vars:
seed_host: "{{ groups['seed'][0] }}"
pre_tasks:
- name: Verify the seed host exists in the Ansible inventory
fail:
msg: >
There should be exactly one host in the seed group. There are
currently {{ groups['seed'] | length }}.
when: groups['seed'] | length != 1
# NOTE(priteau): On seed hypervisors running CentOS 8, the configdrive role
# will fail to install coreutils if coreutils-single is already present.
# Until the role handles it, install it using the --allowerasing option
# which will remove coreutils-single.
- name: Ensure coreutils package is installed
command: "dnf install coreutils -y --allowerasing"
become: True
when:
- ansible_facts.os_family == 'RedHat'
- name: Ensure the image cache directory exists
file:
path: "{{ image_cache_path }}"
state: directory
owner: "{{ ansible_facts.user_uid }}"
group: "{{ ansible_facts.user_gid }}"
become: True
roles:
- role: jriguera.configdrive
# For now assume the VM OS family is the same as the hypervisor's.
configdrive_os_family: "{{ ansible_facts.os_family }}"
configdrive_uuid: "{{ seed_host | to_uuid }}"
configdrive_fqdn: "{{ seed_host }}"
configdrive_name: "{{ seed_host }}"
configdrive_ssh_public_key: "{{ lookup('file', ssh_public_key_path) }}"
configdrive_config_dir: "{{ image_cache_path }}"
configdrive_volume_path: "{{ image_cache_path }}"
configdrive_config_dir_delete: True
configdrive_resolv:
domain: "{{ hostvars[seed_host].resolv_domain | default }}"
search: "{{ hostvars[seed_host].resolv_search | default }}"
dns: "{{ hostvars[seed_host].resolv_nameservers | default([]) }}"
configdrive_network_device_list: >
{{ hostvars[seed_host].network_interfaces |
map('net_configdrive_network_device', seed_host) |
list }}
tasks:
- name: Set a fact containing the configdrive image path
set_fact:
seed_vm_configdrive_path: "{{ image_cache_path }}/{{ seed_host }}.iso"
- name: Ensure configdrive is decoded and decompressed
shell: >
base64 -d {{ image_cache_path }}/{{ seed_host | to_uuid }}.gz
| gunzip
> {{ seed_vm_configdrive_path }}
- name: Ensure unnecessary files are removed
file:
path: "{{ item }}"
state: absent
with_items:
- "{{ image_cache_path }}/{{ seed_host | to_uuid }}.gz"
- name: Ensure that the seed VM is provisioned
hosts: seed-hypervisor
vars:
seed_host: "{{ groups['seed'][0] }}"
pre_tasks:
- name: Check the size of the configdrive image
stat:
path: "{{ seed_vm_configdrive_path }}"
get_checksum: False
get_md5: False
mime: False
register: stat_result
roles:
- role: stackhpc.libvirt-vm
seed_vm_configdrive_device: cdrom
seed_vm_configdrive_volume:
name: "{{ hostvars[seed_host].seed_vm_name }}-configdrive"
pool: "{{ hostvars[seed_host].seed_vm_pool }}"
# Round size up to next multiple of 4096.
capacity: "{{ (stat_result.stat.size + 4095) // 4096 * 4096 }}"
device: "{{ seed_vm_configdrive_device }}"
format: "raw"
image: "{{ seed_vm_configdrive_path }}"
libvirt_vm_image_cache_path: "{{ image_cache_path }}"
libvirt_vms:
- name: "{{ hostvars[seed_host].seed_vm_name }}"
memory_mb: "{{ hostvars[seed_host].seed_vm_memory_mb }}"
vcpus: "{{ hostvars[seed_host].seed_vm_vcpus }}"
volumes: "{{ hostvars[seed_host].seed_vm_volumes + [seed_vm_configdrive_volume] }}"
interfaces: "{{ hostvars[seed_host].seed_vm_interfaces }}"
console_log_enabled: true
become: True
tasks:
- name: Wait for SSH access to the seed VM
local_action:
module: wait_for
host: "{{ hostvars[seed_host].ansible_host }}"
port: 22
state: started
# NOTE: Ensure we exceed the 5 minute DHCP timeout of the eth0
# interface if necessary.
timeout: 360