openstack-ansible/playbooks/roles/lxc_hosts/tasks/lxc_cache_preparation.yml
Major Hayden 05ae112e20 Update cached LXC image in place
The LXC container creation playbook is one of the longest-running playbooks
in the repository.  It generally takes 15-17 minutes to run during the gate
jobs.  Much of this time is spent updating each container with the latest
packages.

This patch causes the LXC cached image to be updated one time before that
image is used for all of the containers.  It reduces the amount of times the
updates actually run and this shortens the time it takes to complete the
playbook.

The updates to the cached image will only occur if a new cache image has
just been downloaded.

Partial-bug: 1489169

Change-Id: Iba64f9a3aeb999907088f2a99e8904700074550b
2015-09-21 17:10:52 +00:00

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2.1 KiB
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---
# Copyright 2015, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
- name: Create apt repos in the cached container
template:
src: sources.list.j2
dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/etc/apt/sources.list"
with_items: lxc_container_caches
tags:
- lxc-cache
- lxc-cache-update
# This task runs several commands against the cached image to speed up the
# lxc_container_create playbook.
- name: Prepare cached image
command: "chroot {{ lxc_container_cache_path }}/{{ item[0].chroot_path }} {{ item[1] }}"
with_nested:
- lxc_container_caches
- lxc_cache_commands
when: cache_download|changed
tags:
- lxc-cache
- lxc-cache-update
- name: Adjust sshd configuration in container
lineinfile:
dest: "{{ lxc_container_cache_path }}/{{ item[0].chroot_path }}/etc/ssh/sshd_config"
regexp: "{{ item[1].regexp }}"
line: "{{ item[1].line }}"
state: present
with_nested:
- lxc_container_caches
- lxc_cache_sshd_configuration
tags:
- lxc-cache
- lxc-cache-update
- name: Obtain the system's ssh public key
set_fact:
lxc_container_ssh_key: "{{ lookup('file', '/root/.ssh/id_rsa.pub') }}"
when: lxc_container_ssh_key is not defined
delegate_to: "{{ physical_host }}"
tags:
- lxc-cache
- lxc-cache-update
- name: Deploy ssh public key into the cached image
lineinfile:
dest: "{{ lxc_container_cache_path }}/{{ item.chroot_path }}/root/.ssh/authorized_keys"
line: "{{ lxc_container_ssh_key }}"
with_items: lxc_container_caches
tags:
- lxc-cache
- lxc-cache-update