---
# Copyright 2014, 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: Drop hosts file entries script
  template:
    src: "openstack-host-hostfile-setup.sh.j2"
    dest: "/usr/local/bin/openstack-host-hostfile-setup.sh"
    mode: "0755"

- name: Stat host file
  stat:
    path: /etc/hosts
  register: stat_hosts

- name: Update hosts file
  command: "/usr/local/bin/openstack-host-hostfile-setup.sh"
  register: update_hosts
  changed_when: stat_hosts.stat.md5 | string != update_hosts.stdout | string

---
# Copyright 2014, 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: Drop hosts file entries script locally
  template:
    src: "openstack-host-hostfile-setup.sh.j2"
    dest: "/usr/local/bin/openstack-host-hostfile-setup.sh"
    mode: "0755"
  delegate_to: localhost
  run_once: true

- name: Copy templated hosts file entries script
  copy:
    src: "/usr/local/bin/openstack-host-hostfile-setup.sh"
    dest: "/usr/local/bin/openstack-host-hostfile-setup.sh"
    mode: "0755"

- name: Stat host file
  stat:
    path: /etc/hosts
  register: stat_hosts

- name: Update hosts file
  command: "/usr/local/bin/openstack-host-hostfile-setup.sh"
  register: update_hosts
  changed_when: stat_hosts.stat.md5 | string != update_hosts.stdout | string

Improve deployment performance on large clusters
Improve deployment performance on large clusters

Template the openstack-host-hostfile-setup script once locally and then
copy it to all other other hosts, rather than templating the script on
every host. In large deployments, this greatly reduces the running time
of the update hosts file tasks.

Change-Id: Ic4d2f5242e0ca15956b29615df1121ec3fac414a
