ansible/roles/etcd/tasks/deploy.yml

#
# Licensed to the Apache Software Foundation (ASF) under one or more
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# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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
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# distributed under the License is distributed on an "AS IS" BASIS,
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#
---
# This role will install etcd in group 'etcd' in the environment inventory

- name: "Set the name of the etcd node"
  set_fact:
    name: "etcd{{ groups['etcd'].index(inventory_hostname) }}"

- name: "set the volume_dir"
  set_fact:
    volume_dir: "{{ etcd.dir.data }}/etcd{{ groups['etcd'].index(inventory_hostname) }}:/etcd-data"
  when: etcd_data_dir is defined


- name: "Set the cluster of the etcd cluster"
  set_fact:
    cluster: "{% set etcdhosts = [] %}
              {% for host in groups['etcd'] %}
                  {{ etcdhosts.append('etcd' + ((loop.index-1)|string) + '=' + 'http://' + hostvars[host].ansible_host + ':' + ((2480+loop.index-1)|string) ) }}
              {% endfor %}
              {{ etcdhosts | join(',') }}"

- name: (re)start etcd
  docker_container:
    name: etcd{{ groups['etcd'].index(inventory_hostname) }}
    image: quay.io/coreos/etcd:{{ etcd.version }}
    state: started
    recreate: true
    restart_policy: "{{ docker.restart.policy }}"
    volumes: "{{volume_dir | default([])}}"
    command: "/usr/local/bin/etcd \
               --data-dir=/etcd-data --name '{{ name }}' \
               --initial-advertise-peer-urls http://{{ ansible_host }}:{{ etcd.server.port + groups['etcd'].index(inventory_hostname) }} \
               --advertise-client-urls http://{{ ansible_host }}:{{ etcd.client.port + groups['etcd'].index(inventory_hostname) }} \
               --listen-peer-urls http://0.0.0.0:{{ etcd.server.port + groups['etcd'].index(inventory_hostname) }} \
               --listen-client-urls http://0.0.0.0:{{ etcd.client.port + groups['etcd'].index(inventory_hostname) }} \
               --initial-cluster {{ cluster }} \
               --initial-cluster-state new --initial-cluster-token {{ etcd.cluster.token }} \
               --quota-backend-bytes {{ etcd.quota_backend_bytes }} \
               --snapshot-count {{ etcd.snapshot_count }} \
               --auto-compaction-retention {{ etcd.auto_compaction_retention }} \
               --auto-compaction-mode {{ etcd.auto_compaction_mode }} \
               --log-level {{ etcd.loglevel }}"
    ports:
      - "{{ etcd.client.port + groups['etcd'].index(inventory_hostname) }}:{{ etcd.client.port + groups['etcd'].index(inventory_hostname) }}"
      - "{{ etcd.server.port + groups['etcd'].index(inventory_hostname) }}:{{ etcd.server.port + groups['etcd'].index(inventory_hostname) }}"
    pull: "{{ etcd.pull_etcd | default(true) }}"

- name: wait until etcd in this host is up and running
  uri:
    url: "http://{{ ansible_host }}:{{ etcd.client.port + groups['etcd'].index(inventory_hostname) }}/health"
  register: result
  until: result.status == 200
  retries: 12
  delay: 5