es-cluster-restart.yml

---
- name: Rolling elasticsearch cluster restart
  hosts: es
  serial: 1
  sudo: yes

  vars:
    uribody_true:  '{"transient":{"cluster.routing.allocation.enable":"none"}}'
    uribody_false: '{"transient":{"cluster.routing.allocation.enable":"all"}}'
    es_http_port: 9200
    es_transport_port: 9300

  pre_tasks:
    - name: Disable shard allocation for the cluster
      uri: url=http://localhost:{{ es_http_port }}/_cluster/settings method=PUT body='{{ uribody_true }}'

  tasks:
    - name: Restart elasticsearch node
      service: name=elasticsearch state=restarted

    - name: Wait for elasticsearch to come back up
      wait_for: port={{ es_transport_port }} delay=35

  post_tasks:
    - name: Enable shard allocation for the cluster
      uri: url=http://localhost:{{ es_http_port }}/_cluster/settings method=PUT body='{{ uribody_false }}'
      delay: 3
      tags: [ "elasticsearch" , "esconfig" ]

    - name: Wait for cluster health to return to yellow
      uri: url=http://localhost:{{ es_http_port }}/_cluster/health method=GET
      register: response
      until: "response.json.status == 'yellow'"
      retries: 5
      delay: 30

es-rolling-upgrade.yml

---
- name: Elasticsearch rolling upgrade
  hosts: es
  serial: 1
  sudo: yes

  vars:
    uribody_true:  '{"transient":{"cluster.routing.allocation.enable":"none"}}'
    uribody_false: '{"transient":{"cluster.routing.allocation.enable":"all"}}'
    es_http_port: 9200
    es_transport_port: 9300

  pre_tasks:
    - name: Disable shard allocation for the cluster
      uri: url=http://localhost:{{ es_http_port }}/_cluster/settings method=PUT body='{{ uribody_true }}'

  tasks:
    - name: Shutdown elasticsearch node
      uri: url=http://localhost:{{ es_http_port }}/_cluster/nodes/_local/_shutdown method=POST

    - name: Wait for all shards to be reallocated
      uri: url=http://localhost:{{ es_http_port }}/_cluster/health method=GET
      register: response
      until:    "response.json.relocating_shards == 0"
      retries: 5
      delay: 30

    - name: Update elasticsearch
      yum: name=elasticsearch state=latest

    - name: Start elasticsearch
      service: name=elasticsearch enabled=yes state=started

    - name: Wait for elasticsearch node to come back up
      wait_for: port={{ es_transport_port }} delay=35

    - name: Wait for cluster health to return to yellow
      uri: url=http://localhost:{{ es_http_port }}/_cluster/health method=GET
      register: response
      until: "response.json.status == 'yellow'"
      retries: 5
      delay: 30

  post_tasks:
    - name: Enable shard allocation for the cluster
      uri: url=http://localhost:{{ es_http_port }}/_cluster/settings method=PUT body='{{ uribody_false }}'
      delay: 3