ceph-ansible/rolling_update.yml

---
# This playbook does a rolling update for all the Ceph services
# Change the value of serial: to adjust the number of server to be updated.
#
# The four roles that apply to the ceph hosts will be applied: ceph-common,
# ceph-mon, ceph-osd and ceph-mds. So any changes to configuration, package updates, etc,
# will be applied as part of the rolling update process.
#

# /!\ DO NOT FORGET TO CHANGE THE RELEASE VERSION FIRST! /!\

- hosts:
  - mons
  - osds
  - mdss
  - rgws
  sudo: True
  roles:
  - ceph-common

- hosts: mons
  serial: 1
  sudo: True
  roles:
  - ceph-mon
  post_tasks:
  - name: restart monitor(s)
    service: >
      name=ceph
      state=restarted
      args=mon

- hosts: osds
  serial: 1
  sudo: True
  roles:
  - ceph-osd
  post_tasks:
  - name: restart object storage daemon(s)
    command: service ceph-osd-all restart
    when: ansible_distribution == "Ubuntu"
  - name: restart object storage daemon(s)
    service: name=ceph state=restarted args=osd
    when: ansible_distribution == "Debian"

- hosts: mdss
  serial: 1
  sudo: True
  roles:
  - ceph-mds
  post_tasks:
  - name: restart metadata server(s)
    service: >
      name=ceph
      state=restarted
      args=mds