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: common,
# mon, osd and 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: all
  sudo: True
  roles:
  - common

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

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