ceph-ansible/infrastructure-playbooks/add-osd.yml

---
# This playbook is used to add a new OSD to
# an existing cluster without the need for running
# the ceph-docker-common or ceph-common and ceph-mon role again against all
# of the existing monitors.
#
# It can run from any machine. Even if the fetch directory is not present
# it will be created.
#
# Ensure that all monitors are present in the mons
# group in your inventory so that the ceph configuration file
# is created correctly for the new OSD(s).
#
# It is expected to edit your inventory file to only point to the OSD hosts
# you want to play the playbook on. So you need to comment already deployed OSD
# and let uncommented the new OSDs.
#
- hosts:
  - mons
  - osds

  gather_facts: False

  vars:
    delegate_facts_host: True

  pre_tasks:
    - name: gather facts
      setup:
      when:
        - not delegate_facts_host | bool

    - name: gather and delegate facts
      setup:
      delegate_to: "{{ item }}"
      delegate_facts: True
      with_items:
        - "{{ groups['mons'] }}"
        - "{{ groups['osds'] }}"
      run_once: True
      when:
        - delegate_facts_host | bool

  roles:
    - ceph-defaults
    - ceph-validate
    - ceph-facts

- hosts: osds
  gather_facts: False
  become: True

  vars:
    delegate_facts_host: True

  pre_tasks:

    - name: gather facts
      setup:
      when:
        - not delegate_facts_host | bool

    - name: gather and delegate facts
      setup:
      delegate_to: "{{ item }}"
      delegate_facts: True
      with_items:
        - "{{ groups['mons'] }}"
        - "{{ groups['osds'] }}"
      run_once: True
      when:
        - delegate_facts_host | bool

    # this task is needed so we can skip the openstack_config.yml include in roles/ceph-osd
    - name: set_fact add_osd
      set_fact:
        add_osd: True

    - name: set noup flag
      command: "{{ docker_exec_cmd | default('') }} ceph --cluster {{ cluster }} osd set noup"
      delegate_to: "{{ groups['mons'][0] }}"
      run_once: True
      changed_when: False

  roles:
    - role: ceph-defaults
    - role: ceph-handler
    - role: ceph-infra
    - role: ceph-docker-common
      when: containerized_deployment | bool
    - role: ceph-facts
    - role: ceph-common
      when: not containerized_deployment | bool
    - role: ceph-config
    - role: ceph-osd

  post_tasks:
    - name: unset noup flag
      command: "{{ docker_exec_cmd | default('') }} ceph --cluster {{ cluster }} osd unset noup"
      delegate_to: "{{ groups['mons'][0] }}"
      run_once: True
      changed_when: False