ansible_drbd/drbd.yml

---
- name: Cluster NFC DRBD
  hosts: nodes
  any_errors_fatal: true
  tasks:
    - name: Install DRBD
      apt:
        name: drbd-utils
        state: present
        update_cache: yes

    - name: Check patrition
      shell: ls {{ drbd_disk}}1
      register: result
      failed_when: False
      changed_when: False

    - name: Create patrition
      shell: echo -en "o\nn\np\n1\n\n\nw\n" | fdisk {{ drbd_disk }}
      register: result
      when: result.rc == 2
      failed_when:
        - "'Syncing disks' not in result.stdout"
        - "'Created a new partition' not in result.stdout"

    - name: Check DRBD status
      command: drbdadm status {{ drbd_resource_name }}
      register: result
      changed_when: False
      failed_when: False

    - name: Create mount point
      file:
        path: /mnt/nfs
        state: directory

    - name: Unmount
      mount:
        path: /mnt/nfs
        state: unmounted

    - name: Create config
      template:
        src: resource.res.j2
        dest: /etc/drbd.d/{{ drbd_resource_name }}.res

    - name: Down resource
      shell: drbdadm down {{ drbd_resource_name }}
      when: result.rc == 0

    #- name: Check config
    #  command: drbdadm dump all

    - name: Find metadata on disk
      shell: drbdmeta 0 v08 {{ drbd_disk }}1 internal check-resize
      register: find_metadata
      changed_when: False
      failed_when: False

    - name: Create metadata
      #command: drbdmeta 0 v08 {{ drbd_disk }}1 internal create-md 2 --force
      command: drbdadm create-md --force {{ drbd_resource_name }}
      when: find_metadata.rc != 0

    - name: Up resource
      command: drbdadm up {{ drbd_resource_name }}

    - name: Find Primary
      shell: drbdadm status {{ drbd_resource_name }} | grep Primary
      register: result_primary
      changed_when: False
      failed_when: False

#    - name: Check DRBD role
#      shell: drbdadm status {{ drbd_resource_name }} | grep "{{ drbd_resource_name }} role:" | awk -F ":" '{print $2}'
#      register: result
#      changed_when: False
#      failed_when: False
#    - debug: var=result
#      failed_when: True

    - name: Resync resource
      command: drbdadm primary --force {{ drbd_resource_name }}
      # drbdadm new-current-uuid --clear-bitmap shared/0
      when: result_primary.rc != 0
      run_once: true

    - name: Check status
      shell: drbdadm status | grep {{ drbd_resource_name }}
      register: drbd_status

    - name: Create FS
      shell: mkfs.ext4 /dev/drbd1
      when: "'Primary' in drbd_status.stdout"

    - name: Mount
      mount:
        path: /mnt/nfs
        src: /dev/drbd1
        fstype: ext4
        state: mounted
      when: "'Primary' in drbd_status.stdout"
...