backup-obnam.yml

---
# This will install 'obnam' on the control node and
# perform pull based backups from each of the target nodes
# to the control node.
# Requires the following to be defined in inventory:
# backup:
#   root: (base of backup target)
#   exclude:
#      - a list of paths to exclude
#   sources:
#      - a list of paths to backup
- name: install obnam on control node
  hosts: localhost
  user: root

  tasks:
      - name: install obnam
        yum: name=obnam state=installed
        when: ansible_os_family == "RedHat"

      - name: install obnam
        apt: name=obnam state=installed
        when: ansible_os_family == "Debian"

- name: backup via obnam
  hosts: all

  tasks:
      - set_fact:
          my_repo:  "{{ backup.root }}/{{ backup.repo }}"
          my_log:   "{{ backup.root }}/{{ inventory_hostname }}-{{ ansible_date_time.iso8601 }}.log"
        tags: backup

      - name: perform backup
        delegate_to: localhost
        tags: backup
        command: >
            obnam
            --repo {{ my_repo }}
            --one-file-system
            --client-name={{ inventory_hostname }}
            --log={{ my_log }}
            --exclude-caches
            --exclude '{{ backup.exclude|join("' --exclude '") }}'
            backup {{ backup.sources|join(' ') }}

#      - name: verify backup
#        delegate_to: localhost
#        shell: >
#            obnam {{ item }} >> {{ my_log }}
#        with_items:
#            - verify {{ my_repo }} {{ backup.sources[0] }}