Currently, the ReaR task that runs the backup using ansible is:


- name: Create the node backup
  command: rear {{ (tripleo_backup_and_restore_rear_simulate | bool) | ternary('-s ', '') }}-d -v mkbackup
  register: tripleo_backup_and_restore_rear_output
  when: tripleo_backup_and_restore_rear_output is undefined
  tags:
    - bar_create_recover_image

This task is very long running (over 40 minutes) so if the controllers have some kind of session timeout (like the one specified by the env variable TMOUT), this will kill the task and end the backup.

It would be necessary to add an async configuration to this task so it runs as async while, with a poll, the playbook execution waits for the finalization of the task:

async: 3600
poll: 60