This was taken from the openshift ansible repository here:
https://github.com/leseb/openshift-ansible/tree/master/roles/installer_checkpoint
Rationale:
A complete OpenShift cluster installation is comprised of many different
components which can take 30 minutes to several hours to complete. If
the installation should fail, it could be confusing to understand at
which component the failure occurred. Additionally, it may be desired to
re-run only the component which failed instead of starting over from the
beginning. Components which came after the failed component would also
need to be run individually.
Ceph has a similar situation so we can benefit from that
callback_plugin.
Signed-off-by: Sébastien Han <seb@redhat.com>
Sébastien Han