The ceph status command returns a lot of information stored in variables
and/or facts which could consume resources for nothing.
When checking the rgw/rbdmirror services status, we're only using the
servicmap structure in the ceph status output.
To optimize this, we could use the ceph service dump command which contains
the same needed information.
This command returns less information and is slightly faster than the ceph
status command.
$ ceph status -f json | wc -c
2001
$ ceph service dump -f json | wc -c
1105
$ time ceph status -f json > /dev/null
real 0m0.557s
user 0m0.516s
sys 0m0.040s
$ time ceph service dump -f json > /dev/null
real 0m0.454s
user 0m0.434s
sys 0m0.020s
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
We should add retry/delay to check the presence of the rbdmirror daemon
in the cluster status because the status takes some time to be updated.
Also the metadata.hostname isn't a good key to check because it doesn't
reflect the ansible_hostname fact. We should use metadata.id instead.
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
The ceph-facts are running on localhost so if this node is using a
different OS/release that the ceph node we can have a mismatch between
docker/podman container binary.
This commit also reduces the scope of the ceph-facts role because we only
need the container_binary tasks.
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
Use facility built-in in Ansible to check whether a command was executed
successfully rather looking at its return value.
Signed-off-by: Rishabh Dave <ridave@redhat.com>
Add a playbook named "shrink-rbdmirror.yml" in infrastructure-playbooks/
that removes a RBD Mirror from a node in an already deployed Ceph
cluster.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1677431
Signed-off-by: Rishabh Dave <ridave@redhat.com>
Guillaume Abrioux
Dimitri Savineau
Rishabh Dave