Pause/resume Percona XtraDB Cluster

There may be external situations when it is needed to shutdown the Percona XtraDB Cluster for a while and then start it back up (some works related to the maintenance of the enterprise infrastructure, etc.).

The deploy/cr.yaml file contains a special spec.pause key for this. Setting it to true gracefully stops the cluster:

spec:
  .......
  pause: true

Pausing the cluster may take some time, and when the process is over, you will see only the Operator Pod running:

$ kubectl get pods
NAME                                               READY   STATUS    RESTARTS   AGE
percona-xtradb-cluster-operator-79966668bd-rswbk   1/1     Running   0          12m

To start the cluster after it was shut down just revert the spec.pause key to false.

Starting the cluster will take time. The process is over when all Pods have reached their Running status:

NAME                                               READY   STATUS    RESTARTS   AGE
cluster1-haproxy-0                                 2/2     Running   0          6m17s
cluster1-haproxy-1                                 2/2     Running   0          4m59s
cluster1-haproxy-2                                 2/2     Running   0          4m36s
cluster1-pxc-0                                     3/3     Running   0          6m17s
cluster1-pxc-1                                     3/3     Running   0          5m3s
cluster1-pxc-2                                     3/3     Running   0          3m56s
percona-xtradb-cluster-operator-79966668bd-rswbk   1/1     Running   0          9m54s

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Last update: 2025-04-15