Version: release-0.8

Restart MySQL cluster

You can restart all pods of the cluster. When an exception occurs in a database, you can try to restart it.

note

All pods restart in the order of learner -> follower -> leader and the leader may change after the cluster restarts.

Steps

Restart a cluster.
You can use kbcli or create an OpsRequest to restart a cluster.
Option 1. (Recommended) Use kbcli
Configure the values of components and ttlSecondsAfterSucceed and run the command below to restart a specified cluster.
```
kbcli cluster restart <name> --components="mysql" \
--ttlSecondsAfterSucceed=30
```
- components describes the component name that needs to be restarted.
- ttlSecondsAfterSucceed describes the time to live of an OpsRequest job after the restarting succeeds.
Option 2. Create an OpsRequest
Run the command below to restart a cluster.
```
kubectl apply -f - <<EOF
apiVersion: apps.kubeblocks.io/v1alpha1
kind: OpsRequest
metadata:
  name: ops-restart
spec:
  clusterRef: mysql-cluster
  type: Restart 
  restart:
  - componentName: mysql
EOF
```

Check the cluster status to validate the restarting.

kbcli cluster list mysql-cluster
>
NAME                 NAMESPACE        CLUSTER-DEFINITION        VERSION                TERMINATION-POLICY        STATUS         CREATED-TIME
mysql-cluster        default          apecloud-mysql            ac-mysql-8.0.30        Delete                    Running        Jan 29,2023 14:29 UTC+0800

STATUS=Restarting: it means the cluster restart is in progress.
STATUS=Running: it means the cluster has been restarted.

Restart MySQL cluster

Steps​

Steps