KubeBlocks
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KubeBlocks for Redis

Cluster Management

Create and connect
Scale
Expand volume
Restart
Stop/Start
Delete protection

Configuration

Configure cluster parameters

High Availability

High Availability for Redis
Redis Cluster Mode
  1. Steps

Restart a Redis cluster

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

NOTE

The pod role may change after the cluster restarts.

Steps

  1. Create an OpsRequest to restart a cluster.

    kubectl apply -f - <<EOF apiVersion: apps.kubeblocks.io/v1alpha1 kind: OpsRequest metadata: name: ops-restart namespace: demo spec: clusterName: mycluster type: Restart restart: - componentName: redis EOF
  2. Check the pod and operation status to validate the restarting.

    kubectl get pod -n demo > NAME READY STATUS RESTARTS AGE mycluster-redis-0 3/4 Terminating 0 5m32s kubectl get ops ops-restart -n demo > NAME TYPE CLUSTER STATUS PROGRESS AGE ops-restart Restart mycluster Succeed 1/1 3m26s

    During the restarting process, there are two status types for pods.

    • STATUS=Terminating: it means the cluster restart is in progress.
    • STATUS=Running: it means the cluster has been restarted.
  1. Restart a cluster.

    Configure the values of components and ttlSecondsAfterSucceed and run the command below to restart a specified cluster.

    kbcli cluster restart mycluster --components="redis" --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.
  2. Validate the restart operation.

    Check the cluster status to identify the restart status.

    kbcli cluster list mycluster -n demo > NAME NAMESPACE CLUSTER-DEFINITION VERSION TERMINATION-POLICY STATUS CREATED-TIME mycluster demo redis Delete Running Sep 29,2024 09:46 UTC+0800
    • STATUS=Updating: it means the cluster restart is in progress.
    • STATUS=Running: it means the cluster has been restarted.

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