Using AlicloudRedisCluster Custom Resources

WARNING

This is a beta feature available only per request for SAP-internal teams.

The Cloud Manager module offers an AlicloudRedisCluster CustomResourceDefinition (CRD). When you apply an AlicloudRedisCluster custom resource (CR), it creates an Alibaba Cloud ApsaraDB for Redis cloud-native cluster (CE) instance that is reachable within your Kubernetes cluster network.

Prerequisites

You have the Cloud Manager module added.

Steps

This example showcases how to instantiate a Redis cluster, connect a Pod to it, and send a PING command.

1. Create a Redis cluster. The operation may take more than 10 minutes.

   apiVersion: cloud-resources.kyma-project.io/v1beta1
   kind: AlicloudRedisCluster
   metadata:
     name: alicloudrediscluster-simple-example
   spec:
     redisTier: "C3"
     shardCount: 3

2. Wait for the cluster to become ready.

   kubectl wait --for=condition=Ready alicloudrediscluster/alicloudrediscluster-simple-example --timeout=1200s

3. Instantiate the redis-cli Pod.

   apiVersion: v1
   kind: Pod
   metadata:
     name: alicloudrediscluster-simple-example-probe
   spec:
     containers:
     - name: redis-cli
       image: redis:latest
       command: ["/bin/sleep"]
       args: ["999999999999"]
       env:
       - name: HOST
         valueFrom:
           secretKeyRef:
             key: host
             name: alicloudrediscluster-simple-example
       - name: PORT
         valueFrom:
           secretKeyRef:
             key: port
             name: alicloudrediscluster-simple-example
       - name: AUTH_STRING
         valueFrom:
           secretKeyRef:
             key: authString
             name: alicloudrediscluster-simple-example
       volumeMounts:
       - name: mounted
         mountPath: /mnt
     volumes:
     - name: mounted
       secret:
         secretName: alicloudrediscluster-simple-example

4. Execute into the Pod.

   kubectl exec -i -t alicloudrediscluster-simple-example-probe -c redis-cli -- sh -c "clear; (bash || ash || sh)"

5. Run a PING command.

   redis-cli -h $HOST -p $PORT -a $AUTH_STRING --tls --cacert /mnt/CaCert.pem -c PING

   If successful, you receive PONG back from the server.