Deploying Redis Cluster

This section provides instructions for deploying a Redis Cluster and Redis Commander on OpenShift using Devtron.

Procedure

  1. In the Devtron Chart Store, select the latest version of the redis-cluster chart.
  2. Configure the chart and select the option to deploy it.
  3. Remove the default YAML content in the configuration section. Add the following values, replacing passwords, host names, service-account names, and route hosts with values for your environment, and deploy the chart. 
    global:
  imageRegistry: ""
  imagePullSecrets: []
  storageClass: ""
  compatibility:
    openshift:
      adaptSecurityContext: auto

extraDeploy:
  - apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: redis-commander
    spec:
      replicas: 1
      selector:
        matchLabels:
          app: redis-commander
      template:
        metadata:
          labels:
            app: redis-commander
        spec:
          containers:
            - name: redis-commander
              image: rediscommander/redis-commander:latest
              env:
                - name: REDIS_HOSTS
                  value: "cluster:<redis-cluster-service>:6379:0:<redis-password>"
                - name: IS_CLUSTER
                  value: "true"
              ports:
                - containerPort: 8081
  - apiVersion: v1
    kind: Service
    metadata:
      name: redis-commander-svc
    spec:
      type: ClusterIP
      ports:
        - port: 80
          targetPort: 8081
      selector:
        app: redis-commander
  - apiVersion: route.openshift.io/v1
    kind: Route
    metadata:
      name: redis-ui-route
    spec:
      host: <redis-route-host>
      to:
        kind: Service
        name: redis-commander-svc
      port:
        targetPort: 8081
      tls:
        termination: edge
        insecureEdgeTerminationPolicy: Redirect

image:
  registry: docker.io
  repository: bitnamilegacy/redis-cluster
  tag: 8.2.1-debian-12-r0

volumePermissions:
  enabled: false

podSecurityContext:
  enabled: true
  fsGroup: null

containerSecurityContext:
  enabled: true
  runAsUser: null
  runAsNonRoot: true
  readOnlyRootFilesystem: false
  allowPrivilegeEscalation: false
  capabilities:
    drop: ["ALL"]

serviceAccount:
  create: false
  name: <service-account-name>

usePassword: true
password: "<redis-password>"

cluster:
  init: true
  nodes: 6
  replicas: 1
  externalAccess:
    enabled: false

persistence:
  enabled: true
  size: 8Gi

redis:
  useAOFPersistence: "yes"
  resourcesPreset: "medium"
  readinessProbe:
    enabled: true
    initialDelaySeconds: 30
    periodSeconds: 10
    timeoutSeconds: 5
    failureThreshold: 15
    successThreshold: 1
  extraEnvVars:
    - name: REDIS_CLUSTER_DYNAMIC_IPS
      value: "yes"
    - name: REDIS_DNS_RETRIES
      value: "120"
    - name: REDIS_CLUSTER_ANNOUNCE_IP
      valueFrom:
        fieldRef:
          fieldPath: status.podIP
  4. Validate the deployment by checking the Redis and Redis Commander pods and services. 
    oc get pods -n cdp-dev-app
oc get svc -n cdp-dev-app
oc get route redis-ui-route -n cdp-dev-app