Cannot connect to Redis

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Db2® Data Management Console fails to connect to Redis server.

Symptoms

Redis cannot connect to Db2 Data Management Console.

Causes

The issue is cause due to a known issue on s390x architecture for Redis 1.6.3.

Resolving the problem

To resolve the problem, upgrade Redis from 1.6.3 to 1.6.4.

  1. Delete the Db2 Data Management Console CR, Redis CSV, and subscription.
    oc project <project-namespace>
oc delete dmc data-management-console
oc delete csv ibm-cloud-databases-redis.v1.6.3 -n ibm-common-services
oc delete sub redis-operator -n ibm-common-services
  2. Edit the Redis operator catalog source.
    oc edit catalogsource ibm-cloud-databases-redis-operator-catalog -n openshift-marketplace -o yaml, replace image to icr.io/cpopen/ibm-cloud-databases-redis-catalog@sha256:708f4ba1545b2c7476165064f28b0c481b2a3077ef2208f3d24fd02941f9d6d0
  3. Provision a new Db2 Data Management Console instance.
    cat << EOF | oc apply -f -
apiVersion: dmc.databases.ibm.com/v1
kind: Dmc
metadata:
  annotations:
    ansible.operator-sdk/reconcile-period: 30s
    ansible.sdk.operatorframework.io/verbosity: "4"
  name: data-management-console
  namespace: <project-namespace>
spec:
  description: IBM Db2 Data Management Console
  license:
    accept: true
    license: Standard
  scaleConfig: small
  storageClass: nfs-client
  storageSize: 10Gi
  total_resources:
    limits:
      cpu: ""
      memory: ""
  version: 4.6.2
EOF
  4. Verify whether Redis CSV is updated to version 1.6.4.
    # oc get csv -n ibm-common-services
NAME                                           DISPLAY                                                  VERSION   REPLACES                           PHASE
ibm-cloud-databases-redis.v1.6.4               IBM Operator for Redis                                   1.6.4     ibm-cloud-databases-redis.v1.6.3   Succeeded
ibm-common-service-operator.v3.23.0            IBM Cloud Pak foundational services                      3.23.0                                       Succeeded
...
  5. Wait for a few minutes. Verify whether the Redis pods are started.