Bitnami Redis on Kubernetes Authentication Failure with Existing Secret

You can achieve it in much simpler way i.e. by running:

$ helm install my-release \  --set auth.password="admin1234" \    bitnami/redis

This will update your "my-release-redis" secret, so when you run:

$ kubectl get secrets my-release-redis -o yaml

you'll see it contains your password, already base64-encoded:

apiVersion: v1data:  redis-password: YWRtaW4xMjM0Cg==kind: Secret...

In order to get your password, you need to run:

export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)

This will set and export REDIS_PASSWORD environment variable containing your redis password.

And then you may run your redis-client pod:

kubectl run --namespace default redis-client --restart='Never'  --env REDIS_PASSWORD=$REDIS_PASSWORD  --image docker.io/bitnami/redis:6.2.4-debian-10-r13 --command -- sleep infinity

which will set REDIS_PASSWORD environment variable within your redis-client pod by assigning to it the value of REDIS_PASSWORD set locally in the previous step.

The issue was about how i encoded password with echo command. There was a newline character at the end of my password. I tried with printf command rather than echo and it created a different result.

printf admin1234 | base64