[bitnami/redis] Can't have master-slave with 1 master and 1 slave with Sentinel

[snird]

Name and Version

bitnami/redis 20.5.0

What architecture are you using?

amd64

What steps will reproduce the bug?

A replica set up with 2 replicas may work but is unsafe due to sentinels being attached to each instance (and thus, having only 2 sentinels).

So having 2 replicas means 2 sentinels - which is not enough.
3 sentinels is a required minimum for quorum.

There is no way currently to detach the sentinels from the replicas, but they theoretically should be completely separated.
As, for example, if you want to have 4 replicas - that won't work either because quorums require 3/5/7... voters to work properly.

What do you see instead?

Sentinels amount set separately, and live in their own pods.
If a pod of a Redis instance has gone bad - we still need the sentinel to vote on the master. Detaching it is safe anyway.

[carrodher]

Thank you for bringing this issue to our attention. We appreciate your involvement! If you're interested in contributing a solution, we welcome you to create a pull request. The Bitnami team is excited to review your submission and offer feedback. You can find the contributing guidelines here.

Your contribution will greatly benefit the community. Feel free to reach out if you have any questions or need assistance.

[github-actions]

This Issue has been automatically marked as "stale" because it has not had recent activity (for 15 days). It will be closed if no further activity occurs. Thanks for the feedback.

[github-actions]

Due to the lack of activity in the last 5 days since it was marked as "stale", we proceed to close this Issue. Do not hesitate to reopen it later if necessary.