In Mailroom 0.0.23, Mailroom Fails Due to Missing Sentinel Password
This comes from Issue gitlab-org/gitlab#421735 (closed)
Summary
In the above issue, users found that after updating to chart 7.2.3 (corresponding to Mailroom 0.0.23) Mailroom pods were restarting due to a method error. This was fixed in Redis 5.0.7, which is now included in Mailroom, fixing the original issue.
This introduced a new problem where the Redis starts sending username and password to Sentinel, causing the issues we are seeing now, as noted by a user in the same issue:
We do have a password configured for redis but not for the sentinel.
This seems to be addressed in PR Introduces explicit auth credentials for sentinels which is now merged, but there is no release tag yet.
The original issue was resolved with the help of @francoisrose.
Edited by Edward Hilgendorf