Authentication of [elastic] was terminated by realm [reserved]

Hello, I’ve moved a Zammad Cloud instance to its own Docker container.

PSQL and files are in there. However, I’m having trouble with ElasticSearch not allowing me to search.

  • Used Zammad version: 6.5
  • Used Zammad installation type: docker-compose
  • Operating system: Ubuntu
  • Browser + version: FF

Expected behavior:

Search in Backend

Actual behavior:

Logs in Elastic Image:
[2025-06-23T15:35:03,856][INFO ][o.e.x.s.a.RealmsAuthenticator] [d936c4e2b00d] Authentication of [elastic] was terminated by realm [reserved] - failed to authenticate user [elastic]

[2025-06-23T15:35:03,970][INFO ][o.e.x.s.a.RealmsAuthenticator] [d936c4e2b00d] Authentication of [elastic] was terminated by realm [reserved] - failed to authenticate user [elastic]

Steps to reproduce the behavior:

I’ve set it up in Docker several times before, and everything always worked.

Now, at the end, I just loaded the files and the PSQL as per the instructions. But now the ES is causing problems.

Can anyone tell me more about this?

This Doku: selfhosted-apps-docker/zammad at master · DoTheEvo/selfhosted-apps-docker · GitHub

Did you adjust the password for user elastic?