Docker image: admin password can't be changed after the first start about graylog2-images

[brandongalbraith]

You should be specifying the admin password as an environment variable at container launch time with an environment variable parameter:

-e GRAYLOG_PASSWORD=<password>

If you plan on perisiting data (you should if you're not testing!), follow the instructions below:
https://github.com/Graylog2/graylog2-images/tree/master/docker#persist-data

[tzz]

I know about the startup parameter. I want to change the admin password after the fact. For instance, because it's easily visible in the process list and you can also grab it with docker inspect.

I am persisting data, yes. My point about restarting is that it takes the input offline during the restart period, potentially losing data. If I just restart graylog-web then the GELF input will remain online. I hope that explains it better.

[mariussturm]

The admin password is stored in the configuration file of the server. So in any case you have to restart the server. However to change it in a running container you could do graylog-ctl set-admin-password SuPerSecret followed by graylog-ctl reconfigure. The reconfigure command will write the new config file and restart the server.

[tzz]

Aha, perfect! reconfigure did not require me to do a restart either, Chef took care of it I guess. Thank you so much; I think this would be helpful in the Docker image docs but from my side I'm all set.