How do I rotate the erlang cookie on a production cluster?

[dmitry-okun]

I am looking to rotate the erlang cookie without down time. I cant find anywhere in the documentation on how to do it. Has anyone done it before?

[lukebakken]

https://www.erlang.org/doc/man/erlang#set_cookie-2

rabbitmqctl eval "erlang:set_cookie('NEWCOOKIEATOM')."

You would have to also ensure that the local cookie file has the updated value. Note that I have never tried this so you're on your own!