Changing Cassandra and OpenSearch hostname

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Is it possible to change the hostname of the servers running Cassandra and OpenSearch on Ubuntu?

Other than modifying the hostname on the OS level, are there any settings/procedures on application level to be taken care of?

Laszlo Szabados [DevOps Enabler] Selected answer as best 21st June 2023

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Hi Laszlo,

If you are using the IP addresses everywhere and not hostnames, then there should be no problem changing the hostname of the server. I would still recommend if you are doing these types of actions, to always first do it on your staging/demo environment before doing this on a production environment.

Laszlo Szabados [DevOps Enabler] Selected answer as best 21st June 2023