CentOS 8 and Graylog -UNOFFICIAL-

This is by no means an official statement, just an observation as I’ve seen more and more posts on here leveraging CentOS 8. Also, I am not overly familiar with CentOS 8 and the changes Red Hat has made to RHEL 8, so I’m sure some of you are better equipped to head down this path.

And, while I don’t know Graylog’s official stance on it, I did want to point out a couple of things.

Graylog relies on MongoDB, Java 8 or 11 (starting with 3.x) and Elasticsearch.

Current/Latest system requirements for Graylog are listed here:

MongoDB: 3.6 and 4.0, 4.2 is supported if run in 4.0 mode.
Elasticsearch 5.x and 6.x
Java 8 and 11

With these requirements, there are a couple of things to keep in mind.

MongoDB’s site states that it supports CentOS 8 starting with release 4.2.1

Elasticsearch still doesn’t list support for CentOS 8 on their site.

Graylog does not support Elasticsearch 7, and Elasticsearch 6 is end of maintenance, so the chances of them officially supporting CentOS 8 on Elasticsearch 6 are slim. 6.8 is slated for end of maintenance until November 2020.

So… tl;dr
if you are running CentOS 8, plan your build and realize that you may not get support or find answers to weird issues that pop up.

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