I’m relatively new to Graylog and have just upgraded to 4.0.9 which went without issue but I now want to upgrade Elasticsearch v6.8 and all the documentation says that anything after 7.1 is unsupported.
I’ve followed the Elasticsearch upgrade doc but this will take it to the latest version 7.15.
How can I specifically choose a version 7.1 as this is the latest supported version?
So a point of clarification: 7.1 is supported, anything after 7.10 is not. And to install a singular version of Elasticsearch you can either directly download the package from Elasticsearch, or use one of the repositories and specify the version with either yum or apt, depending on your distro.
I will note though, PINYOURVERSION. RHEL and Debian based systems both have ways to pin versions through either a config file or using something like apt-mark hold. If you don’t want to end up using a version that’s not currently supported by Graylog, pinning will save you a lot of headache.