How to upgrade rke2 on an airgap installation?

You’ll want to get a new binary: https://docs.rke2.io/upgrade/basic_upgrade/#manually-upgrade-rke2-using-the-binary, and then depending on tarball or private registry, you’d want to the do the same steps that you did for install. For example for tarball, download the one for the version you’re upgrading to and store it in the proper location on the airgapped node.

do I have to uninstall the existing version? Or just have to stop the rke2 server and run rke2-killall.sh

nope you shouldn’t have to uninstall. You shouldn’t even have to run the killall script actually, just restart the rke2-server / rke2-agent processes after retrieving the new binary

ok, I will try this