04/22/2023, 10:01 AM
Hi all. We are running Rancher 2.6.9 and been upgrading our kubernetes clusters to 1.24.x the first cluster we did the upgrade we saw everything being restarted. Most likely due to the docker CRI change. But we saw in the logs the following:
[ERROR] Failed to set up SSH tunneling for host []: Can't retrieve Docker Info: error during connect: Get "<http://%2Fvar%2Frun%2Fdocker.sock/v1.24/info>": can not build dialer to [c-p9cqp:m-2bd0a9380d15]
[ERROR] Removing host [] from node lists
This is very confusing because the server itself was fine. Is there a bug in rancher 2.6.9 or something else that would be causing this?
We only see this happening on the 1st node, all other nodes are fine
We found the issue 🙂 Seems our docker version ( 23.x ) is to new for rancher and is not officially supported yet.
Seems even downgrading Docker this still happens.