Longhorn CSI on K3s
iscsiadminstalled on the node.
As long as these three prerequisites are met, there should be no further configuration required to use Longhorn on K3s.
This error is due to Longhorn cannot detect where is the root dir setup for Kubelet, so the CSI plugin installation failed.
User can override the root-dir detection by manually setting argument
ps aux | grep k3s and get argument
-d on k3s node.
$ ps uax | grep k3s root 4160 0.0 0.0 51420 3948 pts/0 S+ 00:55 0:00 sudo /usr/local/bin/k3s server --data-dir /opt/test/kubelet root 4161 49.0 4.0 259204 164292 pts/0 Sl+ 00:55 0:04 /usr/local/bin/k3s server --data-dir /opt/test/kubelet
You will find
data-dir in the cmdline of proc
k3s. By default it is not set and
/var/lib/rancher/k3s will be used. Then joining
/agent/kubelet you will get the
root-dir. So the default
root-dir for K3S is
If K3S is using a configuration file, you would need to check the configuration file to locate the