Hi @jonathon,

If that happens again, could you show me the results of the command linstor n l (listing the nodes and their status) along with the version of each node?

When restarting the controller, did you do it with a systemctl restart linstor-controller or with a systemctl stop linstor-controller, letting drbd-reactor elect a new node?

You mentioned updating all of your nodes but you also mentioned rebooting only one node, is this correct? Depending on the version you were before the update it's possible that you got a version mismatch between your nodes (the satellites of each node + the controller needing to be rebooted so that they all get to the same version). The node appearing offline is due to a bug when updating from < linstor-server v1.32.0 to >= linstor-server v1.32.0 which makes the node with a different version appear as offline (the auth error is a symptom of that).