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@cool-forest-29147 FYI

Good questions. 1. When you import a cluster into Rancher, you run a kubectl command on the downstream cluster which installs the cluster agent. This same command gives the cluster agent a token. The agent then initiates communication with Rancher which is authenticated with that token. You might also pass the token or other advanced option to the cluster agent if you ever want to join a new node to a custom cluster, that is, a cluster with preexisting nodes. (https://rancher.com/docs/rancher/v2.6/en/cluster-provisioning/rke-clusters/custom-nodes/agent-options/) 2. Yes, rancher handles upgrades of the agents.

Ah great! Thanks for the info @tall-school-18125 - much appreciated. 🙂