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kubeadm:tldr:3aa9e
This command is used to join a Kubernetes cluster using the kubeadm tool.
The snippet "--token ${token}" is used to specify a token to authenticate and authorize the joining node in the cluster. The token is a unique string that acts as a shared secret between the joining node and the cluster.
The value of the ${token} parameter needs to be replaced with the actual token. The token is typically generated by the control plane node (master) using the kubeadm init command and provided to the joining node to establish trust and join the cluster.
Once the command is executed with the correct token value, the joining node will establish a connection with the cluster's control plane and become a part of the cluster, enabling it to participate in cluster activities and workload distribution.