Executed when: Adding nodes to Entrust PKI Hub.

Prints the joining token for other nodes to join the cluster.

clusterctl node join-token

For example:

$ sudo clusterctl node join-token
NODE JOIN TOKEN
7dc820922681be2197736246ef32784a530186c3e58e07ac671768de690c3ca0

You must run this command in a node already added to Entrust PKI Hub.