8000TCP ports are exposed. We used to serve the UI and the Portainer API from port
9000, but we extended the API to allow the remote agents to poll for instructions. Port
8000is a TLS tunnel server used to create a secure tunnel between the agent and the Portainer instance. More about that soon.
8000is the default).
abc123. Do you need me right now?”. Portainer checks its database to ensure the Edge UUID and the join token match. If no UUID can be associated with the join token provided, Portainer will associate the UUID provided by the agent to the endpoint’s join token.
8000to the Portainer instance. If a remote endpoint is a swarm cluster, every node will run an instance of the agent (and every instance will poll Portainer). The 'you are required' flag causes the first agent in the cluster to establish the tunnel. Once in place, Portainer can then query the agent where the tunnel is open. If the tunnel closes for any reason, the agent will immediately re-establish it.