I tried to join the cluster, and the error was reported as follows:
Error joining the node to the Raft cluster: Error making API request.
URL: POST http://127.0.0.1:8200/v1/sys/storage/raft/join
Code: 500. Errors:
* leader API address and auto-join metadata must be unset when raft is used exclusively for HA
root@debian:~#
When I annotated api_addr, an error was reported and I had to ask for this