What could be the reason if I cannot see my backend in a fresh setup for StarRocks on the same machine?

# starting FE with FQDN
fe/bin/start_fe.sh --host_type FQDN

# starting BE
be/bin/start_be.sh

MySQL [(none)]> show backends;
Empty set (0.002 sec)

MySQL [(none)]> show frontends \G;
*************************** 1. row ***************************
               Id: 1
             Name: ..
               IP: ..
      EditLogPort: 9010
         HttpPort: 8030
        QueryPort: 9030
          RpcPort: 9020
             Role: LEADER
        ClusterId: 418754004
             Join: true
            Alive: true
ReplayedJournalId: 209
    LastHeartbeat: 2025-11-11 16:26:50
         IsHelper: true
           ErrMsg: 
        StartTime: 2025-11-11 16:15:40
          Version: 4.0.0-dccb665
1 row in set (0.015 sec)

BE

must be added into cluster first.

ALTER SYSTEM ADD BACKEND "<be_host>:<heartbeat_service_port>"[, ...]

https://docs.starrocks.io/docs/sql-reference/sql-statements/cluster-management/nodes_processes/ALTER_SYSTEM/#be

Thank you. I did miss this step and it is mentioned in the doc https://docs.starrocks.io/docs/deployment/deploy_manually/#step-3-set-up-the-cluster