Start error: TiDB port is not up

[zyh-hust]

I run the command ansible-playbook start.yml failed. I have changed the port number，but I still get an error. And this port(38710) is not occupied.

TASK [wait until the TiDB port is up] ***********************************************************************************
fatal: [tidb1]: FAILED! => {"changed": false, "elapsed": 300, "msg": "the TiDB port 38710 is not up"}
to retry, use: --limit @/home/zyh/tidb-ansible/retry_files/start.retry

PLAY RECAP **************************************************************************************************************
alert_server : ok=5 changed=0 unreachable=0 failed=0
grafana_server : ok=3 changed=0 unreachable=0 failed=0
localhost : ok=7 changed=4 unreachable=0 failed=0
moni_server : ok=9 changed=0 unreachable=0 failed=0
monitor_server : ok=9 changed=0 unreachable=0 failed=0
pd1 : ok=7 changed=0 unreachable=0 failed=0
tidb1 : ok=4 changed=0 unreachable=0 failed=1
tikv1 : ok=8 changed=0 unreachable=0 failed=0

ERROR MESSAGE SUMMARY ***************************************************************************************************
[tidb1]: Ansible FAILED! => playbook: start.yml; TASK: wait until the TiDB port is up; message: {"changed": false, "elapsed": 300, "msg": "the TiDB port 38710 is not up"}