问题： ocp-express失败（服务器C），导致OceanBase 集群挂掉
安装的软件是：obd图形化界面部署OceanBase 集群(服务器A,服务器B,服务器C)
Traceback (most recent call last):
File “service/api/v1/components.py”, line 66, in list_components
File “service/handler/component_handler.py”, line 111, in list_components
File “service/handler/component_handler.py”, line 53, in __get_all_components
File “_stdio.py”, line 1046, in getattribute
File “_mirror.py”, line 956, in local_mirror
File “_mirror.py”, line 951, in _lock
File “_lock.py”, line 266, in mirror_and_repo_ex_lock
File “_lock.py”, line 257, in _ex_lock
File “_lock.py”, line 249, in _lock
File “_lock.py”, line 180, in lock
File “_lock.py”, line 85, in ex_lock
_errno.LockError: [Errno 11] Resource temporarily unavailable
