--主库
FATAL:semop(id=xxxxx) failed: Identifier removed
FATAL: semctl(xxxxxx,11,SETVAL,0) failed: Invalid argument
--备库
FATAL: semctl(xxxxxx,11,SETVAL,0) failed: Invalid argument
LOG: server process (ThreadId xxxxxx) was terminated by signal1: Hangup
LOG: terminating any other active server processess
LOG: server process (THREADId xxxx) exited withexit code 0
LOG: the server process exits
--原因
在centos7.2中,systemd-logind 服务引入了一个新特性,该新特性是:当一个user 完全退出os之后,remove掉所有的IPC objects。该特性由/etc/systemd/logind.conf,参数文件中RemoveIPC选项来控制。在centos7.2中,RemoveIPC的默认值为yes,因此,当最后一个MogDB/openGauss用户退出时,操作系统会remove 掉这个user的shared memory segments and semaphores