二重化主备切换过程中Postgresql的状态变化
在使用pacemaker部署的主备服务器环境中,由于使用到了postgresql,对其复杂的状态变化做了如下整理。
1.pgsql-status
■PRI : running as Primary(Master)
■HS : running as Hot Standby(Slave)
HS:alone : running as Hot Standby,not connected to Primary
HS:async : running as Hot Standby in Asynchronous replication mode
HS:sync : running as Hot Standby in Synchronous replication mode
■STOP : stopped