greenplum激活standby和恢复master原有角色

定义：server1=(master) server2=(standby) Active standby server when master down. gpactivatestandby -d /data/master/gpseg-1 -f (on server2) Change server1 as standby . gpinitstandby -s server1 (on server2) gpactivatestandby -d /data/master/g

定义：server1=(master) server2=(standby) Active standby server when master down.
gpactivatestandby -d /data/master/gpseg-1 -f (on server2) Change server1 as standby .
gpinitstandby -s server1 (on server2)
gpactivatestandby -d /data/master/gpseg-1 -f (on server1) restore server1 as master
gpstop -m (on server2)
gpactivatestandby -d /data/master/gpseg-1 -f (on server1) restore server2 as standby
gpinitstandby -s server2 (on server1)


MARK: pay attention to store or remove /data/master/gpseg-1 when do gpactivatestandby operation.

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