the fleet “continued to follow the true primary”

04:47 Apr 27, 2018 

我前面说的“追随”是指其它（用户）服务器继续从真正的数据库主服务器那里读取/写入数据。

04:15 Apr 27, 2018 

At around 01:26 UTC, a database failover was accidentally performed leading to a split-brain problem. Fortunately, the fleet continued to follow the true primary.
We shut down postgres-01 since it was the rogue primary. In our investigation, both postgres-03 and postgres-04 were trying to follow postgres-01. As such, we are rebuilding replication on postgres-03 as I write this issue and then postgres-04 when it is finished.
https://gitlab.com/gitlab-com/infrastructure/issues/4106
感觉这个follow不好理解。