Mogdb 3.0 how to add a standby database in the environment of one active and one standby

Excuse me, in the environment of one active and one standby that has been running , How to add a standby database , Whether the main warehouse can be maintained without shutdown ？

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Take the answer 1：

https://docs.mogdb.io/zh/mogdb/v3.0/13-gs_expansion#%E5%8F%82%E6%95%B0%E8%AF%B4%E6%98%8E

Look at this.

The main warehouse does not need to be shut down

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Other answers 1：

https://docs.mogdb.io/zh/mogdb/v3.0/13-gs_expansion#%E5%8F%82%E6%95%B0%E8%AF%B4%E6%98%8E

Look at this.

The main warehouse does not need to be shut down

Other answers 2：

yes mogdb database 3.0

Other answers 3：

You can also refer to this manual addition method ：
https://docs.mogdb.io/zh/mogdb/v3.0/manual-installation