postgresql的一台linux多台实例怎么解决

        求帮助，怎么在一台linux下安装多个postgresql实例，他们ip相同但端口不同

 Create the clusters

$ initdb -D /path/to/datadb1
$ initdb -D /path/to/datadb2
Run the instances

$ pg_ctl -D /path/to/datadb1 -o "-p 5433" -l /path/to/logdb1 start
$ pg_ctl -D /path/to/datadb2 -o "-p 5434" -l /path/to/logdb2 start
Test streaming

Now you have two instances running on ports 5433 and 5434. Configuration files for them are in data dirs specified by initdb. Tweak them for streaming replication.
Your default installation remains untouched in port 5432.