Postgresql 宿主机如何与Docker同步数据?

Question

我想到以下两个方法：

使用-v参数同步data文件

执行时，没找到data文件，查了postgresql.conf,说在/var/lib/postgresql/9.5/main但是看了文件大小很小，而我的数据很大。

而且我猜测是否可以这样做，直接同步data文件达到数据同步。

通过-p 5432，使Docker在增删改查时都采用宿主机数据库？

执行时 -p参数时，报错5432已被占用, 因为我的其他程序在访问数据库。

我该怎么做，让Docker的数据和主机数据实时同步。

Answer 1

It is recommended to read Docker’s official documentation or introductory tutorial.
There is no concept of synchronization between the container and the host.

Answer 2

Can’t two database instances use the same data file? I’ve never seen a database that can do this....

I don’t understand the second way....

PS: If you really want to [synchronize the database of the host and docker. You can form a cluster... This is the way I can think of...

Answer 3

Method 2:
If you want to use the application in Docker on the host postgres, you can use the public network to directly access the host’s public IP and the corresponding port