Re: Shared data dir for multiple postgresql nodes

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On 12/20/18 2:41 AM, Prince Pathria wrote:
Hi,
I'm asking this out of curiosity, if I have 2 postgres nodes on same server,
1. listening on port 5432
2. listening on port 5433

What issue's I might face if I do it like this? Assuming I'm doing this for multimaster approach.

pg_ctl -D /data/postgres -o "-p 5432" -l /var/log/pg1 start
pg_ctl -D /data/postgres -o "-p 5433" -l /var/log/pg2 start

I don't think Postgres will even let you install the second node in the same directory.

Also, you should name the directories /postgres/data Postgres expects to be installed in a directory named "data".

In fact, if you install Postgres from postgresql.org packages, it'll install it in "X.Y/data", where X is the major version number, and Y is the minor version number.


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