How to uninstall old versions of postgres?

Installation
1

I’ve noticed that my server has several versions of postgres installed:

grep -H '^port' /etc/postgresql/*/main/postgresql.conf
/etc/postgresql/10/main/postgresql.conf:port = 5432				# (change requires restart)
/etc/postgresql/12/main/postgresql.conf:port = 5434				# (change requires restart)
/etc/postgresql/13/main/postgresql.conf:port = 5435				# (change requires restart)

I think this might be causing problems when starting/stopping the postgresql service via service postgresql restart.

I have two questions:

  1. Which one does the latest version of Discourse use?
  2. How can I safely uninstall the other versions?
1 Like
2

Sorry but what does this have to do with Discourse? Discourse ships with PostgreSQL inside the container image, so we are not involved with any software installed on your server.

➜  discoursesmall git:(6a42acbf) docker run --rm -it discourse/base:2.0.20201125-2246
root@f89c549fdef1:/# ls /etc/postgresql
12

By default, none since it uses the container one. If talking only about versions, we are currently using 12 and will migrate to 13 very soon.

2 Likes
3

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