running two docker postgres service

Question

I'm trying to run two postgres database with Docker service. I know they can't run on the same time, so I would like to change the port (not the -p 5433: 5432)

here's my script to start the docker service:

docker service create --name account-db --network account -e POSTGRES_PASSWORD=secret_password -p 5432:5432 -d --mount type=volume,source=account,target=/var/lib/postgresql/data postgres:latest

so if I want to run one on 5432 and another on 5433, how should I achieve that? thanks for any input / suggestion

Vamsi · Accepted Answer · 2020-08-26 18:04:40Z

7

-p 5432:5432

This is the port mapping for the container. So for the first service, it should be

-p 5432:5432

And for the second service it should be

-p 5433:5432

The syntax is -p [port of the machine] : [port of the container]

edited Aug 26, 2020 at 18:04

answered Feb 9, 2018 at 9:34

Vamsi

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2 Comments

Jim Over a year ago

are they not going to fight over the same tcp?

Vamsi Over a year ago

No. The port of the machine is what involves in the conflict. As long as you make it different. It works.

Shahriar · Accepted Answer · 2018-02-09 11:56:49Z

2

@vamsi is right.

But when you are using a node port xxxx, you need to make sure that xxxx is available.

-p xxxx:5432

If you want to assign a free port automatically, use this

-p :5432

Leave node port empty :5432

answered Feb 9, 2018 at 11:56

Shahriar

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