Question 292661 in Docker Question posted in
The official documentation can be found here.

Linux host can't connect to docker container via localhost

I run the following to start a postgres server container:

docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d postgres

What I was expecting was to use dbeaver to connect via localhost:5432 with postgres and mysecretpassword, but I keep getting the following error in dbeaver, indicating my credentials are wrong:

Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
  Connection refused
  Connection refused

Am I pointed at the right IP / port? -p doesn’t help and neither does –add-host with host.docker.internal

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    Very simple fix for me, just replace localhost with:

    172.17.0.2

    localhost = 172.17.0.1, so no wonder that didn't work.

    How I solved it:

    I ran the following command to inspect the container details. Under Networks:bridge:IPAddress: I found the 172.17.0.2 address.

    docker inspect {{CONTAINER_ID_GOES_HERE}}

  2. 0

    If you just run docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d postgres, the container is started but no ports are exposed. Add the parameter -p 5432:5432 to forward your local port 5432 to port 5432 of the docker container:

    docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -d postgres

    Now you can connect to postgres on localhost:5432. Using an ip address from docker inspect is not recommended because this ip address might change, for example when the container is recreated.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search