(Using https://github.com/LemmyNet/lemmy-ansible)

The ansible-playbook command itself connected to the VPS and completed without any errors or warnings. This is on a completely fresh VPS with Ubuntu Server 22.04.

I created all directories needed in the guide, and the only file I modified was the inventory/hosts file - filling in the username/domain for SSH, domain name, contact email and adding the location of the private key for SSH.

The guide didn’t note any changes to config.hjson I needed to make, so I copied that file as requested but left it with the default content. I’m thinking if I missed something it’s most likely there.

I couldn’t access the web UI and with some investigation I found the dessalines/lemmy:0.17.4 (backend) container is continually restarting, apparently because it can’t reach the database - sudo docker container logs <id> returns the following:

thread 'main' panicked at 'Error connecting to postgres://lemmy:PasswordRedacted@postgres:5432/lemmy', crates/db_schema/src/utils.rs:161:56

I’m not sure what to do at this point, so I would be very appreciative of any help with this issue.

  • fuser@quex.ccEnglish
    1·
    1 year ago

    Ok so I ran a clean install and confirmed that the database objects exist. So that’s definitely the problem. Your database is munted. An interesting thing happened when I re-ran the playbook - I noticed it didn’t rebuild the postgres container. Very suspicious! Let’s try blowing it away completely and re-running your script:

    docker stop lemmyname_postgres_1

    docker rm lemmyname_postgres_1

    now re run the ansible playbook and let’s see if that works.

    • aranym@lemmy.worldOPEnglish
      0·
      1 year ago

      Ran those commands successfully, then the playbook again. Playbook has zero errors or warnings.

      The postgres container was remade… with the same broken database. Went into it with psql like before, did \c lemmy, then \dt - same error - did not find any relations.

        • aranym@lemmy.worldOPEnglish
          1·
          1 year ago

          Wiped the VPS clean, new 22.04 server install.

          Deployed using that installer.

          Exact same issue. The lemmy container cannot reach the database and continually restarts.

          • fuser@quex.ccEnglish
            1·
            1 year ago

            well, that rules out your local system and ansible, at least. It seems like there’s an inability for the docker containers to reach postgres definitely at the install and probably at runtime - can we check this?

            first let’s make sure the postgres container is on the network and has an address:

            sudo docker exec -it <yourinstance>_postgres_1 /bin/sh

            once you’re on the container

            ifconfig

            which should return on the second line: inet addr:172.18.0.4 (or similar ipV4 address)

            exit to return to the host and let’s test connecting from the host :

            nc -zv 172.18.0.4 5432 (use IP from the DB container)

            Ubuntu host should respond something like : Connection to 172.18.0.4 5432 port [tcp/postgresql] succeeded!

            now let’s try the containers

            sudo docker exec -it <yourinstance>_lemmy-ui_1 /bin/sh

            now from that container test connectivity to postgres:

            nc -zv 172.18.0.4 5432 (use IP from the DB container)

            now the other

            sudo docker exec -it <yourinstance>_lemmy_1 /bin/sh

            on the docker containers the nc command should return something like

            172.18.0.4 (172.18.0.4:5432) open

            is that working?