Good afternoon! Newbie here, I’ve tried to install Lemmy using Ansible (Debian stable) and I ended up having an issue with the Postgresql connectivity (localhost via socket).
The error message I have is:
thread 'main' panicked at 'Error connecting to postgresql:///lemmy?user=lemmy&host=/var/run/postgresql: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: No such file or directory
I have updated my /etc/postgresql/15/main/pg_hba.conf from peer to trust to md5 with no success (rebooting Postresql each time).
My config.hjson is:
database: {
uri: "postgresql:///lemmy?user=lemmy&host=/var/run/postgresql"
password: "{{ postgres\_password }}"
}
Any idea / suggestion? Thanks!
PS: cross-posted on the Matrix.org install support chat
Considering you are getting No such file or directory error then
- Is the path correct?
- Can lemmy access the file? For example if lemmy is running in docker the path/socket does not exist in the container unless specifically instructed…
- Does lemmy process have the required permissions to actually read/access the file?
The path is correct, my investigations directed me towards a docker access issue as suggested by your #2. Looking into it now, thanks!
If lemmy is actually running in docker then you should rather use network instead of socket file - while it should work I would be afraid of docker shenanigans when it comes to mounting a socket file as volume into the container (it should work, but …).
You should be able to access postgres over network on the host thru extra_hosts settings:
extra_hosts:
- "host.docker.internal:host-gateway"
https://stackoverflow.com/a/43541732
postgres://host.docker.internal:5432
My investigations so far have led me to the conclusion that the Ansible install creates multiple docker containers, including one for Lemmy and one for Postgresql. I need now to figure out how inter-container communications work but the host itself is not used.
