Re: Cannot connect to postgresql-11 from another machine after boot

On 2/13/20 7:54 PM, Jason Swails wrote:
> Hi,
>
> I've been struggling with a strange (to me) issue for awhile.  I have
> PostgreSQL 11.6 installed on my Ubuntu machine with the data directory
> living on a different drive than the one mounted on /. I was observing
> the same behavior when my machine was running Gentoo a month ago.
>
> The problem is that after my machine boots, I'm unable to connect to the
> server from anywhere except localhost.  Running a simple "systemctl
> restart postgresql" fixes the problem and allows me to connect from
> anywhere on my LAN.  Here is an example of this behavior:
>
> swails(at)client ~ $ psql -U postgres -h 192.168.1.3
> psql: could not connect to server: Connection refused
> Is the server running on host "192.168.1.3" and accepting
> TCP/IP connections on port 5432?
>
> swails(at)client ~ $ ssh 192.168.1.3
>
> swails(at)server ~ $ sudo systemctl restart postgresql
>
> swails(at)server ~ $ logout
> Connection to 192.168.1.3 closed.
>
> swails(at)client ~ $ psql -U postgres -h 192.168.1.3
> Password for user postgres:
>
> So the first connection attempt fails.  But when I restart the service
> and try again (doing nothing else in between), the connection attempt
> succeeds.  My workaround has been to simply restart the service every
> time my machine reboots, but I'd really like to have a more reliable
> startup.
>
> Any ideas how to start hunting down the root cause?  I think this
> started happening after I moved the data directory to another drive.

I would start by looking in the system log to see what it records when
the service tries to start on reboot.

>
> Thanks,
> Jason
>
> --
> Jason M. Swails

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com