Sequel postgres connection fails when server run as daemon about daemons HOT 2 CLOSED

Are you using Ruby 2.0 or higher? If so, what may be happening is the code is opening a connection to Pg first, then calling daemonize, then trying to use the connection. In Ruby 2.0+, sockets are close-on-exec by default, which means the connection to Pg is getting closed during the fork.

The simplest solution is to open connections after daemonizing, but you may have to rework some error-reporting code because you probably expect the process to exit 1 on the command line if it cannot talk to Pg.

This doesn't happen with sqlite because it will (re)open a local file handle when it needs to (I think - this would match the symptoms).

from daemons.

You are right. I suspected that, but couldn't quite put my finger on it. Thank you.

from daemons.