On Wed, May 11, 2016 at 11:17:54AM +0200, Niels Kristian Schjødt wrote: > We have an ssh connection running from one server to our > postgresql database on another server. Some times we > experience that the ssh tunnel does not work anymore and > needs to be restarted, even though we use the autossh > package. I would like to write a script that “pings” > postgresql on the specified port, to check if the connection > goes through. I have tried with netcat, but it does not > really check if postgresql is in the other end of the tunnel, > it only check if there is as service (the tunnel) listing on > the port on the local machine. Is there another way of > pinging the port, to see if postgresql is alive at the other > end? If possible, I would like to NOT actually establishing a > connection to postgresql like if i used psql -c “select 1;”, > to avoid connection overhead. This http://www.postgresql.org/docs/devel/static/libpq-connect.html talks about ping functionality. Maybe you can use a tiny custom piece of code ? Karsten -- GPG key ID E4071346 @ eu.pool.sks-keyservers.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
