On Thu, Jun 2, 2016 at 7:39 PM, Michael Paquier <michael.paqu...@gmail.com> wrote:
> On Fri, Jun 3, 2016 at 8:30 AM, Dennis <denn...@visi.com> wrote: > > Is it possible to execute command in on system the is hosting postgresql > > remotely using psql or other mechanism? I know I can use \! in psql but > > that executes the commands on the host where I am running psql from. > Also, > > is it possible for a postgres login/user to stop or restart a running > > postgres instance from in side psql or similar client. e.g. psql -c > “pg_ctl > > stop -D some_data_dir” > > Not directly. You could implement an extension that wraps a function > available at SQL level taking some actions, however for the restart > the error handling is tricky if you just have control via psql. How > could you start a node that has been stopped during a restart but > could not boot up. Take the example of an incorrect parameter value > that has been added when the node was up via ALTER SYSTEM... > I was focused on admin task due to the pg_ctl (not sure you'd want to run that via psql...) but if you have shell script applications you want to run you could consider: https://github.com/petere/plsh I used it a while back successfully but have since gone a more conventional route by embedding psql in shell and not the other way around. David J.
