On 18 February 2016 at 02:47, Peter Eisentraut <pete...@gmx.net> wrote:
> It would be nice if pg_ctl promote supported the -w (wait) option. > > How could pg_ctl determine when the promotion has finished? > > We could query pg_is_in_recovery(), but that would require database > access, which we got rid of in pg_ctl. > > We could check when recovery.conf is gone or recovery.done appears. > This could work, but I think some people are trying to get rid of these > files, so building a feature on that might be a problem? (I think the > latest news on that was that the files might be different in this > hypothetical future but there would still be a file to prevent > re-recovery on restart.) > > Other ideas? > We use a trigger file under the covers, so a promotion complete file seems useful also, but crappy. Perhaps we should have a Server Status file that shows Standby or Master, obviously not updated on crash. -- Simon Riggs http://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
