2013/1/26 Phil Sorber <p...@omniti.com>: > On Sat, Jan 26, 2013 at 12:39 PM, Pavel Stehule <pavel.steh...@gmail.com> > wrote: >> 2013/1/26 Phil Sorber <p...@omniti.com>: >>> On Sat, Jan 26, 2013 at 11:53 AM, Pavel Stehule <pavel.steh...@gmail.com> >>> wrote: >>>> 2013/1/26 Phil Sorber <p...@omniti.com>: >>>>> On Sat, Jan 26, 2013 at 4:02 AM, Pavel Stehule <pavel.steh...@gmail.com> >>>>> wrote: >>>>>> Hello >>>>>> >>>>>> We now haw to solve small puppet issue, because our puppets try to >>>>>> start server too early, when old instance live still. >>>>>> >>>>>> Maybe some new parameter - is_done can be useful. >>>>>> >>>>> >>>>> What about something like: >>>>> pg_isready; while [ $? -ne 2 ]; do sleep 1; pg_isready; done >>>> >>>> it is not enough - server is done in a moment, where can be started >>>> again - or when we can do safe copy of database data directory. >>>> >>> >>> I guess i am not completely understanding the case you are trying to >>> solve. Can you explain a bit further? >> >> We use puppets and due some simplification we cannot to use reload >> when configuration is changed. Our puppets has not enough intelligence >> to understand when is reload enough and when is restart necessary. So >> any change to configuration require restarting postgres. I don't know >> why "service restart" are not used. I believe so our puppet guru know >> it. It just do sequence STOP:START Now puppets are "smart" and able >> to wait for time, when server is ready. But there are missing simple >> test if server is really done and I see a error messages related to >> too early try to start. So some important feature can be verification >> so server is really done. >> >> We can do it with test on pid file now - and probably we will use it. >> But I see so this is similar use case (in opposite direction) >> > > I guess I am still not clear why you can't do: > > stop_pg_via_puppet > pg_isready > while [ $? -ne 2 ] > do > sleep 1 > pg_isready > done > do_post_stop_things > start_pg_via_puppet >
because ! pg_isready <> pg_isdone >> Regards >> >> Pavel >> >>> >>>> Regards >>>> >>>> Pavel >>>> >>>> >>>> >>>>> >>>>> Perhaps with a counter to break out of the loop after some number of >>>>> attempts. >>>>> >>>>>> Regards >>>>>> >>>>>> Pavel >>>>>> -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
