Hi,

On Sun, Jul 29, 2012 at 07:19:03AM -0400, Carl R. Friend wrote:
> > When I reload Icinga, it stops doing checks and updating the "old"
> > CGIs data for about a minute while the disk keeps churning away at
> > maximum usage, writing to /var. After about a minute, normal operation
> > resumes.
> >
> > What is Icinga doing in that period? I am curious because it is mildly
> > annoying that one has to wait for this period to happen before one
> > sees the results of a configuration change, and that no checks are
> > done in this time (which is a rather minor issue in my environment).
> 
>     During that period, Icinga is rebuilding the IDO database to
> reflect first the (newly) configured state and then the old state
> of all the hosts and services.

I see. It should log this so that one can immediately know what is
going on there.

>   Since IDO and the event-handler are single-threaded, this must
>   complete before the scheduler finally starts and checks get going
>   again.  In very large instances, this can take several to many
>   minutes.

That does not sound good. Is there a way to mitigate this? In a big
installation, this means being blind for several minutes, or one would
have to run multiple instances of Icinga, take care not to reload both
at once and live with a number of weird issues that need explaining to
end users.

Is a possibility to keep scheduler and event handler running while the
IDO database is rebuilt on the Icinga roadmap?

Greetings
Marc

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