[ClusterLabs] Different Times in the Corosync Log?

Eric Robinson eric.robinson at psmnv.com
Wed Aug 22 00:00:51 EDT 2018

> Whoa, I think you win some sort of fubar prize. :-)

It's always nice to feel special. 😉

> AFAIK, any OS-level time or timezone change affects all processes equally. (I
> occasionally deal with cluster logs where the OS time jumped backward or
> forward, and all logs system-wide are equally
> affected.)

Except when you're visiting insane-world, which I seem to be. 

> Some applications have their own timezone setting that can override the
> system default, but pacemaker isn't one of them. It's even more bizarre when
> you consider that the daemons here are the children of the same process
> (pacemakerd), and thus have an identical set of environment variables and so
> forth. (And as Jan pointed out, they appear to have been started within a
> fraction of a second of each other.)
> Apparently there is a dateshift kernel module that can put particular processes
> in different apparent times, but I assume you'd know if you did that on purpose.
> :-) It does occur to me that the module would be a great prank to play on
> someone (especially combined with a cron job that randomly altered the
> configuration).
> If you figure this out, I'd love to hear what it was. Gremlins ...

You'll be the second to know after me!

> On Tue, 2018-08-21 at 11:45 +0200, Jan Pokorný wrote:
> > On 21/08/18 08:43 +0000, Eric Robinson wrote:
> > > > I could guess that the processes run with different timezone
> > > > settings (for whatever reason).
> > >
> > > That would be my guess, too, but I cannot imagine how they ended up
> > > in that condition.
> >
> > Hard to guess, the PIDs indicate the expected state of covering a very
> > short interval sequentially (i.e. no intermittent failure recovered
> > with a restart of lrmd, AFAICT).  In case it can have any bearing, how
> > do you start pacemaker -- systemd, initscript, as a corosync plugin,
> > something else?
> --
> Ken Gaillot <kgaillot at redhat.com>
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