On Thu, Apr 28, 2016 at 6:48 PM, Ulrich Windl <
Ulrich.Windl(a)rz.uni-regensburg.de> wrote:
Hi!
I'm running a NRPE monitor that monitors openLDAP. To compute delta
values, the NRPE plugin stores the "dn: cn=Uptime,cn=Time,cn=Monitor"
reported by openLDAP to compare it with the current value (to build the
time difference). If the time difference is negative, the plugin reports a
"server restart" event.
So far, so good...
However, very rarely (once every few weeks) a false server restart is
reported. Viewing the historic logs, I can only assume that openLDAP
reports a bad uptime value now and then. Could this be?
If uptime is a calculation based on the system clock, is there some process
such as ntpd or vmware tools, periodically updating the system clock,
sometimes backwards ?
If so, maybe look for an option to limit backwards updates.
Cheers
Brett