>>> "Brett @Google" <[email protected]> schrieb am 29.04.2016 um 11:50 in Nachricht <CAJiMZ95aOoN7pVAHKDzmamzkQCL9J6xKQoanSQCv=eq3daz...@mail.gmail.com>: > On Thu, Apr 28, 2016 at 6:48 PM, Ulrich Windl < > [email protected]> 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 ?
It should not, but the time could behave odd (jump) immediately after migration. I'll have to investigate this further. > > If so, maybe look for an option to limit backwards updates. > > Cheers > Brett
