Another option would be adding a boot time script which uses ntpdate (or something) to force an immediate sync with your timeservers before ntpd starts - this is actually suggested in ntpdate's man page! Rich On 15/05/2019 13:00, Marco Stuurman wrote: > Hi Yenya, > > You could try to synchronize the system clock to the hardware clock > before rebooting. Also try chrony, it catches up very fast. > > > Kind regards, > > Marco Stuurman > > > Op wo 15 mei 2019 om 13:48 schreef Jan Kasprzak <kas@xxxxxxxxxx > <mailto:kas@xxxxxxxxxx>> > > Hello, Ceph users, > > how do you deal with the "clock skew detected" HEALTH_WARN message? > > I think the internal RTC in most x86 servers does have 1 second resolution > only, but Ceph skew limit is much smaller than that. So every time I reboot > one of my mons (for kernel upgrade or something), I have to wait for several > minutes for the system clock to synchronize over NTP, even though ntpd > has been running before reboot and was started during the system > boot again. > > Thanks, > > -Yenya
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