On Dec 24, 2012 at 03:26:02PM +0000, Edward Ned Harvey (lopser) wrote: <snip />
> Without any special requirements, why don't you just run > software? If everything in the network is in-sync with each > other, +/- a couple of seconds, is that good enough? Like I > said, this is what I do - I haven't yet worked anywhere that had > a stronger requirement. VM host is configured to follow > north-america.pool.ntp.org, and guest VM is configured to sync > with host, and guest VM is configured as NTP server for the LAN. > It's certainly good enough for kerberos and NTP and rsync and > everything else we do internally... This isn't a common use case AFAIKT, but I ran into an issue recently with four VMWare ESX4 guests not being closely enough synced. In an "at" job, I stopped ntpd, ran ntpdate against a GPS clock appliance, restarted ntpd, *then* started a packet capture. By the end of the capture (only a few minutes), the clocks were skewed up to 800usec, making it difficult to follow the sequence of events in the merged pcap. +/- a few seconds would have made it even more challenging. -- Charles _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
