[hobbit] ntp check expansion thoughts
lebarber at gmail.com
Tue Jan 24 17:22:11 CET 2006
There's an ntp script available on deadcat that I believe does what you
require (warning, html coming up):
Tue Jan 24 10:19:52 CST 2006 Clock is synchronized
(ppm)Stratum[image: green] 0.4850.126[image: green] -130.957[image:
green] 0.002[image: green] 2
(ms)Status220.127.116.11CDMA[image: green] 13770.8920.094[image: green]
0.48514.847[image: green] sel_sys.peerLOCAL(0)LOCAL(0)[image: green]
103770.0000.008[image: green] 0.0000.948[image: clear] unknown
NTP version: ntpd 4.1.2 at 1.892
On 1/24/06, Tracy Di Marco White <gendalia at iastate.edu> wrote:
> We're a kerberos based shop, which means everything authenticating
> to kerberos needs to be within 5 minutes of our kerberos server's
> clock. We recently had problems with a few important servers having
> severe time keeping problems, as well as two of our time servers not
> keeping sync because of multiprocessor issues. For a lot of our
> servers it'd be nice to warn if time is more than a minute or two
> out from our reference clock on the kerberos servers, and go red at
> four or five minutes out. But it'd also be nice to have a warning
> if our central time servers are having problems keeping sync, or
> having other problems (I'm not intimately familiar with ntp, so I'm
> not sure what problems those could be).
> I think the ntp check right now only checks that ntp is running.
> It would be nice to check that there's a valid sys.peer, and maybe
> some number of acceptable candidates, maybe that the offset and
> jitter are within some reasonable parameters for the peers/servers.
> I'm mostly just thinking about implementing something like this
> at the moment, maybe someone already has this, or maybe there's
> a better way to think about this, so I'd appreciate input on it.
> Tracy J. Di Marco White
> Information Technology Services
> Iowa State University
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