Test farm news
Eric S. Raymond
esr at thyrsus.com
Tue Jun 14 10:32:36 UTC 2016
Gary E. Miller <gem at rellim.com>:
> > I can easily shut down and restart all ntpds - in fact I'll have to in
> > order to get the new configs read.
>
> You need to do more than shutdown ntpd to get back to pre-ntp initial
> conditions. For a real good test you need to set the system clock off
> by maybe a minute, or an hour ,or maybe back to 1970. Remove the drift
> file. Remove the battery from you GPS. And probably restart Linux to
> clera out any save drift.
/me imagines hitting something with a cartoon mallet.
That would be the most extreme test, but for that very reason I doubt it's
that interesting - how often are you going to get hit with all of this at
once? Still...
#!/bin/sh
# Quoth Gary Miller:
# "You need to do more than shutdown ntpd to get back to pre-ntp initial
# conditions. For a real good test you need to set the system clock off
# by maybe a minute, or an hour, or maybe back to 1970. Remove the drift
# file. Remove the battery from you GPS. And probably restart Linux to
# clear out any save drift."
# This does everyting but the battery removal.
#
ssh -c "sudo '(date -s 0; rm /var/lib/ntp/ntp.drift; reboot)'" $1
I shall call it "mallet".
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
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