| Re: [chrony-users] pool DNS round-robin refresh |
[ Thread Index |
Date Index
| More chrony.tuxfamily.org/chrony-users Archives
]
On Wed, Jul 03, 2019 at 06:56:49PM +0200, Youssef Ghorbal wrote:
> MS Name/IP address Stratum Poll Reach LastRx Last sample
> ===============================================================================
> ^- ntp03 2 8 377 64 +248us[ +248us] +/- 10ms
> ^* ntp01 2 8 377 158 +17us[ +28us] +/- 1633us
> ^- ntp02 2 8 377 36 -36us[ -36us] +/- 12ms
> ^? ntp04 2 10 0 31h -7955us[ -248us] +/- 14ms
>
> (ntp04 is dead since 48h now and DNS RR was updated since, DNS
> resolver cache was correctly cleard)
>
> In what case exactly (and when), does chrony is supposed to refresh
> the list of IPs in a defined pool ?
Immediately when it becomes unreachable, or falseticker, but there is
a rate limit on how often it can query DNS (three times per hour or
so).
One thing that may not be obvious. chronyd will never drop a source.
It will only replace it with a new one when available. Are you sure
the pool name resolves to the new IP address?
If you compile chronyd with --enable-debug and run it with -d -d, you
should see when it's trying to replace the server and what addresses
the name was resolved to.
--
Miroslav Lichvar
--
To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx.