Re: [chrony-users] check_ntp_peer with Chrony

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On Thu, Jan 18, 2018 at 05:25:02PM +0100, Daniele Palumbo wrote:
> I would like to monitor the status of the ntp sources, therefore something like from chronyc sources, i guess.
> # chronyc sources
> 210 Number of sources = 2
> MS Name/IP address         Stratum Poll Reach LastRx Last sample
> ===============================================================================
> ^+               2   6   377     0  -1925us[-1925us] +/-   21ms
> ^*               2   7   377     7  +1562us[+1544us] +/-   16ms
> Given also the RFC in draft
> That is not  specific to ntpd (but write some comments specific for ntpd),
> There may be some interest to developing mode 6 support?

There is currently no interest in implementing the mode 6 protocol
as it allows traffic amplification, which is a security issue.

The protocol is described in draft-ietf-ntp-mode-6-cmds, but it has
informational status and AFAIK it's not intended for new

That does not mean I'd not consider replacing the chronyc protocol
with a more standard protocol. I'm not sure what that would be yet.

Miroslav Lichvar

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