Not strictly pool related but I;m hoping the knowledgable folk here may have some ideas… I operate two public servers (both are in the pool). One runs NTPD the other uses CHRONYD. NTP has a nice command ‘ntpq ifstats’ that provides NTP request/response stats for each server interface / IP address c…

The approach I take is to use iptables. I have a bunch of rules that match NTP on each address that my servers are listening on, and iptables then keeps track of how many packets hit each rule: Chain ntp_in (1 references) pkts bytes target prot opt in out source destinat…

Thanks, this seems promising. This server (cloud VM) uses firewalld, which I believe uses iptables, so I just need to figure out how to to set up any extra rules needed and how to view the stats. I feel a new project coming on…

@csweeney05 Thanks. I took a look and actually deployed it on my cloud system. However it (a) doesn’t; break out IPv4 versus IPv6 traffic and (b) it doesn’t allow you to show only NTP traffic (i.e. traffic to/from port 123). Since this system hosts other things besides the crony server it doesn’t r…

Running a time server inside a VM is not really recommended…. just sayin’

Not true anymore today, at least generally speaking.

[image] microchip8: Running a time server inside a VM is not really recommended…. just sayin’ Perhaps @stevesommars has thoughts on this (he looked into this), since quite a few pool servers are virtual these days and appear to perform reasonably well - at least within ‘pool standards’.

Really not true these days (and hasn’t been true for several years). Provided things are set up properly and adequately resourced then a VM is fine. This cloud hosted VM has 4 ARM64 cores, 32 GB RAM, 256 GB NVMe storage and 4 Gbit/s internet bandwidth and will give many a ‘real’ machine a good run f…

I don’t know what “pool standards” means. If an NTP server returns a Mode 4 response where at least one of the two timestamps is error (taking in account root delay & root distance), then it is a falseticker, at least for some period. By that criteria many NTP servers are occasionally falsetickers…

Sidenode: AWS provides a PTP SHM for EC2 which can be access by chrony :slight_smile: [image] It’s About Time: Microsecond-Accurate Clocks on Amazon EC2 Instances | Amazon... This post is written by Josh Levinson, AWS Principal Product Manager and Julien Ridoux, AWS Principal Software E…

Is there a Chrony equivalent for 'ntpq ifstats'?

Server operators

csweeney05 August 6, 2025, 2:18pm 4

Check out this thread Monitoring Script provides very nice stats.

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Is there a Chrony equivalent for 'ntpq ifstats'?

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