On 24-06-15 23:54, [email protected] wrote: > If you look at the CSV log link from your monitor page, your server's time is > excellent but the monitoring station is not getting a response periodically, > causing your score to decrease by 5 every time because it failed to respond. > Is > your server being DDoS'd or using more bandwidth than it's allocated? Your > stress testing could be causing this as well. Can you ping your server > externally to check its reachability continuously and check for intermittent > downtime? > > In other words, the problem isn't between your server and torix and your > server's ability to keep accurate time, but reachability between client and > your > server is very poor. I would also check dmesg for any Ethernet issues, IP > conflicts, hardware issues, etc. When in doubt, reboot.
With the CSV-log you can see at what times the monitor sent a time request to your server (or you can extrapolate at what time you can expect the next request). You can use tcpdump to see if you receive those time requests and if your server is sending a valid response. The monitor uses an IP in the net 207.171.x.x/16 so you can set tcpdump to only dump those NTP packages. If you don't receive a time request at the times the CSV-log indicates, then you have a firewall issue at your server or with an upstream internet service provider. If you get the requests and send valid time responses, then there is most likely an issue with an upstream ISP as well. If you get the request, but you don't send a valid time response (no response at all, a KOD, no-sync (both leap bits set), etc.) then it is something in your local configuration. I hope this helps you to debug the issue further. Arnold _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
