# Monitoring Operators **URL:** https://community.ntppool.org/c/monitors/15.md [Latest](https://community.ntppool.org/latest.md) · [Categories](https://community.ntppool.org/categories.md) · [Tags](https://community.ntppool.org/tags.md) --- ## [About the Monitoring Operators category](https://community.ntppool.org/t/about-the-monitoring-operators-category/3974)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 0\ **Last updated:** [July 27, 2025, 4:34am UTC](https://community.ntppool.org/t/about-the-monitoring-operators-category/3974 "2025-07-27T04:34:17Z")
In the new v4 monitoring system we’re expanding the audience for who can run monitors; this category is for announcements and discussions related to the monitoring agent and system. --- ## [Monitor request for individual study](https://community.ntppool.org/t/monitor-request-for-individual-study/4780)
**Author:** [@Fant](https://community.ntppool.org/u/Fant)\ **Replies:** 2\ **Last updated:** [October 11, 2026, 6:11am UTC](https://community.ntppool.org/t/monitor-request-for-individual-study/4780 "2026-10-11T06:11:00Z")
I’m working on security and measurement research of the pool monitoring system. For the past two months, I’ve studied the pool architecture and run my own NTP Pool server. I’m aware of the standard requirement: a verifi… --- ## [Adding new monitor fails](https://community.ntppool.org/t/adding-new-monitor-fails/4759)
**Author:** [@andyring](https://community.ntppool.org/u/andyring)\ **Replies:** 4\ **Last updated:** [September 29, 2026, 3:24am UTC](https://community.ntppool.org/t/adding-new-monitor-fails/4759 "2026-09-29T03:24:45Z")
Hello all, I have multiple NTP Pool servers that have been verified for well over 18 months. I’m trying to register a new NTP Pool v4 monitoring node, but the registration page returns: internal api: 409 Conflict Moni… --- ## [Ntppool-agent changes from 4.1.0 to 4.2.0](https://community.ntppool.org/t/ntppool-agent-changes-from-4-1-0-to-4-2-0/4738)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 14\ **Last updated:** [September 23, 2026, 9:32pm UTC](https://community.ntppool.org/t/ntppool-agent-changes-from-4-1-0-to-4-2-0/4738 "2026-09-23T21:32:15Z")
The main change here is that I merged a postgres refactor into the main branch as I’m updating the beta site with that (and the production site soon I hope). The ntppool-agent should work with either. The list below is a… --- ## [Monitoring Server menu disappeared](https://community.ntppool.org/t/monitoring-server-menu-disappeared/4517)
**Author:** [@Marc](https://community.ntppool.org/u/Marc)\ **Replies:** 9\ **Last updated:** [September 8, 2026, 8:12pm UTC](https://community.ntppool.org/t/monitoring-server-menu-disappeared/4517 "2026-09-08T20:12:52Z")
Hello, about 2 weeks ago I noticed that I was able to register Monitoring Server. I added to of my servers, the should have the names lulux1-… and lulux2-… A few days ago I noticed that the sub-menu has vanished from … --- ## [Monitoring agent for FreeBSD](https://community.ntppool.org/t/monitoring-agent-for-freebsd/4243)
**Author:** [@scamp](https://community.ntppool.org/u/scamp)\ **Replies:** 15\ **Last updated:** [September 4, 2026, 12:24pm UTC](https://community.ntppool.org/t/monitoring-agent-for-freebsd/4243 "2026-09-04T12:24:21Z")
Hi, How do I install ntppool-agent in FreeBSD? Where can I find the packages for that OS? https://builds.ntppool.dev/repo/ page seems to contain instructions for Linux only. --- ## [Ntppool-agent test version 4.1.0 available in deb/rpm repositories](https://community.ntppool.org/t/ntppool-agent-test-version-4-1-0-available-in-deb-rpm-repositories/4174)
**Author:** [@MagicNTP](https://community.ntppool.org/u/MagicNTP)\ **Replies:** 16\ **Last updated:** [June 14, 2026, 1:18pm UTC](https://community.ntppool.org/t/ntppool-agent-test-version-4-1-0-available-in-deb-rpm-repositories/4174 "2026-06-14T13:18:01Z")
I note that a version 4.1.0 of the ntppool-agent package is available in the test repositories for deb and rpm packages. Does anybody know what the updates/changes are? The GitHub repository has a branch with activity … --- ## [Running ntppool-agent on the same host as my pool server - conflict?](https://community.ntppool.org/t/running-ntppool-agent-on-the-same-host-as-my-pool-server-conflict/4543)
**Author:** [@StrawberryMew](https://community.ntppool.org/u/StrawberryMew)\ **Replies:** 7\ **Last updated:** [June 10, 2026, 4:41pm UTC](https://community.ntppool.org/t/running-ntppool-agent-on-the-same-host-as-my-pool-server-conflict/4543 "2026-06-10T16:41:23Z")
I’m considering running the ntppool-agent monitor on the same host as my pool server (smolnut - stratum 1 GPS PPS). Before I do, I wanted to check whether this causes any issues. My concern: if the monitor probes pool s… --- ## [NTPPOOL agent can't run inside docker container?](https://community.ntppool.org/t/ntppool-agent-cant-run-inside-docker-container/4479)
**Author:** [@falciloid](https://community.ntppool.org/u/falciloid)\ **Replies:** 3\ **Last updated:** [June 4, 2026, 5:35am UTC](https://community.ntppool.org/t/ntppool-agent-cant-run-inside-docker-container/4479 "2026-06-04T05:35:43Z")
Hello. I run NTP servers on RouterOS for a few years and now I gotta try to add monitors. Most staple place do deploy monitor that I have for now it’s a debian system inside container on my main RouterOS. I try, but I ca… --- ## [Issue with registration of a test NTP Pool Agent version v4.1.4](https://community.ntppool.org/t/issue-with-registration-of-a-test-ntp-pool-agent-version-v4-1-4/4365)
**Author:** [@NTPman](https://community.ntppool.org/u/NTPman)\ **Replies:** 11\ **Last updated:** [June 3, 2026, 11:30am UTC](https://community.ntppool.org/t/issue-with-registration-of-a-test-ntp-pool-agent-version-v4-1-4/4365 "2026-06-03T11:30:07Z")
My issue is on aarch64, Raspberry PI 4 with Tumbleweed as OS, but I do not think that matters. Seting-up a new test monitor, sudo journalctl -u ntppool-agent@\\\* -f gives: Apr 24 08:44:40 tumbleweed.home ntppool-agent\[5… --- ## [Still problems? Or is my install outdated (4.1.5): "...detected certificate/connection error, flushing connection pool"](https://community.ntppool.org/t/still-problems-or-is-my-install-outdated-4-1-5-detected-certificate-connection-error-flushing-connection-pool/4407)
**Author:** [@floppy](https://community.ntppool.org/u/floppy)\ **Replies:** 10\ **Last updated:** [May 12, 2026, 10:48am UTC](https://community.ntppool.org/t/still-problems-or-is-my-install-outdated-4-1-5-detected-certificate-connection-error-flushing-connection-pool/4407 "2026-05-12T10:48:04Z")
I noticed a few days ago that my two monitors do not seem to “monitor and report” anymore, as the stats say 0. Then I picked this up in my logs: ==\> ntppool-agentd.log \<== May 9 18:45:51 sonne ntppool-agent\[3119014\]:… --- ## [Ntppool-agent 4.1.3 is less verbose](https://community.ntppool.org/t/ntppool-agent-4-1-3-is-less-verbose/4348)
**Author:** [@avij](https://community.ntppool.org/u/avij)\ **Replies:** 10\ **Last updated:** [May 3, 2026, 2:22pm UTC](https://community.ntppool.org/t/ntppool-agent-4-1-3-is-less-verbose/4348 "2026-05-03T14:22:02Z")
I’m not sure if this change is intended (it may or may not be), but ntppool-agent 4.1.3 is less verbose than 4.1.2 and older versions. Before: ntppool-agent\[2643477\]: level=INFO msg="batch processing" env=test ip\_versi… --- ## [Problem with api.mon.ntppool.dev? net/http: timeout awaiting response headers](https://community.ntppool.org/t/problem-with-api-mon-ntppool-dev-net-http-timeout-awaiting-response-headers/4383)
**Author:** [@gunnar](https://community.ntppool.org/u/gunnar)\ **Replies:** 6\ **Last updated:** [April 30, 2026, 2:50am UTC](https://community.ntppool.org/t/problem-with-api-mon-ntppool-dev-net-http-timeout-awaiting-response-headers/4383 "2026-04-30T02:50:19Z")
Hi, I see a large number of errors submitting monitoring results back with the error “net/http: timeout awaiting response headers”. But they seem to be intermittant, looks like some batches work, some don’t? I am runnin… --- ## [Monitoring from clients on more OSes (e.g. macOS)](https://community.ntppool.org/t/monitoring-from-clients-on-more-oses-e-g-macos/4382)
**Author:** [@Artoria2e5](https://community.ntppool.org/u/Artoria2e5)\ **Replies:** 3\ **Last updated:** [April 29, 2026, 9:56am UTC](https://community.ntppool.org/t/monitoring-from-clients-on-more-oses-e-g-macos/4382 "2026-04-29T09:56:22Z")
Some people use mac mini machines as home servers – they are after all quiet and low power – and home vantage points do provide much-needed views in countries with complex network conditions (cough cough, CN). I happen t… --- ## [Beta system monitoring testing](https://community.ntppool.org/t/beta-system-monitoring-testing/3875)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 91\ **Last updated:** [April 24, 2026, 4:22pm UTC](https://community.ntppool.org/t/beta-system-monitoring-testing/3875 "2026-04-24T16:22:36Z")
I am testing a version 4 of the monitoring system on the beta system It helps a lot to have more servers registered in the beta system: pool.ntp.org: the internet cluster of ntp servers Some of you who have had servers… --- ## [Switched from ntpd to chrony, no data anymore](https://community.ntppool.org/t/switched-from-ntpd-to-chrony-no-data-anymore/4239)
**Author:** [@xavier8854](https://community.ntppool.org/u/xavier8854)\ **Replies:** 2\ **Last updated:** [February 9, 2026, 12:58pm UTC](https://community.ntppool.org/t/switched-from-ntpd-to-chrony-no-data-anymore/4239 "2026-02-09T12:58:22Z")
Hi, I switched one of my servers from ntpd to chrony; since then, there are no data anymore : The output of chronyc : root@aragorn:~# chronyc -n tracking Reference ID : 91EE5050 (145.238.80.80) Stratum :… --- ## [How long before a dead monitor is replaced?](https://community.ntppool.org/t/how-long-before-a-dead-monitor-is-replaced/4234)
**Author:** [@john1](https://community.ntppool.org/u/john1)\ **Replies:** 3\ **Last updated:** [February 2, 2026, 2:55pm UTC](https://community.ntppool.org/t/how-long-before-a-dead-monitor-is-replaced/4234 "2026-02-02T14:55:33Z")
I see the monitor kemba1-1a6a7hp has been dead for a few hours. I checked on a few pool servers. But it is still listed in the active list of servers, with a 20 score, which I guess was its last score. So, how long befor… --- ## [Hostname doesn't match against certificate - https://builds.ntppool.dev/ntppool-agent/builds/release/](https://community.ntppool.org/t/hostname-doesnt-match-against-certificate-https-builds-ntppool-dev-ntppool-agent-builds-release/4233)
**Author:** [@john1](https://community.ntppool.org/u/john1)\ **Replies:** 3\ **Last updated:** [January 23, 2026, 6:20am UTC](https://community.ntppool.org/t/hostname-doesnt-match-against-certificate-https-builds-ntppool-dev-ntppool-agent-builds-release/4233 "2026-01-23T06:20:45Z")
My script that checks for new agent versions failed this morning when trying to access: https://builds.ntppool.dev/ntppool-agent/builds/release/ The certificate is for builds.ntppool.dev, so it looks like the correc… --- ## [Consistent 'i/o timeout' from monitor rupee1-38crthf across multiple servers](https://community.ntppool.org/t/consistent-i-o-timeout-from-monitor-rupee1-38crthf-across-multiple-servers/4221)
**Author:** [@FalseTicker](https://community.ntppool.org/u/FalseTicker)\ **Replies:** 2\ **Last updated:** [January 2, 2026, 3:54pm UTC](https://community.ntppool.org/t/consistent-i-o-timeout-from-monitor-rupee1-38crthf-across-multiple-servers/4221 "2026-01-02T15:54:44Z")
I am seeing consistent timeout on multiple servers from rupee1-38crthf across 3 of my Stratum 2 servers. The most effected server is 85.239.235.13 recently started and is trying to reach it’s initial 10.0 score. I have … --- ## [New beta monitors not listed for old servers](https://community.ntppool.org/t/new-beta-monitors-not-listed-for-old-servers/4203)
**Author:** [@avij](https://community.ntppool.org/u/avij)\ **Replies:** 3\ **Last updated:** [December 22, 2025, 3:14pm UTC](https://community.ntppool.org/t/new-beta-monitors-not-listed-for-old-servers/4203 "2025-12-22T15:14:03Z")
I’ve observed that on the production site, someone/something periodically adds the new monitors to monitor existing NTP servers every few weeks or so, but this does not seem to happen on the beta site. The new monitors s… --- ## [Issues with api-buzz.mon.ntppool.dev](https://community.ntppool.org/t/issues-with-api-buzz-mon-ntppool-dev/4190)
**Author:** [@MagicNTP](https://community.ntppool.org/u/MagicNTP)\ **Replies:** 3\ **Last updated:** [December 20, 2025, 7:07pm UTC](https://community.ntppool.org/t/issues-with-api-buzz-mon-ntppool-dev/4190 "2025-12-20T19:07:09Z")
@ask, since a few days I think, the system logs on various of my monitors are getting spammed by messages like the following: Dec 19 14:01:54 debian ntppool-agent\[25478\]: level=INFO msg="failed to send logs to https://a… --- ## [Ntppool-agent v4.0.5](https://community.ntppool.org/t/ntppool-agent-v4-0-5/4033)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 14\ **Last updated:** [October 13, 2025, 5:57pm UTC](https://community.ntppool.org/t/ntppool-agent-v4-0-5/4033 "2025-10-13T17:57:23Z")
In v4 we’re using the MQTT connection less, so I didn’t notice (though monitoring was squeaking!) that I broke the client connectivity. It is used for the “ad hoc NTP check” feature and for the first sanity check when ad… --- ## [Mdrmo1-3drzsgk location](https://community.ntppool.org/t/mdrmo1-3drzsgk-location/4087)
**Author:** [@avij](https://community.ntppool.org/u/avij)\ **Replies:** 5\ **Last updated:** [October 4, 2025, 9:13pm UTC](https://community.ntppool.org/t/mdrmo1-3drzsgk-location/4087 "2025-10-04T21:13:02Z")
Based on the name, I’d expect mdrmo1 to be located in Moldova, near the Chișinău Eugen Doga International Airport (RMO). However, looking at the scores of the Moldovan NTP servers, this monitor seems to be 130-140 ms awa… --- ## [Monitoring / Diagnosis tool to query and compare NTP Servers](https://community.ntppool.org/t/monitoring-diagnosis-tool-to-query-and-compare-ntp-servers/4052)
**Author:** [@aguacero7](https://community.ntppool.org/u/aguacero7)\ **Replies:** 0\ **Last updated:** [September 3, 2025, 8:08pm UTC](https://community.ntppool.org/t/monitoring-diagnosis-tool-to-query-and-compare-ntp-servers/4052 "2025-09-03T20:08:28Z")
I built a lightweight CLI tool in Rust, rkik, that inspects NTP servers. It is able to compare X servers together, has multiple output formats and has continous monitoring options. I think it could be easily integrated … --- ## [Monitoring metrics](https://community.ntppool.org/t/monitoring-metrics/4003)
**Author:** [@john1](https://community.ntppool.org/u/john1)\ **Replies:** 17\ **Last updated:** [August 13, 2025, 7:22am UTC](https://community.ntppool.org/t/monitoring-metrics/4003 "2025-08-13T07:22:30Z")
How are the totals in the light blue calculated? I have only the two monitors and if I add their reported 1 hour tests/min, I get 13.1 + 9.6 = 22.7, which is roughly half of what is reported in the blue block. The 24 hou… --- ## [How important is a static IP for monitors?](https://community.ntppool.org/t/how-important-is-a-static-ip-for-monitors/4024)
**Author:** [@msiegen](https://community.ntppool.org/u/msiegen)\ **Replies:** 12\ **Last updated:** [August 12, 2025, 10:50am UTC](https://community.ntppool.org/t/how-important-is-a-static-ip-for-monitors/4024 "2025-08-12T10:50:30Z")
My default hosting setup gives each VM a static /64 and uses RFC 8981 temporary address extensions to vary the address selected for outgoing sessions over time. I turned up a monitor a few days ago and it looks to be wo… --- ## [NTP Pool Agent v4.0.2](https://community.ntppool.org/t/ntp-pool-agent-v4-0-2/3998)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 4\ **Last updated:** [August 12, 2025, 6:45am UTC](https://community.ntppool.org/t/ntp-pool-agent-v4-0-2/3998 "2025-08-12T06:45:10Z")
Fixed an unlikely crash on first setup in v4.0.1 and the RPM packaging issues mentioned elsewhere in v4.0.2. If you have had servers verified in the pool for a long time you can add monitors following the instructions a… --- ## [Airport code selection](https://community.ntppool.org/t/airport-code-selection/4025)
**Author:** [@msiegen](https://community.ntppool.org/u/msiegen)\ **Replies:** 5\ **Last updated:** [August 12, 2025, 3:29am UTC](https://community.ntppool.org/t/airport-code-selection/4025 "2025-08-12T03:29:41Z")
When adding a monitor in California, I was given a dropdown to select from various airport codes in Oklahoma and Kansas. I think this happened because MaxMind only provides country-level data for the IP in question, so … --- ## [Difference between two DNS Queries graphs](https://community.ntppool.org/t/difference-between-two-dns-queries-graphs/3983)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 2\ **Last updated:** [August 2, 2025, 12:42am UTC](https://community.ntppool.org/t/difference-between-two-dns-queries-graphs/3983 "2025-08-02T00:42:40Z")
On https://status.ntppool.org/ I see two DNS graphs: “𝙳𝙽𝚂 𝚀𝚞𝚎𝚛𝚒𝚎𝚜” and “𝙿𝚎𝚊𝚔 𝙳𝙽𝚂 𝚀𝚞𝚎𝚛𝚒𝚎𝚜”, and I’m not sure I understand the difference between the two. If anyone could shed some light on this, it would be much apprecia… --- ## [Monitoring States](https://community.ntppool.org/t/monitoring-states/3977)
**Author:** [@ask](https://community.ntppool.org/u/ask)\ **Replies:** 0\ **Last updated:** [July 27, 2025, 7:57am UTC](https://community.ntppool.org/t/monitoring-states/3977 "2025-07-27T07:57:38Z")
Some questions came up in the other thread, so I prepared documentation to put on the website about the “states” shown on the server pages: There are two main state systems: your monitor’s overall status (which we call … [Next page](https://community.ntppool.org/c/monitors/15.md?page=1)