Questions tagged [chrony]
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60 questions
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257views
Missing read access to /etc/chrony/chrony.keys and Cannot open /var/log/chrony/tracking.log due to permission denied
i hope this post finds you well, i have a three NTP servers ( two chrony , and one ntpsec ) , that peer to peer to each , the problem is when i pass to authentication ( symmetric key between ntp ...
0votes
1answer
126views
Chrony NTP: synchronization with an external NTP server in my Docker container works for a few seconds, but after that, synchronization stops working
Time synchronization with an external NTP server in my Docker container works for a few seconds, but after that, synchronization stops working : logs : 2024-09-08T20:54:15Z chronyd version 4.0 ...
- 151
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1answer
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diagnosing chronyc sources unusable - time won't sync
Trying to get chrony working on a LAN, in RHEL-8.10. The service on either my chrony server or a client appears to be functional as reported by a service chronyd status -l. However I cannot get time ...
- 8,301
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chrony immediate time sync
Running RHEL-8.9 I have a handful+ servers in a computer lab, which do not have an internet connection and [currently] have no means of fetching any kind of stratum-0 type time. We therefore manually ...
- 8,301
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123views
chrony takes many minutes to read refclocks after boot
I'm looking to provide precise time to a Raspberry Pi 4 without internet via a UBLOX GNSS module that sends NMEA sentences to /dev/serial0 and a pulse-per-second (PPS) signal to /dev/pps0. All this ...
- 123
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911views
chrony port 323 automatically open with firewalld?
Documentation states chrony uses port 323udp by default, versus port 123udp that old NTP used. But where is port 323 defined, because I do not see it in the default /etc/chrony.conf as it comes in a ...
- 8,301
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1answer
897views
Chrony is not sync with date command
I paused the virtual machine on the VM and disconnected its internet connection without rebooting the system. When I started the system from sleep mode without rebooting, the system clock continued ...
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1answer
279views
Tracking Fields in Chrony
When I study with chronyc tracking command I got some fields and I need more description about it. chronyc tracking ---------------- Reference ID : B9E84541 (nobody.yourvserver.net) Stratum ...
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201views
ntpd requires stripping out the HEX: prefix from SHA1 and SHA256 hex keys to interwork with chrond server
I am new to this business, and could not find the answers to the following: In order for ntpd client to sync up with chronyd server using a hex key value, I found that I need to strip out the HEX: ...
5votes
1answer
2kviews
In Debian bullseye, does systemd-timesyncd check for other ntp daemons?
I've used systemd-timesyncd as my system timekeeper for several years now. I run a Debian derivative called raspbian for my Raspberry Pis. I'm mostly very pleased with the SNTP client that is systemd-...
- 3,727
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2answers
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Chronyd clients query
it's possibile see log of sync query from client? There are tracking.log statistics.log measurements.log but in this log there are not clients query I try from my client to query with command ntpdate ...
- 109
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285views
Force NTP step whenever the Internet comes up
Assume there is a PC with dead CMOS battery and unreliable Internet connection. As far as I understand, both chrony and ntpd try to correct huge time differences (years) once – upon startup, – but ...
- 153
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1answer
196views
How can I determine the current reliability [correctness] of the system time?
I'm working on a project which will acquire a lot of timestamped data at fairly high resolution (50 samples per second) over a very long period of time (years). The solution includes various failover ...
- 20.1k
1vote
1answer
3kviews
Chrony - Synchronize the date and time of all host computers in a network without internet connection
I have two machines, host A with IP 192.168.0.1 host B with IP 192.168.0.2 They connected to the same network and I would like to set the date and time of machine B to match those of machine A. ...
- 2,524
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851views
Using RTC PPS for syncing computer by NTP
I've seen a decent amount of documentation for how one would use a GPS and its PPS signal along with an NTP package (like ntpd or chrony) to synchronize the computer's clock. I have a need similar to ...
