Questions tagged [chrony]
The chrony tag has no usage guidance.
59
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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 ...
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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 ...
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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 ...
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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 ...
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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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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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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: ...
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Chrony's "sources with unknown address" in `activity` and `sources -a` when using NTP Pool Servers
I found chronyc's activity command outputting something like this:
chronyc> activity
200 OK
5 sources online
0 sources offline
0 sources doing burst (return to online)
0 sources doing burst (return ...
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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-...
- 3,087
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740
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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 ...
- 21
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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 ...
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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 ...
- 19.1k
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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. ...
- 2,464
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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 ...
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Why still chrony is not taking time from PPS after 197 hours?
I'm using chrony where GPSD and the PPS will be used for accurate timings. my chrony.conf file as follows,
refclock SHM 0 delay 0.8 refid NMEA trust prefer ...
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