Questions tagged [chrony]

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system clock synchronized: no

# timedatectl reports System clock synchronized: no even when NTP service: active and # systemctl status chronyd shows active (running), and the logs therein don't show anything like an error; I see ...
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1answer
20 views

Problem with chrony 3.2 syncing to NTP server pools

I have a problem similar to Chrony 3.1 refuses to sync with ntp server Scenario: A newly installed server using SLES15 SP2 is running chrony 3.2. I had configured two NTP server pools that run the ...
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Linux PXIe Chassis PPS Ingestion

I am trying to get my Linux Controller to ingest a pulse per second to have chrony use as a reference clock. This is all in a NI PXIe chassis. I know that I can use a timing card to send the PPS ...
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2answers
34 views

Missing chrony package in Ubuntu Bionic

I am using HashiCorp Packer to build a new AWS AMI. I want to preinstall the NTP client Chrony (it's popular in our organization and it will get config support from people outside our team). But when ...
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38 views

check Ntp daemon via Ntp3 protocol

On the server, I stop the chronyd daemon (ver 3.5). I start it and send a NTP3 CLIENT query, to localhost port 123/udp: NTP_VERSION << 3 | NTP_MODE_CLIENT The first answer has the status 0xdc ...
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18 views

How to use a GPS module on UART without preventing Linux from boot

I'm trying to get the following running: RaspberryPi4 Kali and GPS module on UART /dev/ttyS0 Odroid-C2 Ubuntu and GPS module on UART /dev/ttyS1 Nomatter what I try to do, on a reboot the ...
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1answer
361 views

chrony synchronitation

I have a bunch of rhel servers and I must make sure all of then are synchronized in time. They all are running chronyd service. My question is, is there any utility to check this via a command? Does ...
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1answer
6k views

Set clock to 24 hour format for all users

On Fedora 30, I'm currently displaying the date in 24 hour format in the desktop environment. I'm syncing time via chronyd. But on the CLI, the time is displaying as Fri 22 Nov 2019 02:47:51 PM EST ...
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3answers
98 views

how to build stable NTP server

we have in some room ( with no connection to internet network ) , linux redhat servers we installed the NTP clients based on crhony service on all machines to sync to NTP server now we want to ...
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1answer
357 views

Chrony sources are with unknown address

I'm trying to setup chrony but it's not working. I start the service using one of the following command: sudo systemctl stop chronyd; sudo systemctl start chronyd sudo systemctl restart chronyd ...
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1answer
400 views

is it mandatory to configure the allow in chrony.conf

according to the redhat document - https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/sect-understanding_chrony_and-its_configuration allow ...
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686 views

time on machines change after some time in spite chrony service configured

we have machines in cluster before one week we restart the chrony service , and we check the time on all machines after chrony restart time was ok on all machines after 2 days we noticed that on ...
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1answer
766 views

Chrony on RHEL7.2 can sync to windows ntp server, But Chrony on RHEL7.4 can't sync it

according to redhat link: https://access.redhat.com/solutions/3425701 we can see that - Chrony on RHEL7.2 can sync to windows ntp server, But Chrony on RHEL7.4 can't sync it. in my case we have ...
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1answer
112 views

Why is the /var/log/chrony folder empty?

we are using chrony in order to sync our servers to ntp servers ( redhat 7.2 ) we configured the logdir /var/log/chrony in chrony.conf and restart the chrony ( systemctl restart chronyd ) , but ...
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2answers
399 views

Check ntp server authentication with chronyd client

Is there an alternative for ntpq -c as, while using chronyd as client? While using ntpd as client, ntpq -c as provides details about authentication of client to server using keys.
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3answers
7k views

chrony vs. systemd-timesyncd – What are the differences and use cases as NTP clients?

Somehow but not quite building upon the older question "ntpd vs. systemd-timesyncd - How to achieve reliable NTP syncing?", I'd like to ask about the differences between chrony and systemd-timesyncd ...
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1answer
4k views

Chrony client do not change system and hardware date

Context Centos 7 chronyd (chrony) version 3.1 Issue I am encountering an issue with chonyd and server date. First, change current date to old date I changed the hardware clock date from the ...
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1answer
252 views

Is there any way to prevent chrony stratum plus one?

When using chrony, I synchronize the time from the clock source of stratum=2. Is there any way to prevent my machine from stratum=3, but stratum is equal to 2? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~...
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1answer
90 views

when chrony sync time wtih local,why the Last Sample is not zero?

Linux version:Centos 7 chrony version :3.2 chrony.conf: driftfile /var/lib/chrony/drift local stratum 10 server localhost rtcsync makestep 1.0 3 logdir /var/log/chrony allow this picture is about ...
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1answer
316 views

Time gets 3 hours forward always on midnight

Every time I sync the time on a CentOS 7 (Scientific Linux 7) server virtualized on VMware ESXi, I arrive the next day to find that the time gets 3 hours forward. I did a cronjob to write the time ...
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1k views

chrony not updating the server time properly in Centos 7

I am using chrony for NTP time synchronization for my Centos 7 server. some time I notice some servers time is not correct, I have to use ntpdate command to correct the time. I have below ...
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2answers
2k views

CentOS 7 timedatectl does not work properly with chronyd

In order to have timedatectl NTP enabled and synchronized to be yes, I had to disable chronyd, stop ntpd, perfrom ntpdate, then start ntpd. After that I can get NTP enabled and synchronized in ...
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2answers
14k views

Chrony 3.1 refuses to sync with ntp server

I have 70 machine with CentOS 7.2 and chrony version 2.1.1 syncing perfect with my NTP server protocol v3. Recently I added 30 machines with CentOS 7.4 and chrony version 3.1, but these 30 machines ...
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0answers
3k views

Chrony does not want to synchronize

I am trying to deploy an ntp server in my local network, so I followed these steps (i used the tutorial here): apt install chrony And I added the following lines: server time.google.com iburst ...
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2answers
8k views

Difference between chronyd and ntpd

What is the difference between chronyd and ntpd? I know that ntpd can gradually adjust the time so that it can converge gradually to the the reference clock. Can this be done with chrony?
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1answer
10k views

Chrony 506 Cannot talk to daemon

I'm having trouble configuring chrony to sync the time between my raspberry pi and a desktop computer in an isolated network. My raspberry pi's chrony.config file looks like this: server master ...