Operations grimoire/NTP

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Revision as of 09:14, 27 November 2025 by Dereckson (talk | contribs) (Created page with "NTP allows to sync time. That's especially important for accurate logs and TLS certificates. == Recommended NTP servers == There is a CC list of servers by country. France makes sense for most servers to use the country of the datacenter where the server is located. == By OS == NTP is configured in core. === FreeBSD === We use ntpd service. Each day, drift from NTP servers is checked by periodic <code>480.status-ntpd</code>. === Linux === Chrony service is used. ==...")
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NTP allows to sync time. That's especially important for accurate logs and TLS certificates.

There is a CC list of servers by country. France makes sense for most servers to use the country of the datacenter where the server is located.

By OS

NTP is configured in core.

FreeBSD

We use ntpd service. Each day, drift from NTP servers is checked by periodic 480.status-ntpd.

Linux

Chrony service is used.

Troubleshoot

Update leap seconds

Leap seconds file isn't maintained any more by NTP package (see upstream issue)

References

NTP
Chrony
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