clock syncing

[unicorn]

How to adjust time? How to use OpenNTPD and configure it?

[ocicat]

Originally Posted by unicorn

How to adjust time?

https://www.openbsd.org/faq/faq10.html#OpenNTPD

How to use OpenNTPD and configure it?

https://man.openbsd.org/OpenBSD-7.4/rcctl.8

[unicorn]

sorry, I had read the first article but still confused. I want to auto sync time when booting. Which command should I run and add it to which file?

[jggimi]

The ntpd(8) daemon is started on boot by default. It will automatically synchronize the local system clock using a pool of public NTP servers, and checks the supplied time's validity through a separate pool of public HTTPS servers acting as authentication constraints.

If OpenBSD's default time synchronization is not sufficient to your needs, you can use date(8) to set the clock manually or use rdate(8) to set the clock's time using a trusted remote NTP server.

[shep]

OpenNTP is enabled out of the box as a default. Typically, it is within 200 msec and is substaintially smaller and more secure (lsmaller attack surface and fewer cve's) than ntp which is a port option:
net/ntp