Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : Question on server time

[petedes]

Hello

I am having a problem with the time on my server. After a reboot, the time stamp is 40 minutes slow. I can issue a "date -s " command and fix it temporarily but when the server reboots again, the time is set back to 40 minutes behind. Any ideas on how to change the time on a server premanently?

Thanks
Pete

[RutRow]

Assuming a Linux box, you can use the hwclock command.

hwclock --systohc

man hwclock for more info.

[petedes]

Sorry, forgot to mention the server OS, this is a redhat 7.2 box

[hiryuu]

You may also want to look into ntpdate and ntpd to automatically maintain your server's clock.

[fog]

Yes, hiryuu said it.

I'm not sure if it's standard with RedHat or not, but all the Linux boxes I use get ntpdate installed.

ntpdate allows you to sync clocks with known-accurate* time sources. You esentially just run "ntpdate server.dom" -- http://www.eecis.udel.edu/~mills/ntp/servers.html has a list of servers. (If you don't have ntpdate, you can grab it from rpmfind.net.) I'd highly recommend it.

* In theory. I've run ntpdate consecutively with different hosts and been off by about 45 minutes. This shouldn't happen, as it's usually precise to a fraction of a second; I think one of the clocks was just totally whacked.