topic Re: NTP Configuration in Operating System - Linux

NTP Configuration

Arun K P — Sat, 25 Apr 2009 05:18:25 GMT

Dear All,

Please help to configure NTP Server in RHEL 5.0

Advance thanks
Regards

Arun

Re: NTP Configuration

Ganesan R — Sat, 25 Apr 2009 05:36:49 GMT

Hi Arun,

There are lot of links available. you need to google it.

One of the link is..

http://am3n.profusehost.net/post/index/46/Setup-NTP-Server

Re: NTP Configuration

Ganesan R — Sat, 25 Apr 2009 05:44:03 GMT

Hi,

Check this also.

http://www.cyberciti.biz/faq/rhel-fedora-centos-configure-ntp-client-server/

Re: NTP Configuration

Arun K P — Sat, 25 Apr 2009 06:19:09 GMT

Dear all,

I want to make my current server as NTP server.All these links provides only client configuration.

Thanks and regards
Arun

Re: NTP Configuration

Matti_Kurkela — Sat, 25 Apr 2009 12:43:34 GMT

Ganesan's both links *do* provide instructions for setting up a server too. Please read the web pages again.

If you don't have a GPS receiver or any other high-precision time source, your NTP server will use the internal clock of the server machine. For that, no much configuration is needed: just adjust the "restrict" lines so that your server allows your clients to access it. (By default, RHEL 5 ntpd does not allow access).

However, it is recommended that you link your NTP server with at least two other NTP servers. That way, the local NTP server can minimize any clock errors: if the server's own clock reports one time and two other NTP servers both report a different time *and the remote servers agree with each other*, your NTP server will assume its local clock is broken/inaccurate and uses the time of the remote servers instead.

Then just start it up and make sure it will be started automatically when the system reboots:

service ntpd start
chkconfig ntpd on

If you have a GPS receiver or some other high-precision time source you wish to use, please read its manual first. Also read the NTP documentation at www.ntp.org. If you still need help after that, please describe exactly the model of your server and your time source.

MK