Solved

sync date with NTPd

Posted on 2011-10-01
6
532 Views
Last Modified: 2013-12-16
hello,
I am on EST time using centos v5.7 and right now its 1.56pm I started the NTPd service

service ntpd start
chkconfig ntpd on

then I check and this is what I get

[(12:20 PM)][(root@critical)] [(~)] $ date
Sat Oct  1 12:56:03 EST 2011

how can I fix the date?
0
Comment
Question by:XK8ER
  • 3
  • 3
6 Comments
 
LVL 21

Expert Comment

by:Papertrip
Comment Utility
The correct timezone currently is actually EDT, and that is why your server is showing 1 hour off.

Change/confirm your timezone by using tzselect
[root@broken etc]# tzselect
Please identify a location so that time zone rules can be set correctly.
<snip>
The following information has been given:

        United States
        Eastern Time

Therefore TZ='America/New_York' will be used.
Local time is now:      Sat Oct  1 14:13:48 EDT 2011.
Universal Time is now:  Sat Oct  1 18:13:48 UTC 2011.
Is the above information OK?

Open in new window

0
 
LVL 1

Author Comment

by:XK8ER
Comment Utility
that doesnt change the time for the system, this is what I get.


You can make this change permanent for yourself by appending the line
        TZ='America/New_York'; export TZ
to the file '.profile' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you
can use the /usr/bin/tzselect command in shell scripts:
America/New_York
[(01:23 PM)][(root@alpha)] [(~)] $ date
Sat Oct  1 13:23:50 EST 2011

Open in new window

0
 
LVL 21

Accepted Solution

by:
Papertrip earned 500 total points
Comment Utility
My apologies you are correct, I didn't fully complete the test when I ran it on my server.  All that shows you is which value you should be using but doesn't actually change it.  I had thought it would change /etc/localtime, so let's just do that manually.
[root@broken America]# pwd
/usr/share/zoneinfo/America
[root@broken America]# date
Sat Oct  1 11:54:32 PDT 2011
[root@broken America]# cp -p New_York /etc/localtime
cp: overwrite `/etc/localtime'? y
[root@broken America]# date
Sat Oct  1 14:54:20 EDT 2011

Open in new window

If that does the trick, then change /etc/sysconfig/clock to match
[root@broken America]# cat /etc/sysconfig/clock
ZONE="America/New_York"

Open in new window






0
How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

 
LVL 1

Author Comment

by:XK8ER
Comment Utility
ok, the time is now correct.. now when the time changes into daylight saving.. would it change automatically?
0
 
LVL 21

Expert Comment

by:Papertrip
Comment Utility
Yes it will.

You may want to restart any applications that could have the old TZ cached.  I have never changed the timezone on a server apart from during the install, so I'm not sure of the repercussions of doing it on the live system.

If you are able to reboot the machine, that would be the safest, but is probably unnecessary... your call on that.
0
 
LVL 1

Author Comment

by:XK8ER
Comment Utility
I think crond would be the only service that needs to restart so that it can rotate the logs right at 4am.. other than that when I change the date its all good.
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Daily system administration tasks often require administrators to connect remote systems. But allowing these remote systems to accept passwords makes these systems vulnerable to the risk of brute-force password guessing attacks. Furthermore there ar…
rdate is a Linux command and the network time protocol for immediate date and time setup from another machine. The clocks are synchronized by entering rdate with the -s switch (command without switch just checks the time but does not set anything). …
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now