time correction for Nagios

[nanz28v]

We have a successful installation of NagiosXI and all is running well except the system time is off by 5 hours. We are in EST and I don't know how to change it since I'm a Linux newbie and we are in evaluation to monitor windows servers only. Thank you in advance.

[abrist]

See the following doc:
http://exchange.nagios.org/directory/Do ... me/details

[nanz28v]

Thank you I was able to change the system time. However this caused an error in IE after I signed in:

NSP: Sorry Dave, I can't let you do that

Please let me know how to resolve this issue, thank you.

[abrist]

Is the date/time/timezone correct on your workstation?
Can you post the time/date/zone information from your profile? (admin --> system profile --> copy the date information and paste it here)

[nanz28v]

Date/Time
PHP Timezone: America/New_York
PHP Time: Mon, 10 Feb 2014 08:03:19 -0500
System Time: Mon, 10 Feb 2014 13:03:19 +0000

It looks like the PHP time and system does not match. I'm a Linux newbie, what command should I run on our Nagios server to fix the issue? Thank you.

[abrist]

It looks like your system is not using the correct timezone from /usr/share/zoneinfo. I did notice a weird problem on certain centos systems. Is /etc/localtime a file or dir?

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file /etc/localtime

[nanz28v]

[root@SM5NAG01 ~]# file /etc/localtime
/etc/localtime: symbolic link to `/usr/share/zoneinfo/America'
[root@SM5NAG01 ~]#

[sreinhardt]

You will want to remove that symlink and recreate it to the file within America for new york. Should be something like.

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rm /etc/localtime
ln -s /usr/share/zoneinfo/America/New_York /etc/localtime

[nanz28v]

I ran those 2 lines then the date command returned:

[root@SM5NAG01 ~]# rm /etc/localtime
rm: remove symbolic link `/etc/localtime'? y
[root@SM5NAG01 ~]# ln -s /usr/share/zoneinfo/America/New_York /etc/localtime
[root@SM5NAG01 ~]# date
Mon Feb 10 08:55:16 EST 2014
[root@SM5NAG01 ~]#

We are in EST at 1:56pm now. Is there anyway to fix this?

[abrist]

Update the clock with ntp if you have internet connectivity:

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ntpdate pool.ntp.org
date