Windows Server Uptime alert in Nagios - NSClient

[sify_nagios]

Hi Team,

I would like to get alert whenever uptime of windows server is less than 2 hours or specified.
I can see nagios xi fetching the Uptime value by using below command.

/usr/local/nagios/libexec/check_nt -H 172.20.30.13 -s "" -p 12489 -v UPTIME

But it does trigger alerts.

Kindly guide us to achieve the same.

Thanks
Srini.

[Box293]

Code: Select all

/usr/local/nagios/libexec/check_nt --help

Usage:
check_nt -H host -v variable [-p port] [-w warning] [-c critical]
[-l params] [-d SHOWALL] [-u] [-t timeout]

Options:
-w, --warning=INTEGER
Threshold which will result in a warning status
-c, --critical=INTEGER
Threshold which will result in a critical status

UPTIME =
Get the uptime of the machine.
-l <unit>
<unit> = seconds, minutes, hours, or days. (default: minutes)
Thresholds will use the unit specified above.

Code: Select all

/usr/local/nagios/libexec/check_nt -H 172.20.30.13 -s "" -p 12489 -v UPTIME -w 120

[sify_nagios]

Hi,

The given command doesn't return critical or warning whenever the server is down.
It simply display the uptime of server.

Code: Select all

[root@Nagiosprimary perfdata]# /usr/local/nagios/libexec/check_nt -H 192.168.50.200 -p 12489 -v UPTIME -w 120
System Uptime - 0 day(s) 0 hour(s) 6 minute(s) |uptime=6
You have new mail in /var/spool/mail/root
[root@Nagiosprimary perfdata]#

I need the uptime should send a notification and alert.

Kindly guide us.

Regards
Srini.

[lmiltchev]

Did you include the warning or the critical threshold in your command? The state of the service will change, and you will receive notification if the value is below the threshold...

The following command should give you "OK" state (no thresholds specified):

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/usr/local/nagios/libexec/check_nt -H 192.168.50.200 -p 12489 -v UPTIME

You can check it out by running:

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echo $?

This will give you WARNING:

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/usr/local/nagios/libexec/check_nt -H 192.168.50.200 -p 12489 -v UPTIME -w 120

and this - CRITICAL:

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/usr/local/nagios/libexec/check_nt -H 192.168.50.200 -p 12489 -v UPTIME -c 120

You check command should look like this (if you want to receive a WARNING notification)

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check_command			check_xi_service_nsclient!password!UPTIME!-w 120

[sify_nagios]

Hi,

Code which i have mentioned in the earlier reply was taken from CLI.

[root@Nagiosprimary perfdata]# /usr/local/nagios/libexec/check_nt -H 192.168.50.200 -p 12489 -v UPTIME -w 120
System Uptime - 0 day(s) 0 hour(s) 6 minute(s) |uptime=6
You have new mail in /var/spool/mail/root
[root@Nagiosprimary perfdata]#

It doesn't return the warning or critical even though the server uptime below threshold and threshold mentioned.
Kindly check and let us know whether it will return state in CLI or not.

Note: I haven't tested it in GUI since not succeed on CLI.

Regards
Srini.

[Box293]

It doesn't return the warning or critical even though the server uptime below threshold and threshold mentioned.
Kindly check and let us know whether it will return state in CLI or not.

Execute the command above.
Then immediately execute this command:

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echo $?

This will return either 0, 1, 2, 3
These codes are what informs Nagios as to the state of the check.

https://nagios-plugins.org/doc/guidelines.html#AEN78

The words on the screen are just there for us humans to see what the data is. Unfortunately in this case it does not say "WARNING", but that's not important as it is the exit code which tells Nagios what the state is.

[WillemDH]

You could consider using check_nrpe which has better output and more options. Check out Troy's site here: http://sites.box293.com/nagios/guides/c ... cks/uptime which explains how to do that.
For example if you say:

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check_nrpe -H 192.168.142.1 -t 30 -c Check_Uptime -a show-all 'warning=uptime<1d' 'critical=uptime<1d'

Output:

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critical(uptime: 01:39h, boot: 2015-Jan-06 05:38:27 (UTC))|'uptime'=5980s;86400;86400

Grtz

Willem

[tgriep]

sify_nagios, let us know if you need any more help on this.

[sify_nagios]

Hi Team,

Its working now. Thanks a lot for your support.

Rgds
Srini