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get values from HTTP Post via nagios

Posted on 2011-10-13
Medium Priority
Last Modified: 2012-05-12
I currently have a web service that posts 3 values to a page. I'd like to consume those values into Opsview (Nagios) and set thresholds of they go too high.

I was looking at Opsviews FAQ page and found this.

It is possible to generate graphs for specific performance data by appending an argument to the URL.

For graph based on check_http plugin, we get four pieces of data:

Response time (time)
Page size (size)
Warning threshold (time_warn)
Writical threshold (time_crit)
Standard URL will be similar to:

Appending '&db=,time' will generate graph based on 'time' value, eg:

Parameters can be combined so to display response time and critical threshold on same graph simply append '&db=,time,time_crit'

Here is the URL that i have. I'd like to get data for the values: dialing, connected and uncalled


Nagios doesn't know what to do if i run the check
check_http -H $HOSTADDRESS$ -u /outbound/webservice/outboundInfo.php?login=admin&pin=********&statuses=dialing,connected,uncalled -c 5

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Question by:c3very
  • 3
LVL 41

Expert Comment

ID: 36971562
an & is also a shell command.
It means start the previous command in a sub shell & don't wait for it.

so you get check_http ....

Try: (with the extra ' chars..)
check_http -H $HOSTADDRESS$ -u '/outbound/webservice/outboundInfo.php?login=admin&pin=********&statuses=dialing,connected,uncalled' -c 5

Author Comment

ID: 36979706
The extra characters definitely helped.

I'm running the command in Putty as the nagios user and it actually comes back with a response now.

nagios@opsview-appliance:/usr/local/nagios/libexec$ ./check_http -H $HOSTADDRESS$ -u '/outbound/webservice/outboundInfo.php?login=admin&pin=********&statuses=dialing,connected,uncalled&test' -c 5
HTTP OK: HTTP/1.1 200 OK - 396 bytes in 0.008 second response time |time=0.008276s;;5.000000;0.000000 size=396B;;;0

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Here is the post page and what it looks like:
<outboundinfo status="info" total="127">
<dialing total="37"/>
<connected total="90"/>
<uncalled total="0"/>

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Hopefully the check can be modified to read these values.  If the post page needs to be modified to overcome any limitation of nagios it could probably be done.
LVL 41

Expert Comment

ID: 36982569
check_http  is very limited. If you need a post use -P,
You can verify using a regex (-r) if the result is what you expected...


LVL 41

Accepted Solution

noci earned 2000 total points
ID: 36982586
If you want more control then you may need to checkout curl (http://curl.haxx.se) as the tool of choice.
and script around it.

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