Hi All,

Anyone knows any squid plugin for monitoring on Nagios that actually works on Centos?

Thank You

You could use nrpe and a check command to telnet to the squid port to see if its still listening.

If you want some thing more then anybody else is welcome to point you in the right direction

I am kind of a beginner so i really need more info please.
Thank You

Instead I would check connectivity with a command like 'check_http -I proxyIp -p proxyPort -u http://somesiteaddre.ss/' instead. If the cache doesn't return outside the URI (maybe add a regex to get certain result) then you know there's something functionally wrong, while checking the port only tells you if the service is listening.


If Nagios is new for you then I strongly suggest reading the docs, backing up the default configs and experiment with testing default services. This should not be mistaken for a "RTFM"-type answer, it's just that the common first error newbies make is to not read the docs. They really are not that hard to get through, you need the knowledge to run it anyway and it makes it easier for you to ask specific questions.

OK, I guess i will neeed to put more effort in explaining the problem if i want to get satisfactory answer.
I am running nagios on CentOS and i am monitoring windows and linux server and netowrk devices with no problem. What i want to know is if anyone of you is monitoring Squid Proxy with Nagios. The plugin for monitoring Squid does not come as a default with the installation of Nagios thus i was looking for some "custom" made Squid plugins. I have found couple but unfortenatelly they happen to be OS specific on none of those appeared to work with Centos. For example, the error message i am getting is "Return code of 126 is out of bounds - plugin may be missing".

So again, my question is if anyone of you know for some Nagios plugin for monitoring squid that would work on Red Hat or CentOS.

Thank You

Not sure if this is still an ongoing problem, but perhaps this solution might prove useful to someone.

Like a number of people I had problems getting the 'check_squid' plugin to work with my Squid proxy, since I had it listening on port 8080. I found a number of suggestions involving using 'check_http' to check whether the service was running, but this didn't work regardless what I did.

In the end I found a workaround; I edited the 'http.cfg' file located in the /etc/nagios-plugins/config folder, and commented out the 'check_squid' definition. I saved this and the opened the 'tcp_udp.cfg' file in the same location and added the following lines:

define command{
command_name check_squid
command_line /usr/lib/nagios/plugins/check_tcp -H $HOSTADDRESS$ -p 8080 -4
}

This now means that the port 8080 is being checked directly to see if it's active instead of HTTP traffic being sent to the proxy. Certainly seems to have worked for me. In this instance, Nagios was running on a test Ubuntu system, but it should work just as well on Centos/Red Hat, assuming the plugin config directory is in the same location.