nagios

mhmfasy · 02-17-2006, 01:35 AM

hi,
can anyone help me how to install "NAGIOS". some say it is the best network monitoring tool. i am using debian 2.6 kernel. once i tried to install by #apt-get install nagios-common , it got installed but cant run, or i want to know how to make it run.

fasy

jcliburn · 02-17-2006, 08:14 AM

I recently installed Nagios on a little test server here at home, just to see it in action. It's not for the faint of heart, and my distro is Fedora 4, but I'd be happy to share with you any of my config settings. I have it monitoring a single host -- the host the server is installed on -- not multiple hosts. I got sidetracked onto something else before I could get it set up on a second host.

In general, you'll need a nagios server that runs apache, and you'll need to install the nagios plugins that provide the commands nagios uses to monitor processes, network connections, and so on.

mhmfasy · 02-20-2006, 02:13 AM

hi jclburn,

thanx alot for your reply. i understand what you said. but, can you pls. give it detail how to start working on nagios.i installed it and the nagios service is running. but i can't get the monitoring screen. may be there is a command for that? pls. can you give it in detail.

regds,
fay

jcliburn · 02-20-2006, 06:39 AM

What did you use for Alias and ScriptAlias directives for nagios in httpd.conf? Should look something like this:

ScriptAlias /nagios/cgi-bin/ /usr/lib/nagios/cgi-bin/

Alias /nagios/ /usr/share/nagios/html/

In order to access nagios from a remote host, I point my browser to http://petrel/nagios/cgi-bin/status.cgi (petrel is the hostname of my test server).

Dmjmusser · 02-20-2006, 09:49 AM

I've been using Nagios for about 4-5 months now and it really is an incredible tool, though I know I've just barely scratched the surface in using it. You can monitor almost anything on local and remote hosts like ping and http services. You can even run disk and CPU load checks on remote hosts. Awesomeness.

There is actually a forum dedicated to Nagios which I know you will find helpful. I am registered there under the username SonOfThunder. I'll be happy to help you as well, and there are many many people there that can help you.

As a beginner's tip, do not install the beta versions of Nagios, or even the quote, un-quote "stable" 2.0 version, as the documentation is incomplete. The 1.X stable releases would be your best choice for now.

Hope to see you there!

~Myles

Dmjmusser · 02-20-2006, 10:03 AM

Quote:

Originally Posted by mhmfasy

hi jclburn,

thanx alot for your reply. i understand what you said. but, can you pls. give it detail how to start working on nagios.i installed it and the nagios service is running. but i can't get the monitoring screen. may be there is a command for that? pls. can you give it in detail.

regds,
fay

Actually, if you've configured things correctly, pointing a browser to http://nagiosserver/cgi-bin/ should give you a Forbidden Error. You access the CGI's through the main web interface, which should be accessed as http://nagiosserver/nagios.

~Myles

jcliburn · 02-20-2006, 03:23 PM

Quote:

Originally Posted by Dmjmusser

Actually, if you've configured things correctly, pointing a browser to http://nagiosserver/cgi-bin/ should give you a Forbidden Error. You access the CGI's through the main web interface, which should be accessed as http://nagiosserver/nagios.

~Myles

Mine behaves just the opposite; I get the forbidden error when I access nagios, but accessing cgi-bin directly works just fine. Goes to show that I don't really have a good handle on it yet.

Dmjmusser · 02-20-2006, 05:34 PM

Quote:

Originally Posted by jcliburn

Mine behaves just the opposite; I get the forbidden error when I access nagios, but accessing cgi-bin directly works just fine. Goes to show that I don't really have a good handle on it yet.

Hm...well, looking at what you've posted, I can see you set up your ScriptAlias wrong. You've made up a directory that, in your directory structure, should not exist. Also, you need quite a bit more than just those two lines (unless you're not showing your entire config for your web interface. Here's how the two aliases should be set up:

#Create an Alias for Nagios CGIs.
ScriptAlias /nagios/cgi-bin /usr/local/nagios/sbin
<Directory "/usr/local/nagios/sbin">
AllowOverride AuthConfig
Options ExecCGI
Order allow,deny
Allow from all
</Directory>

#Make HTML files accessible via Apache web server.
Alias /nagios /usr/local/nagios/share
<Directory "/usr/local/nagios/share">
Options None
AllowOverride AuthConfig
Order allow,deny
Allow from all
</Directory>

Hope this helps. If not, check out http://nagios.meulie.net Lots of help to be found there.

~Myles