Nagios - Revision history

Boiarino: /* RHEL9 */

2026-03-21T13:51:24Z

RHEL9

← Older revision		Revision as of 09:51, 21 March 2026
Line 7:		Line 7:

	Config file is ''/etc/nagios/nagios.cfg'' and underlyiong directories.		Config file is ''/etc/nagios/nagios.cfg'' and underlyiong directories.

			Access from web browser:

			http://<machine_name>.jlab.org/nagios
			default user/pass: nagiosadmin/nagiosadmin

	== old stuff ==		== old stuff ==

Boiarino: /* RHEL9 */

2026-03-21T13:42:45Z

RHEL9

← Older revision		Revision as of 09:42, 21 March 2026
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	systemctl start httpd		systemctl start httpd
	systemctl start nagios		systemctl start nagios

			Config file is ''/etc/nagios/nagios.cfg'' and underlyiong directories.

	== old stuff ==		== old stuff ==

Boiarino: /* RHEL9 */

2026-03-21T13:39:33Z

RHEL9

← Older revision		Revision as of 09:39, 21 March 2026
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	yum install nagios		yum install nagios

			systemctl start httpd
			systemctl start nagios

	== old stuff ==		== old stuff ==

Boiarino at 13:35, 21 March 2026

2026-03-21T13:35:07Z

← Older revision		Revision as of 09:35, 21 March 2026
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			== RHEL9 ==

			yum install nagios


			== old stuff ==

	Nagios is main monitoring tool for CLON cluster.		Nagios is main monitoring tool for CLON cluster.

129.57.167.26 at 18:50, 28 September 2012

2012-09-28T18:50:54Z

← Older revision		Revision as of 14:50, 28 September 2012
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	NO !!! su nagios		NO !!! su nagios
	./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd		./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd
	??did on RHEL6: ./configure --prefix=/www/~~nagios2~~.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagcmd --with-command-group=nagcmd		??did on RHEL6: ./configure --prefix=/www/nagios-3.4.1 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagcmd --with-command-group=nagcmd
	make all		make all
	make install		make install

129.57.167.26 at 18:50, 28 September 2012

2012-09-28T18:50:33Z

← Older revision		Revision as of 14:50, 28 September 2012
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	NO !!! su nagios		NO !!! su nagios
	./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd		./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd
			??did on RHEL6: ./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagcmd --with-command-group=nagcmd
	make all		make all
	make install		make install

98.166.92.51 at 04:51, 26 February 2010

2010-02-26T04:51:24Z

← Older revision		Revision as of 00:51, 26 February 2010
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	tar xvf nagios-2.6.tar		tar xvf nagios-2.6.tar
	cd '/usr/local/src/nagios-2.6'		cd '/usr/local/src/nagios-2.6'
	su nagios		NO !!! su nagios
	./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd		./configure --prefix=/www/nagios2.6 --with-cgiurl=/nagios/cgi-bin --with-htmurl=/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-command-group=nagcmd
	make all		make all

Boiarino at 18:39, 16 May 2007

2007-05-16T18:39:25Z

← Older revision		Revision as of 14:39, 16 May 2007
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	chown nagios:nagcmd /www/nagios2.6/var/log/nagios.cmd		chown nagios:nagcmd /www/nagios2.6/var/log/nagios.cmd

	'''ADDITIONAL INFO (COPIED FROM ~~SOMEBODIES WEB SITES~~):'''		'''ADDITIONAL INFO (COPIED FROM http://klickitat.ee.washington.edu/medg/software/nagios-install-notes.txt):'''

	some notes on installing nagios - these are a supplement to the basic		some notes on installing nagios - these are a supplement to the basic

Boiarino at 18:38, 16 May 2007

2007-05-16T18:38:18Z

← Older revision		Revision as of 14:38, 16 May 2007
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	chown nagios:nagcmd /www/nagios2.6/var/log/nagios.cmd		chown nagios:nagcmd /www/nagios2.6/var/log/nagios.cmd

			'''ADDITIONAL INFO (COPIED FROM SOMEBODIES WEB SITES):'''

			some notes on installing nagios - these are a supplement to the basic
			nagios documentation that comes with the software:

			Download and install the nagios and nagios-plugin packages. For whatever reason
			www.nagios.org seems to be hosed now (7/23/2004), but look on google. There
			is also sourceforge.nagios.net, which seems to be another nagios homepage.

			Create a nagios user. Compile and install the packages as described in the
			documentation. Redhat
			has all necessary libraries already installed. I just went with the defaults
			in the compilation. The default is for nagios to install itself in
			/usr/local/nagios; everything should be owned by user nagios.

			To enable the web interface, edit httpd.conf to add the Alias and
			ScriptAlias directives as
			described in the nagios documentation. This works for both apache 1.3 and
			apache 2.0. Restart apache. At this point you should be able to go to
			http://www.whatever/nagios/ and see the nagios page and access the
			documentation. CGIs probably won't work.

			You need to set up the config files; this is the real heart of installing
			nagios and unfortunately is much easier to show than to describe. The first
			step is to copy the *.cfg-sample files that should be in /usr/local/nagios/etc
			to *.cfg. Then you need to edit these files to describe your setup.

			Basically, hosts.cfg describes the hosts you want to monitor, services.cfg
			describes the services you want to monitor on each host, checkcommands.cfg
			is the check commands used by services.cfg to check the services; if you want
			to check a service you probably have to add a command to do so; contacts.cfg
			is the people who will be contacted in case of a problem, contactgroups
			is the groups of people, hostgroups.cfg is the groups of hosts (rrsl-machines,
			for example). nagios.cfg is the master config file. Probably you can get
			by just by copying and pasting the stuff already in these files and tweaking
			it.

			To add a new machine you will need to edit hosts.cfg (add the machine),
			hostgroups.cfg (put it in a hostgroup), services.cfg (add the services to
			be checked on the machine).

			To add a new administrator, you will need to edit contacts.cfg (add the new
			person) and contactgroups.cfg (put them in a contact group or create one).

			In misccommands.cfg I needed to change /usr/bin/mail to /bin/mail on redhat
			-- but not on slackware! Otherwise it was not able to mail messages.

			At this point you can check your config using the
			'/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg' command,
			which does a check of the configuration and will warn if there are errors.
			Fix the errors and repeat until it is happy.

			Now you need to enable authorization so that the cgi scripts will work. To
			do this first create the
			.htaccess file in the nagios/sbin directory as described in the
			documentation - it must be world-readable.

			Next create the htpasswd.users file in the nagios/etc directory as described in
			the documentation - it must be world-readable! I added only one user: rrsl

			At this point you should be able to start nagios using:
			/usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg

			After nagios is started you should be able to go to the web page and
			use the cgis to display info. The final step is enabling the external command
			cgis, which let you change the behavior of nagios from the web. To do this
			you have to follow the steps in the documentation to enable external commands
			This involves enabling external commands in the config file and specifying
			an external commands file....

			The permissions on the file seem to be a source of problems.
			To enable external commands you have to first create a group containing
			the nagios user and the user httpd runs as (apache for us). Then you create
			the directory /usr/local/nagios/var/rw with permissions:
			drwxrwsr-x 2 nagios nagioscmd 4096 Aug 3 13:55 rw

			That's rwx permissions for the user and rws permissions for the group
			chmod gu+rwx nagios.nagioscmd rw
			chmod g+s rw
			Then you have to restart both apache and nagios, or it doesn't work!

			The documentation describes some other gotchas..

			To run checks for services on remote machines, you need to set up ssh to
			log in without a password. To do this run
			$ ssh-keygen -t rsa
			to create a public/private key pair. copy the public key into the
			~/.ssh/authorized_keys file of the user nagios on the remote host. This file
			must only be rw by nagios or ssh will not work. The directory .ssh must also
			be only rwx by nagios. Then you should be able
			to ssh to the remote host as nagios without giving a password.

			Copy the plugins you want to run on the remote host to the remote host,
			and then set up checks in checkcommands.cfg, and services.cfg. See the
			check-host-radar command for an example. The plugins can be any kind of
			program.

			Many plugins were timing out after ten seconds when checking on heimdal and
			umtanum. Although there claimed to be a command line option to change this,
			in practice there was not. Therefore, I changed the source to set the timeout
			to 30sec and recompiled the plugins. This appears to work. (7/26/04)

			nagios comes with the file /etc/rc.d/init.d/nagios, which is a script for
			starting nagios from rc.local or from the command line as root (or by
			sudo). This seems to be the best way of starting or stopping the program.

			sudo /etc/rc.d/init.d/nagios start
			sudo /etc/rc.d/init.d/nagios stop
			etc.

			nagios has the ability to acknowledge a host condition, so if a host
			is down, you can "acknowledge" through the web interface, and it will
			stop sending email unless the host changes state. This is useful.
			You can also disable notification for a service, which is handy


			Adding a user to the web interface:

			1) edit cgi.cfg to add the user to the actions that you want them to do
			2) edit sbin/.htaccess to add the user to the list of ok users, eg:
			require user rrsl radar
			for users rrsl and radar being able to access the web interface
			Keep in mind this file must be world readable...
			3) issue htpasswd /usr/local/nagios/etc/htpasswd.users <new user> as root, to
			create the new user and password
			4) stop nagios
			5) restart the web server
			6 start nagios

			It should work, you should be able to log in and do stuff.

Boiarino at 00:15, 7 January 2007

2007-01-07T00:15:18Z

← Older revision		Revision as of 20:15, 6 January 2007
Line 49:		Line 49:


	Install plugins and nrpe - see corresponding sections/		Install plugins and nrpe - see corresponding sections.

	~~Extra plagins (nrpe):~~

	~~cd /usr/local/src/nrpe-2.6~~
	~~./configure~~
	~~make all~~
	~~cp src/check_nrpe /www/nagios2.6/libexec~~
	~~chown nagios.nagios /www/nagios2.6/libexec/check_nrpe~~

	~~Create a command definition in your Nagios config~~
	~~file for the NRPE client. See the README file for~~
	~~more info on doing this.~~

	~~NOTE: remote host(s) must be running the NRPE daemon !!!~~
	~~- Copy the nrpe daemon to /usr/sbin, /apps/nagios2.6~~
	~~or wherever you feel it fits best.~~
	~~- Copy the sample nrpe.cfg config file to /etc,~~
	~~/apps/nagios2.6 or wherever you feel it fits best.~~
	~~- Modify the /etc/services file and configure NRPE to~~
	~~run under inetd, xinetd, or as a standalone daemon.~~
	~~See the README file for more info on doing this~~.