Nagios is a popular open source computer system and network monitoring software application. It watches hosts and services, alerting users when things go wrong and again when they get better.
Nagios was originally designed to run under Linux, but also runs well on other Unix variants. It is free software, licensed under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.
First thing to do is to install Lamp on Arck to activate apache or php
Download tarballs from AUR ArchLinux (Nagios and Nagios-plugins)
Download nagios from : http://aur.archlinux.org/packages.php?ID=12306
Dwonload nagios-plugins : http://aur.archlinux.org/packages.php?ID=12307
Install developemnt packages
[root@localhost ~]# pacman -S base-devel
Output
:: There are 11 members in group base-devel:
:: Repository core
1) autoconf 2) automake 3) bison 4) fakeroot 5) flex 6) gcc 7) libtool
8) m4 9) make 10) patch 11) pkg-config
Enter a selection (default=all):
Extract nagios and nagios plugin from AUR and install them
tar -zxvf nagios.tar.gz
Now cd Nagios directory
cd nagios
Install and download nagios , download and install also dependencies if needed
[root@localhost nagios]# makepkg -s --asroot
Output
==> Making package: nagios 3.2.3-1 (Mon Jun 27 19:54:04 GMT 2011)
==> Checking runtime dependencies…
==> Checking buildtime dependencies…
==> Retrieving Sources…
-> Downloading nagios-3.2.3.tar.gz…
After this step, a new file will be generated in the same directory : nagios-3.2.3-1-i686.pkg.tar.xz
Install this file using the command:
pacman -U nagios-3.2.3-1-i686.pkg.tar.xz
Now do the same with Nagios plugin
Download , extract and install
tar -zxvf nagios-plugins.tar.gz; cd nagios-plugin
makepkg -s --asroot
pacman -U nagios-plugins-1.4.15-1-i686.pkg.tar.xz
II Nagios Configuration
Copy the sample config files as root:
cp /etc/nagios/cgi.cfg.sample /etc/nagios/cgi.cfg
cp /etc/nagios/resource.cfg.sample /etc/nagios/resource.cfg
cp /etc/nagios/nagios.cfg.sample /etc/nagios/nagios.cfg
cp /etc/nagios/objects/commands.cfg.sample /etc/nagios/objects/commands.cfg
cp /etc/nagios/objects/contacts.cfg.sample /etc/nagios/objects/contacts.cfg
cp /etc/nagios/objects/localhost.cfg.sample /etc/nagios/objects/localhost.cfg
cp /etc/nagios/objects/templates.cfg.sample /etc/nagios/objects/templates.cfg
cp /etc/nagios/objects/timeperiods.cfg.sample /etc/nagios/objects/timeperiods.cfg
Make owner/group for all the files to nagios/nagios:
chown -R nagios:nagios /etc/nagios
Create htpasswd.users file with a username and password, eg. admin and insert you chosen password
htpasswd -c /etc/nagios/htpasswd.users admin
change the owner and group of this directorychown -R nagios:nagios /usr/share/nagios
Download SNMP
pacman -S net-snmp
Targets (1): net-snmp-5.6.1-1
Total Download Size: 2.08 MB
Total Installed Size: 13.09 MB
Proceed with installation? [Y/n] y
you can add snmpd to /etc/rc.conf to start with system next time under DAEMON=
Start Nagios
/etc/rc.d/nagios restart
You can add nagios to /etc/rc.conf to start with system next time unde DAEMON=
III Apache Configuration
Edit /etc/httpd/conf/httpd.conf, add the following
# nagios Include /etc/httpd/conf/extra/nagios.conf
Add the apache user http to the group nagios, otherwise you will get the following error when using nagios:
Could not open command file '/var/nagios/rw/nagios.cmd' for update!:
Add user to apache using the command:
# usermod -G nagios -a http
VI PHP Configuration
Edit /etc/php/php.ini to include /usr/share/nagios in the open_basedir directive.
Example configuration:
open_basedir = /srv/http/:/usr/share/nagios
ARE YOU READY
restart apache and nagios
rc.d restart snmpd
rc.d sretart httpd
rc.d restart nagios
Start the browser http://ip/nagios or http://hostname/nagios
and login with your login and password
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