How to install Nagios in ubuntu10.04/10.10(如何安装nagios）

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I- Install Apache, PHP and some needed libraries

First we will install apache , php and needed librairies

Install some necessary compilers using the command :

sudo  apt-get install build-essential

Install GD Libraries using the command :

sudo apt-get install libgd2-xpm-dev

Install Apache2

sudo apt-get install apache2

Install PHP for apache 2 :

sudo apt-get install php5-common php5 libapache2-mod-php5

Now configure Apache to use PHP:

Open apache2.conf file

sudo vi   /etc/apache2/apache2.conf

and add this line

DirectoryIndex index.html index.php index.cgi

Now restart your apache

sudo  /etc/init.d/apache2   restart

II- Install and Configure Nagios :

Now lets install and configure Nagios

First download the latest core nagios from nagios website and before installing create a user to run the service and a group to run external commands:

 * sudo useradd -m nagios * sudo passwd nagios * sudo groupadd nagcmd * sudo usermod -a -G nagcmd nagios * sudo usermod -a -G nagcmd www-data

Now install the Nagios tarballs that were downloaded previously:

tar -zxvf nagios-3.2.1.tar.gz

Then cd the the extracted folder and install

cd nagios-3.2.1sudo ./configure --with-command-group=nagcmdsudo make allsudo make installsudo make install-initsudo make install-configsudo make install-commandmodesudo make install-webconf

Add a user for the Nagios interface:

sudo  mkdir  /usr/local/nagios/etc

Create a new password

sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

Output

New password:
Re-type new password:
pirat9@pirat9-desktop:~/Downloads/nagios-3.2.1$

Now add Nagios directory to apache, first open apache.conf :

sudo vi /etc/apache2/apache.conf

and add these lines :

ScriptAlias /nagios/cgi-bin /usr/local/nagios/sbin

<Directory "/usr/local/nagios/sbin">

Options ExecCGI

AllowOverride None

Order allow,deny

Allow from all

AuthType Basic

AuthUserFile /usr/local/nagios/etc/htpasswd.users

Require valid-user

</Directory>

Alias /nagios /usr/local/nagios/share

<Directory "/usr/local/nagios/share">

Options None

AllowOverride None

Order allow,deny

Allow from all

AuthType Basic

AuthUserFile /usr/local/nagios/etc/htpasswd.users

Require valid-user

</Directory>

save and exit then restart apache2

sudo  /etc/init.d/apache2 restart

Install Nagios Plugins :

Now we have to install Nagios plugins, first download the file from nagios website, then extract it using the command :

tar -zxvf  nagios-plugins-1.4.14.tar.gz

Cd the extracted folder and install the plugins

 cd nagios-plugins-1.4.14 sudo ./configure --with-nagios-user=nagios --with-nagios-group=nagiossudo make sudo make install

Create a link to start the service:

sudo ln -s /etc/init.d/nagios /etc/rcS.d/S99nagiosls -altr

Output

total 20

-rw-r–r– 1 root root 447 2009-09-07 20:58 README

lrwxrwxrwx 1 root root 20 2010-04-04 22:10 S70x11-common -> ../init.d/x11-common

lrwxrwxrwx 1 root root 24 2010-04-04 22:10 S70screen-cleanup -> ../init.d/screen-cleanup

lrwxrwxrwx 1 root root 17 2010-04-04 22:10 S55urandom -> ../init.d/urandom

lrwxrwxrwx 1 root root 23 2010-04-04 22:10 S49console-setup -> ../init.d/console-setup

lrwxrwxrwx 1 root root 18 2010-04-04 22:10 S37apparmor -> ../init.d/apparmor

lrwxrwxrwx 1 root root 16 2010-04-04 22:10 S25brltty -> ../init.d/brltty

lrwxrwxrwx 1 root root 21 2010-04-04 22:10 S13pcmciautils -> ../init.d/pcmciautils

lrwxrwxrwx 1 root root 24 2010-04-04 22:10 S06keyboard-setup -> ../init.d/keyboard-setup

drwxr-xr-x 132 root root 12288 2010-04-15 01:45 ..

lrwxrwxrwx 1 root root 18 2010-04-15 02:09 S99nagios -> /etc/init.d/nagios

drwxr-xr-x 2 root root 4096 2010-04-15 02:09 .

Please before running the configuration check and copy all config files from your nagios directory to /usr/local/nagios/etc/objects/ and /usr/local/nagios/etc/

config file ‘/usr/local/nagios/etc/objects/commands.cfg’…

object config file ‘/usr/local/nagios/etc/objects/contacts.cfg’…

object config file ‘/usr/local/nagios/etc/objects/timeperiods.cfg’…

object config file ‘/usr/local/nagios/etc/objects/templates.cfg’…

object config file ‘/usr/local/nagios/etc/objects/localhost.cfg’…

Verify the config:

sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Output :

Nagios Core 3.2.1

Last Modified: 03-09-2010

License: GPL

Website: http://www.nagios.org

Reading configuration data…

Read main config file okay…

Processing object config file ‘/usr/local/nagios/etc/objects/commands.cfg’…

Processing object config file ‘/usr/local/nagios/etc/objects/contacts.cfg’…

Processing object config file ‘/usr/local/nagios/etc/objects/timeperiods.cfg’…

Processing object config file ‘/usr/local/nagios/etc/objects/templates.cfg’…

Processing object config file ‘/usr/local/nagios/etc/objects/localhost.cfg’…

Read object config files okay…

Running pre-flight check on configuration data…

Checking services…

Checked 8 services.

Checking hosts…

Checked 1 hosts.

Checking host groups…

Checked 1 host groups.

Checking service groups…

Checked 0 service groups.

Checking contacts…

Checked 1 contacts.

Checking contact groups…

Checked 1 contact groups.

Checking service escalations…

Checked 0 service escalations.

Checking service dependencies…

Checked 0 service dependencies.

Checking host escalations…

Checked 0 host escalations.

Checking host dependencies…

Checked 0 host dependencies.

Checking commands…

Checked 24 commands.

Checking time periods…

Checked 5 time periods.

Checking for circular paths between hosts…

Checking for circular host and service dependencies…

Checking global event handlers…

Checking obsessive compulsive processor commands…

Checking misc settings…

Total Warnings: 0

Total Errors: 0

Things look okay – No serious problems were detected during the pre-flight check

pirat9@pirat9-desktop:~/Downloads/nagios-3.2.1$

Now start Nagios:

sudo /etc/init.d/nagios start

Now you are ready to use Nagios, open your browser and type :

   http://hostname/nagios or http://ip/nagios