sudo su
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get upgrade -y
apt-get dist-upgrade -y
apt-get autoremove -y
apt-get install build-essential libgd2-xpm-dev openssl libssl-dev apache2-utils apache2 php -y
apt-get install wget php apache2-mod-php7.0 php-gd libgd-dev sendmail unzip -y
dd if=/dev/zero of=/swap bs=1024 count=2097152
mkswap /swap && sudo chown root. /swap && sudo chmod 0600 /swap && sudo swapon /swap
sh -c "echo /swap swap swap defaults 0 0 >> /etc/fstab"
sh -c "echo vm.swappiness = 0 >> /etc/sysctl.conf && sysctl -p"
useradd nagios
groupadd nagcmd
usermod -a -G nagcmd nagios
cd /root
curl -L -O https://sourceforge.net/projects/nagios/files/nagios-4.x/nagios-4.3.4/nagios-4.3.4.tar.gz
tar xvf nagios-*.tar.gz
cd nagios-4.*
./configure --with-nagios-group=nagios --with-command-group=nagcmd
make all
make install
make install-commandmode
make install-init
make install-config
/usr/bin/install -c -m 644 sample-config/httpd.conf /etc/apache2/sites-available/nagios.conf
cd ../
curl -L -O http://nagios-plugins.org/download/nagios-plugins-2.2.1.tar.gz
tar xvf nagios-plugins-*.tar.gz
cd nagios-plugins-*
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl
make
make install
nano /usr/local/nagios/etc/nagios.cfg
Remove the hashtag in front of this line.
----------------------------------------
Before --
#cfg_dir=/usr/local/nagios/etc/servers
After --
cfg_dir=/usr/local/nagios/etc/servers
mkdir /usr/local/nagios/etc/servers
Add Your Email
--------------
nano /usr/local/nagios/etc/objects/contacts.cfg
a2enmod rewrite cgi
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
ln -s /etc/apache2/sites-available/nagios.conf /etc/apache2/sites-enabled/
service nagios start
service apache2 restart
ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios
nano /usr/local/nagios/etc/servers/monitor1.cfg
define host {
use linux-server
host_name monitor1
alias My first monitoring server.
address PRIVATE_IP_NAGIOS_SERVER
max_check_attempts 5
check_period 24x7
notification_interval 30
notification_period 24x7
}
define service {
use generic-service
host_name monitor1
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}
service nagios reload
sudo su
apt-get update
apt-get upgrade -y
apt-get dist-upgrade -y
apt-get autoremove -y
apt-get install nagios-plugins nagios-nrpe-server -y
nano /etc/nagios/nrpe.cfg
Edit
----
allowed_hosts=127.0.0.1 PRIVATE_IP_NAGIOS_SERVER
service nagios-nrpe-server restart