Ubuntu Linux - Nagios Nagios Setup - Part 1

nagios.

sudo apt-get update
sudo apt-get install build-essential libgd2-xpm-dev openssl libssl-dev xinetd apache2-utils unzip
sudo useradd nagios
sudo groupadd nagcmd
sudo usermod -a -G nagcmd nagios
apt-get update
apt-get install build-essential libgd2-xpm-dev openssl libssl-dev xinetd apache2-utils unzip

cd /tmp/
tar xvf nagios-plugins-2.1.1.tar.gz
cd nagios-plugins-2.1.1/
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl
make
make install
cd ..

wget https://vorboss.dl.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.15/nrpe-2.15.tar.gz
tar xvf nrpe-2.15.tar.gz
cd nrpe-2.15/
./configure --enable-command-args --with-nagios-user=nagios --with-nagios-group=nagios --with-ssl=/usr/bin/openssl --with-ssl-lib=/usr/lib/x86_64-linux-gnu
make all
make install
make install-xinetd
make install-daemon-config
service xinetd restart
service xinetd stop
service xinetd status
service xinetd start
service xinetd status

# check if memory command works :
/usr/local/nagios/libexec/mem_check.py -W 50 -C 87
#if no, download it :
apt-get install python-psutil

#if experiencing problems:
sudo dpkg --configure –a
apt-get update
apt-get install python-psutil

#check if mem_check.py exists, if no find it on the internet
# try it :
/usr/local/nagios/libexec/mem_check.py -W 60 -C 70

#if not works, set appropriate permissions :
ls -al /usr/local/nagios/libexec/mem_check.py
chmod 775 /usr/local/nagios/libexec/mem_check.py
#try it again :
/usr/local/nagios/libexec/mem_check.py -W 60 -C 70

/etc/init.d/xinetd restart