MBCDN

sudo apt install -y autoconf gcc libc6 make wget unzip apache2 php libapache2-mod-php libgd-dev

cd /tmp
wget -O nagioscore.tar.gz https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.6.tar.gz
tar xzf nagioscore.tar.gz

cd /tmp/nagioscore-nagios-4.4.6/
sudo ./configure --with-httpd-conf=/etc/apache2/sites-enabled
sudo make all

sudo make install-groups-users
sudo usermod -a -G nagios www-data

sudo make install
sudo make install-daemoninit
sudo make install-commandmode
sudo make install-config

sudo make install-webconf
sudo a2enmod rewrite
sudo a2enmod cgi

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

service nagios start

# Plugins
sudo apt-get install -y autoconf gcc libc6 libmcrypt-dev make libssl-dev wget bc gawk dc build-essential snmp libnet-snmp-perl gettext

cd /tmp
wget --no-check-certificate -O nagios-plugins.tar.gz https://github.com/nagios-plugins/nagios-plugins/archive/release-2.3.3.tar.gz
tar zxf nagios-plugins.tar.gz
cd nagios-plugins-release-2.3.3/

sudo ./tools/setup
sudo ./configure
sudo make
sudo make install

Die Hauptkonfiguration von nagios befindet sich unter

/usr/local/nagios/etc/nagios.cfg

und die Konfigurationen für die zu überwachenden Objekte im Unterordner „objects“.

/usr/local/nagios/etc/objects/

Möchte man weitere Hosts anlegen so muss man nagios diese mitteilen. Dazu legt man eine Konfigurationsdatei an, z.B „my-host.cfg“.

define host {
    host_name myhost.example.com
    alias myhost
    address 192.168.0.2
    max_check_attempts 3
    check_period 24x7
    check_command check-host-alive
    contacts nagiosadmin
    notification_interval 60
    notification_period 24x7
}

und schreibt diese in die Hauptkonfiguration.

cfg_dir=/usr/local/nagios/etc/objects/my-host.cfg

Nachdem man eine Konfiguration geändert hat den Service neu laden.

Möchte man nun einen Service auf dem neuen Host überwachen, muss man die Konfiguration bearbeiten.

define service {
    use local-service    ; service template to use
    host_name myhost
    service_description HTTP
    check_command check_http
    notifications_enabled 0
}

• https://support.nagios.com/kb/article/nagios-core-installing-nagios-core-from-source-96.html
• https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/3/en/toc.html
• https://www.linuxtechi.com/add-windows-linux-host-to-nagios-server/
• https://subscription.packtpub.com/book/networking-and-servers/9781849515566/1/ch01lvl1sec09/creating-a-new-network-host
• https://kifarunix.com/add-hosts-to-nagios-server-for-monitoring/
• https://www.thomas-krenn.com/de/wiki/Nagios_Installation_in_Debian_5.0_Lenny
• https://www.youtube.com/watch?v=Uzo6yiJG6dc