Configuring Nagios Client : NRPE Plugin
We have discussed how to "Install Nagios Core on Amazon Linux Instance ". Please check the link for reference : http://linuxhotcoffee.blogspot.in/2016/03/installing-nagios-core-on-amazon-linux.html
My current Infrastructure details is given below : OS & Private IP
Monitoring Server : Amazon Linux Instance (10.10.1.100)
Client Server : Ubuntu (10.10.1.10)
Create User nagios and install below mentioned package
sudo useradd -m nagios
sudo apt-get install libssl-dev openssl xinetd build-essential
Now lets configure Monitoring server . Install NRPE on monitoring server.You can download the latest version of NRPE from Official Download page.Current latest version is NRPE 2.15 .Download the latest release using wget
cd ~
wget http://downloads.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.15/nrpe-2.15.tar.gz
wget http://nagios-plugins.org/download/nagios-plugins-2.1.1.tar.gz
Extract the tar file
tar -xvzf nrpe-2.15.tar.gz
tar xzf nagios-plugins-2.1.1.tar.gz
Change the directory to
cd nagios-plugins-2.1.1/
Compile and install Plugin
./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl
make
make install
Change the directory to
cd nrpe-2.15/
./configure --with-ssl=/usr/bin/openssl --with-ssl-lib=/usr/lib/x86_64-linux-gnu
make install-plugin
make install-daemon
make install-daemon-config
make install-xinetdNow modify the "only_from" line in /etc/xinetd.d/nrpe
vi /etc/xinetd.d/nrpe
only_from = 127.0.0.1 10.10.1.1000
Restart the xinetd service
service xinetd restart
Configuration on Nagios Monitor server is completed ,now we can move with configuration of Client Server
Install Nagios plugin and NRPE on Client Server
apt-get install nagios-plugins nagios-nrpe-server
apt-get install nagios-plugins nagios-nrpe-server
Configure the Monitor Server ip on client nrpe.cfg file
vi /etc/nagios/nrpe.cfg
find allowed_hosts section in the file and add like the following
allowed_hosts=127.0.0.1,10.10.1.100
allowed_hosts=127.0.0.1,10.10.1.100
Restart then NRPE Service
service nagios-nrpe-server restart
Great Article
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