How to Install Nagios on OpenSUSE Latest

Nagios is a powerful open-source monitoring system that helps to identify and resolve critical issues in your IT infrastructure. This tutorial provides step-by-step instructions on how to install Nagios on OpenSUSE Latest.

Prerequisites

Before you begin, make sure you have the following:

• A running instance of OpenSUSE Latest
• A root user or a user with sudo privileges

Step 1: Install Required Packages

The first step is to install the required packages for Nagios. Open the terminal and run the following command:

sudo zypper install apache2 php7 php7-gd php7-ldap php7-mbstring php7-mysql php7-sockets gcc glibc glibc-devel gd gd-devel openssl-devel make net-snmp net-snmp-devel wget tar

Step 2: Download and Unpack Nagios

Next, download the latest version of Nagios from the official website. You can download the package using the wget command as follows:

wget https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.6.tar.gz

Once the download is complete, unpack the Nagios tarball using the tar command:

tar -zxvf nagios-4.4.6.tar.gz

Step 3: Configure and Compile Nagios

Now that you have unpacked Nagios, it's time to configure and compile it. Run the following commands in the terminal:

cd nagioscore-nagios-4.4.6/
./configure --with-command-group=nagcmd
make all
sudo make install
sudo make install-init
sudo make install-commandmode
sudo make install-config
sudo make install-webconf

Step 4: Create Nagios Admin User and Set Password

After installing Nagios, you need to create an admin user for Nagios. You can create the user using the following command:

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

You can set the password for the admin user by entering and confirming the password when prompted.

Step 5: Configure Apache for Nagios

Finally, you need to configure Apache to serve Nagios. Run the following command to create a config file for Nagios:

sudo nano /etc/apache2/conf.d/nagios.conf

Add the following lines to the file:

ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"
<Directory "/usr/local/nagios/sbin">
   Options ExecCGI
   AllowOverride None
   Order allow,deny
   Allow from all
</Directory>
Alias /nagios "/usr/local/nagios/share"
<Directory "/usr/local/nagios/share">
   Options None
   AllowOverride None
   Order allow,deny
   Allow from all
</Directory>

Save and close the file. Next, restart Apache:

sudo systemctl restart apache2

Step 6: Access Nagios Web Interface

You can now access the Nagios web interface by visiting http://<your-server-IP>/nagios. Log in using the admin user you created in Step 4, and you should see the Nagios dashboard.

Conclusion

Congratulations, you have successfully installed Nagios on OpenSUSE Latest. You can now use Nagios to monitor your IT infrastructure and receive alerts when issues arise.

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