How to Install Nagios on CentOS 7


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How to Install Nagios on CentOS 7

Nagios is an open source monitoring system that allows you to monitor the performance and availability of network services, servers, and other devices. It provides a wide range of monitoring options, including monitoring of network services (HTTP, FTP, SSH, etc.), system metrics (CPU, memory, disk space, etc.), and application performance. Nagios is highly extensible and customizable, making it a popular choice among system administrators and IT professionals.

If you are using CentOS 7, you can follow the steps below to install Nagios:

sudo yum update
sudo yum install httpd php gcc glibc glibc-common make gettext automake autoconf wget openssl-devel net-snmp net-snmp-utils epel-release unzip
sudo useradd nagios sudo groupadd nagcmd sudo usermod -a -G nagcmd nagios
cd ~ wget https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.6.tar.gz wget https://www.nagios-plugins.org/download/nagios-plugins-2.3.3.tar.gz
tar -zxvf nagios-4.4.6.tar.gz tar -zxvf nagios-plugins-2.3.3.tar.gz
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
sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
sudo systemctl start httpd sudo systemctl start nagios

Now, you can access the Nagios web interface by opening your web browser and navigating to "http://your_server_ip/nagios". Log in with the Nagios admin username and password you created earlier.

  1. Update the system:
  2. Install required dependencies:
  3. Create a nagios user and group:
  4. Download Nagios and its plugins:
  5. Extract the downloaded archives:
  6. Compile and install Nagios:
  7. Create a Nagios admin user:
  8. Start the Apache web server and Nagios service:
  9. Access Nagios web interface:

With Nagios successfully installed, you can now configure it to monitor your network services, servers, and devices according to your specific needs.

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