How to Install and Configure Nagios on CentOS 7

How to Install Nagios Core on CentOS 7

1. Step 1: Connect to your server. ...
2. Step 2: Install LAMP. ...
3. Step 3: Install the required packages. ...
4. Step 4: Download and Install Nagios Core. ...
5. Step 5: Create nagiosadmin User Account. ...
6. Step 6: Install Nagios Plugins. ...
7. Step 7: Accessing Nagios Core.

1. How do I install Nagios monitoring on CentOS 7?
2. How do I set up Nagios?
3. Where are Nagios plugins installed?
4. How do I access Nagios server?
5. How does Nagios monitoring work?
6. What is the latest version of Nagios?
7. How do I know if Nagios is installed?
8. Which OS Nagios can be installed on?
9. How do I add a host to Nagios?
10. Where are Nagios commands stored?
11. How do I use Nagios plugins?
12. How do I download Nagios plugins?

How do I install Nagios monitoring on CentOS 7?

1. Introduction. In this tutorial, we will cover the installation of Nagios 4, a very popular open source monitoring system, on CentOS 7 or RHEL 7. ...
2. Install Build Dependencies. ...
3. Create Nagios User and Group. ...
4. Install Nagios Core. ...
5. Install Nagios Plugins. ...
6. Install NRPE. ...
7. Organize Nagios Configuration. ...
8. Configure Nagios Contacts.

How do I set up Nagios?

Installing Nagios

1. Update the system and install the required packages: ...
2. Create a user to run Nagios: ...
3. Download the sources of Nagios, untar them and enter the directory: ...
4. Before compiling the software, define the user and group to use: ...
5. Compile the software: ...

Where are Nagios plugins installed?

Plugins are located in the /usr/local/nagios/libexec directory.

How do I access Nagios server?

Open your favorite web browser, and go to your Nagios server by visiting http://nagios_server_public_ip/nagios . Enter the login credentials for the web interface in the popup that appears. Use nagiosadmin for the username, and the password you created for that user.

How does Nagios monitoring work?

Nagios runs on a server, usually as a daemon or a service. It periodically runs plugins residing on the same server, they contact hosts or servers on your network or on the internet. One can view the status information using the web interface. You can also receive email or SMS notifications if something happens.

What is the latest version of Nagios?

The latest version of Nagios Core is 4.4. 6 was released on 2020-04-28.

How do I know if Nagios is installed?

Easiest way to check the Nagios Core version is using the Nagios GUI. ~]# /usr/local/nagios/bin/nagios –help Nagios Core 4.1.

Which OS Nagios can be installed on?

The Nagios Cross Platform Agent is an open source project maintained by Nagios Enterprises. NCPA installs on Windows, Linux, and Mac OS X.

How do I add a host to Nagios?

Open main Nagios configuration file and insert the line, cfg_dir=/usr/local/nagios/etc/objects/kifarunix-demo under the OBJECT CONFIGURATION FILE(S) section. Next, create your host object definition file. Next, define you hosts details such as hostname, IP address and the host template to use.

Where are Nagios commands stored?

The main configuration file is usually named nagios. cfg and located in the /usr/local/nagios/etc/ directory.

How do I use Nagios plugins?

Guidelines for Writing Custom Nagios Plugins

1. Plugins should provide a "-V" command-line option (verify the configuration changes)
2. Print only one line of text.
3. Print the diagnostic and only part of the help message.
4. Network plugins use DEFAULT_SOCKET_TIMEOUT to timeout.
5. "-v", or "--verbose“ is related to verbosity level.

How do I download Nagios plugins?

Nagios plugins tutorial: downloading and installing plugins

1. cd ~/download tar xzf nagios-plugins-2.1.2.tar.gz. mixed.
2. cd nagios-plugins-2.1.2. mixed.
3. ./configure --with-nagios-user=nagios --with-nagios-group=Nagios make make install. mixed.
4. cd /usr/local/nagios/libexec ./name_des_plugins -h. mixed.