Teaches you how to perform initial configuration installation for Nagios 3.0

NagiosYou can use snmp, nrpe, and nsclient to obtain information. More importantly, you can use the latter and use its powerful plug-in module. Cacti Uses snmp and does not need to install an agent. It is generally used to monitor network traffic. Nagios is generally used to monitor processes and services.

Nagios installation environment:

Host	Operating System	IP	Remarks
Nagios-server	RHEL 4	192.168.112.30	Monitoring Server
Server	RHEL 4	192.168.112.112	Monitored LINUX host
Win2003-server	Windows 2003	192.168.112.113	Monitored Windows Host

Monitoring status defined by Nagios

Nagios defines the monitoring status in 4, which indicates different severity levels. Besides OK, it indicates that the monitoring status is normal and does not need to be concerned.

Status	Code	Color
Normal	OK	Green,
Warning	WARNING	Yellow,
Severe	CRITICAL	Red,
Unknown error	UNKOWN	Dark yellow

Software Used

Nagios-3.0.2.tar.gz (Nagios Main Program)

Nagios-plugins-1.4.13.tar.gz Nagios plug-in)

Nrpe-2.8.1.tar.gz Nix client communication program)

NSClient ++-Win32-0.3.5 Win client communication program)

Apache (httpd-2.2.10.tar) Web Service)

Install nagios-server

 
 

  
  
Useradd nagios
  
  
 
  
  
Mkdir/usr/local/nagios
  
  
 
  
  
Chown nagios. nagios/usr/local/nagios
  
  
 
  
  
Tar zxvf nagios-3.0.2.tar.gz
  
  
 
  
  
Cd nagios-3.0.2
  
  
 
  
  
./Configure -- prefix =/usr/local/nagios -- with-gd-lib =/usr/local/lib -- with-gd-inc =/usr/local/include/
  
  
 
  
  
Make all
  
  
 
  
  
Make install (install the main program, CGI and HTML files)
  
  
 
  
  
Make install-init (install the startup script in/etc/rc. d/init. d)
  
  
 
  
  
Make install-commandmode (configure directory permissions for external command files)
  
  
 
  
  
Make install-config (installation sample configuration file)
  
  
 
  
  
# Make install-webconf (install the Nagios interface configuration file template. This template must be manually added to httpd. conf to take effect. Default installation path: before installing/etc/httpd/conf. d, run mkdir/etc/httpd/conf. d-p)
 
 

Then verify that the program is correctly installed. Switch the directory to the installation path:/usr/local/nagios. check whether there are five directories, including etc, bin, sbin, share, and var, if yes, it indicates that the program has been correctly installed to the system. The following table provides a brief description of the five directory functions:

Bin	The directory where the Nagios executable program is located. The nagios file is the main program.
Etc	Location of the Nagios configuration file. After the initial installation, there are only a few *. cfg files.
Sbin	The directory where the Nagios Cgi file is located, that is, the directory where the file needed to execute External commands is located
Share	Nagios webpage file directory
Var	Directory where Nagios log files, spids, and other files are located
Var/archives	Empty directory created for archived logs
Var/rw	Empty directory created for external command file

The initial installation and configuration of nagios is so much. If you are interested, you can continue to read nagios-related articles:

Install and configure nagios, modify Apache configurations, monitor Linux servers, monitor Windows servers, and solve ten Nagios faults