A brief guild to install nagios

1. ports install nagios and nagios plugin

2. add web login accounts
/usr/local/apache/bin/htpasswd -c /usr/local/etc/nagios/htpasswd.users nagiosadmin

或 /usr/local/apache/bin/htpasswd /usr/local/etc/nagios/htpasswd.users nagios_user2

3. edit httpd.conf
# Nagios
ScriptAlias /nagios/cgi-bin /usr/local/www/nagios/cgi-bin

  Options ExecCGI
  AllowOverride None
  Order allow,deny
  Allow from all
  AuthName "Nagios Access"
  AuthType Basic
  AuthUserFile /usr/local/etc/nagios/htpasswd.users
  Require valid-user


Alias /nagios /usr/local/www/nagios

  Options None
  AllowOverride None
  Order allow,deny
  Allow from all
  AuthName "Nagios Access"
  AuthType Basic
  AuthUserFile /usr/local/etc/nagios/htpasswd.users
  Require valid-user


4. edit configure file
1) contacts.cfg
change notification email address:
email                          [e-mail]

2) services.cfg
monitor remote host via nrpe
######################################################################################
# Define services for other hosts via nrpe

define service{
        use                             generic-service
        host_name                       testhost
        service_description             check load
        check_command                   check_nrpe!check_load
        }
*** Must install nrpe in both nagios server and clients. **********

* other config files: hosts.cfg; commands.cfg;

5. install nrpe

# ./configure 

General Options:
 -------------------------
 NRPE port:    5666
 NRPE user:    nagios
 NRPE group:   nagios
 Nagios user:  nagios
 Nagios group: nagios

# make all

# make install-plugin

# make install-daemon

# make install-daemon-config

# make install-xinetd

6. edit nrpe.conf

allow hosts
define command
eg. command[check_2.abc.com]=/usr/lib64/nagios/plugins/check_http -H abc.com -w 5 -c 10

7. startup nrpe
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d