Basic configuration of Nagios memo

######################################## Server ####################################### #

#Ls/usr/loca/Nagios

CGI. cfg --> CGI configuration file
Htpasswd. Users --> Apache authentication Password File
Nagios. cfg --> main configuration file of Nagios
Objects --> Monitoring object, definition file directory
Resource. cfg --> Nagios resource configuration file

#Grep '^ pai_file'/usr/local/Nagios/etc/Nagios. cfg
Export _file =/usr/local/Nagios/etc/objects/commands. cfg
// Monitoring script configuration file
Export _file =/usr/local/Nagios/etc/objects/contacts. cfg
// Contact/group configuration file
Export _file =/usr/local/Nagios/etc/objects/timeperiods. cfg
// Monitoring time period configuration file
Export _file =/usr/local/Nagios/etc/objects/templates. cfg
// Monitoring Service, alarm Configuration
Export _file =/usr/local/Nagios/etc/objects/localhost. cfg
// Local configuration file

#PWD
/Usr/local/Nagios/etc/objects
# Touch hosts. cfg services. cfg
# Chown Nagios: Nagios hosts. cfg services. cfg

#Vim/usr/local/Nagios/etc/Nagios. cfg// Add the following to the monitoring host and service configuration file
Export _file =/usr/local/Nagios/etc/objects/hosts. cfg

Export _file =/usr/local/Nagios/etc/objects/services. cfg

#CAT/usr/local/Nagios/etc/objects/hosts. cfg// Add monitoring host
Define host {
Host_name Client1
Address 192.168.1.18
Alias Client1
Use Linux-Server
}

Commands. cfg// Add nrpe

Define command {
Command_name check_nrpe
Command_line $ user1 $/check_nrpe-h $ hostaddress $-C $ arg1 $
}

Commands. cfg// If you need to add a custom command to speed up the MySQL service status
Bytes ---------------------------------------------------------------------------------------
Define command {
Command_name check_mysql
Command_line $ user1 $/check_mysql-h $ hostaddress $-P 3306-u Nagios-D Nagios-P 123
}
Bytes ---------------------------------------------------------------------------------------

######################################## Server ####################################### #

Client:

You need to grant permissions to the monitored host in MySQL:

Check_mysql --> Add MySQL detection for Nagios

Mysql>Create Database Nagios;
Query OK, 1 row affected (0.02 Sec)

Mysql>Grant select on Nagios. * To Nagios @ '%' identified by '123 ';
Query OK, 0 rows affected (0.02 Sec)

Mysql>Flush privileges;
Query OK, 0 rows affected (0.00 Sec)

Mysql>

##################################### ### server #################################### ####
services. CFG // some monitoring service examples
usage
define service {
use local-service
host_name Client1
service_description check_user
check_command check_nrpe! Check_users
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_load
check_command check_nrpe! Check_load
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_total_procs
check_command check_nrpe! Check_total_procs
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check _/
check_command check_nrpe! Check _/
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_swap
check_command check_nrpe! Check_swap
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_zombie_procs
check_command check_nrpe! Check_zombie_procs
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_http
check_command check_http
icationications_enabled 1
}

define service {
use local-service
host_name Client1
service_description check_ssh
check_command check_ssh
icationications_enabled 1
}

Define Service {
Use local-Service
Host_name Client1
Service_description check_mysql
Check_command check_mysql
Notifications_enabled 1
}
Bytes ---------------------------------------------------------------------------------------

######################################## Server ####################################### #

Client:

Not all commands are available in the preceding service examples. Some of them need to be configured on the nrpe of the client.

#Grep '^ command \ ['/usr/local/Nagios/etc/nrpe. cfg
Command [check_users] =/usr/local/Nagios/libexec/check_users-W 5-C 10
Command [check_load] =/usr/local/Nagios/libexec/check_load-W 15,10, 5-C 30,25, 20
Command [Check _/] =/usr/local/Nagios/libexec/check_disk-W 20%-C 10%-P/dev/sda1
Command [check_swap] =/usr/local/Nagios/libexec/check_disk-W 20%-C 10%-P/dev/sda3
Command [check_zombie_procs] =/usr/local/Nagios/libexec/check_procs-W 5-C 10-s Z
Command [check_total_procs] =/usr/local/Nagios/libexec/check_procs-W 150-C 200
// The partitions of different machines may be different, so here I modified a monitoring of the/and swap partitions, and the monitoring of system resources is implemented through nrpe, services such as SSH and MySQL do not need to rely on nrpe

The above is a configuration memo for the basic services and system resources monitored by Nagios, and a configuration for the Nagios timeperiods. cfg, contacts. cfg, and monitoring host group and Service Group will be available later.

Attach a Monitoring Chart