Nagios服务器架设之二
二、Nagios服务器配置过程
Nagios的配置过程：主机，主机组，服务，服务组，联系人，联系人组，监控时间，监控命令等，配置文件及配置项之间相互关联，彼此引用。
（Nagios配置的核心思想）
最重要的4点：
第一：要定义监控哪些主机、主机组（hosts.cfg），服务，服务组(services.cfg)
第二：要定义这个监控项需要通过什么命令实现(commands.cfg)
第三：要定义监控的时间段(timeperiods.cfg)
最后：要定义主机或服务出现问题时要通知的联系人或联系人组(contacts.cfg)
1) 定义hosts.cfg文件（监控哪些主机、主机组（hosts.cfg））
[root@localhost ~]# cd /usr/local/nagios/etc/
[root@localhost etc]# vi hosts.cfg
define host{ ----定义主机
use linux-server ----主机用户名
host_name web ----主机名字
alias benet-web ----主机别名
address 192.168.6.199 ----主机IP地址
}
define host{
use linux-server
host_name mysql
alias benet-mysql
address 192.168.6.200
}
define hostgroup{ ---定义主机组名字
hostgroup_name sa-servers ---主机组名字
alias sa servers ---主机组别名
members web,mysql ---有web和mysql两个成员
}
2）定义services.cfg(监控哪些服务，服务组(services.cfg))
[root@localhost etc]# vi services.cfg
################- benet web -##########################
define service{
use local-service ---主机用户名
host_name web
service_description PING ---服务描述
check_command check_ping!100.0,20%!500.0,60% ---检测命令及检测返回值用!隔开
}
define service{
use local-service
host_name web
service_description SSH
check_command check_ssh
}
define service{
use local-service
host_name web
service_description SSHD
check_command check_tcp!22
}
define service{
use local-service
host_name web
service_description http
check_command check_http
}
#####################- MYSQL -##########################
define service{
use local-service
host_name mysql
service_description PING
check_command check_ping!100.0,20%!500.0,60%
}
define service{
use local-service
host_name mysql
service_description SSH
check_command check_ssh
}
define service{
use local-service
host_name mysql
service_description ftp
check_command check_ftp
}
define service{
use local-service
host_name mysql
service_description mysqlport
check_command check_tcp!3306
}
注意：hosts.cfg和services.cfg两个文件默认在/usr/local/nagios/etc并不存在，需要手动创建。
Check_ping!100.0,20%!500.0,60%
命令！告警延时，丢包率！严重告警延时，丢包率。
Check_ssh!22!10
命令！端口！连接超时时间
3）定义contacts.cfg(定义主机或服务出现问题时要通知的联系人或联系人组)
[root@localhost etc]# cd /usr/local/nagios/etc/objects/
[root@localhost objects]# vi contacts.cfg
35 email root@localhost ;
4)定义cgi.cfg
[root@localhost etc]# cd /usr/local/nagios/etc/
[root@localhost etc]# vi cgi.cfg
107 default_user_name=benet
119 authorized_for_system_information=nagiosadmin,benet
131 authorized_for_configuration_information=nagiosadmin,benet
144 authorized_for_system_commands=benet
157 authorized_for_all_services=nagiosadmin,benet
158 authorized_for_all_hosts=nagiosadmin,benet
171 authorized_for_all_service_commands=nagiosadmin,benet
172 authorized_for_all_host_commands=nagiosadmin,benet
5)定义nagios.cfg
[root@localhost etc]# vi nagios.cfg
19 log_file=/usr/local/nagios/var/nagios.log
30 cfg_file=/usr/local/nagios/etc/hosts.cfg
31 cfg_file=/usr/local/nagios/etc/services.cfg
32 cfg_file=/usr/local/nagios/etc/commands.cfg
33 cfg_file=/usr/local/nagios/etc/contacts.cfg
34 cfg_file=/usr/local/nagios/etc/timeperiods.cfg
35 cfg_file=/usr/local/nagios/etc/templates.cfg
[root@localhost etc]# cd objects/
[root@localhost objects]# cp commands.cfg contacts.cfg timeperiods.cfg templates.cfg localhost.cfg /usr/local/nagios/etc/
[root@localhost objects]# ls ../
cgi.cfg hosts.cfg nagios.cfg services.cfg
commands.cfg htpasswd objects templates.cfg
contacts.cfg localhost.cfg resource.cfg timeperiods.cfg
