Nagios（七）——Nagios邮件，短信告警

Nagios除了监控功能很强大之外，它的报警功能也很不错。从运维的角度来讲，报警一般就是邮件和短信报警这两种方式，这次实验实现的是Nagios的邮件报警功能。

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1、安装sendmail组件

这里要确保sendmail相关组件的完整安装，

[root@server ~]# yum install sendmail* mailx

安装完成后重启sendmail服务

[root@server ~]# service sendmail restart

Shutting down sendmail: [ OK ]

Starting sendmail: [ OK ]

Starting sm-client: [ OK ]

测试sendmail发信情况

[root@server ~]# /bin/mail -s "`date +%Y-%m-%d` Server SMS Test" 159158*****@163.com

hello

admin

EOT

2、邮件报警的配置

一般而言，如果在整个系统中只有一个管理员，那么只需要在contact.cfg文件中，添加一下管理员的邮箱即可。但如果监控的内容中服务器有单独的管理员，那就需要定义多个contact（联系人），然后再通过contactgroup（联系组）对各个contact进行分组。

(1) 修改contact.cfg

[root@server ~]# vim /usr/local/nagios/etc/objects/contacts.cfg

define contact{

contact_name nagios

use generic-contact

alias Nagios

email 159158*****@163.com，159158*****@139.com //改为自己的邮箱地址即可

}

define contactgroup{

contactgroup_name admins

alias Nagios Administrators

members nagios

}

(2) 设置报警方式

[root@server ~]# vim /usr/local/nagios/etc/objects/templates.cfg

define contact{

name generic-contact ; The name of this contact template

service_notification_period 24x7 ; service notifications can be sent anytime

host_notification_period 24x7 ; host notifications can be sent anytime

service_notification_options w,u,c,r,f,s ; send notifications for all service states, flapping events, and scheduled downtime events

host_notification_options d,u,r,f,s ; send notifications for all host states, flapping events, and scheduled downtime events

service_notification_commands notify-service-by-email ; send service notifications via email

host_notification_commands notify-host-by-email ; send host notifications via email

}

(3) 修改commands.cfg

[root@server ~]# vim /usr/local/nagios/etc/objects/commands.cfg

# 'notify-host-by-email' command definition

define command{

command_name notify-host-by-email

command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$

}

# 'notify-service-by-email' command definition

define command{

command_name notify-service-by-email

command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$

}

看到这里已经默认配置好，我们不用修改直接调用就行了。

(4) 通过-v参数检查配置无误之后，重启nagios

[root@server ~]# service nagios restart

Running configuration check...done.

Stopping nagios: .done.

Starting nagios: done.

(5) 邮箱设置

这里以139邮箱为例，设置收信

点击左上角“设置”可以看到这个版块

Nagios（七）——Nagios 邮件，短信告警