nagios设置邮件告警
搭建nagios的目的就是为了他的报警系统，nagios据我所了解可以有三种报警：一、声音报警
二、电子邮件报警
三、手机短讯报警
四、传真告警
下面是我的邮件报警的配置过程：
1、开启系统自带的sendmail邮件系统
service sendmail start
如果没有安装，可以yum一下
yum install -y sendmail*
service sendmail restart
测试发送邮件：
echo "test" | mail 88fly@163.com
注：iptables和selinux设置
2、配置nagios中报警邮箱
vi /usr/local/nagios/etc/objects/contacts.cfg
define contact{
contact_name mail ; Short name of user
alias null ; Full name of user
service_notification_period 24x7 （和如下时间模版（timeperiod）保持一致）
host_notification_period 24x7
service_notification_options w,u,c,r
host_notification_options d,u,r
service_notification_commands notify-service-by-email
host_notification_commands notify-host-by-email
email 88fly@163.com
}
在email那里加上自己的邮箱，如果有多个可以用逗号隔开
3、设置报警方式：
define timeperiod{
timeperiod_name 24x7
alias 24 Hours A Day, 7 Days A Week
sunday 00:00-24:00
monday 00:00-24:00
tuesday 00:00-24:00
wednesday 00:00-24:00
thursday 00:00-24:00
friday 00:00-24:00
saturday 00:00-24:00
}
这两个notify-service-by-email 和notify-host-by-email 是在command.cfg那里定义的，看看是怎么定义的：# 'notify-service-by-email' command definition
define command{
command_name notify-service-by-email
command_line echo " ** $NOTIFICATIONTYPE$ Service Alert: $HOSTNAME$/$HOSTADDRESS$ $SERVICEDESC$ is $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$ Additional Info:$SERVICEOUTPUT$ "| formail -I "Subject: $HOSTADDRESS$*$SERVICEOUTPUT$*$LONGDATETIME$"| sendmail -oi $CONTACTEMAIL$
}
# '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 $HOSTSTATE$ **" $CONTACTEMAIL$
}
这里已经默认配置好，我们不用修改直接调用就是了
最后重启服务：
service nagios retart
进行破环性测试！
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