七、邮件告警设置nagios发警告邮件是采用本机的smtp服务,可以查看commands.cfg中关于发邮件的命令的定义,使用本机的mail命令,这就需要开启本机的smtp服务,为了安全可以在防火墙上设置拒绝其他的机器连本机的25号端口。1、查看command.cfg命令参数中邮件调用的情况：[root@localhost ]# vim /usr/local/nagios/etc/objects/command.cfg# 'notify-host-by-email' command definition （主机邮件告警设置） 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 （服务邮件告警设置） 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$SERVICEOUTPUT$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$ }2、设置接收告警邮件的地址：[root@localhost ]# vim /usr/local/nagios/etc/objects/contacts.cfgdefine contact{ contact_name nagiosadmin use generic-contact alias Nagios Admin email test@139.com (这里设置接收告警的邮件地址) }3、打开并启动主控服务器的邮件发送服务：[root@localhost ]# service sendmail start[root@localhost ]# chkconfig sendmail on注意邮件发送服务SMTP协议需要打开本地的“25”端口，如果防火墙有阻挡的话，要开启起来。