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.cfg
define 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。