七、郵件告警設置
nagios發警告郵件是採用本機的smtp服務,可以查看commands.cfg中關於發郵件的命令的定義,使用本機的mail命令,這就需要開啓本機的smtp服務,爲了安全可以在防火牆上設置拒絕其他的機器連本機的25號端口。
1、查看command.cfg命令參數中郵件調用的情況:
[root@localhost ]# vim /usr/local/nagios/etc/objects/command.cfg
# 'notify-host-by-email' command definition (主機郵件告警設置)
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 (服務郵件告警設置)
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、設置接收告警郵件的地址:
[root@localhost ]# vim /usr/local/nagios/etc/objects/contacts.cfg
define contact{
contact_name nagiosadmin
use generic-contact
alias Nagios Admin
}
3、打開並啓動主控服務器的郵件發送服務:
[root@localhost ]# service sendmail start
[root@localhost ]# chkconfig sendmail on
注意郵件發送服務SMTP協議需要打開本地的“25”端口,如果防火牆有阻擋的話,要開啓起來。