nagios监控三部曲之——为什么nagios不能发送报警邮件(2)

最近我写了关于naigos监控的安装与配置的技术文档，公司运维按照我的文档部署naigos，发现不能发送报警邮件，经过我的检查，发现问题如下：

1、hosts里的配置

[root@nagios ~]# cat /etc/hosts  
# Do not remove the following line, or various programs  
# that require network functionality will fail.  
127.0.0.1   localhost.localdomain localhost  
::1     localhost6.localdomain6 localhost6  
172.16.4.3  nagios.com  nagios ##一定要有本机的ip对应  

3、去nagios的web里，选择报警的服务（如果httpd），

点击http旁边的这个摁钮，如果你看到notification状态为disabled       那么你可以选择右侧的，然后选择commit 。出现下面对话框

[root@nagios var]# tail -f nagios.log  
[1326419317] Auto-save of retention data completed successfully.  
[1326422917] Auto-save of retention data completed successfully.  
[1326424408] EXTERNAL COMMAND: ENABLE_SVC_NOTIFICATIONS;henan-cunchu;HTTP  
[1326424434] Caught SIGTERM, shutting down...  
[1326424434] Successfully shutdown... (PID=6823)  
[1326424434] Nagios 3.3.1 starting... (PID=25398)  
[1326424434] Local time is Fri Jan 13 11:13:54 CST 2012  
[1326424434] LOG VERSION: 2.0  
[1326424434] Finished daemonizing... (New PID=25399)  
[1326424464] SERVICE NOTIFICATION: nagiosadmin;henan-cunchu;HTTP;CRITICAL;notify-service-by-email;?.?杩..