nagios监控服务出现FLAPPING状态时无法发出邮件报警信息

1.服务出现FLAPPING状态时无法发出邮件报警信息
[1409537279] SERVICE ALERT: rs-07;Memory;CRITICAL;HARD;2;Connection refused by host
[1409537279] SERVICE FLAPPING ALERT: rs-07;Memory;STARTED; Service appears to have started flapping (28.2% change >= 20.0% threshold)

2.原因：flap_detection_enabled参数起作用，当服务在两种状态之间频繁切换时，为避免不停的发送报警，此参数用于抑制报警

define service{
        name                            generic-service         
        active_checks_enabled           1                       
        passive_checks_enabled          1                       
        parallelize_check               1                       
        obsess_over_service             1                       
        check_freshness                 0                       
        notifications_enabled           1                       
        event_handler_enabled           1                       
        flap_detection_enabled          0        <--当服务在多个状态直接频繁切换时，抑制触发监控报警。使之不生效             
        failure_prediction_enabled      1                       
        process_perf_data               1                       
        retain_status_information       1                       
        retain_nonstatus_information    1                       
        is_volatile                     0                       
        check_period                    24x7                    
        max_check_attempts              3                       
        normal_check_interval           10                      
        retry_check_interval            2                       
        contact_groups                  admins                  
        notification_options            w,u,c,r                 
        notification_interval           60                      
        notification_period             24x7                    
         register                        0                      
        }