/home/www/nginx/logs/*log                     {
    daily                                                                               每天执行一次日志轮询                
    rotate                                                           
 missingok                                                                                                                                             notifempty
    compress
    dateext                                                             日志rotate后再后面加日期
    sharedscripts                                                    有多个日志需要轮询时，只执行一次脚本
    postrotate
        [ ! -f /home/www/nginx/logs/nginx.pid ] || kill -USR1 `cat /home/www/nginx/logs/nginx.pid`       
    endscript
}