使用logrotate轮询日志很方便，配置也很简单。
配置nginx
1、建立/etc/logrotate.d/nginx文件
vi /etc/logrotate.d/nginx
2、写入如下内容：
/var/log/nginx/*log {
daily
rotate 10
missingok
notifempty
compress
sharedscripts
postrotate
[ ! -f /var/run/nginx.pid ] || kill -USR1 `cat /var/run/nginx.pid`
endscript
}
注释：
/var/log/nginx/*log：需要轮询日志路径
daily：每天轮询
rotate 10：保留最多10次滚动的日志
missingok:如果日志丢失，不报错继续滚动下一个日志
notifempty:当日志为空时不进行滚动
compress：旧日志默认用gzip压缩
/var/run/nginx.pid：nginx主进程pid
配置radiusd
/var/local/var/log/radius/*log {
daily
missingok
rotate 120
compress
delaycompress
notifempty
create 666 radiusd radiusd
prerotate
/usr/bin/pkill -9 radiusd
endscript
sharedscripts
postrotate
/usr/local/sbin/radiusd -Xx > /usr/local/var/log/radius/radius.log&
endscript
}
配置apache
/var/log/httpd/*log {
missingok
notifempty
sharedscripts
postrotate
/sbin/service httpd reload > /dev/null 2>/dev/null || true
endscript
}
