任務計劃
crontab -l
1 15 * * * /home/dongnan/sh/split.sh >> /home/dongnan/sh/cron.log 2>&

nginx 日志
ls /var/log/nginx/
20130730-access.log.gz  20130801-access.log.gz  20130803-access.log.gz
20130730-error.log.gz   20130801-error.log.gz   20130803-error.log.gz
20130731-access.log.gz  20130802-access.log.gz access.log
20130731-error.log.gz   20130802-error.log.gz   error.log

shell 腳本
cat split.sh

代碼如下:
#!/bin/bash
#script_name:nginx_log.sh
#description:nginx-log deleted/rotate/compress
#last_update:20130725 by zongming

#Nginx
#Signal Action
#TERM, INT Terminate the server immediately
#QUIT Stop the server
#HUP Configuration changes, start new workers, graceful stop of old workers
#USR1 Reopen log files
#USR2 Upgrade the server executable
#WINCH Graceful Stop (parent process advise the children to exit)

  
#variables
log_dir=/var/log/nginx/
log_date=$(date +"%Y%m%d")
nginx_pid=/var/run/nginx.pid
keep_days=30

#old_log
find "$log_dir" -name "*/.log.gz" -type f -mtime +"${keep_days}" -exec rm -rf {} /;

#rename_log
for log_name in `ls "$log_dir" | awk '/.log$/'`;do
    if [ -e "${log_dir}${log_date}-${log_name}" ];then
        echo "${log_dir}${log_date}-${log_name} Already exists" && continue
    else
        /bin/mv "${log_dir}${log_name}" "${log_dir}${log_date}-${log_name}"
        /bin/gzip "${log_dir}${log_date}-${log_name}"
    fi
done

#new_log
/bin/kill -USR1 $(cat $nginx_pid) && /bin/sleep 1

nginx日志切割腳本：

vi /root/cutlog.sh

代碼如下:
#!/bin/bash
I=`ps aux | grep nginx | grep root | grep -v 'grep nginx' | awk '{print $14}'`    #查找nginx進程
if [ $I == /usr/local/nginx/sbin/nginx ];then
ACCLOG=`cat /usr/local/nginx/conf/nginx.conf | grep  ' access_log' | awk '{print $2}'`  #如果nginx進程在，就找到配置文件，讀取accesslog路徑
ERRLOG=`cat /usr/local/nginx/conf/nginx.conf| grep  ^error  | awk '{print $2}'| cut  -d";" -f1`  #錯誤日志的路徑
ls $ACCLOG     #查看是否有此文件
if [ $? -eq 0 ];then    #如果有
mv $ACCLOG  $ACCLOG.`date -d "-1 day" +%F`  #重命名當前日志
mv $ERRLOG $ERRLOG.`date -d "-1 day" +%F`
touch $ACCLOG    #創建空日志
touch $ERRLOG
chown nginx:root  $ACCLOG   #修改屬主
chown nginx:root  $ERRLOG
[ -f /usr/local/nginx/logs/nginx.pid ] && kill -USR1 `cat /usr/local/nginx/logs/nginx.pid`     #判斷進程，并重新加載（這里的kill -USR1會使nginx將新產生的日志寫到剛創建的新日志里面。）
/mnt/logs/checklog.sh $ACCLOG.`date "-1 day" +%F` #這個是日志分析腳本