用crontab定时分隔nginx日志文件

1.创建/data/cut_nginx_logs.sh

#!/bin/bash
#function:cut nginx log files
#author: http://lnmp.org

#set the path to nginx log files
log_files_path="/data/wwwlogs/"
log_files_dir=${log_files_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")
#set nginx log files you want to cut
log_files_name=(a.domain.com b.domain.com)
#set the path to nginx.
nginx_sbin="/usr/sbin/nginx"
#Set how long you want to save
save_days=30

############################################
#Please do not modify the following script #
############################################
mkdir -p $log_files_dir

log_files_num=${#log_files_name[@]}

#cut nginx log files
for((i=0;i<$log_files_num;i++));do
        mv ${log_files_path}${log_files_name[i]}.log ${log_files_dir}/${log_files_name[i]}_$(date -d "yesterday" +"%Y%m%d").log
done

#delete 30 days ago nginx log files
find $log_files_path -mtime +$save_days -exec rm -rf {} ;

$nginx_sbin -s reload

2. 增加执行权限 

chmod +x /data/cut_nginx_logs.sh

3.修改/etc/crontab文件,以最后面加上以下代码,表示每天0点0分执行脚本 /data/cut_nginx_logs.sh

0 0     * * *   root    /data/cut_nginx_logs.sh