log日志，crontab

定期备份mysql的log日志文件，保留一个月

将文件压缩为gzip格式，节省空间，备份到/home/shell/myqsl_back/目录下，保留一个月
mysql_backup备份的脚本

#!/bin/bash
/usr/local/mysql/bin/mysqldump
-uroot -pmingqua1 --all-databases --routines --events --triggers | gzip
> /home/shell/mysql_bakup/mysql_bakup_`date '+%Y-%m-%d'`.sql.gz

find /home/shell/mysql_bakup -mtime +30 -name "*.gz" -exec rm -rf {} \;

定期处理nginx的log文件

#!/bin/bash
#function:cut nginx log files
#

#set the path to nginx log files
log_files_path="/home/wwwlogs/"
#log_files_dir=${log_files_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")
log_files_dir=$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")
#set nginx log files you want to cut
log_files_name=( ggg8.com_access,xxx.com_access,别的省略)   
#这是从/usr/local/nginx/conf/vhost/ggg8.com.conf  xxx.com.conf
#set the path to nginx.
nginx_sbin="/usr/local/nginx/sbin/nginx"
#Set how long you want to save
save_days=30

cd $log_files_path
############################################
#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
tar -zcvf ${log_files_dir}/${log_files_name[i]}_$(date -d "yesterday" +"%Y%m%d").tar.gz ${log_files_name[i]}.log
#delete source
rm -rf ${log_files_name[i]}.log
done

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

$nginx_sbin -s reload

还有一个nginx定期处理脚本文件：
#!/bin/bash
#desc:把当前日志按日期备份，重新生成第二天的日志文件

DATE=`date +%Y%m%d`
NGINX_PID=`cat /var/run/nginx.pid`
#如果当前Nginx没有运行就退出
if [ "$?" != 0 ]
then
        exit 1;
fi

#nginx 日志所在的路径
LOG_PATH='/usr/local/nginx/logs/'
LOG_NAME='access.log'
mv ${LOG_PATH}${LOG_NAME} ${LOG_PATH}${LOG_NAME}$DATE

#删除7天前旧的备份文件
function deloldbak()
{
        olddate=`date +"%Y%m%d" -d "-$1 day"`
        if [ -e "${LOG_PATH}${LOG_NAME}$olddate" ]
        then
                rm -f ${LOG_PATH}${LOG_NAME}$olddate
                echo "${LOG_PATH}${LOG_NAME}$olddate del OK"
        fi
}

#重载nginx配置，重新生成nginx日志文件
kill -USR1 $NGINX_PID

if [ "$?" == 0 ]
then
        deloldbak 7
        exit 0;
fi

data -d +"%Y-%m-%d"
date -d "yesterday" +"%Y"
date -d "yesterday" +"%m"

[root@test2 ~]# date +"%Y-%m-%d"
2018-03-28
[root@test2 ~]# date -d "yesterday" +"%m"
03
[root@test2 ~]# date -d "yesterday" +"%d"
27
[root@test2 ~]# date -d "1 day ago" +"%Y-%m-%d"
2018-03-27
[root@z ~]# date -d "yesterday" +"%Y"
2018

crontab -e

mkdir -p /home/shell/

* 0 * * * sh /home/shell/cut_nginx_logs.sh  >> /dev/null 2>&1        
0 3 * * * sh /home/shell/mysql_bakup.sh >> /dev/null 2>&1