定时备份mysql 数据库数据

#!/bin/bash

# 定义工作路径
BASE_DIR=/home/123/mysql
backup_time=`date +%Y%m%d%H%M`
# 备份文件存放地址(根据实际情况填写)
backup_location=$BASE_DIR/backup/$backup_time
echo "$(date "+%Y-%m-%d %H:%M:%S") 备份路径：$backup_location"

# 判断路径是否存在
if [ ! -d "$backup_location" ]; then
    mkdir -p $backup_location
fi

# 设置mysql的登录用户名和密码(根据实际情况填写)
mysql_user="root"
mysql_password="123456"
mysql_host="127.0.0.1"
mysql_port="3306"
mysql_charset="utf8"
backup_database=(test) #指定需要备份的数据库，中间以空格进行分隔


# 是否删除过期数据
expire_backup_delete="ON"
expire_days=3

backup_dir=$backup_location

time=$(date "+%Y-%m-%d %H:%M:%S")

for db in ${backup_database[@]}; do
 storage_file=$backup_dir/${db}_backup.sql
 touch $storage_file
 docker exec -it mysql mysqldump -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password -B $db > $storage_file
done

if [ "$expire_backup_delete" == "ON" -a  "$backup_location" != "" ];then
        del_dir=$BASE_DIR/backup
        del_file=`date -d "-${expire_days} day" +%Y%m%d`
        del=${del_dir}/${del_file}*
        echo 'delete file is':${del}
        rm -rf ${del}
fi