1.备份脚本

  1. #!/bin/bash
  2. source /etc/profile
  4. # 以下配置信息请自己修改
  5. mysql_user="user"             # MySQL备份用户
  6. mysql_password="password@"    # MySQL备份用户的密码
  7. mysql_port="3306"             # MySQL端口
  8. mysql_charset="utf8"          # MySQL编码
  9. backup_db_arr=("bakbase")     # 要备份的数据库名称，多个用空格分开隔开 如("db1" "db2" "db3")
  10. backup_location=/data/backup  # 备份数据存放位置，末尾请不要带"/",此项可以保持默认，程序会自动创建文件夹
  11. expire_backup_delete="ON"     # 是否开启过期备份删除 ON为开启 OFF为关闭
  12. expire_days=7                 # 过期时间天数 默认为三天，此项只有在expire_backup_delete开启时有效
  15. # 本行开始以下不需要修改
  16. backup_time=`date +%Y%m%d%H%M`                    #定义备份详细时间
  17. backup_Ymd=`date +%Y-%m-%d`                       #定义备份目录中的年月日时间
  18. backup_3ago=`date -d '3 days ago' +%Y-%m-%d`      #3天之前的日期
  19. backup_dir=$backup_location/$backup_Ymd           #备份文件夹全路径
  20. welcome_msg="Welcome to use MySQL backup tools!"  #欢迎语
  22. # 判断MYSQL是否启动,mysql没有启动则备份退出
  23. mysql_ps=`ps -ef |grep mysql |wc -l`
  24. mysql_listen=`netstat -an |grep LISTEN |grep $mysql_port|wc -l`
  25. if [ [$mysql_ps == 0] -o [$mysql_listen == 0] ]; then
  26.         echo "ERROR:MySQL is not running! backup stop!"
  27.         exit
  28. else
  29.         echo $welcome_msg
  30. fi
  32. # 连接到mysql数据库，无法连接则备份退出
  33. mysql -P$mysql_port -u$mysql_user -p$mysql_password <<end
  34. use mysql;
  35. select host,user from user where user='root' and host='localhost';
  36. exit
  37. end
  39. flag=`echo $?`
  40. if [ $flag != "0" ]; then
  41.         echo "ERROR:Can't connect mysql server! backup stop!"
  42.         exit
  43. else
  44.         echo "MySQL connect ok! Please wait......"
  45.         # 判断有没有定义备份的数据库，如果定义则开始备份，否则退出备份
  46.         if [ "$backup_db_arr" != "" ];then
  47.                 #dbnames=$(cut -d ',' -f1-5 $backup_database)
  48.                 #echo "arr is (${backup_db_arr[@]})"
  49.                 for dbname in ${backup_db_arr[@]}
  50.                 do
  51.                         echo "database [ $dbname ] backup start..."
  52.                         `mkdir -p $backup_dir`
  53.                         `mysqldump -P$mysql_port -u$mysql_user -p$mysql_password $dbname --default-character-set=$mysql_charset | gzip > $backup_dir/$dbname-$backup_time.sql.gz`
  54.                         flag=`echo $?`
  55.                         if [ $flag == "0" ];then
  56.                                 echo "database $dbname success backup to $backup_dir/$dbname-$backup_time.sql.gz"
  57.                         else
  58.                                 echo "database $dbname backup fail!"
  59.                         fi
  61.                 done
  62.         else
  63.                 echo "ERROR:No database to backup! backup stop"
  64.                 exit
  65.         fi
  66.         # 如果开启了删除过期备份，则进行删除操作
  67.         if [ "$expire_backup_delete" == "ON" -a "$backup_location" != "" ];then
  68.                  #`find $backup_location/ -type d -o -type f -ctime +$expire_days -exec rm -rf {} \;`
  69.                  `find $backup_location/ -type d -mtime +$expire_days | xargs rm -rf`
  70.                  echo "Expired backup data delete complete!"
  71.         fi
  72.         echo "All database backup success! Thank you!"
  73.         exit
  74. fi

2.上传脚本

上传脚本到/data/backup目录下(如果没有创建之)

3.给脚本赋予执行权限

先确保环境变量正常配置：

  1. #MYSQL_HOME
  2. export MYSQL_HOME=/data/mysql
  3. export PATH=$PATH:$MYSQL_HOME/bin
  5. chmod +x mysql_backup.sh

4.定时执行脚本

  1. crontab -e
  2. # 输入以下内容，设置每天凌晨3:00定时自动备份
  3. 00 03 * * * /data/backup/mysql_backup.sh

5.MySQL恢复

  1. # 解压备份文件
  2. gunzip db-xxxxx.sql.gz
  3. mysql -u 用户名 –p密码 数据库名 < db-xxxxx.sql