新建 /home/mysqlBackup.sh 文件

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

执行crontab -e命令 , 每30分钟执行一次

  1. */30 * * * * /home/mysqlBackup.sh
  2. # 每天凌晨3点执行一次 (00 03 * * * /home/mysqlBackup.sh)

MySQL恢复

  1. mysql -u username -p databse < backup.sql