Backup & Restore Backup Script#1: #!/bin/bash # 以下配置資訊請自己修改 mysql_user="USER" #MySQL 備份使用者 mysql_password="PASSWORD" #MySQL 備份使用者的密碼 mysql_host="localhost" mysql_port="3306" mysql_charset="utf8" #MySQL 編碼 backup_db_arr=("db1" "db2") #要備份的資料庫名稱,多個用空格分開隔開 如("db1" "db2" "db3") backup_location=/var/www/mysql #備份資料存放位置,末尾請不要帶"/",此項可以保持預設,程式會自動建立資料夾 expire_backup_delete="ON" #是否開啟過期備份刪除 ON 為開啟 OFF 為關閉 expire_days=3 #過期時間天數 預設為三天,此項只有在 expire_backup_delete 開啟時有效 # 本行開始以下不需要修改 backup_time=`date +%Y%m%d%H%M` #定義備份詳細時間 backup_Ymd=`date +%Y-%m-%d` #定義備份目錄中的年月日時間 backup_3ago=`date -d '3 days ago' +%Y-%m-%d` #3 天之前的日期 backup_dir=$backup_location/$backup_Ymd #備份資料夾全路徑 welcome_msg="Welcome to use MySQL backup tools!" #歡迎語 # 判斷 MYSQL 是否啟動,mysql 沒有啟動則備份退出 mysql_ps=`ps -ef |grep mysql |wc -l` mysql_listen=`netstat -an |grep LISTEN |grep $mysql_port|wc -l` if [ [$mysql_ps == 0] -o [$mysql_listen == 0] ]; then echo "ERROR:MySQL is not running! backup stop!" exit else echo $welcome_msg fi # 連線到 mysql 資料庫,無法連線則備份退出 mysql -h$mysql_host -P$mysql_port -u$mysql_user -p$mysql_password < $backup_dir/$dbname-$backup_time.sql.gz` flag=`echo $?` if [ $flag == "0" ];then echo "database $dbname success backup to $backup_dir/$dbname-$backup_time.sql.gz" else echo "database $dbname backup fail!" fi done else echo "ERROR:No database to backup! backup stop" exit fi # 如果開啟了刪除過期備份,則進行刪除操作 if [ "$expire_backup_delete" == "ON" -a "$backup_location" != "" ];then #`find $backup_location/ -type d -o -type f -ctime +$expire_days -exec rm -rf {} \;` `find $backup_location/ -type d -mtime +$expire_days | xargs rm -rf` echo "Expired backup data delete complete!" fi echo "All database backup success! Thank you!" exit fi Restore How to Restore Large MySQL Database When we restore a large database, usually we come across two errors as shown below:  “MySQL server has gone away” & “Lost connection to MySQL server during query” Here, we consider restoring a 16GB database: When restoring huge database, we need to set the values as specified below: connect_timeout = 3600 max_allowed_packet = 1024M net_buffer_length = 1000000 wait_timeout = 86400 (which means 24 hours) interactive_timeout = 86400 (which means 24 hours) net_write_timeout = 3600 net_read_timeout = 3600 mysql -u root -p -max_allowed_packet=1024M \ -connect_timeout=3600 \ -net_buffer_length=1000000 \ -wait_timeout=86400 \ -interactive_timeout=86400 \ -net_write_timeout=3600 \ -net_read_timeout=3600 \ database-name < database.sql