数据无价，及时备份
刚才有个玩家在站上玩游戏，提醒了我要及时备份数据啊，万一哪天服务器挂了把他们的数据丢了，我可就是罪人了！
一直打算放个自动备份的shell，都没有放。正好现在不忙，随手加了进去。
安全起见，直接用Root执行的：
/root/mysql_backup.sh
# everyday 3:00 AM execute database backup
3 0 * * * /root/mysql_backup.sh
以下是自动自动备份shell，只保留最新5天
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#!/bin/sh
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# mysql_backup.sh: backup mysql databases and keep newest 5 days backup.
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#
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# db_user is mysql username
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# db_passwd is mysql password
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# db_host is mysql host
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# —————————–
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db_user="root"
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db_passwd="zhoz.com"
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db_host="localhost"
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# the directory for story your backup file.
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backup_dir="/home/zhozdbbackup"
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# date format for backup file (dd-mm-yyyy)
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time="$(date +"%d-%m-%Y")"
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# mysql, mysqldump and some other bin's path
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MYSQL="/usr/bin/mysql"
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MYSQLDUMP="/usr/bin/mysqldump"
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MKDIR="/bin/mkdir"
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RM="/bin/rm"
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MV="/bin/mv"
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GZIP="/bin/gzip"
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# check the directory for store backup is writeable
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test ! -w $backup_dir && echo "Error: $backup_dir is un-writeable." && exit 0
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# the directory for story the newest backup
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test ! -d "$backup_dir/backup.0/" && $MKDIR "$backup_dir/backup.0/"
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# get all databases
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all_db="$($MYSQL -u $db_user -h $db_host -p$db_passwd -Bse 'show databases')"
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for db in $all_db
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do
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$MYSQLDUMP -u $db_user -h $db_host -p$db_passwd $db | $GZIP -9 > "$backup_dir/backup.0/$time.$db.gz"
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done
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# delete the oldest backup
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test -d "$backup_dir/backup.5/" && $RM -rf "$backup_dir/backup.5"
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# rotate backup directory
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for int in 4 3 2 1 0
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do
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if(test -d "$backup_dir"/backup."$int")
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then
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next_int=`expr $int + 1`
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$MV "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"
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fi
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done
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exit 0;
用cron就解决了。哪这么复杂
sorry 看错。。。。用的就是cron….