LorDong's Blog

我的这个WordPress建的数据库名叫mydb，而mysql默认建有一个管理用的数据库名叫mysql，昨晚我本来想删除博客的数据库再恢复的（整体替换些内容），结果不小心删除掉了mysql的数据库，都是以my开头的，所以很容易就搞错了，其结果就是所有数据库都连接失败。

但是昨天VPS的网络异常经常连接不上，刚才找了一下之前安装php+mysql+nginx的lnmp0.9脚本，摘取了一部分内容进行测试，已成功恢复数据库。

重新建库的脚本是：
[bash]
#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH

#set mysql root password

echo “===========================”

mysqlrootpwd=”root”
echo “Please input the root password of mysql:”
read -p “(Default password: root):” mysqlrootpwd
if [ “$mysqlrootpwd” = “” ]; then
mysqlrootpwd=”root”
fi
echo “===========================”
echo mysqlrootpwd=”$mysqlrootpwd”
echo “===========================”

/etc/init.d/mysql start
/usr/local/mysql/bin/mysql_install_db –user=mysql
/usr/local/mysql/bin/mysqladmin -u root password $mysqlrootpwd

cat > /tmp/mysql_sec_script<<EOF
use mysql;
update user set password=password(‘$mysqlrootpwd’) where user=’root’;
delete from user where not (user=’root’) ;
delete from user where user=’root’ and password=”;
drop database test;
DROP USER ”@’%’;
flush privileges;
EOF

/usr/local/mysql/bin/mysql -u root -p$mysqlrootpwd -h localhost < /tmp/mysql_sec_script

rm -f /tmp/mysql_sec_script

/etc/init.d/mysql restart
[/bash]

只有在mysql数据库里所有数据表被删除时调用才不会出错。

恢复好数据库后再登录phpmyadmin控制台，逐一给各个数据库建各自的用户（如果不是用root用户访问数据库的情况）。

Tags: mysql, VPS

This entry was posted on 星期日, 22 7 月, 2012 at 16:53 and is filed under 东东博客. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.