mysql 忘记root密码破解root密码破解所有用户密码，shell脚本

#!/bin/bash

# mysql 破解重置root密码

read -p "

Hello, welcome to continuous integration eisc.cn mysql 同时破解远程和localhost数据库密码

请输入用户名：" setuser

read -p "请自定义密码：" setpasswd

mycnf="/etc/my.cnf"

NR=`cat -n $mycnf | grep "\[mysqld\]" | awk -F" " '{print $1}'` ; echo $NR

                  # 找到 [mysqld] 标签所在行

sed -i "/skip-grant-tables/d" $mycnf

                  # 删除这个root免密登录配置，重新添加

sed -i "$NR a skip-grant-tables" $mycnf ; systemctl restart mysqld mariadb

                  # 在mysqld 标签下面增加免密登录配置信息

                  # 重启数据库

echo "您输入的信息为：$setuser $setpasswd"

mysqlversion=$(mysql -uroot -peisc.cn -e "select version();" | awk -F"." 'NR==2{print $1}') ; echo "mysql版本：$mysqlversion";

if [ $mysqlversion -gt 7 ];then

      echo "当前数据库版本大于7"

      mysql -e "use mysql;select user,authentication_string from user; set global read_only=0;set global read_only=1; set global validate_password.policy=0 ; set global validate_password.length=6;flush privileges;alter user '$setuser'@'localhost' identified by '$setpasswd';alter user '$setuser'@'%' identified by '$setpasswd';"

   else

      mysql -e "use mysql;select user,authentication_string from user; set global read_only=0;set global read_only=1; use mysql;select user,authentication_string from user; set global read_only=0;set global read_only=1; UPDATE user SET password=password('$setpasswd') WHERE user='$setuser';"

      echo "低于7的版破解"

fi

                  # 登录数据库修改root密码为：eisc.cn

                  # 重点：set global read_only=0;set global read_only=1; flush privileges;set global validate_password.policy=0 ; set global validate_password.length=6;

                  # 关掉新主库的只读属性,读写属性，密码长度为6

sed -i "/skip-grant-tables/d" $mycnf; systemctl restart mysqld mariadb

                  # 删除之前的配置，重启数据

# wget eisc.cn/file/shell/mysql-passwd.sh ; sh mysql-passwd.sh