Mysql rpm包安装

1.下载 MySQL-client-5.6.25-1.linux_glibc2.5.x86_64.rpm  MySQL-devel-5.6.25-1.linux_glibc2.5.x86_64.rpm  MySQL-server-5.6.25-1.linux_glibc2.5.x86_64.rpm这三个软件包，注意版本要一致：

2.安装三个RPM包，遇到冲突和依赖可以先删除相应的软件。

rpm -ivh MySQL-server-5.6.25-1.linux_glibc2.5.x86_64.rpm

rpm -ivh MySQL-client-5.6.25-1.linux_glibc2.5.x86_64.rpm

rpm -ivh MySQL-devel-5.6.25-1.linux_glibc2.5.x86_64.rpm

3.启动mysql

/etc/init.d/mysql start

/etc/rc.d/init.d/mysql #启动文件

/usr/share/my #包含my-default.cnf文件

/usr/my.cnf #主配置文件

/usr/lib64/mysql#mysql#库文件夹

/var/lib/mysql#数据库文件存放目录

4.登入mysql报错

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

5.先停用数据库服务

service mysqld stop

查看进程端口是否停用

ss -tnlp|grep mysql

进入MYSQL安全模式，通常会卡住，其实是在后台运行，所以一分钟后按Ctrl+C

/usr/bin/mysqld_safe --skip-grant-table &

然后以无密码登录

mysql -u root

6.修改密码

使用mysql数据库

use mysql

重设root密码

update user set password=PASSWORD("huaxia") where user='root';

刷新库

flush privileges；

退出

quit；

7.重新登入数据库

[root@sever9 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.6.25-log MySQL Community Server (GPL)

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

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