1.安装包准备(MySQL官网下载)

(1)查看MySQL是否安装，如果存在就先卸载

[root@hadoop101 桌面]# rpm -qa|grepMySQL

mysql-libs-5.1.73-7.el6.x86_64

[root@hadoop101 桌面]# rpm-e --nodeps mysql-libs-5.1.73-7.el6.x86_64

(2)查看mariadb是否安装，如果存在就先卸载

[root@hadoop1 mysql-libs]# rpm -qa|grepmariadb

mariadb-libs-5.5.60-1.el7_5.x86_64

[root@hadoop1 mysql-libs]# rpm -e --nodeps mariadb-libs-5.5.60-1.el7_5.x86_64

(3)上传mysql-libs.zip到hadoop102的/opt/software目录，并解压文件到当前目录

[root@hadoop1 mysql-libs]# cd /opt/software

[root@hadoop1 software]# ll

total75988

-rw-r--r--. 1 root root 77807942 Aug 13 12:17 mysql-libs.zip[root@hadoop1 software]#unzip mysql-libs.zipArchive: mysql-libs.zipcreating: mysql-libs/inflating: mysql-libs/MySQL-client-5.6.24-1.el6.x86_64.rpm

inflating: mysql-libs/mysql-connector-java-5.1.27.tar.gz

inflating: mysql-libs/MySQL-server-5.6.24-1.el6.x86_64.rpm

[root@hadoop1 software]# ll

total75992drwxr-xr-x. 2 root root 4096 Jun 26 2015 mysql-libs-rw-r--r--. 1 root root 77807942 Aug 13 12:17 mysql-libs.zip

(4)进入到mysql-libs文件夹下

[root@hadoop1 software]# cd mysql-libs/[root@hadoop1 mysql-libs]# ll

total76048

-rw-r--r--. 1 root root 18509960 Mar 26 2015 MySQL-client-5.6.24-1.el6.x86_64.rpm-rw-r--r--. 1 root root 3575135 Dec 1 2013 mysql-connector-java-5.1.27.tar.gz-rw-r--r--. 1 root root 55782196 Mar 26 2015 MySQL-server-5.6.24-1.el6.x86_64.rpm

2.安装MySQL服务器

(1)安装MySQL服务端

[root@hadoop101 mysql-libs]# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm

(2)查看产生的随机密码

[root@hadoop101 mysql-libs]# cat /root/.mysql_secret

OEXaQuS8IWkG19Xs

(3)查看MySQL状态

[root@hadoop101 mysql-libs]# service mysql status

(4)启动MySQL

[root@hadoop101 mysql-libs]# service mysql start

3.安装MySQL客户端

(1)安装MySQL客户端

[root@hadoop101 mysql-libs]# rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm

(2)链接MySQL(密码替换成产生的随机密码)

[root@hadoop101 mysql-libs]# mysql -uroot -pOEXaQuS8IWkG19Xs

(3)修改密码('000000'替换成你设置的密码)

mysql>SET PASSWORD=PASSWORD('000000');

(4)退出MySQL

mysql>exit

4.MySQL中user表中主机配置

配置只要是root用户+密码，在任何主机上都能登录MySQL数据库。

(1)进入MySQL

[root@hadoop101 mysql-libs]# mysql -uroot -p000000

(2)显示数据库

mysql>show databases;

(3)使用MySQL数据库

mysql>use mysql;

(4)展示MySQL数据库中的所有表

mysql>show tables;

(5)展示user表的结构

mysql>desc user;

(6)查询user表

mysql>select User, Host, Password from user;

(7)修改user表，把Host表内容修改为%

mysql>update user set host='%' where host='localhost';

(8)删除root用户的其他host

mysql>delete from user where Host='hadoop101';

delete from user where Host='127.0.0.1';

delete from user where Host='::1';

(9)刷新

mysql>flush privileges;

(10)退出

mysql>quit;

linux下，MySQL默认的数据文档存储目录为/var/lib/mysql