Linux Mysql 安装方法

1、检查是否有安装

[root@JDDB mysql]# yum list installed | grep mysql
mysql-community-client.x86_64 5.6.39-2.el7 @mysql56-community
mysql-community-common.x86_64 5.6.39-2.el7 @mysql56-community
mysql-community-libs.x86_64 5.6.39-2.el7 @mysql56-community
mysql-community-release.noarch el7-5 installed
mysql-community-server.x86_64 5.6.39-2.el7 @mysql56-community

2、卸载删除

[root@JDDB mysql]# yum -y remove mysql-community-*

下载 MySQL Yum Repository

https://repo.mysql.com/

地址为 http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

执行

wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

如果提示-bash: wget: 未找到命令，请先执行 yum install wget 安装 wget

安装

添加 MySQL Yum Repository

添加 MySQL Yum Repository 到你的系统 repository 列表中，执行

yum localinstall mysql-community-release-el7-5.noarch.rpm

显示

[root@bogon software]# yum localinstall mysql-community-release-el7-5.noarch.rpm
已加载插件：fastestmirror
正在检查 mysql-community-release-el7-5.noarch.rpm: mysql-community-release-el7-5.noarch
mysql-community-release-el7-5.noarch.rpm 将被安装
正在解决依赖关系
--> 正在检查事务 ---> 软件包 mysql-community-release.noarch.0.el7-5 将被 安装 --> 解决依赖关系完成 依赖关系解决 ================================================================================ Package 架构 版本 源 大小 ================================================================================ 正在安装: mysql-community-release noarch el7-5 /mysql-community-release-el7-5.noarch 4.3 k 事务概要 ================================================================================ 安装 1 软件包 总计：4.3 k 安装大小：4.3 k Is this ok [y/d/N]

提示是否 OK ，输入 y

Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  正在安装    : mysql-community-release-el7-5.noarch                        1/1
  验证中      : mysql-community-release-el7-5.noarch                        1/1

已安装:
  mysql-community-release.noarch 0:el7-5

完毕！

提示“完成！”，则说明源添加成功。

验证下是否添加成功

yum repolist enabled | grep "mysql.*-community.*"

可以看到下面内：

[root@bogon software]# yum repolist enabled | grep "mysql.*-community.*"
mysql-connectors-community/x86_64        MySQL Connectors Community           1
mysql-tools-community/x86_64             MySQL Tools Community                1
mysql56-community/x86_64                 MySQL 5.6 Community Server          13

选择要启用 MySQL 版本

查看 MySQL 版本，执行

yum repolist all | grep mysql

可以看到 5.5， 5.7 版本是默认禁用的，因为现在最新的稳定版是 5.6

[root@bogon software]# yum repolist all | grep mysql
mysql-connectors-community/x86_64 MySQL Connectors Community         启用:    14
mysql-connectors-community-source MySQL Connectors Community - Sourc 禁用
mysql-tools-community/x86_64      MySQL Tools Community              启用:    17
mysql-tools-community-source      MySQL Tools Community - Source     禁用
mysql55-community/x86_64          MySQL 5.5 Community Server         禁用
mysql55-community-source          MySQL 5.5 Community Server - Sourc 禁用
mysql56-community/x86_64          MySQL 5.6 Community Server         启用:   139
mysql56-community-source          MySQL 5.6 Community Server - Sourc 禁用
mysql57-community-dmr/x86_64      MySQL 5.7 Community Server Develop 禁用
mysql57-community-dmr-source      MySQL 5.7 Community Server Develop 禁用

通过 Yum 来安装 MySQL

执行

yum install mysql-server

Yum 会自动处理 MySQL 与其他组件的依赖关系：
---------------------------------------

如果报错，内容含有

Error: Package: mysql-community-libs-5.6.35-2.el7.x86_64 (mysql56-community)
           Requires: libc.so.6(GLIBC_2.17)(64bit)
Error: Package: mysql-community-server-5.6.35-2.el7.x86_64 (mysql56-community)
           Requires: libc.so.6(GLIBC_2.17)(64bit)
Error: Package: mysql-community-server-5.6.35-2.el7.x86_64 (mysql56-community)
           Requires: systemd
Error: Package: mysql-community-server-5.6.35-2.el7.x86_64 (mysql56-community)
           Requires: libstdc++.so.6(GLIBCXX_3.4.15)(64bit)
Error: Package: mysql-community-client-5.6.35-2.el7.x86_64 (mysql56-community)
           Requires: libc.so.6(GLIBC_2.17)(64bit)
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

解决：

#yum install glibc.i686
# yum list libstdc++*

解决方法二

#cd /etc/yum.repos.d/

#sudo vi mysql-community.repo

找到mysql-56-community

将enable置为0 enable=0
重新安装mysql sudo yum install mysql-server

--------------------------------------------

service mysqld start //没错就是这么变态，没有i，mysql+d

chkconfig mysqld on //没错就是这么变态，没有i，mysql+d

3、给mysql root用户修改密码

设置MySQL 数据库root 用户的密码：
# mysqladmin -u root password '123456'
登录数据库：
# mysql -u root -p

输入密码

MySQL 授权远程访问（先用root 登录mysql）
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '654321' WITH
GRANT OPTION;
mysql> FLUSH PRIVILEGES;

注意：本地登录和远程登录的密码是可以分开的，最好设置为不同

如果不要修改：

linux的root用户输入mysql。

-----mysql默认设置了root用户和密码。

-----Linux的root用户输入mysql的时候，会默认登陆root，无需输入用户名和密码

4、在mysql上创建用户

此处演示创建hive元数据库，并对hive用户进行授权

//创建数据库
create database if not exists hive_metadata;

//创建用户hive，密码hive，把赋予全部权限和允许任意机器远程访问（@'%' 'localhost''本机hosts名'）

//hive_metadata 是hive数据库名

grant all privileges on hive_metadata.* to 'hive'@'%' identified by 'hive';

grant all privileges on hive_metadata.* to 'hive'@'localhost' identified by 'hive';

grant all privileges on hive_metadata.* to 'hive'@'本机hosts名' identified by 'hive';

//刷新权限

flush privileges;

--------以上就已经完成了mysql的安装和创建数据库和用户--------------

--------现在以Linux非root用户登陆mysql

演示以hadoop用户登陆

[hadoop@BD05 ~]$ mysql -uhive -phive
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.1.73 Source distribution
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| hive_metadata |
| test |
+--------------------+
3 rows in set (0.00 sec)