1、下载yum源

我的测试环境如下：

[root@test ~]# cat /etc/redhat-release
CentOS release 6.7 (Final)

所以下载了centos6系统yum源:

wget http://dev.mysql.com/get/mysql57-community-release-el6-7.noarch.rpm

3、修改yum源配置

vim /etc/yum.repos.d/mysql-community.repo

安装mysql5.6操作

1）、将其他版本enabled=1更改为enabled=0

2）、将5.6版本enabled=0更改为enabled=1

# Enable to use MySQL 5.6

[mysql56-community]

name=MySQL 5.6 Community Server

baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/6/$basearch/

enabled=1

gpgcheck=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

4、开始现在安装包并安装

[root@test ~]# yum install mysql-community-server

已加载插件：fastestmirror, security

设置安装进程

Loading mirror speeds from cached hostfile

* base: mirrors.aliyun.com

* epel: mirrors.yun-idc.com

* extras: mirrors.aliyun.com

* updates: mirrors.aliyun.com

解决依赖关系

--> 执行事务检查

---> Package mysql-community-server.x86_64 0:5.6.47-2.el6 will be 安装

--> 处理依赖关系 mysql-community-common(x86-64) = 5.6.47-2.el6，它被软件包 mysql-community-server-5.6.47-2.el6.x86_64 需要

--> 处理依赖关系 mysql-community-client(x86-64) >= 5.6.10，它被软件包 mysql-community-server-5.6.47-2.el6.x86_64 需要

--> 执行事务检查

---> Package mysql-community-client.x86_64 0:5.6.47-2.el6 will be 安装

--> 处理依赖关系 mysql-community-libs(x86-64) >= 5.6.10，它被软件包 mysql-community-client-5.6.47-2.el6.x86_64 需要

---> Package mysql-community-common.x86_64 0:5.6.47-2.el6 will be 安装

--> 执行事务检查

---> Package mysql-community-libs.x86_64 0:5.6.47-2.el6 will be 安装

--> 完成依赖关系计算

依赖关系解决

================================================================================================================================================================

软件包 架构 版本 仓库 大小

================================================================================================================================================================

正在安装:

mysql-community-server x86_64 5.6.47-2.el6 mysql56-community 77 M

为依赖而安装:

mysql-community-client x86_64 5.6.47-2.el6 mysql56-community 34 M

mysql-community-common x86_64 5.6.47-2.el6 mysql56-community 341 k

mysql-community-libs x86_64 5.6.47-2.el6 mysql56-community 3.6 M

事务概要

================================================================================================================================================================

Install 4 Package(s)

总文件大小：114 M

总下载量：77 M

Installed size: 478 M

确定吗？[y/N]：y

下载软件包：

mysql-community-server-5.6.47-2.el6.x86_64.rpm | 77 MB 43:30

warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

Importing GPG key 0x5072E1F5:

Userid : MySQL Release Engineering <mysql-build@oss.oracle.com>

Package: mysql57-community-release-el6-7.noarch (installed)

From : /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

确定吗？[y/N]：y

运行 rpm_check_debug

执行事务测试

事务测试成功

执行事务

Warning: RPMDB altered outside of yum.

正在安装 : mysql-community-common-5.6.47-2.el6.x86_64 1/4

正在安装 : mysql-community-libs-5.6.47-2.el6.x86_64 2/4

正在安装 : mysql-community-client-5.6.47-2.el6.x86_64 3/4

正在安装 : mysql-community-server-5.6.47-2.el6.x86_64 4/4

Verifying : mysql-community-libs-5.6.47-2.el6.x86_64 1/4

Verifying : mysql-community-common-5.6.47-2.el6.x86_64 2/4

Verifying : mysql-community-client-5.6.47-2.el6.x86_64 3/4

Verifying : mysql-community-server-5.6.47-2.el6.x86_64 4/4

已安装:

mysql-community-server.x86_64 0:5.6.47-2.el6

作为依赖被安装:

mysql-community-client.x86_64 0:5.6.47-2.el6 mysql-community-common.x86_64 0:5.6.47-2.el6 mysql-community-libs.x86_64 0:5.6.47-2.el6

完毕！

5、启动mysql服务

[root@test ~]# service mysqld start

初始化 MySQL 数据库： 2020-03-30 23:47:20 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2020-03-30 23:47:20 0 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.

…

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !

To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'

/usr/bin/mysqladmin -u root -h test password 'new-password'

Alternatively you can run:

/usr/bin/mysql_secure_installation

which will also give you the option of removing the test

…

Note: new default config file not created.

Please make sure your config file is current

WARNING: Default config file /etc/my.cnf exists on the system

This file will be read by default by the MySQL server

If you do not want to use this, either remove it, or use the

--defaults-file argument to mysqld_safe when starting the server

[确定]

正在启动 mysqld： [确定]

6、查看状态和版本

[root@test ~]# chkconfig --list | grep mysqld

mysqld 0:关闭 1:关闭 2:关闭 3:启用 4:启用 5:启用 6:关闭

[root@test ~]# mysqladmin --version

mysqladmin Ver 8.42 Distrib 5.6.47, for Linux on x86_64

[root@test ~]# mysqladmin -u root password "mysql123"

Warning: Using a password on the command line interface can be insecure.

[root@test ~]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.6.47 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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.

7、设置root用户密码

[root@test ~]# mysqladmin -u root password "mysql123"

Warning: Using a password on the command line interface can be insecure.

8、查看数据库和创建数据库

[root@test mysql]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 5

Server version: 5.6.47 MySQL Community Server (GPL)

mysql> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| mysql |

| performance_schema |

+--------------------+

3 rows in set (0.00 sec)

mysql> CREATE DATABASE testtb DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

Query OK, 1 row affected (0.00 sec)

mysql> show databases;

+--------------------+

| Database |

+--------------------+

| information_schema |

| mysql |

| performance_schema |

| testtb |

+--------------------+

4 rows in set (0.00 sec)

9、查看数据库目录

[root@test ~]# ls /var/lib/mysql -al

总用量 110616

drwxr-xr-x 5 mysql mysql 4096 3月 31 00:19 .

drwxr-xr-x. 30 root root 4096 3月 30 20:57 ..

-rw-rw---- 1 mysql mysql 56 3月 30 23:47 auto.cnf

-rw-rw---- 1 mysql mysql 12582912 3月 30 23:47 ibdata1

-rw-rw---- 1 mysql mysql 50331648 3月 30 23:47 ib_logfile0

-rw-rw---- 1 mysql mysql 50331648 3月 30 23:47 ib_logfile1

drwx------ 2 mysql mysql 4096 3月 30 23:47 mysql

srwxrwxrwx 1 mysql mysql 0 3月 30 23:47 mysql.sock

drwx------ 2 mysql mysql 4096 3月 30 23:47 performance_schema

drwx------ 2 mysql mysql 4096 3月 31 00:19 testtb