1. 安装vmware centos的虚拟机

-省却安装vmware虚拟机管理的部分

-centos7下载地址：

2. 配置一台centos服务器的用户、密码以及权限

-centos安装名称：MySQLAAS

-centos安装路径：D:vmMySQL

-Root/密码：******.

-安装centos的图形化界面(默认，安装完毕centos之后，首次登陆root是文本命令行界面)

《鸟哥的Linux私房菜-基础学习篇》：如何安装Linux的图形界面

最本质的问题在于Linux支持的登录方式有7种，tty1-tty7, tty7就是我们常用的图形化界面，tty1-tty6都是文字命令界面的变种。

打开tty1-tty6的方式是Ctrl+ALT +[F1-F6],tty7的打开方式，是在登录tty1-6之后，启动命令 startx, 如果 X Server 有配置好，那么就可以启动图形化界面。

如果没有按照好 X Server 当然是不能启动 X Window的，所以一开始安装 LInux的时候就要选好安装的组件，或者在之后通过YUM安装相关软件。

-MySQL服务专用账户 MySQLAdmin/******.

3. 安装 MySQL 8

3.1 下载路径: 选择 MySQL Community 8.0 版本, 下载地址：

3.2 安装:

1)解压tar文件:tar -xf

2)按照以下顺序安装这些包：

mysql-community-server

mysql-community-client

mysql-community-libs

mysql-community-common

mysql-community-libs-compact

以上这些包是确保一个MySQL数据库服务正常运作的必要包。

>sudo yum install mysql-community-{server,client,common,libs}-*

3)配置

一般来说，直接运行上面的yum命令后，安装程序会在系统的各个主要目录下生成这些MySQL运行必须的文件：

Files or Resources

Location

Client programs and scripts

/usr/bin

mysqld server

/usr/sbin

Configuration file

/etc/my.cnf

Data directory

/var/lib/mysql

Error log file

For RHEL, Oracle Linux, CentOS or Fedora platforms:/var/log/mysqld.log

For SLES: /var/log/mysql/mysqld.log

/var/lib/mysql-files

System V init script

For RHEL, Oracle Linux, CentOS or Fedora platforms: /etc/init.d/mysqld

For SLES: /etc/init.d/mysql

Systemd service

For RHEL, Oracle Linux, CentOS or Fedora platforms: mysqld

For SLES: mysql

Pid file

/var/run/mysql/mysqld.pid

Socket

/var/lib/mysql/mysql.sock

Keyring directory

/var/lib/mysql-keyring

Unix manual pages

/usr/share/man

Include (header) files

/usr/include/mysql

Libraries

/usr/lib/mysql

Miscellaneous support files (for example, error messages, and character set files)

/usr/share/mysql

4)安装完毕之后的注意事项

-在安装完毕后，会在 centos 自动生成一个 mysql 的用户，一个 mysql的用户组。

-如果是MySQL8之前的版本，还可能生成一个 /usr/my.cnf文件，与 /etc/my.cnf是冲突的，因此需要把 /usr/my.cnf合并到 /etc/my.cnf里面，并且删除/usr/my.cnf

-默认安装完毕 MySQL,数据库服务并不会自动启动，我们必须手动开启服务

>systemctl start mysqld

-root用户密码是随机生成的，我们需要捕获这份密码，并修改成我们自己熟记的

[mysqladmin@SQLAAS Downloads]$ sudo grep 'temporary password' /var/log/mysqld.log

2019-09-01T15:35:49.811164Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: HJu2(khHtCG0

mysql> alter user 'root'@'localhost' identified by '1QAZ2WSX' ;

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

mysql>

mysql> alter user 'root'@'localhost' identified by 'LuckyNumber234.' ;

Query OK, 0 rows affected (0.01 sec)

-设置随机启动MySQL服务：

-添加一个 MySQL 用户，使其拥有创建数据库的权限

-MySQLAdmin/******

以下是犯的错误

>create user 'MySQLAdmin'@'localhost' identified by 'MySQLAdmin' ;

-配置远程登录允许：

>grants all on *.* 'root' ;

>ERROR 1410 (42000): You are not allowed to create a user with GRANT

加上 privileges 关键字：

> grant all privileges on *.* to 'root'@'%' ;

ERROR 1410 (42000): You are not allowed to create a user with GRANT

MySQL 8 中新建一个远程账户，必须从create user 开始：

mysql> create user 'MySQLAdmin'@'%' identified by '*******.' ;

Query OK, 0 rows affected (0.05 sec)

mysql> grant all on *.* to 'MySQLAdmin'@'%' ;

Query OK, 0 rows affected (0.05 sec)

mysql> flush privileges ;

Query OK, 0 rows affected (0.03 sec)

4. 安装中出现的错误：

-依赖报错：

[mysqladmin@SQLAAS Downloads]$ rpm -i mysql-community-server-8.0.17-1.el8.x86_64.rpm

warning: mysql-community-server-8.0.17-1.el8.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

error: Failed dependencies:

libc.so.6(GLIBC_2.28)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libcrypto.so.1.1()(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libcrypto.so.1.1(OPENSSL_1_1_0)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libssl.so.1.1()(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libssl.so.1.1(OPENSSL_1_1_0)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libssl.so.1.1(OPENSSL_1_1_1)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(CXXABI_1.3.11)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(CXXABI_1.3.8)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(CXXABI_1.3.9)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(GLIBCXX_3.4.20)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(GLIBCXX_3.4.21)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libstdc++.so.6(GLIBCXX_3.4.22)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libtirpc.so.3()(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

libtirpc.so.3(TIRPC_0.3.0)(64bit) is needed by mysql-community-server-8.0.17-1.el8.x86_64

mysql-community-client(x86-64) >= 8.0.11 is needed by mysql-community-server-8.0.17-1.el8.x86_64

mysql-community-common(x86-64) = 8.0.17-1.el8 is needed by mysql-community-server-8.0.17-1.el8.x86_64

mariadb-server is obsoleted by mysql-community-server-8.0.17-1.el8.x86_64

尝试1：调整安装顺序

- mysql-community-common-8.0.17-1.el8.x86_64.rpm

- mysql-community-debuginfo-8.0.17-1.el8.x86_64.rpm

尝试2：先升级YUM

>sudo yum update

>sudo yum install mysql-community-{server,client,common,libs}-*

以上尝试都失败！

尝试3：通过YUM安装

[mysqladmin@SQLAAS MySQL]$ sudo yum install mysql-community-server

Loaded plugins: fastestmirror, langpacks

Loading mirror speeds from cached hostfile

* base: ftp.sjtu.edu.cn

* extras: ftp.sjtu.edu.cn

* updates: mirrors.aliyun.com

Resolving Dependencies

--> Running transaction check

---> Package mysql-community-server.x86_64 0:8.0.17-1.el7 will be installed

--> Processing Dependency: mysql-community-common(x86-64) = 8.0.17-1.el7 for package: mysql-community-server-8.0.17-1.el7.x86_64

--> Processing Dependency: mysql-community-client(x86-64) >= 8.0.11 for package: mysql-community-server-8.0.17-1.el7.x86_64

--> Running transaction check

---> Package mysql-community-client.x86_64 0:8.0.17-1.el7 will be installed

---> Package mysql-community-server.x86_64 0:8.0.17-1.el7 will be installed

--> Processing Dependency: mysql-community-common(x86-64) = 8.0.17-1.el7 for package: mysql-community-server-8.0.17-1.el7.x86_64

--> Finished Dependency Resolution

Error: Package: mysql-community-server-8.0.17-1.el7.x86_64 (mysql80-community)

Requires: mysql-community-common(x86-64) = 8.0.17-1.el7

Installed: mysql-community-common-8.0.17-1.el8.x86_64 (installed)

mysql-community-common(x86-64) = 8.0.17-1.el8

Available: mysql-community-common-8.0.11-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.11-1.el7

Available: mysql-community-common-8.0.12-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.12-1.el7

Available: mysql-community-common-8.0.13-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.13-1.el7

Available: mysql-community-common-8.0.14-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.14-1.el7

Available: mysql-community-common-8.0.15-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.15-1.el7

Available: mysql-community-common-8.0.16-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.16-1.el7

Available: mysql-community-common-8.0.16-2.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.16-2.el7

Available: mysql-community-common-8.0.17-1.el7.x86_64 (mysql80-community)

mysql-community-common(x86-64) = 8.0.17-1.el7

You could try using --skip-broken to work around the problem

You could try running: rpm -Va --nofiles --nodigest

卸载掉：mysql-community-common-8.0.17-1.el8.x86_64

>sudo yum remove mysql-community-common-8.0.17-1.el8.x86_64

重新安装：mysql-community-common-8.0.17-1.el7.x86_64

>sudo yum install mysql-community-common-8.0.17-1.el7.x86_64

可以解决，但安装时间过长，需要15个小时的时间，全部花在了下载耗时上面。

有没有办法通过直接安装下载好的rpm来完成？有！

实际上，第一次下载的MySQL安装包

是 RH Linux 8/Centos8版本，而我虚拟装的是Centos7,因此必须下载 RH Linux 7 的安装包，如下：

再次安装：

-解压及安装：

>tar -xf mysql-8.0.17-1.el7.x86_64.rpm-bundle.tar

>sudo yum install mysql-community-{client,common,devel,embedded,libs,server}-*

-安装错误：

Error: Package: akonadi-mysql-1.9.2-4.el7.x86_64 (@anaconda)

Requires: mariadb-server

Removing: 1:mariadb-server-5.5.60-1.el7_5.x86_64 (@anaconda)

mariadb-server = 1:5.5.60-1.el7_5

Obsoleted By: mysql-community-server-8.0.17-1.el7.x86_64 (/mysql-community-server-8.0.17-1.el7.x86_64)

Not found

You could try using --skip-broken to work around the problem

You could try running: rpm -Va --nofiles --nodigest

解决方法：

-移除mariadb

-> sudo yum remove mariadb

->sudo yum install mysql-community-{client,common,devel,embedded,libs,server}-*

后续将在我的公众号【有关SQL】持续扩展 MySQL 的入门与进阶探索文章，敬请关注！