1.系統版本及mysql下載地址

作業系統：Centos 7.4

mysql資料庫版本：mysql8.0.11

2.安裝新版mysql之前，我們需要將系統自帶的mariadb-lib解除安裝

[[email protected] software-package]$ rpm -qa|grep mariadb
mariadb-libs-5.5.56-2.el7.x86_64
[[email protected] software-package]$ sudo rpm -e mariadb-libs-5.5.56-2.el7.x86_64 --nodeps

3.到mysql的官網下載最新版mysql的rpm集合包：mysql-8.0.11-1.el7.x86_64.rpm-bundle.tar

4.上傳mysql-8.0.11-1.el7.x86_64.rpm-bundle.tar到linux伺服器，並解壓tar包

[[email protected] mysql]$ ls
mysql-community-client-8.0.11-1.el7.x86_64.rpm           mysql-community-libs-8.0.11-1.el7.x86_64.rpm               mysql-community-server-minimal-8.0.11-1.el7.x86_64.rpm
mysql-community-common-8.0.11-1.el7.x86_64.rpm           mysql-community-libs-compat-8.0.11-1.el7.x86_64.rpm        mysql-community-test-8.0.11-1.el7.x86_64.rpm
mysql-community-devel-8.0.11-1.el7.x86_64.rpm            mysql-community-minimal-debuginfo-8.0.11-1.el7.x86_64.rpm
mysql-community-embedded-compat-8.0.11-1.el7.x86_64.rpm  mysql-community-server-8.0.11-1.el7.x86_64.rpm
 

5.其中最簡單的安裝mysql-server服務，只需要安裝如下4個軟體包即可，我們可以使用rpm -ivh命令進行安裝

sudo rpm -ivh mysql-community-common-8.0.11-1.el7.x86_64.rpm
sudo rpm -ivh mysql-community-libs-8.0.11-1.el7.x86_64.rpm --（依賴於common）
sudo rpm -ivh mysql-community-client-8.0.11-1.el7.x86_64.rpm --（依賴於libs）
sudo rpm -ivh mysql-community-server-8.0.11-1.el7.x86_64.rpm --（依賴於client、common）
 

注意：這一步可能遇到報錯

[[email protected] mysql]$ sudo rpm -ivh mysql-community-server-8.0.11-1.el7.x86_64.rpm 
警告：mysql-community-server-8.0.11-1.el7.x86_64.rpm: 頭V3 DSA/SHA1 Signature, 金鑰 ID 5072e1f5: NOKEY
錯誤：依賴檢測失敗：
	libaio.so.1()(64bit) 被 mysql-community-server-8.0.11-1.el7.x86_64 需要
	libaio.so.1(LIBAIO_0.1)(64bit) 被 mysql-community-server-8.0.11-1.el7.x86_64 需要
	libaio.so.1(LIBAIO_0.4)(64bit) 被 mysql-community-server-8.0.11-1.el7.x86_64 需要

解決方法：yum install libaio

6.初始化mysql資料庫

[[email protected] mysql]$ sudo mysqld --initialize  //該命令會在/var/log/mysqld.log生成隨機密碼

7.修改mysql資料庫目錄的所屬使用者及其所屬組，然後啟動mysql資料庫

[[email protected] lib]$ sudo chown mysql:mysql /var/lib/mysql -R
[[email protected] lib]$ systemctl start mysqld.service

8.根據第6步中的密碼，更改root使用者的密碼，新版的mysql必須先修改root使用者的密碼，否則登入後是不能執行任何命令的

[[email protected] lib]$ mysql_secure_installation  //根據提示修改root使用者密碼

9.安裝完成，接下來既可以正常操作mysql

[[email protected] lib]$ mysql -uroot -pxxxx
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 8.0.11 MySQL Community Server - GPL

Copyright (c) 2000, 2018, 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 |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.01 sec)

mysql> exit