mysql有两种安装方式：源码包安装和二进制包安装
本文描述的是二进制安装包，下载目录：https://dev.mysql.com/downloads/mysql/
选择对应位数的文件下载 ~
文件放置至 /home 路径
1、解压到/usr/local/目录下
[root@centos7.5 /]# cd home
[root@centos7.5 home]# ls
mysql-8.0.15-linux-glibc2.12-x86_64.tar.xz
[root@centos7.5 home]# tar xf mysql-8.0.15-linux-glibc2.12-x86_64.tar.xz -C /usr/local/
2、目录/usr/lcoal/下创建链接
[root@centos7.5 /]# cd usr/local/
[root@centos7.5 local]# ln -sn mysql-8.0.15-linux-glibc2.12-x86_64 mysql
3、创建mysql用户和所属组
[root@centos7.5 ~]# groupadd mysql
[root@centos7.5 ~]# useradd -r -g mysql mysql
4、设置/usr/local/mysql目录下所有文件为root主，mysql组
[root@centos7.5 /]# cd usr/local/mysql/
[root@centos7.5 mysql]# chown -R root.mysql ./*
5、创建目录存放mysql数据
[root@centos7.5 mysql]# mkdir -pv /data/mysql
6、修改/data/mysql/目录的属主属组为mysql
[root@centos7.5 mysql]# chown -R mysql.mysql /data/mysql/
7、编辑环境变量
[root@centos7.5 mysql]# vim /etc/profile.d/mysql.sh
i 进入编辑模式
输入 export PATH=/usr/local/mysql/bin:$PATH
esc按键 :wq 保存并退出
8、重新加载mysql.sh文件
[root@centos7.5 mysql]# . /etc/profile.d/mysql.sh
9、初始化mysql
[root@centos7.5 mysql]# ./bin/mysqld --initialize --user=mysql --datadir=/data/mysql --basedir=/usr/local/mysql
***记下生成的密码 ，若不生成密码，设置空密码：--initialize后加-insecure
10、创建etc目录，将/etc/my.cnf复制到/usr/local/mysql/etc目录下
[root@centos7.5 mysql]# mkdir etc
[root@centos7.5 mysql]# cp /etc/my.cnf etc/
11、编辑/usr/local/mysql/etc.cnf
[root@centos7.5 mysql]# cd etc/
[root@centos7.5 etc]# vim my.cnf
[mysqld]
datadir=/data/mysql
socket=/tmp/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/usr/local/mysql/logs/error.log
pid-file=/var/run/mysql/mysql.pid
#
# include all files from the config directory
#
!includedir /usr/local/mysql/etc/my.cnf.d
esc按键 :wq 保存并退出
12、根据my.cnf文件路径配置，创建mysql目录下对应的目录和文件
[root@centos7.5 etc]# mkdir my.cnf.d
13、创建logs目录
[root@centos7.5 mysql]# mkdir logs
14、设置目录所属主，所属组
[root@centos7.5 mysql]# chown -R root.mysql logs
15、创建错误日志文件
[root@centos7.5 logs]# touch error.log
16、设置错误日志所属主和所属组
[root@centos7.5 logs]# chown -R mysql.mysql error.log
17、将目录/usr/local/mysql/support-files/mysql.server复制到目录/etc/init.d/mysqld
[root@centos7.5 support-files]# cp mysql.server /etc/init.d/mysqld
18、启动脚本
[root@centos7.5 etc]# service mysqld start
Starting MySQL.
19、登录（/usr/local或/data目录下）设置密码
[root@centos7.5 local]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 23
Server version: 8.0.15 MySQL Community Server - GPL
Copyright (c) 2000, 2019, 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> set password='123456
Query OK, 0 rows affected (0.01 sec)
mysql> quit;
--------------------OK！ヾ(o◕∀◕)ﾉヾ 已安装成功！--------------------
如果使用navicat连接数据库出现异常
[ERROR 1130: Host 'xxx.xxx.xxx.xxx' is not allowed to connect to thisMySQL server ]
更新user表权限可能会帮到你哦~
mysql> select host,user,plugin from user where user = 'root';
+-----------+------+-----------------------+
| host | user | plugin |
+-----------+------+-----------------------+
| localhost | root | caching_sha2_password |
+-----------+------+-----------------------+
1 row in set (0.00 sec)
mysql> update user set host = '%' where user = 'root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> flush privileges;
mysql> select host,user,plugin from user where user = 'root';
+------+------+-----------------------+
| host | user | plugin |
+------+------+-----------------------+
| % | root | caching_sha2_password |
+------+------+-----------------------+
1 row in set (0.00 sec)
--------------------OK！ヾ(o◕∀◕)ﾉヾ 已配置成功！--------------------
---------------------
作者：冰城岩帝
来源：CSDN
原文：https://blog.csdn.net/qq_34151719/article/details/89675188
版权声明：本文为博主原创文章，转载请附上博文链接！
