linux 安装mysql8

文章借鉴于 linux下安装mysql8

1 linux 下载 mysql8

wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

2 解压

xz -d mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

解压到 /usr/local/mysql/ ，并修改名字位mysql

tar -xvf mysql-8.0.20-linux-glibc2.12-x86_64.tar -C /usr/local/mysql

3 创建用户组及用户和密码

groupadd mysql
useradd -g mysql mysql

4 授权用户

chown -R mysql.mysql /usr/local/mysql

5 编辑my.cnf文件

vim /etc/my.cnf
输入一下内容

[mysqld]
user=root
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
port=3306
max_connections=200
max_connect_errors=10
character-set-server=utf8
default-storage-engine=INNODB
default_authentication_plugin=mysql_native_password
lower_case_table_names=1
group_concat_max_len=102400
[mysql]
default-character-set=utf8
[client]
port=3306
default-character-set=utf8

6 进入到bin目录下

初始化基础信息，最后一行后面会有个随机的初始密码保存下来一会登录要用(如果忘记了就删掉data重新初始化)

./mysqld --initialize

注意末尾的管理员临时登录密码

7 添加mysqld服务到系统

先返回到mysql目录

cd …
cp -a ./support-files/mysql.server /etc/init.d/mysql

8 授权以及添加服务

chmod +x /etc/init.d/mysql
chkconfig --add mysql

9 启动mysql

service mysql start

10 将mysql添加到命令服务

ln -s /usr/local/mysql/bin/mysql /usr/bin

11 登录mysql

mysql -uroot -pC3kGvKhLm,0=

12 更改root用户的密码

ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY '123;
flush privileges;

13 更改mysql 的远程连接权限

use mysql;
update user set host=‘%’ where user = ‘root’;
flush privileges;

14 关闭防火墙

查看防火墙状态
sudo firewall-cmd --state
关闭防火墙命令：systemctl stop firewalld.service
开启防火墙：systemctl start firewalld.service
关闭开机自启动：systemctl disable firewalld.service
开启开机启动：systemctl enable firewalld.service

开启远程连接