Mysql 8.4 安装(一)（Centos7.9）

前置准备

root 环境下执行

# 关闭selinux 
vi /etc/selinux/config
# SELINUX=enforcing =>SELINUX=disabled
# 开通防火墙3306/tcp
firewall-cmd --permanent --add-port=3306/tcp
# 移除mariadb
rpm -qa|grep mariadb
# mariadb-libs-5.5.68-1.el7.x86_64
rpm -e mariadb-libs-5.5.68-1.el7.x86_64 --nodeps

下载链接获取

https://dev.mysql.com/downloads/file/?id=529414

下载&安装

下载

mkdir -p /usr/local/mysql
cd /usr/local/mysql
wget https://cdn.mysql.com//Downloads/MySQL-8.4/mysql-8.4.1-1.el7.x86_64.rpm-bundle.tar

解压并安装

# 解压
tar -xvf mysql-8.4.1-1.el7.x86_64.rpm-bundle.tar
# 安装
rpm -ivh *.rpm    --force --nodeps
# 不成功的使用下面的安装
# rpm -ivh mysql-community-common-8.4.1-1.el7.x86_64.rpm --nodeps --force
# rpm -ivh mysql-community-libs-8.4.1-1.el7.x86_64.rpm --nodeps --force
# rpm -ivh mysql-community-client-8.4.1-1.el7.x86_64.rpm --nodeps --force
# rpm -ivh mysql-community-server-8.4.1-1.el7.x86_64.rpm --nodeps --force

启动mysqld

# 启动
systemctl start mysqld
# 停止
systemctl status mysqld
# 关闭
systemctl stop mysqld
# 开机自启
systemctl enable mysqld

修改密码

• 查找随机密码

grep 'temporary password' /var/log/mysqld.log

• 登陆

mysql -u root -p
# 登陆后
ALTER USER 'root'@'localhost' IDENTIFIED BY 'xsnx&^*SA^X*&()';
# 更改密码安全等级（密码策略、密码长度），按需修改
set global validate_password.policy=LOW;
set global validate_password.length=6;
# 开启root远程登录
use mysql;
select host, user from user;
update user set host = '%' where user = 'root';
# 退出
exit
# 重启服务
systemctl restart mysqld

原味链接https://blog.csdn.net/m0_47333020/article/details/139725406