Centos7.9 安装mysql8.4.3-lts 记录过程

1、下载并上传mysql rpm安装包

tar -xvf mysql-8.4.3-1.el7.x86_64.rpm-bundle.tar

2、按照如下顺序执行安装；如果有依赖缺少，执行yum -y install 依赖名称

rpm -ivh mysql-community-common-8.4.3-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.4.3-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.4.3-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.4.3-1.el7.x86_64.rpm
rpm -ivh mysql-community-icu-data-files-8.4.3-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.4.3-1.el7.x86_64.rpm

 

3、修改配置文件

vi /etc/my.cnf

在[mysqld]组下添加如下内容

datadir=/data/program/mysql/data  ##这个目录根据自己的实际情况而定port=3306sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
character-set-server=utf8
collation-server=utf8_general_ci
lower_case_table_names=1
max_connections = 10000
mysql_native_password=ON
skip-grant-tables ##修改完密码后注销掉该行，重启mysql

 

4、安装完成后会有mysql:mysql的用户；如果没有则手动添加mysql组和mysql用户

chown -R mysql:mysql /data/program/mysql/data  ##my.cnf中的datadir目录

5、启动mysql,查看路径下是否有mysql数据文件

systemctl start mysqld

6、查看临时生成的密码，登陆后修改密码

cat /var/log/mysqld.log | grep 'temp'

 

mysql -uroot -p
flush privileges;
alter user 'root'@'localhost' identified with mysql_native_password by 'new_password';//新密码最低8位、大小写、特殊字符
flush privileges;

7、注释掉my.cnf里面的skip-grant-tables，然后重新启动mysql

systemctl restart mysqld

8、新增远程访问用户root或者其他名,建议使用别的名称

mysql -uroot -p #输入修改后的密码
use mysql;
create user 'root'@'%' identified with mysql_native_password by '新密码';
grant all privileges on *.* to 'root'@'%';
flush privileges;

9、加入开机启动

systemctl enable mysqld

10、远程连接测试