centos7利用yum安装mysql 8.0.12

Posted 2021-02-05 好记性不如烂笔头=》

清理原有的mysql

rpm -qa | grep mysql

#可能的显示情况如下

#mysql-community-libs-8.0.12-1.el7.x86_64

#mysql80-community-release-el7-1.noarch

#mysql-community-client-8.0.12-1.el7.x86_64

#mysql-community-common-8.0.12-1.el7.x86_64

#mysql-community-server-8.0.12-1.el7.x86_64

#通过下面的命令进行删除

yum remove mysql-xxx-xxx-  --nodeps

 

 

#查找mysql的相关文件

find / -name mysql

 

#根据自身的需求删除mysql的配置文件信息

rm -rf /var/lib/mysql

 

删除CentOS7默认的数据库mariadb

 

rpm -qa | grep mariadb

#查找mariadb

#可能出现的结果mariadb-libs-5.5.56-2.el7.x86_64

#将查找出来的结果进行强制删除

rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64

开始安装

cd /usr/src

wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

 

#安装yum源

yum localinstall mysql80-community-release-el7-1.noarch.rpm

 

#更新yum源

yum clean all

yum makecache

 

#开始安装MySQL

yum install mysql-community-server

 

#启动MySQL

systemctl start mysqld

 

#启动成功后可以查看初始化密码随机生成的

cat /var/log/mysqld.log | grep password

 

#登录MySQL修改mysql用户密码

mysql -u root -p

mysql> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘yourpassword‘;

#远程设置

mysql> use mysql;

mysql> update user set host=‘%‘ where user=‘root‘;

#授权用户名的权限，赋予任何主机访问数据的权限

mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘WITH GRANT OPTION;

mysql> FLUSH PRIVILEGES;

 

其他的几种mysql用户权限的设置方法

#允许myuser用户使用mypassword密码从任何主机连接到mysql服务器

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘%‘IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

#允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作为密码

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘192.168.1.3‘IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

 

数据库的相关操作

 

#启动mysql

systemctl start mysqld.service

 

#结束

systemctl stop mysqld.service

 

#重启

systemctl restart mysqld.service

 

#开机自启

systemctl enable mysqld.service

 

在使用Navicat for MySQL 连接 Mysql 8.0.12可能会出现问题 Client does not support authentication protocol 错误解决方法

 

#修改加密规则 （这行我没有写，不过貌似也可以）密码需要设置包含大小写字母符号和数字的格式，否则设置不会超成功

ALTER USER ‘root‘@‘%‘ IDENTIFIED BY ‘password‘ PASSWORD EXPIRE NEVER;

#更新一下用户的密码

ALTER USER ‘root‘@‘%‘ IDENTIFIED WITH mysql_native_password BY ‘password‘;

#刷新权限

FLUSH PRIVILEGES;