linux 安装mysql 8.0(yum方式)

先卸载MariaDB

# 检查有没有 mariadb
rpm -qa | grep -i mariadb

# 卸载mariadb
rpm -e --nodeps mariadb-libs-5.5.52-1.el7.x86_64

检查是否有mysql残留

# 检查mysql是否有残留
rpm -qa | grep mysql

# 有的话也卸载
rpm -e  --nodeps xxxxx

下载mysql库

wget https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm

安装mysql库

yum -y install mysql80-community-release-el7-3.noarch.rpm
yum install mysql-community-libs-compat -y

重新获取mysql的GPG

rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

安装mysql

yum -y install mysql-community-server

开启mysql服务

systemctl start mysqld

• 检查mysql运行状态

systemctl status mysqld

查看默认密码

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

修改密码&开启远程访问

[root@ybchen-1 mysql]# 
[root@ybchen-1 mysql]# pwd
/var/lib/mysql
[root@ybchen-1 mysql]# 
[root@ybchen-1 mysql]# cat /var/log/mysqld.log | grep password
2023-05-26T09:41:05.264719Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: PNkUvy2E.Pd.
[root@ybchen-1 mysql]# 
[root@ybchen-1 mysql]# 
[root@ybchen-1 mysql]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 8.0.33

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

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> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Root1234.';
Query OK, 0 rows affected (0.01 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> 
mysql> update user set host = '%' where user = 'root';
ERROR 1046 (3D000): No database selected
mysql> update mysql.user set host = '%' where user = 'root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> 

　　注意：修改好mysql远程访问后，需要重新刷新权限：flush privileges;