linux（Centos7）安裝mysql8.0.18

1 獲取安裝資源包 mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar

鏈接：https://pan.baidu.com/s/1QDeX-e7qXwEC6ShCc75Ocg
提取碼：hw8n

2 在/usr/local目錄下新建目錄mysql8

cd /usr/local
mkdir mysql

3 將下載的資源包（mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar）上傳到 usr/local/mysql8 目錄下，並解壓

tar -xvf mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar

4 rpm -qa | grep mariadb 命令查看 mariadb 的安裝包

5 rpm -e mariadb-libs-5.5.60-1.el7_5.x86_64 --nodeps 卸載mariadb

rpm -e mariadb-libs-5.5.60-1.el7_5.x86_64 --nodeps

6 依次安裝

mysql-community-common-8.0.15-1.el7.x86_64.rpm，
mysql-community-libs-8.0.18-1.el7.x86_64.rpm
mysql-community-client-8.0.18-1.el7.x86_64.rpm
mysql-community-server-8.0.18-1.el7.x86_64.rpm

 rpm -ivh mysql-community-common-8.0.15-1.el7.x86_64.rpm  
 rpm -ivh mysql-community-libs-8.0.18-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-client-8.0.18-1.el7.x86_64.rpm
 rpm -ivh  mysql-community-server-8.0.18-1.el7.x86_64.rpm

7 查看已安裝資源

rpm -qa | grep mysql

8 初始化

mysqld --initialize  初始化
chown mysql:mysql /var/lib/mysql -R  授權
systemctl start mysqld  開啓mysql服務
systemctl status mysqld  查看mysql 狀態

cat /var/log/mysqld.log | grep password 查看root初始密碼

10 使用root用戶登錄mysql ,並修改root用戶密碼

mysql -u root -p  #回車之後輸入前面的初始密碼也就是 Iv7fjuP,ucH+（填自己的密碼）

ALTER USER "root"@"localhost" IDENTIFIED  BY "自己的密碼";
FLUSH PRIVILEGES; #立即生效

再次用戶root 用戶登錄 輸入自己剛剛修改的密碼就可以了

11 遠程連接

use mysql;
update user set host = '%' where user ='root';  
ALTER USER 'root'@'%' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER; #更改加密方式
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '自己的密碼'; #更新用戶密碼 （我這裏爲root ）

連接成功

參考文章 [https://blog.csdn.net/a332056918/article/details/87803901]

https://www.cnblogs.com/lifan1998/p/9177731.html