卸載MariaDB

1.列出所有安裝的MariaDB rpm 包

rpm -qa | grep mariadb

2.強制卸載

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

安裝MySQL

1. 環(huán)境

CentOS7.5

2. 獲取MySQL最新版 rpm包

yum倉庫下載MySQL

yum localinstall https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm

3. yum安裝MySQL

yum install mysql-community-server

4.?啟動MySQL服務

service mysqld start

5. MySQL服務狀態(tài)

service mysqld status

6. 查看初始密碼

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

7. 本地MySQL客戶端登錄

mysql -u root -p

8.?修改root登錄密碼

ALTER USER 'root'@'localhost' IDENTIFIED BY [email?protected]';

9 .刷新

flush privileges;

10.?設置開機啟動

systemctl enable mysqld.service

11.?遠程連接授權

use mysql;

select user,host from user;

update user set host = '%' where user = 'root'; #任意ip都可以連

update user set host='your ip' where user='root'; //指定ip

flush privileges;

12.?重啟MySQL

systemctl restart mysqld;

13.?開放3306端口

firewall-cmd --permanent --zone=public --add-port=3306/tcp

firewall-cmd --reload

總結

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