安裝步驟如下:
1、檢查系統是否已經裝有MySQL:
rpm -qa | grep mysql
如果沒有顯示任何結果,則說明之前系統沒有安裝過MySQL,
2、下載MySQL的repo源:
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
執行命令如果報錯:-bash:wget:未找到,則安裝插件:
yum -y install wget
3、安裝mysql-community-release-el7-5.noarch.rpm包:
sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm
4、安裝MySQL:
sudo yum install mysql-server
等待下載完輸入:y 回車,

5、重置MySQL密碼:
mysql -u root
如果報錯,可能是訪問權限的問題,執行下一步:
chown root /var/lib/mysql/
6、重啟MySQL服務:
service mysqld restart
7、設定MySQL登錄密碼:
service mysqld restart
use mysql;
update user set password=password('123456') where user='root';
exit;
重啟MySQL服務:
service mysqld restart
8、設定root賬戶和遠程連接密碼:
mysql -u root -p
GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "root";
9、重啟服務器:
service mysqld restart
10、關閉防火墻:
systemctl stop firewalld.service
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