修改 mysql root 密碼
1. 進入mysql 安裝目錄
cd /usr/local/mysql/bin
2. 登錄mysql
su: Authentication failure
hyqzf202@hyqzf:/usr/local/mysql/bin$ sudo -i
root@hyqzf:~# cd /usr/local/mysql/bin/
root@hyqzf:/usr/local/mysql/bin# ./mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3189
Server version: 8.0.15 MySQL Community Server - GPL
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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>
3. 修改密碼
alter user 'root'@'%' identified by 'root';
flush privileges;
修改 mysql 端口號
1.停止 mysql 服務
service mysqld stop
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2. 在 my.cnf 文件中的 [mysqld] 下面 加上 port=3388
port = 新端口號
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3. 重啟mysql
service mysqld start
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