set password for 'root'@'localhost' = PASSWORD('yinzhengjie');

[尹正杰到此一游:~ yinzhengjie$ mysql -u root -pyinzhengjie
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 35
Server version: 5.7.24 MySQL Community Server (GPL)Copyright (c) 2000, 2018, 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>
[mysql>
[mysql>
[mysql>
[mysql> grant all privileges on *.* to 'root'@'172.30.1.%' identified by 'yinzhengjie';
Query OK, 0 rows affected, 1 warning (0.00 sec)[mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)[mysql> quit
Bye
[尹正杰到此一游:~ yinzhengjie$ 

bogon:~ yinzhengjie$ vi ~/.bash_profile
bogon:~ yinzhengjie$
bogon:~ yinzhengjie$ source  ~/.bash_profile
bogon:~ yinzhengjie$
bogon:~ yinzhengjie$ cat  ~/.bash_profile  | grep PATH
# Setting PATH for Python 3.6
PATH="/Library/Frameworks/Python.framework/Versions/3.6/bin:${PATH}:/usr/local/mysql/bin"
export PATH
bogon:~ yinzhengjie$
bogon:~ yinzhengjie$ mysql -uroot -pyinzhengjie
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 8.0.14 MySQL Community Server - GPLCopyright (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> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)mysql> 

mysql> CREATE USER 'yinzhengjie'@'172.30.1.10%' IDENTIFIED BY 'yinzhengjie';
Query OK, 0 rows affected (0.01 sec)mysql>
mysql> GRANT ALL PRIVILEGES ON *.* TO 'yinzhengjie'@'172.30.1.10%' WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)mysql> 

[root@node110 ~]# hostname
node110.yinzhengjie.org.cn
[root@node110 ~]#
[root@node110 ~]# hostname -i
172.30.1.110
[root@node110 ~]#
[root@node110 ~]# mysql -h 172.30.1.2 -uyinzhengjie -pyinzhengjie
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 1130 (HY000): Host '172.30.1.110' is not allowed to connect to this MySQL server
[root@node110 ~]#
[root@node110 ~]# 

使用 “node110.yinzhengjie.org.cn” 节点登陆

[root@node105 ~]# hostname
node105.yinzhengjie.org.cn
[root@node105 ~]#
[root@node105 ~]# hostname -i
172.30.1.105
[root@node105 ~]#
[root@node105 ~]# mysql -h 172.30.1.2 -uyinzhengjie -pyinzhengjie
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 8.0.14 MySQL Community Server - GPLCopyright (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> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)mysql> quit
Bye
[root@node105 ~]# 

使用 “node105.yinzhengjie.org.cn” 节点登陆