在openstack私有云平台上，在/root目录下编写模板flavor.yaml，创建名为“m1.flavor”、 ID 为 1234、内存为1024MB、硬盘为20GB、vcpu数量为 1的云主机类型。完成后提交控制节点的用户名、密码和IP地址到答题框。（在提交信息前请准备好yaml模板执行的环境）
/usr/bin/mysql_secure_installation: line 379: find_mysql_client: command not found
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here.
Enter current password for root (enter for none): #默认按Enter键 OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation.
Set root password? [Y/n] y
New password: #输入数据库root密码000000 Re-enter new password: #再次输入密码000000 Password updated successfully! Reloading privilege tables.. ... Success!
By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment.
Remove anonymous users? [Y/n] y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] n ... skipping.
By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment.
Remove test database and access to it? [Y/n] y \- Dropping test database... ... Success! \- Removing privileges on test database... ... Success!
Reloading the privilege tables will ensure that all changes made so far will take effect immediately.
Reload privilege tables now? [Y/n] y ... Success! Cleaning up...
All done! If you've completed all of the above steps, your MariaDB installation should now be secure.
[root@mysql1 ~]# systemctl restart mariadb [root@mysql1 ~]# mysql -uroot -p000000 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 9 Server version: 10.3.23-MariaDB-log MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]>
[root@mysql2 ~]# systemctl restart mariadb [root@mysql2 ~]# mysql -uroot -p000000 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 9 Server version: 10.3.23-MariaDB-log MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement
MariaDB [(none)]> change master to master_host='mysql1',master_user='user',master_password='000000';
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 11
Server version: 10.3.23-MariaDB-log MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> create database test; Query OK, 1 row affected (0.00 sec) MariaDB [(none)]> use test; Database changed MariaDB [test]> create table company(id int not null primary key,name varchar(50),addr varchar(255)); Query OK, 0 rows affected (0.01 sec) MariaDB [test]> insert into company values(1,"alibaba","china");
Query OK, 1 row affected (0.01 sec)
MariaDB [test]> select * from company;
+----+---------+-------+ | id | name | addr | +----+---------+-------+ | 1 | alibaba | china | +----+---------+-------+
[root@mysql2 ~]# mysql -uroot -p000000 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 12 Server version: 10.3.23-MariaDB-log MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+
| information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.00 sec)
MariaDB [(none)]> use test; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [test]> show tables; +----------------+ | Tables_in_test | +----------------+ | company | +----------------+ 1 row in set (0.00 sec) MariaDB [test]> select * from company; +----+---------+-------+ | id | name | addr | +----+---------+-------+ | 1 | alibaba | china | +----+---------+-------+ 1 row in set (0.00 sec)
[root@mycat ~]# mysql -h127.0.0.1 -P8066 -uroot -p000000 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.6.29-mycat-1.6-RELEASE-20161028204710 MyCat Server (OpenCloundDB) Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MySQL [(none)]> show databases; +----------+ | DATABASE | +----------+ | USERDB | +----------+ 1 row in set (0.001 sec) MySQL [(none)]> use USERDB Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MySQL [USERDB]> show tables; +----------------+ | Tables_in_test | +----------------+ | company | +----------------+ 1 row in set (0.003 sec) MySQL [USERDB]> select * from company; +----+---------+-------+ | id | name | addr | +----+---------+-------+ | 1 | alibaba | china | +----+---------+-------+ 1 row in set (0.005 sec)
MySQL [USERDB]> insert into company values(2,"bastetball","usa"); Query OK, 1 row affected (0.050 sec) MySQL [USERDB]> select * from company; +----+------------+-------+ | id | name | addr | +----+------------+-------+ | 1 | alibaba | china | | 2 | bastetball | usa | +----+------------+-------+ 2 rows in set (0.003 sec)