ubuntu 18.04 mysql 설치

1. sudo apt update

2. sudo apt install mysql-server

3. sudo mysql_secure_installation


sudo apt update
sudo apt install mysql-server
sudo mysql_secure_installation

sudo apt update

sudo apt install mysql-server

sudo mysql_secure_installation

4. sudo mysql_secure_installation


root@localhost:/etc/apache2# sudo mysql_secure_installation

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?

Press y|Y for Yes, any other key for No: y

There are three levels of password validation policy:

LOW    Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary                  file

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0
Please set the password for root here.

New password:

Re-enter new password:

Estimated strength of the password: 50
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : n

 ... skipping.
By default, MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : n

 ... skipping.
All done!

root@localhost:/etc/apache2# sudo mysql_secure_installation

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD PLUGIN can be used to test passwords

and improve security. It checks the strength of password

and allows the users to set only those passwords which are

secure enough. Would you like to setup VALIDATE PASSWORD plugin?

Press y|Y for Yes, any other key for No: y

There are three levels of password validation policy:

LOW Length >= 8

MEDIUM Length >= 8, numeric, mixed case, and special characters

STRONG Length >= 8, numeric, mixed case, special characters and dictionary file

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0

Please set the password for root here.

New password:

Re-enter new password:

Estimated strength of the password: 50

Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y

By default, a MySQL installation has an anonymous user,

allowing anyone to log into MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : n

... skipping.

By default, MySQL 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? (Press y|Y for Yes, any other key for No) : 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? (Press y|Y for Yes, any other key for No) : n

... skipping.

All done!

5. Check authentication method for MySQL users


root@localhost:/etc/apache2# sudo mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.30-0ubuntu0.18.04.1 (Ubuntu)
 
Copyright (c) 2000, 2020, 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> use mysql
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> SELECT user,host,authentication_string,plugin,host FROM mysql.user;
+------------------+-----------+-------------------------------------------+-----------------------+-----------+
| user             | host      | authentication_string                     | plugin                | host      |
+------------------+-----------+-------------------------------------------+-----------------------+-----------+
| root             | localhost |                                           | auth_socket           | localhost |
| mysql.session    | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| mysql.sys        | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| debian-sys-maint | localhost | *C93D3360F51BE0E6E42E58C4D7F4853973596949 | mysql_native_password | localhost |
+------------------+-----------+-------------------------------------------+-----------------------+-----------+
4 rows in set (0.00 sec)
 
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'StrongPassword';
Query OK, 0 rows affected (0.00 sec)
 
mysql> SELECT user,authentication_string,plugin,host FROM mysql.user;
+------------------+-------------------------------------------+-----------------------+-----------+
| user             | authentication_string                     | plugin                | host      |
+------------------+-------------------------------------------+-----------------------+-----------+
| root             | *E57EB53ADCB799E5C107333FBBF5429597A509AC | mysql_native_password | localhost |
| mysql.session    | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| mysql.sys        | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | mysql_native_password | localhost |
| debian-sys-maint | *C93D3360F51BE0E6E42E58C4D7F4853973596949 | mysql_native_password | localhost |
+------------------+-------------------------------------------+-----------------------+-----------+
4 rows in set (0.00 sec)
 
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

root@localhost:/etc/apache2# sudo mysql -uroot -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.30-0ubuntu0.18.04.1 (Ubuntu)

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> use mysql

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> SELECT user,host,authentication_string,plugin,host FROM mysql.user;

+------------------+-----------+-------------------------------------------+-----------------------+-----------+

+------------------+-----------+-------------------------------------------+-----------------------+-----------+

+------------------+-----------+-------------------------------------------+-----------------------+-----------+

4 rows in set (0.00 sec)

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'StrongPassword';

Query OK, 0 rows affected (0.00 sec)

mysql> SELECT user,authentication_string,plugin,host FROM mysql.user;

+------------------+-------------------------------------------+-----------------------+-----------+

+------------------+-------------------------------------------+-----------------------+-----------+

+------------------+-------------------------------------------+-----------------------+-----------+

4 rows in set (0.00 sec)

mysql> FLUSH PRIVILEGES;

Query OK, 0 rows affected (0.00 sec)

5.1 host가 % 일 경우


mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'StrongPassword';
Query OK, 0 rows affected (0.00 sec)

mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'StrongPassword';

Query OK, 0 rows affected (0.00 sec)

6. 수정 bind-address=127.0.0.0

vi /etc/mysql/mysql.conf.d/mysqld.cnf


bind-address = 0.0.0.0
mysqlx-bind-address = 0.0.0.0

bind-address = 0.0.0.0

mysqlx-bind-address = 0.0.0.0


sudo systemctl restart mysql

sudo systemctl restart mysql

7. ufw allow 연결 설정 Or IPtable Port open


sudo ufw allow from myIP(111.222.333.222) to any port 3306
sudo ufw reload

sudo ufw allow from myIP(111.222.333.222) to any port 3306

sudo ufw reload


  iptables -A INPUT -p tcp -s myIP(111.222.333.222) --dport 3306 -j ACCEPT

iptables -A INPUT -p tcp -s myIP(111.222.333.222) --dport 3306 -j ACCEPT

8. Mysql WorkBench 연결 테스트

참고 : 패캐지가 지원을 하지 않는 경우

sudo apt install mariadb-server-10.0


 sudo apt install mysql-server
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
xc, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  mariadb-server-10.0

E: Package 'mysql-server' has no installation candidate

$ sudo apt install mariadb-server-10.0

sudo apt install mysql-server

Reading package lists... Done

Building dependency tree... Done

Reading state information... Done

xc, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

However the following packages replace it:

mariadb-server-10.0

E: Package 'mysql-server' has no installation candidate

$ sudo apt install mariadb-server-10.0