update

computer_science/database/mysql_server_installation_and_configuration_on_Ubuntu_Server_22.04.md

@@ -1,28 +1,29 @@
 # mysql server installation and configuration on Ubuntu Server 22.04
 
+*Reference titles:*
+
+*https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-22-04*
+
+
+
 1. Update ubuntu server first:
+
    ```console
    sudo apt update
    ```
 
-   
-
 2. Then upgrade ubuntu server:
 
    ```console
    sudo apt upgrade
    ```
 
-   
-
 3. Install mysql server:
 
    ```console
    sudo apt install mysql-server
    ```
 
-
-
 4. Start mysql service:
 
    ```console
@@ -35,6 +36,84 @@
 
 ​		![image-20230627172104628](doc/readme/img/install_and_configure_mysql_server_on_ubuntu/image-20230627172104628.png)
 
+5. Start mysql initial configuration:
+
+   ```console
+   sudo mysql_secure_installation
+   ```
+
+   Do it step by step following the prompt.
+
+5. Grant specific ip to access this mysql server.
+
+   Enter mysql console:
+
+   ```console
+   sudo mysql -u root -p
+   ```
+
+   Create root user for specific ip:
+
+   ```console
+   CREATE USER 'root'@'your-specific-ip' IDENTIFIED WITH mysql_native_password BY 'your-password';
+   ```
+
+   Grant specific ip to access mysql:
+
+   ```console
+   GRANT ALL PRIVILEGES ON *.* TO 'root'@'your-specific-ip' WITH GRANT OPTION;
+   ```
+
+   ```console
+   FLUSH PRIVILEGES;
+   ```
+
+   ```console
+   exit;
+   ```
+
+6. Configure your mysql server to allow dedicated IPs to access.
+
+   First, backup mysql server configuration file:
+   
+   ```console
+   sudo cp /etc/mysql/mysql.conf.d/mysqld.conf /etc/mysql/mysql.conf.d/mysqld.conf.bak
+   ```
+   
+   Second, edit the configuration file to allow remote access. Open mysqld.conf and edit:
+   
+   ```console
+   sudo vim  /etc/mysql/mysql.conf.d/mysqld.conf
+   ```
+   
+   Change bind-address from 127.0.0.1 to 0.0.0.0:
+
+​		![image-20230627183522646](doc/readme/img/mysql_server_installation_and_configuration_on_Ubuntu_Server_22.04/image-20230627183522646.png)
+
+​	   Save the file and quit (via vim wq).
+
+7. Restart mysql service:
+
+   ```console
+   sudo systemctl restart mysql
+   ```
+
+8. Configure mysql server to allow remote access from specific ip.
+
+9. For security reasons, **NEVER** allow any unknown ip address to access your server. Enable and configure your firewall to allow dedicated IPs to access mysql serivice on this server:
+
+   ```console
+   sudo ufw enable
+   sudo ufw allow from <your-specific-ip> to any port 3306
+   sudo ufw reload
+   sudo ufw status
+   ```
+
+
+​		If everything is configured correctly, you'll see things like this:
+
+​		![image-20230627182439999](doc/readme/img/mysql_server_installation_and_configuration_on_Ubuntu_Server_22.04/image-20230627182439999.png)
 
+10. Now you can test the connection to mysql server through Navicat:
 
-5. 
+    ![image-20230627185346672](doc/readme/img/mysql_server_installation_and_configuration_on_Ubuntu_Server_22.04/image-20230627185346672.png)