How to Fix “Host is Not Allowed to Connect to MariaDB Server” Error in XAMP, MAMP, and WAMP Server

Hello Dev, welcome to this journal article where we will discuss everything about the error message “Host is not Allowed to Connect to MariaDB Server”. As you might already know, MariaDB is an open-source database management system that is widely used by developers across the globe. However, sometimes when you try to connect to a MariaDB server, you might encounter an error that says “Host is not Allowed to Connect to MariaDB Server”. This error can be frustrating, but don’t worry, we’ve got you covered.

What Causes “Host is not Allowed to Connect to MariaDB Server” Error?

Before we dive into the solution, let’s first understand what causes this error. There are several reasons why you might encounter this error, including:

1. The MariaDB server is not running.
2. You are trying to connect to the wrong port.
3. The firewall is blocking the connection.
4. The username and password combination is incorrect.
5. The user does not have sufficient privileges to connect to the MariaDB server.

MariaDB Server is Not Running

The most common reason for this error is that the MariaDB server is not running. To check if the server is running, you can follow these steps:

Step	Command
Step 1	Open the command prompt or terminal.
Step 2	Type the following command:
	For Windows: netstat -ano | findstr :3306 For Mac: sudo lsof -i :3306
Step 3	If the server is running, you will see a result similar to this:
	TCP        0.0.0.0:3306        0.0.0.0:0            LISTENING        1524

If the server is not running, you will see an error message. In this case, you need to start the MariaDB server using the following command:

sudo /opt/lampp/lampp start

For MAMP, you can click on the “Start Servers” button in the MAMP control panel. For WAMP, you can click on the WAMP icon in the system tray and select “Start All Services”.

You Are Trying to Connect to the Wrong Port

Another reason for this error is that you are trying to connect to the wrong port. By default, MariaDB uses port 3306. However, some systems might use a different port. To check which port your system is using, you can follow these steps:

Step	Command
Step 1	Open the MariaDB configuration file using a text editor.
Step 2	Search for the line that starts with “port”.
Step 3	The value after “port” is the port number that your system is using.

If you are trying to connect to a different port, you need to specify the port number in your connection string. For example:

mysql -u username -p -h hostname -P portnumber

The Firewall is Blocking the Connection

If the firewall is blocking the connection, you will need to open the port that is used by MariaDB. To do this, you can follow these steps:

Step	Command
Step 1	Open the firewall configuration file using a text editor.
Step 2	Add a rule that allows incoming traffic on the MariaDB port.
Step 3	Save the file and restart the firewall.

The Username and Password Combination is Incorrect

If the username and password combination is incorrect, you will need to reset the password for the user. To do this, you can follow these steps:

Step	Command
Step 1	Open the MariaDB command prompt or terminal.
Step 2	Type the following command:
	SET PASSWORD FOR 'user'@'hostname' = PASSWORD('newpassword');

Replace “user” with the name of the user and “hostname” with the name of the host. You will also need to replace “newpassword” with the new password that you want to set.

The User Does Not Have Sufficient Privileges to Connect to the MariaDB Server

If the user does not have sufficient privileges to connect to the MariaDB server, you will need to grant the necessary privileges. To do this, you can follow these steps:

Step	Command
Step 1	Open the MariaDB command prompt or terminal.
Step 2	Type the following command:
	GRANT ALL PRIVILEGES ON *.* TO 'user'@'hostname' IDENTIFIED BY 'password';

Replace “user” with the name of the user, “hostname” with the name of the host, and “password” with the password for the user. This command grants all privileges to the user on all databases.

Conclusion

That’s it, Dev! We hope this article has helped you fix the “Host is not Allowed to Connect to MariaDB Server” error. If you are still encountering the error, feel free to contact us, and we’ll be happy to help.

FAQ

1. What is MariaDB?

MariaDB is an open-source database management system that is widely used by developers across the globe. It is a fork of MySQL and is designed to be a drop-in replacement for MySQL.

2. How do I start the MariaDB server?

To start the MariaDB server, you can use the following command:

sudo /opt/lampp/lampp start

For MAMP, you can click on the “Start Servers” button in the MAMP control panel. For WAMP, you can click on the WAMP icon in the system tray and select “Start All Services”.

3. How do I check which port my MariaDB server is using?

To check which port your MariaDB server is using, you can open the MariaDB configuration file using a text editor and search for the line that starts with “port”. The value after “port” is the port number that your system is using.

4. How do I reset the password for a user in MariaDB?

To reset the password for a user in MariaDB, you can use the following command:

SET PASSWORD FOR 'user'@'hostname' = PASSWORD('newpassword');

Replace “user” with the name of the user and “hostname” with the name of the host. You will also need to replace “newpassword” with the new password that you want to set.

5. How do I grant privileges to a user in MariaDB?

To grant privileges to a user in MariaDB, you can use the following command:

GRANT ALL PRIVILEGES ON *.* TO 'user'@'hostname' IDENTIFIED BY 'password';

Replace “user” with the name of the user, “hostname” with the name of the host, and “password” with the password for the user. This command grants all privileges to the user on all databases.