How to solve connect ECONNREFUSED 165.232.157.175:3306

Queries and Resources
1

I want to connect MYSQL with retool. but I am getting errors like this how I can solve it. thanks

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3

Hello @MD_Mahmudul_Hasan,

There are a number of possibilities for why this error was returned when trying to connect with the database server.

1. MySQL Server is Not Running

  • Cause: The MySQL service on the remote server may not be running.
  • Fix:
    • Log in to the server hosting the MySQL database.
    • Check the status of MySQL using a command like:
sudo systemctl status mysql
  • Start the service if it's not running:
sudo systemctl start mysql

2. Incorrect IP or Port

  • Cause: The IP address or port number is incorrect.
  • Fix:
    • Double-check the IP address and port number.
    • Ensure that MySQL is configured to listen on the specified IP and port (3306 by default).

3. Firewall Blocking the Connection

  • Cause: A firewall on the server or your machine might be blocking the connection.
  • Fix:
    • On the server, check the firewall rules:
sudo ufw status
  • Allow MySQL through the firewall:
sudo ufw allow 3306/tcp
  • Verify that your local machine can reach the server using:
telnet 165.232.157.175 3306

4. MySQL Not Configured to Accept Remote Connections

  • Cause: By default, MySQL may only accept connections from localhost.
  • Fix:
    1. Edit the MySQL configuration file (usually /etc/mysql/mysql.conf.d/mysqld.cnf or /etc/my.cnf) and ensure bind-address is set to 0.0.0.0:
bind-address = 0.0.0.0
  1. Restart MySQL to apply changes:
sudo systemctl restart mysql

5. User Privileges

  • Cause: The MySQL user you're using might not have the right permissions for remote access.
  • Fix:
    • Log in to MySQL locally:
mysql -u root -p
  • Grant access to the user for the remote IP (or % for all IPs):
GRANT ALL PRIVILEGES ON *.* TO 'your_user'@'%' IDENTIFIED BY 'your_password';
FLUSH PRIVILEGES;

6. Network Issues

  • Cause: Network connectivity issues between your machine and the server.
  • Fix:
    • Ping the server to ensure it's reachable:
ping 165.232.157.175
  • Check if any intermediate network restrictions are in place.

7. Port Already in Use

  • Cause: Another service is using port 3306 on the server.
  • Fix:
    • Check for port usage on the server:
sudo netstat -tuln | grep 3306
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4

Thank you so much.
Solved!

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