I recently completed the installation of GameCP, using localhost and a specified SQL user / database. Subsequently, when adding a new machine to GameCP, I was prompted to input a command into SSH. However, my attempt resulted in an "Access denied for user 'X_cpuser'@'localhost' (using password: YES)" message.

After experimenting with using the public IP address of the machine instead of localhost or 127.0.0.1, I found that the issue persisted despite the accuracy of the provided information. It is worth noting that using the root SQL username and password was successful; however, this led to a "unable to connect to the remote" error within GameCP.

Could you advise on any potential missteps in my approach? Given that GameCP is already installed on the machine, it seems logical that it and the remote should be utilizing the same public IP. Any insights on what might be going wrong would be greatly appreciated.

It seems that the error you're experiencing could be related to the database user privileges or the way GameCP is attempting to connect to the MySQL database.

Firstly, let's ensure that the SQL user 'X_cpuser' has the necessary privileges to access the database from the specified host. You might want to check if the user has the correct permissions for both local and remote connections. If not, you can modify the user privileges using SQL commands or through a tool like phpMyAdmin.

Furthermore, when adding a new machine to GameCP, it's essential to verify that the SSH command being input is accurate and corresponds to the settings in your GameCP installation. Double-check the syntax of the command and ensure that any variables such as usernames and passwords are correctly substituted.
Regarding the use of the public IP address, while it's a good troubleshooting step, it's also important to consider any firewall or network configurations that could be affecting the connection. Make sure that the appropriate ports are open and that the remote machine can be reached from the GameCP server.

When attempting to connect using the root SQL username and password, it's crucial to be cautious as this represents a potential security risk. It's generally not recommended to use the root account for application-level connections due to the elevated privileges it holds.

To address the "unable to connect to the remote" error, it might be beneficial to review the networking setup and configurations on both the GameCP server and the remote machine. Ensuring that the correct IP addresses are being used and that there are no network restrictions in place could help resolve this issue.

The key steps to take would be to double-check the database user privileges, verify the accuracy of SSH commands, review network configurations, and avoid using the root account for application connections. By carefully addressing these aspects, you should be able to troubleshoot and resolve the connection issues between GameCP and the remote machines.