I recently started exploring GridDB Cloud, and I want to connect to my instance from a Java application running on a different machine. I've followed the GridDB Cloud Quick Start Guide and performed the following steps:

1. Whitelisted my IP on the GridDB Cloud portal.

2. Created a database user with the necessary credentials.

3. Checked my database URL, which follows this pattern:

griddb://<host>:<port>/defaultCluster

4. Used the Java GridDB Client to attempt a connection:

import com.toshiba.mwcloud.gs.*;

public class GridDBCloudTest {
    public static void main(String[] args) {
        try {
            Properties properties = new Properties();
            properties.setProperty("host", "<my-cloud-host>");
            properties.setProperty("port", "10001");
            properties.setProperty("clusterName", "defaultCluster");
            properties.setProperty("user", "<my-user>");
            properties.setProperty("password", "<my-password>");

            GridStoreFactory factory = GridStoreFactory.getInstance();
            GridStore store = factory.getGridStore(properties);
            System.out.println("Connected successfully!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Issue:

When running the Java application, I get the following error:

com.toshiba.mwcloud.gs.GSException: Failed to connect to GridDB Caused by: java.UnknownHostException:

What I've tried:

• Double-checked that my IP is whitelisted on the GridDB Cloud settings.
• Verified that the database user and password are correct.
• Ensured that port 10001 is open on my network.
• Tried pinging the GridDB Cloud host, but got no response.

Questions:

1. Is there a different connection string format I should use for GridDB Cloud?
2. Do I need to configure additional firewall rules beyond IP whitelisting?
3. Is there a specific Java client version required for GridDB Cloud?