Troubleshooting

Tip

Start by checking the DDM container logs: docker compose logs -f.

Common issues

Client cannot connect to the proxy

• Confirm the DDM container is running and the listen port is published.
• Check firewall rules between the client and the DDM host.

Queries pass through but nothing is masked

• Verify the masking rules match the actual schema/column names.
• Confirm the proxy is the one the client is connected to (not the DB directly).

TODO: expand with real-world failure modes.