The DNS_HOSTNAME_NOT_FOUND error occurs when there's an NXDOMAIN error during the DNS resolution while attempting to connect to a private IP from an external rewrite. This error indicates that the domain being requested does not exist.
DNS_HOSTNAME_NOT_FOUND:
Bad Gateway
I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._v7-_v79_Q.kEoXNQUHcA8QCIB_rAf5x6CjUKyoy4GW5y0g6anE81o/docs/errors/DNS_HOSTNAME_NOT_FOUND to understand what's happening.
Please help me resolve this by:
1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error
2. **Explain the root cause**: Break down why this error occurred:
- What was the code actually doing vs. what it needed to do?
- What conditions triggered this specific error?
- What misconception or oversight led to this?
3. **Teach the concept**: Help me understand the underlying principle:
- Why does this error exist and what is it protecting me from?
- What's the correct mental model for this concept?
- How does this fit into the broader framework/language design?
4. **Show warning signs**: Help me recognize this pattern in the future:
- What should I look out for that might cause this again?
- Are there similar mistakes I might make in related scenarios?
- What code smells or patterns indicate this issue?
5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs
My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.
To troubleshoot this error, follow these steps:
- Review DNS configuration: Check the DNS configuration to ensure that the domain being requested is correctly set up and registered
- Verify domain registration: Ensure that the domain has been registered and is currently active
- Check for private IP addresses: Ensure that the request isn't attempting to connect to a private IP address from an external source
- Review application logs: Inspect the application logs for any warnings or errors related to DNS or the attempted connections