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Uptime Monitoring Logs

After setting up your uptime monitors, you’ll want to track their results to ensure your services are functioning properly. Metoro provides detailed logs allowing you to analyze performance and troubleshoot issues.

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Finding Uptime Monitoring Logs

  1. Navigate to the Logs page in your Metoro dashboard
  2. Use the following filters to find uptime monitoring logs:
    • Service name: uptime-monitor
    • Environment: metoro-internal
    • Severity: All (to see both successes and failures)

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Log Content

Each log entry contains detailed information about a monitor check:

For successful checks:

  • Log line: Uptime check succeeded
  • Attributes include:
    • check_type: Whether this was an HTTP or TCP check
    • response_time_ms: How long the request took to complete
    • For HTTP checks:
      • endpoint: The URL that was checked
      • status_code: The HTTP status code received
      • expected_status_code: The pattern you configured
      • actual_response_body: The body content returned (may be truncated for large responses)
    • For TCP checks:
      • host: The hostname or IP address
      • port: The TCP port number

Successful TCP Check Log Line

Successful HTTP Check Log Line

For failed checks:

  • Log line: Uptime check failed
  • Attributes include:
    • error: Detailed reason for the failure (e.g., “status code mismatch”, “response body mismatch”, “TCP Dial failed”)
    • check_type: Whether this was an HTTP or TCP check
    • response_time_ms: How long the request took before failing
    • Other attributes as described for successful checks

Failed TCP Check Log Line

Failed HTTP Check Log Line

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Troubleshooting Using Logs

When a check fails, look at the error field first to understand the type of failure:

  1. Connection errors - For errors like “connection refused” or “timeout”, the service may be down, blocked by a firewall, or experiencing network issues.

  2. Status code mismatches - Compare the status_code with expected_status_code to see if the service is returning unexpected responses.

  3. Response body mismatches - Check if the actual_response_body contains the content you expected to match your regex pattern.

  4. TCP connection failures - For errors like “TCP Dial failed”, verify the host is reachable and the port is open.

If the actual_response_body attribute is empty in the logs, it likely means the HTTP server did not return a response. In this case, the status_code attribute will be 0, indicating that no response was received.