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Troubleshoot Elastic Load Balancing
The following tables list the troubleshooting resources that you'll find useful as you work with Elastic Load Balancing.
Troubleshooting Elastic Load Balancing: Error Messages
| Topic | Resource |
|---|---|
| HTTP error codes | What HTTP error codes can my load balancer return? |
| HTTP 400 | HTTP 400: BAD_REQUEST |
| HTTP 405 | HTTP 405: METHOD_NOT_ALLOWED |
| HTTP 408 | HTTP 408: Request Timeout |
| HTTP 502 | HTTP 502: Bad Gateway |
| HTTP 503 | HTTP 503: Service Unavailable |
| HTTP response codes | Identifying the source of HTTP errors |
Troubleshooting Elastic Load Balancing: Health Check
| Topic | Resource |
|---|---|
| Registered instances failing health check | Troubleshooting Elastic Load Balancing: Health Check Configuration |
| Health check URL does not match the configuration | Health check URL and frequency different from configuration in API and console |
| Unhealthy instance sending 302 response code to load balancer | Instances treated as unhealthy when sending a 302 redirect response |
Troubleshooting Elastic Load Balancing : Registering Instances
| Topic | Resource |
|---|---|
| Delay in making a registered instance available for service | Taking too long to register back-end instances. |
| Unable to register an instance launched from a paid AMI | Unable to register instance launched from a paid AMI. |
| Registered instance is out of service | OutofService: A Transient Error Occurred |
