To troubleshoot the UDCA in Apigee hybrid, look at the log files. UDCA logs are
written to stdout/stderr and can be viewed using the kubectl logs command.
On the Kubernetes administration machine, execute the following command:
kubectl logs pod_name apigee-udca -n namespace
The following table lists common error messages that might appear in the UDCA log files and their meanings. Log messages will include a timestamp and often a stacktrace or other information to help you diagnose and fix the issue.
| Entry Type | Log message | Meaning |
|---|---|---|
| Error | Failed to create directory for dataset
dataset_name |
The directory configured for the given dataset did not exist
and the UDCA failed to create it. It could be a permission issue in
the setup.
This issue prevents UDCA from starting. |
| Error | Shutdown action was interrupted. It is possible that some
data will be lost |
As part of a shutdown, UDCA tries to upload all files on disk.
This message indicates that the shutdown took longer than expected and some data might not be uploaded and hence lost. |
| Error | Scheduled DatasetHandler for dataset
dataset_name encountered an exception. |
An attempt to perform an action on the given dataset encountered an unexpected exception while polling the configured directory or while uploading the files. |
| Error | Upload failed for file filename. Max Retries
exceeded! Moving dir to failed folder. |
The UDCA failed to upload the given file and moved the file to the dataset's /failed subdirectory. |
| Error | Re-queuing files from failed directory encountered an exception. |
The UDCA requeues files from the /failed directory after a
successful upload. This ensures that the UDCA retry to upload files
after network/upstream issues are resolved.
This message indicates that UDCA experienced an error when trying to requeue the file. |
| Error | Shutting down datasetHandler encountered an exception. |
The UDCA experienced an exception when trying to shut down. |
| Error | Failed to move file from directory_name to
directory_name. |
The UDCA encountered an exception while moving a file between sub-directories for internal lifecycle management. |
| Error | Failed to delete file filename. |
The UDCA encountered an exception while deleting a file after a successful upload. |
| Warning | Received 429 - Too many Requests from upstream service.
Skipping remaining files in this iteration and will retry
again |
The UDCA received an error that it had exceeded its quota from an upstream service. As a result, the UDCA skipped the remaining files in this iteration and will retry in the next interval. |
| Warning | File upload failed for filename.
error_message |
The UDCA failed to upload the given file due to the returned
error.
The UDCA will attempt to upload the file 3 times before moving it to the dataset's /failed subdirectory. |
| Warning | Request request_URI timed out. Aborting request |
The specified asynchronous request to upload the file timed out and was cancelled. |
| Warning | Request request_URI failed. Exception
exception |
The specified asynchronous request failed with an exception. |
| Warning | Metrics Computation Failed:
error_message |
The periodic computation of the UDCA's file system metrics encountered an exception. |