ECS: Troubleshooting S3 Read, Write or Delete issues

Attempting to Write, Read or Delete an S3 object, the application is displaying an HTTP status Error code.
Error codes can also be visible from the ECS user interface portal under Requests. See the Screenshot below, we can see that we are having 0.00% of System Failures and 0.01% of user failures under Requests.

Performance

From the user interface, we can see more information regarding what Error Codes were captured, by clicking on the Requests or from the left menu select: Monitor > Transactions.
More detailed page should be displayed as in the screenshot below.




System Failures: Caused due to a problem occurring on the ECS side, there are alot of problems that can cause System Failures to appear some examples would be:

• Timeout while writing big S3 objects to the ECS (as per the S3 Best Practices, it is recommended to use MPU Multipart upload instead of uploading large S3 object). See KB: ECS: Writing large files failing with 500 errors for S3 Protocol.
• ECS capacity has reached the Threshold of 90%.
• One or more services are restarting.

User Failures: Caused due to a problem in addressing the S3 Bucket Object, some of these issues are:

• Wrong S3 key or SecretKey supplied.
• Wrong addressing style used in the S3 query that does not address the BaseUrl added to the ECS VDC. See KB (ECS: Missing BaseURL causing 400/404 errors during Read Write operations).
• S3 Object is not found or was deleted.
• Metadata Search query ran to a nonenabled Metadata Search Bucket and so on. See KB (ECS: Bucket Management - Overview and troubleshooting).

See the below KB articles that can help fixing the issue with the User Failures:
S3 Error Codes and their possible causes: ECS: S3 error codes with possible causes
How to setup the S3curl and test the S3 operations using S3curl for ECS 3.x: ECS: How to perform basic s3 operations on ECS 3.x using the s3curl.pl script.
How to use s3curl to perform (MPU) Multipart Upload: ECS: How to use s3curl to perform (MPU) Multipart upload.

If the issue still persists, open an SR with ECS Support team referencing the KB article number: 538960