The bucket you are attempting to access must be addressed using the specified
This is S3's PermanentRedirect. The bucket exists, but in a different region from the endpoint the client sent the request to. The credentials and the bucket policy are fine. It usually turns up when a client defaults to us-east-1, or a hard-coded endpoint survives after the bucket was recreated in another region.
Quick fix
Read the commands before running them. Anything that restarts a service, deletes data or changes permissions should be tried on a non-production system first.
# Where does the bucket actually live?
aws s3api get-bucket-location --bucket my-bucket
# null means us-east-1
# Point the client at that region
aws s3 ls s3://my-bucket --region eu-west-2
export AWS_REGION=eu-west-2
# boto3
import boto3
s3 = boto3.client('s3', region_name='eu-west-2')
# Check nothing overrides it
env | grep -i -E 'aws_(default_)?region|endpoint'How to diagnose Storage errors
Storage errors are dominated by permissions and locality. S3 access denials can come from an IAM policy, a bucket policy, a Block Public Access setting, an ACL or a KMS key policy: five independent layers, all of which must allow the call. Block storage errors are usually about availability zones: a volume can only attach to an instance in the same AZ.
If the quick fix above does not resolve it, work through these steps. They apply to this whole class of error, not just to this one message, which is usually what saves the time.
- For S3 denials, check all five layers: IAM policy, bucket policy, Block Public Access, object ACL and the KMS key policy if the object is encrypted with a customer-managed key.
- Confirm the region and the exact bucket name. A bucket in another region returns a redirect or a permanent error that reads like a permission problem.
- For signed URLs, check the expiry and that the clock on the signing machine is correct. A skewed clock produces URLs that are already expired.
- For NFS stale file handles, remount rather than retrying; the file the handle referred to no longer exists on the server.
- For volume attachment failures, verify the availability zone matches and that the volume is in the
availablestate, not still attached elsewhere.
Tools worth reaching for
aws s3api get-bucket-policyIAM Policy Simulatormount -v / showmount -edf -h / du -shaws ec2 describe-volumes
Authoritative references
Primary documentation for this error, worth reading before applying any fix in production.
Related Storage errors
- AWS S3: Access Denied on an object encrypted with KMSThe bucket policy allows the read but the caller has no permission on the KMS key, so S3…
- AWS S3: Bucket does not existSpecified S3 bucket doesn't exist or is in different region.
- AWS S3: SignatureDoesNotMatchThe SigV4 signature computed by the client differs from the one S3 computed. Causes: wrong…
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- Azure Blob: Lease conflictBlob is leased by another client. Cannot modify until lease expires or is released.
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Something missing or wrong?
This entry is maintained by hand. If the fix is out of date, incomplete, or you have a better one, email a correction and it will be reviewed.