I have a question about longhorn backup, the backup configuration in our system is : S3://clustername-longhorn/us-east1. My understanding is that it is using an test local S3 (Minio) storage. But I can't figure out where the S3 storage is. Can anyone help pointing me to the right direction where I can find the configuration for S3 Server is. I searched many places in the internet, but can't find it. Your help would be appreciated. Martin

Using the Longhorn UI - Setting -> General scroll to Backup Target and Backup Target Credential Secret. • Backup Target will be your S3://clustername-longhorn/us-east1. • Backup Target Credential Secret will be the name of a secret in the

longhorn-system

namespace in the kubernetes cluster. In that secret you'll find the

AWS_ENDPOINTS

which will point to the URL of your MinIO server, and it's likely that the secret will say that the

VIRTUAL_HOSTED_STYLE

is

false

meaning the bucket name from the s3:// URL needs to be appended the path and not prepended to the hostname. You'll also find the

AWS_ACCESS_KEY_ID

and

AWS_SECRET_ACCESS_KEY

to access the bucket, and a set of HTTP proxy settings required to access the end-point.

Thanks Mark, it works.