Error adding S3 compatible Storage configuration

Hello, I’m newby with UrBackup and I’m try to Appliance CE version, when I try to add S3 Compatible Storage, I get this error:

Error verifying cloud storage settings:

2021-06-27 17:11:13: Reading config from /dev/shm/clouddrive_2/settings
2021-06-27 17:11:13: AES key length=32
2021-06-27 17:11:13: All depenencies available. Starting up…
2021-06-27 17:11:13: Total available RAM: 7.77029 GB
2021-06-27 17:11:13: Database with identifier “40” couldn’t be opened
2021-06-27 17:11:13: Retrieving object cd_magic_file
2021-06-27 17:11:13: WARNING: AWS-Client: Retry Strategy will use the default max attempts.
2021-06-27 17:11:14: WARNING: AWS-Client: Encountered AWSError ‘NoSuchKey’:
2021-06-27 17:11:14: ERROR: AWS-Client: HTTP response code: 404
Exception name: NoSuchKey
Error message: with address :
5 response headers:
accept-ranges : bytes
content-length : 245
content-type : application/xml
date : Sun, 27 Jun 2021 22:11:14 GMT
x-amz-request-id : tx000000000000000006e60-0060d8f782-9af1e5b1-us-east-1-iad1
2021-06-27 17:11:14: WARNING: AWS-Client: If the signature check failed. This could be because of a time skew. Attempting to adjust the signer.
2021-06-27 17:11:14: Key cd_magic_file not found
2021-06-27 17:11:14: Listing first object in bucket…
2021-06-27 17:11:14: WARNING: AWS-Client: Encountered AWSError ‘NoSuchKey’:
2021-06-27 17:11:14: ERROR: AWS-Client: HTTP response code: 404

Please can you help me?

Thanks in advance.

Could you tell what kind of S3 storage it is (to reproduce the issue…) ?

A guess would be that you didn’t create the bucket, so it can’t list bucket contents? Or it returns 404 when listing empty buckets…

Hello Uroni, thanks for your time. I’am use DreamObjects producto by Dreamhost Cloud Object Storage - DreamHost .

I try with an S3 plugin call it ExpandDrive and works fine.

I attach the connection properties.

Thanks in advance.

Try if it works if you create a random file in the bucket before using it (as work-around).

What did you fill in as endpoint URL ?

If yes try as endpoint

Hello Uroni, I upload files through object explorer from Dreamhost directly, it works,but when I try with S3 Explorer software I can’t connect to DreamObjects S3 Compatible. I decided open an Amazon AWS account and try instrucctions from Infscape. When I configure the storage from urbackup appliance I get this message:

I restart but nothing happens.

Thanks in advance.

Hello Uroni, I reseted my VM and install again the appliance, I try with Amazon S3 and it works, from Dreamhost they recommend not use complete endpoint, only , now I can connect to bucket to make operations over objects from S3 Explorer.
Do you can see this image and clear me some doubts?
Screenshot 2021-06-29 at 10.13.01

  1. If I have one client with 700GB backup size, I need all space available on Urbackup server?
  2. If I clear local storage cache, Can I recovery backup from S3?
  3. How works Cloud Storage, the data are on S3 or only hash or what?
  4. Into S3 I see many folders like hexadecimal format, that it’s backup folders?

Screenshot 2021-06-29 at 10.22.00

I read some pages of Admin Manual and other docs but I can’t understand completely.

Thanks in advance.

You have configured 1TB so it’s enough?


The data is on S3.

No it’s the backup storage. The “folders” are there because S3 requires them for improved performance.