P2P not working with harbor

[fengwang-db]

What happened in your environment?

This is more like a question than a bug.
We deploy harbor using azure blob store as the backend storage. During image pull, harbor returns a signed URL to Azure blob store. When we turn on the P2PConfig to route the overlaybd blob download requests to a local server, we found the overlaybd requests are Azure URLs, e.g.

/registryfs/registryfs.cpp:132|GET:p2p_url: 127.0.0.1:8081/https://abced.blob.core.windows.net/harbor//docker/registry/v2/blobs/sha256/fc/fc830920cdbfd4bbb850c2c11a7932c2371f3916ed7709ecf168729d13326d01/data?se=2024-04-26T06%3A18%3A35Z&sig=zAFnql%2BX%2FJcDREL2tuiA%2FRuShaRQz5zSr8UDbf205W0%3D&sp=r&sr=b&sv=2016-05-31

What did you expect to happen?

Ideally we would like the request to be harbor, something like:
/v2/main/hello/test/blobs/sha256:ba81c3880903ca64f19e7dd0a6f7e52e90b68c2e8e0e3e63d143b1c6d4d60221?ns=harbor.test.com
So we can use something like Kraken and reduce the harbor load. It also seems inefficient for overlaybd to fetch a signed-url from harbor for each request.

Is this an expected behavior? How difficult is it to change the behavior to the above?

How can we reproduce it?

enable P2P in overlaybd.json:

      "p2pConfig": {
          "enable": true,
          "address": "127.0.0.1:8081"
      },

What is the version of your Overlaybd?

0.6.17

What is your OS environment?

Ubuntu 20.04

Are you willing to submit PRs to fix it?

• Yes, I am willing to fix it.

[BigVan]

Did you mean that you want overlaybd send http(s) request through http proxy during the entire lazy-loading progress

[fengwang-db]

@BigVan That would also work. Is it something supported?

[fengwang-db]

Another question, what's the difference between registryfs and registryfs_v2? Is there a preference which one should be used?

[fengwang-db]

https://github.com/containerd/overlaybd/blob/v0.6.17/src/overlaybd/registryfs/registryfs.cpp#L125-L126
Basically we would prefer not to set the url to the re-direct url.

[fengwang-db]

Is something like #327 acceptable? Or any better ideas?

[BigVan]

So we can use something like Kraken and reduce the harbor load. It also seems inefficient for overlaybd to fetch a signed-url from harbor for each request.

So Kraken didn't work for the blob-signed URL?

[fengwang-db]

@BigVan correct. kraken doesn't work with pre-signed url. it expects the request to be registry API compliant.

[BigVan]

I think maybe setting an HTTP proxy is better than 'ignore redirect URL'?

It there any possible?