setup proxy cache to Google Artifact registry is failing

[vinay1203]

I have installed harbor and setup ingress and added a proxy registry with Google GCR provider but with Artifact registry as the Endpoint URL(https://us-docker.pkg.dev/<GCP_PROJECT>).

But when i am trying to pull from the harbor endpoint, it is giving the below error.
Error response from daemon: unknown: repository proxy-cache/prod-docker-us/hello-world not found

Docker login works and i am using the command in the format as below:
docker pull <HARBOR_ENDPOINT>/<HARBOR_PROJECT_NAME>/<GAR_REPO_NAME>/hello-world:latest

And i was able to pull the image from GAR successfully using Google Artifact Registry endpoint.

After checking the harbor-core pod logs, i could see the below logs:
2024-07-01T19:43:19Z [ERROR] [/server/middleware/repoproxy/proxy.go:121]: failed to proxy manifest, fallback to local, request uri: /v2/proxy-cache/hello-world/manifests/latest, error: http status code: 405, body:

[stonezdj]

The google container registry (GCR) is different with the google artifact registry (GAR), you can not use the GCR provider for a GAR endpoint.

[vinay1203]

So, GAR proxy is not currently supported by Harbor?

I used GCR provider with GAR endpoint with reference to the comment in the below PR. #16973 (comment)

I also tried GAR endpoint with docker registry provider as well. It is also failing with the same error.

I am using harbor core image version of v2.10.2

[Kenny1G]

So, GAR proxy is not currently supported by Harbor?

I used GCR provider with GAR endpoint with reference to the comment in the below PR. #16973 (comment)

I also tried GAR endpoint with docker registry provider as well. It is also failing with the same error.

I am using harbor core image version of v2.10.2

@vinay1203 You want to configure the replication endpoint in this way: #16973 (comment)

[vinay1203]

Hello @Kenny1G

Thank you for your response. I did follow the same PR but while creating a registry and giving Endpoint URL as "https://us-docker.pkg.dev" it is not letting me create the registry stating "the registry is unhealthy".

Upon checking harbor core logs, i can see the below errors:
2024-07-16T17:58:52Z [ERROR] [/pkg/reg/adapter/native/adapter.go:126]: failed to ping registry https://us-docker.pkg.dev: http status code: 401, body: {"errors":[{"code":"UNAUTHORIZED","message":"authentication failed"}]}

But if i add my project at the end of the url like "https://us-docker.pkg.dev/<GCP_PROJECT>" then i am able to create the registry. That is the reason why i used Endpoint URL in that particular format ignoring the comment in the PR.