Build using Harbor registry cache

[ghost]

Hello, I am trying to figure out what's this error when using kubectl build in conjunction with Harbor registry and cache -

kubectl build --push --registry-secret regcred --cache-to=type=registry,ref=registry.uk/backend/coordinatorserver:latest --cache-from=type=registry,ref=registry.uk/backend/coordinatorserver:latest -t registry.uk/backend/coordinatorserver:test3 -f Dockerfile ./

[+] Building 4.4s (21/21) FINISHED
 => [internal] load build definition from Dockerfile                                                                                                                                                                                    0.2s
 => => transferring dockerfile: 2.27kB                                                                                                                                                                                                  0.2s
 => [internal] load .dockerignore                                                                                                                                                                                                       0.2s
 => => transferring context: 2B                                                                                                                                                                                                         0.1s
 => [internal] load metadata for mcr.microsoft.com/dotnet/runtime:5.0-alpine                                                                                                                                                            0.1s
 => [internal] load metadata for mcr.microsoft.com/dotnet/sdk:5.0-alpine                                                                                                                                                                0.1s
 => importing cache manifest from registry.infra.trbl.uk/backend/coordinatorserver:latest                                                                                                                                               0.6s
 => [build-env 1/6] FROM mcr.microsoft.com/dotnet/sdk:5.0-alpine@sha256:0e0c3c5f8448815c03ddd889218391611e644acb1af5eedd60a4b7d9eefe0b0f                                                                                                0.0s
 => => resolve mcr.microsoft.com/dotnet/sdk:5.0-alpine@sha256:0e0c3c5f8448815c03ddd889218391611e644acb1af5eedd60a4b7d9eefe0b0f                                                                                                          0.0s
 => [internal] load build context                                                                                                                                                                                                       0.2s
 => => transferring context: 5.39kB                                                                                                                                                                                                     0.2s
 => [stage-1 1/7] FROM mcr.microsoft.com/dotnet/runtime:5.0-alpine@sha256:4bf067dc6f280483e99ce6b669f4efc911d25e7d8b8c5c0bb5db81ff9e5ff353                                                                                              0.0s
 => => resolve mcr.microsoft.com/dotnet/runtime:5.0-alpine@sha256:4bf067dc6f280483e99ce6b669f4efc911d25e7d8b8c5c0bb5db81ff9e5ff353                                                                                                      0.0s
 => CACHED [stage-1 2/7] WORKDIR /app                                                                                                                                                                                                   0.0s
 => CACHED [build-env 2/6] WORKDIR /build                                                                                                                                                                                               0.0s
 => CACHED [build-env 3/6] COPY . .                                                                                                                                                                                                     0.0s
 => CACHED [build-env 4/6] RUN dotnet restore                                                                                                                                                                                           0.0s
 => CACHED [build-env 5/6] RUN dotnet publish   -c Release   -o ./output   -r alpine-x64   -v normal   -f net5.0                                                                                                                        0.0s
 => CACHED [build-env 6/6] RUN chmod u+x,o+x ./output/Application.dll                                                                                                                                                                   0.0s
 => CACHED [stage-1 3/7] COPY --from=build-env /build/harden.sh .                                                                                                                                                                       0.0s
 => CACHED [stage-1 4/7] RUN chmod +x harden.sh &&   sh harden.sh &&   rm harden.sh                                                                                                                                                     0.0s
 => CACHED [stage-1 5/7] COPY --from=build-env --chown=app:app /build/output .                                                                                                                                                          0.0s
 => CACHED [stage-1 6/7] COPY --from=build-env /build/post-install.sh .                                                                                                                                                                 0.0s
 => CACHED [stage-1 7/7] RUN chmod +x post-install.sh &&   sh post-install.sh Application.dll &&   rm post-install.sh                                                                                                                   0.0s
 => exporting to image                                                                                                                                                                                                                  1.0s
 => => exporting layers                                                                                                                                                                                                                 0.0s
 => => exporting manifest sha256:7e827376bc8fd938824824e2a990bcdd4c74a88d5ac20c42d3364d1d95c88f6d                                                                                                                                       0.0s
 => => exporting config sha256:f660f163c5f39e615c9c8d47bd55a3151e751faa2adab58423ebd13b416a6e23                                                                                                                                         0.0s
 => => naming to registry.uk/backend/coordinatorserver:test3                                                                                                                                                                 0.0s
 => => pushing layers                                                                                                                                                                                                                   0.6s
 => => pushing manifest for registry.uk/backend/coordinatorserver:test3@sha256:7e827376bc8fd938824824e2a990bcdd4c74a88d5ac20c42d3364d1d95c88f6d                                                                              0.4s
 => ERROR exporting cache                                                                                                                                                                                                               2.2s
 => => preparing build cache for export                                                                                                                                                                                                 0.1s
 => => writing layer sha256:4486b0038adfc9f468af58726fade658b5fb3616d04c7fc932cd675bdccdf210                                                                                                                                            0.2s
 => => writing layer sha256:4e9f2cdf438714c2c4533e28c6c41a89cc6c1b46cf77e54c488db30ca4f5b6f3                                                                                                                                            0.1s
 => => writing layer sha256:5d9c09a4a9270c9f2194c864123a5f556715aadb3c1ca71e9a2754acd5329bdc                                                                                                                                            0.2s
 => => writing layer sha256:7260e0808c3e35e413a408a9783c08aff3e8fd12bf3ec825bd4f0b4cdb090821                                                                                                                                            0.2s
 => => writing layer sha256:7d087572982f1d7e4ce594421785385f429866724a3add2c3c5285b42563b4c5                                                                                                                                            0.2s
 => => writing layer sha256:abe1e2b3e1060e8501c0df42a22a5a566934c90a56d090d8705623ea88ce9f47                                                                                                                                            0.1s
 => => writing layer sha256:d9ac61d22b4283081bb65ce2d073dba64ded878f10c9dc966222a209a8387f4d                                                                                                                                            0.2s
 => => writing layer sha256:dd725bf97525ad260d2d569ed8c66820ff6dcfbfd07d1f1e6f362346a03e3914                                                                                                                                            0.2s
 => => writing layer sha256:fd4b0c6f124644904fac1cc83236146831a2334d049f8d3074fa690f999bf339                                                                                                                                            0.1s
 => => writing config sha256:c98a35702b8a8f14ffdf0d28cc2a5819901af6ee5c88c281e246f0e127534042                                                                                                                                           0.2s
 => => writing manifest sha256:6509a7e52e216acff5ea42dec662fbb950c0288bb7afe6747047ff4935cfb841                                                                                                                                         0.6s
------
 > exporting cache:
------
Error: failed to solve: rpc error: code = Unknown desc = error writing manifest blob: failed commit on ref "sha256:6509a7e52e216acff5ea42dec662fbb950c0288bb7afe6747047ff4935cfb841": unexpected status: 404 Not Found

I dont understand why it can't export the cache.

[reasonerjt]

@Born2Bake I'm a maintainer of Harbor but not quite sure how buildkit works.

Could you increase the verbose level to clarify. if the error happened when it was communicating with the registry?

[libinglong]

same issue with buildkit, using trace option,but no more informations in log.