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cloud-provider-gcp

Publishing cloud-controller-manager image

Create an Artifact Registry repository for the CCM image.

Then use make publish to build and push the cloud-controller-manager Docker image. For example, the following command will build and push the image to us-central1-docker.pkg.dev/my-project/my-repo/cloud-controller-manager:v0. Change the location, project, and repo names to match yours.

LOCATION=us-central1 PROJECT=my-project REPO=my-repo
gcloud auth configure-docker ${LOCATION}-docker.pkg.dev
IMAGE_REPO=${LOCATION}-docker.pkg.dev/${PROJECT}/${REPO} IMAGE_TAG=v0 make publish

If IMAGE_REPO is not set, the script will exit with an error. If IMAGE_TAG is not set, it defaults to a unique value combining the current git commit SHA and the build date.

Docker Commands

Note: To push images to Google Artifact Registry, you must first authenticate Docker by running the following command: gcloud auth configure-docker ${LOCATION}-docker.pkg.dev

  • make publish: Builds the cloud-controller-manager Docker image (including multi-architecture support) and pushes it to the container registry specified by the IMAGE_REPO environment variable.

  • make bundle: Builds the cloud-controller-manager Docker image and saves it as a .tar file locally, along with creating a .docker_tag file. This is useful for offline distribution or loading.

  • make clean-builder: Removes the docker buildx builder used for multi-platform Docker builds. This command is useful to reset the builder environment if the builder encounters an error or becomes corrupted. It can also be used to free up resources when the builder is no longer needed.

Cross-compiling

Selecting the target platform is done with the --platforms option with bazel. This command builds release tarballs for Windows:

bazel build --platforms=@io_bazel_rules_go//go/toolchain:windows_amd64 //release:release-tars

This command explicitly targets Linux as the target platform:

bazel build --platforms=@io_bazel_rules_go//go/toolchain:linux_amd64 //release:release-tars

Dependency management

Dependencies are managed using Go modules (go mod subcommands).

Note that builds are done with Bazel and not the Go tool. Don't follow public Go module docs, instead use instructions in this readme.

Working within GOPATH

If you work within GOPATH, go mod will error out unless you do one of:

  • move repo outside of GOPATH (it should "just work")
  • set env var GO111MODULE=on

Add a new dependency

go get github.com/new/dependency && make update-vendor

Update an existing dependency

go get -u github.com/existing/dependency && make update-vendor

Update all dependencies

go get -u && make update-vendor

Note that this most likely won't work due to cross-dependency issues or repos not implementing modules correctly.

Bazel

Bazel is required to build and release cloud-provider-gcp.

To install:

go get github.com/bazelbuild/bazelisk
alias bazel=bazelisk

To re-generate BUILD files:

tools/update_bazel.sh