This page explains how to build and publish the API server which contains the WASM extension.
To run the tests and build the API server you need the following tools:
- System tools
- Git
- Curl
- Make
- C compiler (
cc) - Rsync
apt-get install git curl gcc make rsync
- Docker (https://docs.docker.com/engine/install/)
- Go (https://go.dev/doc/install)
- Rustup (Rust, Cargo, etc.)o (https://www.rust-lang.org/tools/install)
Install wasm32-wasi target:
rustup target add wasm32-wasi
Clone the extended API server code:
git clone -b wasm [email protected]:dvob/kubernetes.git
cd kubernetes/Before you can run the tests for the pkg/wasm package you have to run the prepare script which builds the test modules and downloads some Kubewarden policies (modules).
cd pkg/wasm/testmodules/
./prepare_integration_tests.sh
Then you can run all WASM related tests in the ./pkg/wasm directory:
cd $( git rev-parse --show-toplevel )/pkg/wasm
go test -v ./...
From the root of the repository you can run the build of the whole Kubernetes project:
cd $( git rev-parse --show-toplevel )
make quick-release-images KUBE_BUILD_PLATFORMS=linux/amd64
This publishes the build artifacts to the _output directory. For the API server you can find the following artifacts:
- Binary:
:/_output/release-stage/server/linux-amd64/kubernetes/server/bin/kube-apiserver - Docker image (TAR):
./_output/release-images/amd64/kube-apiserver.tar
Depending on your cluster setup you either need the kube-apiserver binary or the Docker image.
In the case of a kubeadm Kubernetes installation you need the Docker image.
To use the Docker image you have to publish it to a Docker registry. In the following example we publish the image to dvob/kube-apiserver:dev.
docker login
docker load -i ./_output/release-images/amd64/kube-apiserver.tar
docker tag <name of loaded image> dvob/kube-apiserver:dev
docker push dvob/kube-apiserver:dev
To publish the TAR directly you can also use the tool crane:
crane push _output/release-images/amd64/kube-apiserver.tar dvob/kube-apiserver:magic-example
See Setup Kubernetes cluster for instructions on how to setup a Kubernetes cluster and configure a custom API server image.