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BUILD.md

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Build

If you would like to build and run the project locally you can follow these steps:

Clone the repo:

git clone https://github.com/aws/aws-node-termination-handler.git

Build the latest version of the docker image:

make docker-build

Multi-Target

By default a linux/amd64 image will be built. To build for a different target the build-arg GOARCH can be changed.

$ docker build --build-arg=GOARCH=amd64 -t ${USER}/aws-node-termination-handler-amd64:v1.0.0 .
$ docker build --build-arg=GOARCH=arm64 -t ${USER}/aws-node-termination-handler-arm64:v1.0.0 .

To push a multi-arch image, the helper tool manifest-tool can be used.

$ cat << EOF > manifest.yaml
image: ${USER}/aws-node-termination-handler:v1.0.0
manifests:
  -
    image: ${USER}/aws-node-termination-handler-amd64:v1.0.0
    platform:
      architecture: amd64
      os: linux
  -
    image: ${USER}/aws-node-termination-handler-arm64:v1.0.0
    platform:
      architecture: arm64
      os: linux
EOF
$ manifest-tool push from-spec manifest.yaml

Go Module Proxy

By default, Go 1.13+ uses the proxy.golang.org proxy for go module downloads. This can be changed to a different go module proxy or revert back to pre-go 1.13 default which was "direct". GOPROXY=direct will pull from the VCS provider directly instead of going through a proxy at all.

## No Proxy
docker build --build-arg=GOPROXY=direct -t ${USER}/aws-node-termination-handler:v1.0.0 .

## My Corp Proxy
docker build --build-arg=GOPROXY=go-proxy.mycorp.com -t ${USER}/aws-node-termination-handler:v1.0.0 .

Kubernetes Object Files

We use Kustomize to create a master Kubernetes yaml file. You can apply the base (default confg), use the provided overlays, or write your own custom overlays.

NOTE: Kustomize was built into kubectl starting with kubernetes 1.14. If you are using an older version of kubernetes or kubectl, you can download the kustomize binary for your platform on their github releases page: https://github.com/kubernetes-sigs/kustomize/releases

## Apply base kustomize directly kubernetes
kubectl apply -k $REPO_ROOT/config/base 

## OR apply an overlay specifying a node selector to run the daemonset only on spot instances
## This will use the base and add a node selector into the daemonset K8s object definition
kubectl apply -k $REPO_ROOT/config/overlays/spot-node-selector

Read more about Kustomize and Overlays: https://kustomize.io