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POC of implementation of the cluster-api for the Airship OpenInfrastructure project

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cluster-api-provider-airship

POC of cluster-api implementation for Airship

Quick notes taken during the creation of the cluster-api-provider-airship scaffolding creation

Prerequesist

Install dep

curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
sudo mv $HOME/bin/dep /usr/bin

Install kustomize

wget https://github.com/kubernetes-sigs/kustomize/releases/download/v1.0.11/kustomize_1.0.11_linux_amd64
mv kustomize_1.0.11_linux_amd64 kustomize
chmod +x kustomize 
sudo mv kustomize /usr/bin/

Install kubebuilder (contains a copy of kubectl, etcd and kubeapi-server)

wget https://github.com/kubernetes-sigs/kubebuilder/releases/download/v1.0.8/kubebuilder_1.0.8_linux_amd64.tar.gz
tar xvf kubebuilder_1.0.8_linux_amd64.tar.gz 
mv kubebuilder_1.0.8_linux_amd64 kubebuilder
sudo mv kubebuilder /usr/local

Ensure the local kubelete and kubernetes cluster is stopped

sudo systemctl stop kubelet
docker stop $(docker ps -qa)
export PATH=$PATH:/usr/local/kubebuilder/bin

Creation of scaffolding

Generation steps

cd cluster-api-provider-airship/
kubebuilder init --domain airshipit.org --license apache2 --owner "The Kubernetes Authors"
git add .
git commit -m "Generate scaffolding."
git push
kubebuilder create api --group airship --version v1alpha1 --kind AirshipClusterProviderSpec
kubebuilder create api --group airship --version v1alpha1 --kind AirshipClusterProviderStatus
kubebuilder create api --group airship --version v1alpha1 --kind AirshipMachineProviderStatus
kubebuilder create api --group airship --version v1alpha1 --kind AirshipMachineProviderSpec
vi cmd/manager/main.go 
mkdir -p pkg/cloud/airship/actuators/cluster/
mkdir -p pkg/cloud/airship/actuators/machine/
vi pkg/cloud/airship/actuators/cluster/actuator.go
vi pkg/cloud/airship/actuators/machine/actuator.go
vi pkg/controller/add_cluster_controller.go
vi pkg/controller/add_machine_controller.go
vi Makefile 
dep ensure
export IMG=keleustes/cluster-api-provider-airship
dep ensure
make
make docker-build IMG=${IMG}
git add .
git commit -m "Add CRDs and build image"
git push

Cleanup steps

If you used brute force, git add . the repository becomes bulky. In order to keep the scrict minimum

git rm -fr vendor/
git rm -fr bin/
git commit
git push origin --force --all
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch vendor" HEAD
git push origin --force --all
git clone https://github.com/keleustes/cluster-api-provider-airship.git
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch bin" HEAD
git push origin --force --all
git clone https://github.com/keleustes/cluster-api-provider-airship.git

Rebuild images

List of commands used to rebuild and publish the images.

export IMG=keleustes/cluster-api-provider-airship
dep ensure
make
make docker-build IMG=${IMG}
make docker-push IMG=${IMG}

Deployment and tests

List of commands to deploy and test.

Ensure that /usr/local/kubebuilder is no longer in your path if you are using the same machine

kubectl get nodes
kubectl apply -f provider-components.yaml
kubectl get all --all-namespaces
kubectl logs pod/cluster-api-provider-airship-controller-manager-0 -n cluster-api-provider-airship-system manager

TBD

Testing clusterctl

make clusterctl
./bin/clusterctl create cluster --cluster cmd/clusterctl/examples/airship/cluster.yaml --machines cmd/clusterctl/examples/airship/machines.yaml --addon-components cmd/clusterctl/examples/airship/addons.yaml --provider-components cmd/clusterctl/examples/airship/provider-components.yaml --provider airship

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