Revert "remove all"

This reverts commit 88a2094.

Dockerfile

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+# Build the manager binary
+FROM docker.m.daocloud.io/golang:1.18.1 as builder
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY api/ api/
+COPY commands/ commands/
+COPY controllers/ controllers/
+COPY errors/ errors/
+COPY operations/ operations/
+
+# Build
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER nonroot:nonroot
+
+ENTRYPOINT ["/manager"]

LICENSE

@@ -0,0 +1,201 @@
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Makefile

@@ -0,0 +1,73 @@
+
+# Image URL to use all building/pushing image targets
+IMG ?= daocloud.io/daocloud/kubeadm-operator:v0.0.2
+# Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
+CRD_OPTIONS ?= "crd"
+
+# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
+ifeq (,$(shell go env GOBIN))
+GOBIN=$(shell go env GOPATH)/bin
+else
+GOBIN=$(shell go env GOBIN)
+endif
+
+all: manager
+
+# Run tests
+test: generate fmt vet manifests
+	go test ./... -coverprofile cover.out
+
+# Build manager binary
+manager: generate fmt vet
+	go build -o bin/manager main.go
+
+# Run against the configured Kubernetes cluster in ~/.kube/config
+run: generate fmt vet manifests
+	go run ./main.go
+
+# Install CRDs into a cluster
+install: manifests
+	kustomize build config/crd | kubectl apply -f -
+
+# Deploy controller in the configured Kubernetes cluster in ~/.kube/config
+deploy: manifests
+	cd config/manager && kustomize edit set image controller=${IMG}
+	kustomize build config/default | kubectl apply -f -
+
+undeploy: manifests
+	cd config/manager && kustomize edit set image controller=${IMG}
+	kustomize build config/default | kubectl delete -f -
+
+# Generate manifests e.g. CRD, RBAC etc.
+manifests: controller-gen
+	$(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+
+# Run go fmt against code
+fmt:
+	go fmt ./...
+
+# Run go vet against code
+vet:
+	go vet ./...
+
+# Generate code
+generate: controller-gen
+	$(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths="./..."
+
+# Build the docker image
+docker-build: test
+	docker build . -t ${IMG}
+
+# Push the docker image
+docker-push:
+	docker push ${IMG}
+
+# find or download controller-gen
+# download controller-gen if necessary
+controller-gen:
+ifeq (, $(shell which controller-gen))
+	go install sigs.k8s.io/controller-tools/cmd/[email protected]
+CONTROLLER_GEN=$(GOBIN)/controller-gen
+else
+CONTROLLER_GEN=$(shell which controller-gen)
+endif

PROJECT

@@ -0,0 +1,13 @@
+version: "2"
+domain: kubeadm.x-k8s.io
+repo: k8s.io/kubeadm/operator
+resources:
+- group: operator
+  version: v1alpha1
+  kind: Operation
+- group: operator
+  version: v1alpha1
+  kind: RuntimeTaskGroup
+- group: operator
+  version: v1alpha1
+  kind: RuntimeTask

README.md

@@ -0,0 +1,70 @@
+# Kubeadm operator
+
+The kubeadm-operator is an experimental project, still WIP.
+Do not use in production.
+
+See [KEP](https://git.k8s.io/enhancements/keps/sig-cluster-lifecycle/kubeadm/2505-Kubeadm-operator) for more details.
+
+## Quick Start
+
+Configure kubeconfig for your cluster.
+
+```
+git clone [email protected]:pacoxu/kubeadm-operator.git
+cd kubeadm-operator
+make install
+make deploy
+```
+
+## Demo 
+
+After installation, a deploy named `operator-controller-manager` is running in namespace `operator-system`.
+```
+[root@daocloud ~]# kubectl get pod -n operator-system -o wide
+NAME                                          READY   STATUS    RESTARTS   AGE   IP               NODE       NOMINATED NODE   READINESS GATES
+operator-controller-manager-64c448f5b-p682x   2/2     Running   0          77m   172.32.230.197   daocloud   <none>           <none>
+```
+
+If you create a dry-run upgrade operation, there will be a runtimetaqskgroup with 
+
+```
+[root@daocloud ~]# cat up.yaml
+apiVersion: operator.kubeadm.x-k8s.io/v1alpha1
+kind: Operation
+metadata:
+  name: upgrade-1
+spec:
+  executionMode: DryRun
+  upgrade:
+    kubernetesVersion: v1.23.4
+    
+[root@daocloud ~]# kubectl get runtimetaskgroup -w
+NAME                        PHASE     NODES   SUCCEEDED   FAILED
+upgrade-1-01-upgrade-cp-1   Running   1
+upgrade-1-01-upgrade-cp-1   Succeeded   1       1
+upgrade-1-02-upgrade-cp-n
+upgrade-1-02-upgrade-cp-n   Running
+upgrade-1-02-upgrade-cp-n   Succeeded
+upgrade-1-02-upgrade-w
+upgrade-1-02-upgrade-w      Running
+upgrade-1-02-upgrade-w      Succeeded
+upgrade-1-02-upgrade-w      Succeeded    
+```
+
+After the operation is done, the operation and task group are all `Succeeded`.
+
+```
+[root@daocloud ~]# kubectl get operations
+NAME        PHASE       GROUPS   SUCCEEDED   FAILED
+upgrade-1   Succeeded   3        3
+[root@daocloud ~]# kubectl get runtimetaskgroup
+NAME                        PHASE       NODES   SUCCEEDED   FAILED
+upgrade-1-01-upgrade-cp-1   Succeeded   1       1
+upgrade-1-02-upgrade-cp-n   Succeeded
+upgrade-1-02-upgrade-w      Succeeded
+[root@daocloud ~]# kubectl get runtimetask
+NAME                                 PHASE       STARTTIME   COMMAND   COMPLETIONTIME
+upgrade-1-01-upgrade-cp-1-daocloud   Succeeded   75m         3/3       75m
+
+
+```