Add kwok operator

Makefile

@@ -39,7 +39,7 @@ KUBE_RELEASES ?= $(shell echo $(SUPPORTED_KUBE_RELEASES) | cut -d ' ' -f 1-$(NUM
 # The latest kube release
 LATEST_KUBE_RELEASE ?= $(shell echo $(SUPPORTED_KUBE_RELEASES) | cut -d ' ' -f 1)
 
-BINARY ?= kwok kwokctl
+BINARY ?= kwok kwokctl kwok-operator
 
 IMAGE_PREFIX ?=
 
@@ -64,9 +64,11 @@ PRE_RELEASE ?=
 
 ifeq ($(STAGING_IMAGE_PREFIX),)
 KWOK_IMAGE ?= kwok
+KWOK_OPERATOR_IMAGE ?= operator
 CLUSTER_IMAGE ?= cluster
 else
 KWOK_IMAGE ?= $(STAGING_IMAGE_PREFIX)/kwok
+KWOK_OPERATOR_IMAGE ?= $(STAGING_IMAGE_PREFIX)/kwok-operator
 CLUSTER_IMAGE ?= $(STAGING_IMAGE_PREFIX)/cluster
 endif
 
@@ -76,7 +78,7 @@ IMAGE_PLATFORMS ?= linux/amd64 linux/arm64
 
 BINARY_PLATFORMS ?= linux/amd64 linux/arm64 darwin/amd64 darwin/arm64 windows/amd64 windows/arm64
 
-MANIFESTS ?= kwok kwokctl stage/fast metrics/usage
+MANIFESTS ?= kwok kwokctl operator stage/fast metrics/usage
 
 BUILDER ?= docker
 DOCKER_CLI_EXPERIMENTAL ?= enabled
@@ -187,6 +189,31 @@ cross-image:
 		--builder=${BUILDER} \
 		--push=${PUSH}
 
+## operator-image: Build kwok operator image
+.PHONY: operator-image
+operator-image:
+	@./images/kwok-operator/build.sh \
+		$(addprefix --extra-tag=, $(EXTRA_TAGS)) \
+		--image=${KWOK_OPERATOR_IMAGE} \
+		--version=${VERSION} \
+		--staging-prefix=${STAGING_PREFIX} \
+		--dry-run=${DRY_RUN} \
+		--builder=${BUILDER} \
+		--push=${PUSH}
+
+## cross-operator-image: Build kwok operator images for all supported platforms
+.PHONY: cross-operator-image
+cross-operator-image:
+	@./images/kwok-operator/build.sh \
+		$(addprefix --platform=, $(IMAGE_PLATFORMS))  \
+		$(addprefix --extra-tag=, $(EXTRA_TAGS)) \
+		--image=${KWOK_OPERATOR_IMAGE} \
+		--version=${VERSION} \
+		--staging-prefix=${STAGING_PREFIX} \
+		--dry-run=${DRY_RUN} \
+		--builder=${BUILDER} \
+		--push=${PUSH}
+
 ## cluster-image: Build cluster image
 .PHONY: cluster-image
 cluster-image:

charts/operator/.helmignore

@@ -0,0 +1 @@
+.helmignore

charts/operator/Chart.yaml

@@ -0,0 +1,17 @@
+apiVersion: v2
+description: KWOK Operator
+type: application
+home: https://kwok.sigs.k8s.io
+icon: https://github.com/kubernetes-sigs/kwok/raw/main/logo/kwok.png
+keywords:
+- kubernetes
+- kwok
+- operator
+sources:
+- https://github.com/kubernetes-sigs/kwok
+name: operator
+maintainers:
+- name: wzshiming
+  email: [email protected]
+appVersion: v0.6.0
+version: 0.0.1

charts/operator/README.md

@@ -0,0 +1,49 @@
+# KWOK (Kubernetes WithOut Kubelet)
+
+[KWOK](https://kwok.sigs.k8s.io/) - Simulates thousands of Nodes and Clusters.
+
+## Installing the Chart
+
+Before you can install the chart you will need to add the `kwok` repo to [Helm](https://helm.sh/).
+
+```shell
+helm repo add kwok https://kwok.sigs.k8s.io/charts/
+```
+
+After you've installed the repo you can install the chart.
+
+```shell
+helm upgrade --namespace kube-system --install kwok kwok/kwok
+```
+
+Set up default stage policy (required)
+> NOTE: This configures the pod/node emulation behavior, if not it will do nothing.
+
+```shell
+helm upgrade --install kwok kwok/stage-fast
+```
+
+Set up default metrics usage policy (optional)
+
+```shell
+helm upgrade --install kwok kwok/metrics-usage
+```
+
+## Configuration
+
+The following table lists the configurable parameters of the kwok chart and their default values.
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| affinity | object | `{}` |  |
+| fullnameOverride | string | `"kwok-controller"` | Override the `fullname` of the chart. |
+| image.pullPolicy | string | `"IfNotPresent"` | Image pull policy. |
+| image.repository | string | `"registry.k8s.io/kwok/kwok"` | Image repository. |
+| image.tag | string | `""` | Overrides the image tag whose default is {{ .Chart.AppVersion }}. |
+| imagePullSecrets | list | `[]` | Image pull secrets. |
+| nameOverride | string | `""` | Override the `name` of the chart. |
+| nodeSelector | object | `{}` |  |
+| podSecurityContext | object | `{}` |  |
+| replicas | int | `1` | The replica count for Deployment. |
+| resources | object | `{}` |  |
+| securityContext | object | `{}` |  |

charts/operator/README.md.gotmpl

@@ -0,0 +1,9 @@
+# {{ template "chart.description" . }}
+
+{{ template "extra.usage" . }}
+
+## Configuration
+
+The following table lists the configurable parameters of the kwok chart and their default values.
+
+{{ template "chart.valuesTable" . }}

charts/operator/crds

@@ -0,0 +1 @@
+../../kustomize/operator/crd/bases

charts/operator/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "kwok.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "kwok.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "kwok.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "kwok.labels" -}}
+helm.sh/chart: {{ include "kwok.chart" . }}
+{{ include "kwok.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "kwok.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "kwok.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "kwok.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "kwok.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/operator/templates/deployment.yaml

@@ -0,0 +1,46 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "kwok.fullname" . }}
+  labels:
+    {{- include "kwok.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicas }}
+  selector:
+    matchLabels:
+      {{- include "kwok.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "kwok.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "kwok.fullname" . }}
+      {{- with .Values.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      restartPolicy: Always
+      containers:
+      - name: {{ .Chart.Name }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        securityContext:
+          {{- toYaml .Values.securityContext | nindent 10 }}
+        resources:
+          {{- toYaml .Values.resources | nindent 10 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/operator/templates/role.yaml

@@ -0,0 +1,33 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: kwok-operator
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  verbs:
+  - create
+  - delete
+  - get
+- apiGroups:
+  - kwok.x-k8s.io
+  resources:
+  - controllers
+  verbs:
+  - create
+  - delete
+  - get
+  - list
+  - patch
+  - update
+  - watch
+- apiGroups:
+  - kwok.x-k8s.io
+  resources:
+  - controllers/status
+  verbs:
+  - patch
+  - update

charts/operator/templates/role_binding.yaml

@@ -0,0 +1,12 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: kwok-operator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kwok-operator
+subjects:
+- kind: ServiceAccount
+  name: kwok-operator
+  namespace: {{ .Release.Namespace }}

charts/operator/templates/service_account.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kwok-operator
+  namespace: {{ .Release.Namespace }}

charts/operator/values.yaml

@@ -0,0 +1,26 @@
+image:
+  # -- Image pull policy.
+  pullPolicy: IfNotPresent
+  # -- Image repository.
+  repository: registry.k8s.io/kwok/operator
+  # -- Overrides the image tag whose default is {{ .Chart.AppVersion }}.
+  tag: ""
+
+# -- Image pull secrets.
+imagePullSecrets: []
+
+# -- Override the `name` of the chart.
+nameOverride: ""
+
+# -- Override the `fullname` of the chart.
+fullnameOverride: "kwok-operator"
+
+podSecurityContext: {}
+securityContext: {}
+
+nodeSelector: {}
+resources: {}
+affinity: {}
+
+# -- The replica count for Deployment.
+replicas: 1

cmd/kwok-operator/main.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package main is the entry point for the kwok binary.
+package main
+
+import (
+	"os"
+
+	"github.com/spf13/pflag"
+
+	"sigs.k8s.io/kwok/pkg/config"
+	"sigs.k8s.io/kwok/pkg/log"
+	"sigs.k8s.io/kwok/pkg/operator/cmd"
+	"sigs.k8s.io/kwok/pkg/utils/signals"
+)
+
+func main() {
+	flagset := pflag.NewFlagSet("global", pflag.ContinueOnError)
+	flagset.ParseErrorsWhitelist.UnknownFlags = true
+	flagset.Usage = func() {}
+
+	ctx := signals.SetupSignalContext()
+	ctx, logger := log.InitFlags(ctx, flagset)
+
+	ctx, err := config.InitFlags(ctx, flagset)
+	if err != nil {
+		_, _ = os.Stderr.Write([]byte(flagset.FlagUsages()))
+		logger.Error("Init config flags", err)
+		os.Exit(1)
+	}
+
+	command := cmd.NewCommand(ctx)
+	command.PersistentFlags().AddFlagSet(flagset)
+	err = command.ExecuteContext(ctx)
+	if err != nil {
+		logger.Error("Execute exit", err)
+		os.Exit(1)
+	}
+}

hack/releases-helm-charts.sh

@@ -85,5 +85,6 @@ chart_dir="./charts"
 index_dir="${ROOT_DIR}/site/static/charts"
 
 package_and_index "${index_dir}" "${chart_dir}/kwok" "kwok-chart" || :
+package_and_index "${index_dir}" "${chart_dir}/operator" "kwok-operator-chart" || :
 package_and_index "${index_dir}" "${chart_dir}/stage-fast" "kwok-stage-fast-chart" || :
 package_and_index "${index_dir}" "${chart_dir}/metrics-usage" "kwok-metrics-usage-chart" || :