feat: helm chart

deploy/k8s-image-swapper/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

deploy/k8s-image-swapper/Chart.yaml

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+apiVersion: v2
+name: k8s-image-swapper
+description: Mirror images into your own registry and swap image references automatically.
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+appVersion: 1.0.0

deploy/k8s-image-swapper/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ . }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "k8s-image-swapper.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "k8s-image-swapper.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "k8s-image-swapper.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "k8s-image-swapper.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

deploy/k8s-image-swapper/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "k8s-image-swapper.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 "k8s-image-swapper.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 "k8s-image-swapper.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "k8s-image-swapper.labels" -}}
+helm.sh/chart: {{ include "k8s-image-swapper.chart" . }}
+{{ include "k8s-image-swapper.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "k8s-image-swapper.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "k8s-image-swapper.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "k8s-image-swapper.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "k8s-image-swapper.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

deploy/k8s-image-swapper/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "k8s-image-swapper.fullname" . }}
+  labels:
+    {{- include "k8s-image-swapper.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "k8s-image-swapper.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "k8s-image-swapper.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "k8s-image-swapper.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

deploy/k8s-image-swapper/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "k8s-image-swapper.fullname" . }}
+  labels:
+    {{- include "k8s-image-swapper.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "k8s-image-swapper.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}

deploy/k8s-image-swapper/templates/job-patch/clusterrole.yaml

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+{{- if and .Values.patch.enabled .Values.rbac.create }}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "k8s-image-swapper.serviceAccountName" . }}
+  annotations:
+    "helm.sh/hook": pre-install,pre-upgrade,post-install,post-upgrade
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+  labels:
+    {{- include "k8s-image-swapper.labels" . | nindent 4 }}
+rules:
+  - apiGroups:
+      - admissionregistration.k8s.io
+    resources:
+      - validatingwebhookconfigurations
+      - mutatingwebhookconfigurations
+    verbs:
+      - get
+      - update
+{{- if .Values.podSecurityPolicy.enabled }}
+{{- $kubeTargetVersion := default .Capabilities.KubeVersion.GitVersion .Values.kubeTargetVersionOverride }}
+{{- if semverCompare "> 1.15.0-0" $kubeTargetVersion }}
+  - apiGroups: ['policy']
+{{- else }}
+  - apiGroups: ['extensions']
+{{- end }}
+    resources: ['podsecuritypolicies']
+    verbs:     ['use']
+    resourceNames:
+    - {{ template "k8s-image-swapper.fullname" . }}
+{{- end }}
+{{- end }}

deploy/k8s-image-swapper/templates/job-patch/clusterrolebinding.yaml

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+{{- if and .Values.patch.enabled .Values.rbac.create  }}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ include "k8s-image-swapper.serviceAccountName" . }}
+  annotations:
+    "helm.sh/hook": pre-install,pre-upgrade,post-install,post-upgrade
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+  labels:
+    {{- include "k8s-image-swapper.labels" . | nindent 4 }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+name: {{ include "k8s-image-swapper.serviceAccountName" . }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "k8s-image-swapper.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end }}

deploy/k8s-image-swapper/templates/job-patch/job-createSecret.yaml

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+{{- if .Values.patch.enabled }}
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "k8s-image-swapper.serviceAccountName" . }}-create
+  annotations:
+    "helm.sh/hook": pre-install,pre-upgrade
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+  labels:
+    {{- include "k8s-image-swapper.labels" . | nindent 4 }}
+spec:
+  {{- if .Capabilities.APIVersions.Has "batch/v1alpha1" }}
+  # Alpha feature since k8s 1.12
+  ttlSecondsAfterFinished: 0
+  {{- end }}
+  template:
+    metadata:
+      name: {{ include "k8s-image-swapper.serviceAccountName" . }}-create
+{{- with .Values.patch.podAnnotations }}
+      annotations:
+{{ toYaml .  | indent 8 }}
+{{- end }}
+      labels:
+        {{- include "k8s-image-swapper.labels" . | nindent 8 }}
+    spec:
+      {{- if .Values.patch.priorityClassName }}
+      priorityClassName: {{ .Values.patch.priorityClassName }}
+      {{- end }}
+      containers:
+        - name: create
+          {{- if .Values.patch.image.sha }}
+          image: {{ .Values.patch.image.repository }}:{{ .Values.patch.image.tag }}@sha256:{{ .Values.patch.image.sha }}
+          {{- else }}
+          image: {{ .Values.patch.image.repository }}:{{ .Values.patch.image.tag }}
+          {{- end }}
+          imagePullPolicy: {{ .Values.patch.image.pullPolicy }}
+          args:
+            - create
+            - --host={{ template "k8s-image-swapper.fullname" . }},{{ template "k8s-image-swapper.fullname" . }}.{{ .Release.Namespace }}.svc
+            - --namespace={{ .Release.Namespace }}
+            - --secret-name={{ template "k8s-image-swapper.fullname" . }}
+          resources:
+{{ toYaml .Values.patch.resources | indent 12 }}
+      restartPolicy: OnFailure
+      serviceAccountName: {{ template "k8s-image-swapper.fullname" . }}
+      {{- with .Values.patch.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- with .Values.patch.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- with .Values.patch.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      securityContext:
+        runAsGroup: 2000
+        runAsNonRoot: true
+        runAsUser: 2000
+{{- end }}