Add tailscale-subnet-router Chart

charts/tailscale-subnet-router/.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/

charts/tailscale-subnet-router/Chart.yaml

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+apiVersion: v2
+name: tailscale-subnet-router
+description: Deploy a Tailscale subnet router on Kubernetes
+type: application
+version: 0.1.0
+appVersion: "v1.20"
+home: https://github.com/gtaylor/helm-charts/charts/tailscale-subnet-router
+sources:
+  - https://github.com/gtaylor/helm-charts/charts/tailscale-subnet-router

charts/tailscale-subnet-router/README.md

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+# tailscale-subnet-router
+
+Deploy a [Tailscale subnet router](https://tailscale.com/blog/kubecon-21/) on Kubernetes.
+
+## Values
+
+See [values.yaml](values.yaml).

charts/tailscale-subnet-router/templates/_helpers.tpl

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

charts/tailscale-subnet-router/templates/role.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: {{ include "tailscale-subnet-router.fullname" . }}
+  labels:
+    {{- include "tailscale-subnet-router.labels" . | nindent 4 }}
+rules:
+  - apiGroups: [""] # "" indicates the core API group
+    resources: ["secrets"]
+    # Create can not be restricted to a resource name.
+    verbs: ["create"]
+  - apiGroups: [""]
+    resourceNames: [ {{ .Values.tailscale.state.secretName }} ]
+    resources: ["secrets"]
+    verbs: ["get", "update"]

charts/tailscale-subnet-router/templates/rolebinding.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: {{ include "tailscale-subnet-router.fullname" . }}
+  labels:
+    {{- include "tailscale-subnet-router.labels" . | nindent 4 }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "tailscale-subnet-router.serviceAccountName" . }}
+roleRef:
+  kind: Role
+  name: {{ include "tailscale-subnet-router.fullname" . }}
+  apiGroup: rbac.authorization.k8s.io

charts/tailscale-subnet-router/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "tailscale-subnet-router.serviceAccountName" . }}
+  labels:
+    {{- include "tailscale-subnet-router.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

charts/tailscale-subnet-router/templates/statefulset.yaml

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+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: {{ include "tailscale-subnet-router.fullname" . }}
+  labels:
+    {{- include "tailscale-subnet-router.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicas }}
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      {{- include "tailscale-subnet-router.selectorLabels" . | nindent 6 }}
+  serviceName: {{ include "tailscale-subnet-router.name" . }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "tailscale-subnet-router.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "tailscale-subnet-router.fullname" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: {{ .Values.image.repository }}:{{ default .Chart.AppVersion .Values.image.tag }}
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: KUBE_SECRET
+              value: {{ .Values.tailscale.state.secretName }}
+            - name: USERSPACE
+              value: "true"
+            - name: AUTH_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.tailscale.auth.secretName }}
+                  key: {{ .Values.tailscale.auth.secretKey }}
+            - name: ROUTES
+              value: "{{ .Values.tailscale.routes.serviceCIDR}},{{ .Values.tailscale.routes.podCIDR}}"
+          {{- with .Values.resources }}
+          resources: {{ toYaml . | nindent 16 }}
+          {{- end }}
+          {{- if .Values.volumeMounts }}
+          volumeMounts:
+              {{- toYaml .Values.volumeMounts | nindent 12}}
+          {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector: {{ toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity: {{ toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations: {{ toYaml . | nindent 8 }}
+      {{- end }}
+      {{- if .Values.volumes }}
+      volumes:
+         {{- toYaml .Values.volumes | nindent 8}}
+      {{- end }}

charts/tailscale-subnet-router/values.yaml

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+replicas: 1
+
+image:
+  repository: docker.aegn.dev:5443/tailscale/tailscale-subnet-proxy
+  pullPolicy: Always
+  tag: latest
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+tailscale:
+  auth:
+    secretName: tailscale-subnet-router-secrets
+    secretKey: AUTH_KEY
+  state:
+    secretName: tailscale-subnet-router-state
+  routes:
+    serviceCIDR: "10.96.0.0/12"
+    podCIDR: "10.244.0.0/16"
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+volumes: []
+
+volumeMounts: []
+
+# -- Additional annotations for the pods
+podAnnotations: {}
+
+podSecurityContext: {}
+  # fsGroup: 2000
+
+securityContext:
+  runAsUser: 1000
+  runAsGroup: 1000
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+
+## Resources to allocate to the pods
+##
+resources: {}
+#  limits:
+#    cpu: 50m
+#    memory: 64Mi
+#  requests:
+#    cpu: 50m
+#    memory: 64Mi
+
+## Node labels for pod assignment
+## ref: https://kubernetes.io/docs/user-guide/node-selection/
+#
+nodeSelector: {}
+
+## Tolerations for pod assignment
+## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+##
+tolerations: []
+
+## Affinity for pod assignment
+## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+##
+affinity: {}