Add Helm chart (#14090)

* add Helm chart

known issues/future work:

- SSO is unsupported

- S3/Minio/GCS is unsupported

- Swift is unsupported

- WEB_DOMAIN is unsupported

- Tor is unsupported

* helm: clarify how LOCAL_DOMAIN is set

* helm: add chart description

* helm: make DB_POOL and Sidekiq concurrency configurable

* helm: only enforce pod affinity when using ReadWriteOnce

* helm: clarify compatibility

* helm: clean up application variables

* helm: add job to create initial admin

23 files changed, 1173 insertions, 0 deletions

diff --git a/chart/.helmignore b/chart/.helmignore
new file mode 100644
index 000000000..0e8a0eb36
--- /dev/null
+++ b/chart/.helmignore
@@ -0,0 +1,23 @@
+# 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/
diff --git a/chart/Chart.yaml b/chart/Chart.yaml
new file mode 100644
index 000000000..f028227e3
--- /dev/null
+++ b/chart/Chart.yaml
@@ -0,0 +1,35 @@
+apiVersion: v2
+name: mastodon
+description: Mastodon is a free, open-source social network server based on ActivityPub.
+
+# 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: 3.1.4
+
+dependencies:
+  - name: elasticsearch
+    version: "12.x.x"
+    repository: https://charts.bitnami.com/bitnami
+    condition: elasticsearch.enabled
+  - name: postgresql
+    version: "8.x.x"
+    repository: https://charts.bitnami.com/bitnami
+  - name: redis
+    version: "10.x.x"
+    repository: https://charts.bitnami.com/bitnami
diff --git a/chart/readme.md b/chart/readme.md
new file mode 100644
index 000000000..804e98094
--- /dev/null
+++ b/chart/readme.md
@@ -0,0 +1,44 @@
+# Introduction
+
+This is a [Helm](https://helm.sh/) chart for installing Mastodon into a
+Kubernetes cluster.  The basic usage is:
+
+```
+cp values.yaml.template values.yaml
+edit values.yaml # configure required settings
+helm dep update
+helm upgrade --install my-mastodon ./
+```
+
+This chart has been tested on Helm 3.0.1 and above.
+
+# Configuration
+
+The variables that _must_ be configured are:
+
+- `ingress.hostname`; even if you aren’t using an Ingress, this value is used to
+  set `LOCAL_DOMAIN`.
+
+- password and keys in the `secrets`, `postgresql`, and `redis` groups; if
+  left blank, some of those values will be autogenerated, but will not persist
+  across upgrades.
+
+- SMTP settings for your mailer in the `smtp` group.
+
+# Missing features
+
+Currently this chart does _not_ support:
+
+- Hidden services
+- S3/Minio/GCS
+- Single Sign-On
+- Swift
+- configurations using `WEB_DOMAIN`
+
+# Upgrading
+
+Because database migrations are managed as a Job separate from the Rails and
+Sidekiq deployments, it’s possible they will occur in the wrong order.  After
+upgrading Mastodon versions, it may sometimes be necessary to manually delete
+the Rails and Sidekiq pods so that they are recreated against the latest
+migration.
diff --git a/chart/templates/NOTES.txt b/chart/templates/NOTES.txt
new file mode 100644
index 000000000..36cced67a
--- /dev/null
+++ b/chart/templates/NOTES.txt
@@ -0,0 +1,21 @@
+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 "mastodon.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "mastodon.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "mastodon.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 "mastodon.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:80
+{{- end }}
diff --git a/chart/templates/_helpers.tpl b/chart/templates/_helpers.tpl
new file mode 100644
index 000000000..5814a3120
--- /dev/null
+++ b/chart/templates/_helpers.tpl
@@ -0,0 +1,79 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "mastodon.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 "mastodon.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 "mastodon.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "mastodon.labels" -}}
+helm.sh/chart: {{ include "mastodon.chart" . }}
+{{ include "mastodon.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "mastodon.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "mastodon.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "mastodon.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "mastodon.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create a default fully qualified name for dependent services.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "mastodon.elasticsearch.fullname" -}}
+{{- printf "%s-%s" .Release.Name "elasticsearch" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "mastodon.redis.fullname" -}}
+{{- printf "%s-%s" .Release.Name "redis" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "mastodon.postgresql.fullname" -}}
+{{- printf "%s-%s" .Release.Name "postgresql" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
diff --git a/chart/templates/configmap-env.yaml b/chart/templates/configmap-env.yaml
new file mode 100644
index 000000000..27351e97e
--- /dev/null
+++ b/chart/templates/configmap-env.yaml
@@ -0,0 +1,65 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "mastodon.fullname" . }}-env
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+data:
+  DB_HOST: {{ template "mastodon.postgresql.fullname" . }}
+  DB_NAME: {{ .Values.postgresql.postgresqlDatabase }}
+  DB_POOL: {{ .Values.application.sidekiq.concurrency | quote }}
+  DB_PORT: "5432"
+  DB_USER: {{ .Values.postgresql.postgresqlUsername }}
+  DEFAULT_LOCALE: {{ .Values.locale }}
+  {{- if .Values.elasticsearch.enabled }}
+  ES_ENABLED: "true"
+  ES_HOST: {{ template "mastodon.elasticsearch.fullname" . }}-master
+  ES_PORT: "9200"
+  {{- end }}
+  LOCAL_DOMAIN: {{ .Values.ingress.hostname }}
+  # https://devcenter.heroku.com/articles/tuning-glibc-memory-behavior
+  MALLOC_ARENA_MAX: "2"
+  NODE_ENV: "production"
+  RAILS_ENV: "production"
+  REDIS_HOST: {{ template "mastodon.redis.fullname" . }}-master
+  REDIS_PORT: "6379"
+  {{- if .Values.smtp.auth_method }}
+  SMTP_AUTH_METHOD: {{ .Values.smtp.auth_method }}
+  {{- end }}
+  {{- if .Values.smtp.ca_file }}
+  SMTP_CA_FILE: {{ .Values.smtp.ca_file }}
+  {{- end }}
+  {{- if .Values.smtp.delivery_method }}
+  SMTP_DELIVERY_METHOD: {{ .Values.smtp.delivery_method }}
+  {{- end }}
+  {{- if .Values.smtp.domain }}
+  SMTP_DOMAIN: {{ .Values.smtp.domain }}
+  {{- end }}
+  {{- if .Values.smtp.enable_starttls_auto }}
+  SMTP_ENABLE_STARTTLS_AUTO: {{ .Values.smtp.enable_starttls_auto | quote }}
+  {{- end }}
+  {{- if .Values.smtp.from_address }}
+  SMTP_FROM_ADDRESS: {{ .Values.smtp.from_address }}
+  {{- end }}
+  {{- if .Values.smtp.login }}
+  SMTP_LOGIN: {{ .Values.smtp.login }}
+  {{- end }}
+  {{- if .Values.smtp.openssl_verify_mode }}
+  SMTP_OPENSSL_VERIFY_MODE: {{ .Values.smtp.openssl_verify_mode }}
+  {{- end }}
+  {{- if .Values.smtp.password }}
+  SMTP_PASSWORD: {{ .Values.smtp.password }}
+  {{- end }}
+  {{- if .Values.smtp.port }}
+  SMTP_PORT: {{ .Values.smtp.port | quote }}
+  {{- end }}
+  {{- if .Values.smtp.reply_to }}
+  SMTP_REPLY_TO: {{ .Values.smtp.reply_to }}
+  {{- end }}
+  {{- if .Values.smtp.server }}
+  SMTP_SERVER: {{ .Values.smtp.server }}
+  {{- end }}
+  {{- if .Values.smtp.tls }}
+  SMTP_TLS: {{ .Values.smtp.tls | quote }}
+  {{- end }}
+  STREAMING_CLUSTER_NUM: {{ .Values.application.streaming.workers | quote }}
diff --git a/chart/templates/deployment-sidekiq.yaml b/chart/templates/deployment-sidekiq.yaml
new file mode 100644
index 000000000..5457183a3
--- /dev/null
+++ b/chart/templates/deployment-sidekiq.yaml
@@ -0,0 +1,97 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "mastodon.fullname" . }}-sidekiq
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+{{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+{{- end }}
+  selector:
+    matchLabels:
+      {{- include "mastodon.selectorLabels" . | nindent 6 }}
+      component: rails
+  template:
+    metadata:
+    {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+        # roll the pods to pick up any db migrations
+        rollme: {{ randAlphaNum 5 | quote }}
+    {{- end }}
+      labels:
+        {{- include "mastodon.selectorLabels" . | nindent 8 }}
+        component: rails
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "mastodon.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      # ensure we run on the same node as the other rails components; only
+      # required when using PVCs that are ReadWriteOnce
+      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+                - key: component
+                  operator: In
+                  values:
+                    - rails
+            topologyKey: kubernetes.io/hostname
+      {{- end }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bundle
+            - exec
+            - sidekiq
+            - -c
+            - {{ .Values.application.sidekiq.concurrency | quote }}
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
diff --git a/chart/templates/deployment-streaming.yaml b/chart/templates/deployment-streaming.yaml
new file mode 100644
index 000000000..5d642d72c
--- /dev/null
+++ b/chart/templates/deployment-streaming.yaml
@@ -0,0 +1,80 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "mastodon.fullname" . }}-streaming
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+{{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+{{- end }}
+  selector:
+    matchLabels:
+      {{- include "mastodon.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+    {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+      labels:
+        {{- include "mastodon.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "mastodon.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 }}
+          command:
+            - node
+            - ./streaming
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.streaming.port | quote }}
+          ports:
+            - name: streaming
+              containerPort: {{ .Values.application.streaming.port }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /api/v1/streaming/health
+              port: streaming
+          readinessProbe:
+            httpGet:
+              path: /api/v1/streaming/health
+              port: streaming
+          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 }}
diff --git a/chart/templates/deployment-web.yaml b/chart/templates/deployment-web.yaml
new file mode 100644
index 000000000..5010e567a
--- /dev/null
+++ b/chart/templates/deployment-web.yaml
@@ -0,0 +1,101 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "mastodon.fullname" . }}-web
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+{{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+{{- end }}
+  selector:
+    matchLabels:
+      {{- include "mastodon.selectorLabels" . | nindent 6 }}
+      component: rails
+  template:
+    metadata:
+    {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+        # roll the pods to pick up any db migrations
+        rollme: {{ randAlphaNum 5 | quote }}
+    {{- end }}
+      labels:
+        {{- include "mastodon.selectorLabels" . | nindent 8 }}
+        component: rails
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "mastodon.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bundle
+            - exec
+            - puma
+            - -C
+            - config/puma.rb
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.web.port | quote }}
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
+          ports:
+            - name: http
+              containerPort: {{ .Values.application.web.port }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /health
+              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 }}
diff --git a/chart/templates/hpa.yaml b/chart/templates/hpa.yaml
new file mode 100644
index 000000000..3f9aa8a93
--- /dev/null
+++ b/chart/templates/hpa.yaml
@@ -0,0 +1,28 @@
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "mastodon.fullname" . }}
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "mastodon.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 }}
diff --git a/chart/templates/ingress.yaml b/chart/templates/ingress.yaml
new file mode 100644
index 000000000..947bf5b70
--- /dev/null
+++ b/chart/templates/ingress.yaml
@@ -0,0 +1,41 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "mastodon.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    - host: {{ .Values.ingress.hostname | quote }}
+      http:
+        paths:
+          - path: '/'
+            backend:
+              serviceName: {{ $fullName }}-web
+              servicePort: {{ $svcPort }}
+          - path: '/api/v1/streaming'
+            backend:
+              serviceName: {{ $fullName }}-streaming
+              servicePort: {{ .Values.application.streaming.port }}
+{{- end }}
diff --git a/chart/templates/job-assets-precompile.yaml b/chart/templates/job-assets-precompile.yaml
new file mode 100644
index 000000000..5472e06d6
--- /dev/null
+++ b/chart/templates/job-assets-precompile.yaml
@@ -0,0 +1,69 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "mastodon.fullname" . }}-assets-precompile
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": post-install
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    "helm.sh/hook-weight": "-2"
+spec:
+  template:
+    metadata:
+      name: {{ include "mastodon.fullname" . }}-assets-precompile
+    spec:
+      restartPolicy: Never
+      # ensure we run on the same node as the other rails components; only
+      # required when using PVCs that are ReadWriteOnce
+      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+                - key: component
+                  operator: In
+                  values:
+                    - rails
+            topologyKey: kubernetes.io/hostname
+      {{- end }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ include "mastodon.fullname" . }}-assets-precompile
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bash
+            - -c
+            - |
+                bundle exec rake assets:precompile && yarn cache clean
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.web.port | quote }}
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
diff --git a/chart/templates/job-chewy-upgrade.yaml b/chart/templates/job-chewy-upgrade.yaml
new file mode 100644
index 000000000..789fcff83
--- /dev/null
+++ b/chart/templates/job-chewy-upgrade.yaml
@@ -0,0 +1,71 @@
+{{- if .Values.elasticsearch.enabled }}
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "mastodon.fullname" . }}-chewy-upgrade
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": post-install
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    "helm.sh/hook-weight": "-1"
+spec:
+  template:
+    metadata:
+      name: {{ include "mastodon.fullname" . }}-chewy-upgrade
+    spec:
+      restartPolicy: Never
+      # ensure we run on the same node as the other rails components; only
+      # required when using PVCs that are ReadWriteOnce
+      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+                - key: component
+                  operator: In
+                  values:
+                    - rails
+            topologyKey: kubernetes.io/hostname
+      {{- end }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ include "mastodon.fullname" . }}-chewy-setup
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bundle
+            - exec
+            - rake
+            - chewy:upgrade
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.web.port | quote }}
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
+{{- end }}
diff --git a/chart/templates/job-create-admin.yaml b/chart/templates/job-create-admin.yaml
new file mode 100644
index 000000000..3c5bdd6eb
--- /dev/null
+++ b/chart/templates/job-create-admin.yaml
@@ -0,0 +1,76 @@
+{{- if .Values.createAdmin.enabled }}
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "mastodon.fullname" . }}-create-admin
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": post-install
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    "helm.sh/hook-weight": "-1"
+spec:
+  template:
+    metadata:
+      name: {{ include "mastodon.fullname" . }}-create-admin
+    spec:
+      restartPolicy: Never
+      # ensure we run on the same node as the other rails components; only
+      # required when using PVCs that are ReadWriteOnce
+      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+                - key: component
+                  operator: In
+                  values:
+                    - rails
+            topologyKey: kubernetes.io/hostname
+      {{- end }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ include "mastodon.fullname" . }}-create-admin
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bin/tootctl
+            - accounts
+            - create
+            - {{ .Values.createAdmin.username }}
+            - --email
+            - {{ .Values.createAdmin.email }}
+            - --confirmed
+            - --role
+            - admin
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.web.port | quote }}
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
+{{- end }}
diff --git a/chart/templates/job-db-migrate.yaml b/chart/templates/job-db-migrate.yaml
new file mode 100644
index 000000000..e07832386
--- /dev/null
+++ b/chart/templates/job-db-migrate.yaml
@@ -0,0 +1,69 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "mastodon.fullname" . }}-db-migrate
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": post-install,pre-upgrade
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    "helm.sh/hook-weight": "-2"
+spec:
+  template:
+    metadata:
+      name: {{ include "mastodon.fullname" . }}-db-migrate
+    spec:
+      restartPolicy: Never
+      # ensure we run on the same node as the other rails components; only
+      # required when using PVCs that are ReadWriteOnce
+      {{- if or (eq "ReadWriteOnce" .Values.persistence.assets.accessMode) (eq "ReadWriteOnce" .Values.persistence.system.accessMode) }}
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+                - key: component
+                  operator: In
+                  values:
+                    - rails
+            topologyKey: kubernetes.io/hostname
+      {{- end }}
+      volumes:
+        - name: assets
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-assets
+        - name: system
+          persistentVolumeClaim:
+            claimName: {{ template "mastodon.fullname" . }}-system
+      containers:
+        - name: {{ include "mastodon.fullname" . }}-db-migrate
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - bundle
+            - exec
+            - rake
+            - db:migrate
+          envFrom:
+            - configMapRef:
+                name: {{ include "mastodon.fullname" . }}-env
+            - secretRef:
+                name: {{ template "mastodon.fullname" . }}
+          env:
+            - name: "DB_PASS"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-postgresql
+                  key: postgresql-password
+            - name: "REDIS_PASSWORD"
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Release.Name }}-redis
+                  key: redis-password
+            - name: "PORT"
+              value: {{ .Values.application.web.port | quote }}
+          volumeMounts:
+            - name: assets
+              mountPath: /opt/mastodon/public/assets
+            - name: system
+              mountPath: /opt/mastodon/public/system
diff --git a/chart/templates/pvc-assets.yaml b/chart/templates/pvc-assets.yaml
new file mode 100644
index 000000000..5c5315100
--- /dev/null
+++ b/chart/templates/pvc-assets.yaml
@@ -0,0 +1,13 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ template "mastodon.fullname" . }}-assets
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - {{ .Values.persistence.system.accessMode }}
+  resources:
+    {{- toYaml .Values.persistence.assets.resources | nindent 4}}
+  storageClassName: {{ .Values.persistence.assets.storageClassName }}
diff --git a/chart/templates/pvc-system.yaml b/chart/templates/pvc-system.yaml
new file mode 100644
index 000000000..028551151
--- /dev/null
+++ b/chart/templates/pvc-system.yaml
@@ -0,0 +1,13 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ template "mastodon.fullname" . }}-system
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - {{ .Values.persistence.system.accessMode }}
+  resources:
+    {{- toYaml .Values.persistence.system.resources | nindent 4}}
+  storageClassName: {{ .Values.persistence.system.storageClassName }}
diff --git a/chart/templates/secrets.yaml b/chart/templates/secrets.yaml
new file mode 100644
index 000000000..74f4b1516
--- /dev/null
+++ b/chart/templates/secrets.yaml
@@ -0,0 +1,28 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ template "mastodon.fullname" . }}
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+type: Opaque
+data:
+  {{- if not (empty .Values.secrets.secret_key_base) }}
+  SECRET_KEY_BASE: "{{ .Values.secrets.secret_key_base | b64enc }}"
+  {{- else }}
+  SECRET_KEY_BASE: {{ required "secret_key_base is required" .Values.secrets.secret_key_base }}
+  {{- end }}
+  {{- if not (empty .Values.secrets.otp_secret) }}
+  OTP_SECRET: "{{ .Values.secrets.otp_secret | b64enc }}"
+  {{- else }}
+  OTP_SECRET: {{ required "otp_secret is required" .Values.secrets.otp_secret }}
+  {{- end }}
+  {{- if not (empty .Values.secrets.vapid.private_key) }}
+  VAPID_PRIVATE_KEY: "{{ .Values.secrets.vapid.private_key | b64enc }}"
+  {{- else }}
+  VAPID_PRIVATE_KEY: {{ required "vapid.private_key is required" .Values.secrets.vapid.private_key }}
+  {{- end }}
+  {{- if not (empty .Values.secrets.vapid.public_key) }}
+  VAPID_PUBLIC_KEY: "{{ .Values.secrets.vapid.public_key | b64enc }}"
+  {{- else }}
+  VAPID_PUBLIC_KEY: {{ required "vapid.public_key is required" .Values.secrets.vapid.public_key }}
+  {{- end }}
diff --git a/chart/templates/service-streaming.yaml b/chart/templates/service-streaming.yaml
new file mode 100644
index 000000000..ff5dc13ea
--- /dev/null
+++ b/chart/templates/service-streaming.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "mastodon.fullname" . }}-streaming
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.application.streaming.port }}
+      targetPort: streaming
+      protocol: TCP
+      name: streaming
+  selector:
+    {{- include "mastodon.selectorLabels" . | nindent 4 }}
diff --git a/chart/templates/service-web.yaml b/chart/templates/service-web.yaml
new file mode 100644
index 000000000..e0df35b25
--- /dev/null
+++ b/chart/templates/service-web.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "mastodon.fullname" . }}-web
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "mastodon.selectorLabels" . | nindent 4 }}
diff --git a/chart/templates/serviceaccount.yaml b/chart/templates/serviceaccount.yaml
new file mode 100644
index 000000000..b2f3d87c5
--- /dev/null
+++ b/chart/templates/serviceaccount.yaml
@@ -0,0 +1,12 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "mastodon.serviceAccountName" . }}
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}
diff --git a/chart/templates/tests/test-connection.yaml b/chart/templates/tests/test-connection.yaml
new file mode 100644
index 000000000..09d981691
--- /dev/null
+++ b/chart/templates/tests/test-connection.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "mastodon.fullname" . }}-test-connection"
+  labels:
+    {{- include "mastodon.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test-success
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "mastodon.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never
diff --git a/chart/values.yaml.template b/chart/values.yaml.template
new file mode 100644
index 000000000..2df6748a1
--- /dev/null
+++ b/chart/values.yaml.template
@@ -0,0 +1,163 @@
+replicaCount: 1
+
+image:
+  repository: tootsuite/mastodon
+  pullPolicy: Always
+  # https://hub.docker.com/r/tootsuite/mastodon/tags
+  tag: v3.1.4
+  # alternatively, use `latest` for the latest release or `edge` for the image
+  # built from the most recent commit
+  #
+  # tag: latest
+
+ingress:
+  enabled: false
+  annotations:
+    kubernetes.io/ingress.class: nginx
+    kubernetes.io/tls-acme: "true"
+    # cert-manager.io/cluster-issuer: "letsencrypt"
+  # this value is used for LOCAL_DOMAIN
+  hostname: mastodon.local
+  tls:
+    - secretName: mastodon-tls
+      hosts:
+        - mastodon.local
+
+# create an initial administrator user; the password is autogenerated and will
+# have to be reset
+createAdmin:
+  enabled: false
+  username: not_gargron
+  email: not@example.com
+
+# available locales: https://github.com/tootsuite/mastodon/blob/master/config/application.rb#L43
+locale: en
+
+application:
+  web:
+    port: 3000
+  streaming:
+    port: 4000
+    # this should be set manually since os.cpus() returns the number of CPUs on
+    # the node running the pod, which is unrelated to the resources allocated to
+    # the pod by k8s
+    workers: 1
+  sidekiq:
+    concurrency: 25
+
+# these must be set manually; autogenerated keys are rotated on each upgrade
+secrets:
+  secret_key_base: ""
+  otp_secret: ""
+  vapid:
+    private_key: ""
+    public_key: ""
+
+smtp:
+  auth_method: plain
+  ca_file:
+  delivery_method: smtp
+  domain:
+  enable_starttls_auto: true
+  from_address: notifications@example.com
+  login:
+  openssl_verify_mode: peer
+  password:
+  port: 587
+  reply_to:
+  server: smtp.mailgun.org
+  tls: false
+
+# https://github.com/bitnami/charts/tree/master/bitnami/elasticsearch#parameters
+elasticsearch:
+  # `false` will disable full-text search
+  #
+  # if you enable ES after the initial install, you will need to manually run
+  # RAILS_ENV=production bundle exec rake chewy:sync
+  # (https://docs.joinmastodon.org/admin/optional/elasticsearch/)
+  enabled: true
+  # may be removed once https://github.com/tootsuite/mastodon/pull/13828 is part
+  # of a tagged release
+  image:
+    tag: 6
+
+# https://github.com/bitnami/charts/tree/master/bitnami/postgresql#parameters
+postgresql:
+  postgresqlDatabase: mastodon_production
+  # you must set a password; the password generated by the postgresql chart will
+  # be rotated on each upgrade:
+  # https://github.com/bitnami/charts/tree/master/bitnami/postgresql#upgrade
+  postgresqlPassword: ""
+  postgresqlUsername: postgres
+
+# https://github.com/bitnami/charts/tree/master/bitnami/redis#parameters
+redis:
+  # you must set a password; the password generated by the redis chart will be
+  # rotated on each upgrade:
+  password: ""
+
+persistence:
+  assets:
+    # ReadWriteOnce is more widely supported than ReadWriteMany, but limits
+    # scalability, since it requires the Rails and Sidekiq pods to run on the
+    # same node.
+    accessMode: ReadWriteOnce
+    resources:
+      requests:
+        storage: 100Gi
+  system:
+    accessMode: ReadWriteOnce
+    resources:
+      requests:
+        storage: 10Gi
+
+service:
+  type: ClusterIP
+  port: 80
+
+# https://github.com/tootsuite/mastodon/blob/master/Dockerfile#L88
+#
+# if you manually change the UID/GID environment variables, ensure these values
+# match:
+podSecurityContext:
+  runAsUser: 991
+  runAsGroup: 991
+  fsGroup: 991
+
+securityContext: {}
+
+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: ""
+
+podAnnotations: {}
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+autoscaling:
+  enabled: false
+  minReplicas: 1
+  maxReplicas: 100
+  targetCPUUtilizationPercentage: 80
+  # targetMemoryUtilizationPercentage: 80
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}