[feature]: Helm chart for keel

chart/keel/.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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

chart/keel/Chart.yaml

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+apiVersion: v1
+name: keel
+description: Open source, tool for automating Kubernetes deployment updates. Keel is stateless, robust and lightweight.
+version: 0.1.0
+appversion: 0.4.0-rc.2
+keywords:
+- kubernetes deployment
+- helm release
+- continuous deployment
+home: https://keel.sh
+sources:
+- https://github.com/rusenask/keel
+maintainers:
+- name: Rimas Mocevicius
+  email: rmocius@gmail.com
+- name: Karolis Rusenas
+  email: karolis.rusenas@gmail.com
+engine: gotpl

chart/keel/README.md

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+[![CircleCI](https://circleci.com/gh/rusenask/keel/tree/master.svg?style=shield&circle-token=0239846a42cfa188de531058b9a2116a4b8600d8)](https://circleci.com/gh/rusenask/keel/tree/master)
+
+# Keel - automated Kubernetes deployments for the rest of us
+
+* Website [https://keel.sh](https://keel.sh)
+
+Keel is a tool for automating [Kubernetes](https://kubernetes.io/) deployment updates. Keel is stateless, robust and lightweight.
+
+## Install for the first time
+
+Docker image _polling_ is set by default, we also enabling _Helm provider_ support, so Helm releases
+can be upgraded when new Docker image is available:
+
+```console
+helm upgrade --install keel keel --set helmProvider.enabled="true"
+```
+
+
+## Run upgrades e.g. for docker image change
+```console
+helm upgrade keel keel --reuse-values --set image.tag="0.4.0"
+```

chart/keel/templates/NOTES.txt

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+1. The {{ template "name" .}} is getting provisioned in your cluster. After a few minutes, you can run the following to verify.
+
+To verify that {{ template "name" . }} has started, run:
+
+  kubectl --namespace=kube-system get pods -l "app={{ template "name" . }}"

chart/keel/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "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).
+*/}}
+{{- define "fullname" -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

chart/keel/templates/deployment.yaml

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+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: {{ template "name" . }}
+  namespace: kube-system
+  labels:
+    app: {{ template "name" . }}
+    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+  annotations:
+    kubernetes.io/service-account.name: keel
+spec:
+  replicas: {{ .Values.replicaCount }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "name" . }}
+    spec:
+      containers:
+        - name: keel
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command: ["/bin/keel"]
+          env:
+{{- if .Values.polling.enabled }}
+            # Enable polling
+            - name: POLL
+              value: "1"
+{{- else }}
+            # Disable polling
+            - name: POLL
+              value: "0"
+{{- end }}
+{{- if .Values.helmProvider.enabled }}
+            # Enable/disable Helm provider
+            - name: HELM_PROVIDER
+              value: "1"
+{{- end }}
+{{- if .Values.gcr.enabled }}
+            # Enable GCR with pub/sub support
+            - name: PROJECT_ID
+              value: "{{ .Values.gcr.projectId }}"
+            - name: PUBSUB
+              value: "1"
+{{- end }}
+{{- if .Values.webhook.enabled }}
+            # Enable webhook endpoint
+            - name: WEBHOOK_ENDPOINT
+              value: "{{ .Values.webhook.endpoint }}"
+{{- end }}
+{{- if .Values.slack.enabled }}
+            - name: SLACK_TOKEN
+              value: "{{ .Values.slack.token }}"
+            - name: SLACK_CHANNELS
+              value: "{{ .Values.slack.channel }}"
+{{- end }}
+          ports:
+            - containerPort: {{ .Values.service.internalPort }}
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: {{ .Values.service.internalPort }}
+            initialDelaySeconds: 30
+            timeoutSeconds: 10
+          resources:
+{{ toYaml .Values.resources | indent 12 }}

chart/keel/templates/service-account.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ template "name" . }}
+  namespace: kube-system
+  labels:
+    app: {{ template "name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"

chart/keel/templates/service.yaml

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+{{- if .Values.webhook.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "name" . }}
+  namespace: kube-system
+  labels:
+    app: {{ template "name" . }}
+    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.externalPort }}
+      targetPort: {{ .Values.service.internalPort }}
+      protocol: TCP
+      name: {{ .Values.service.name }}
+  selector:
+    app: {{ template "name" . }}
+  sessionAffinity: None
+{{- end }}

chart/keel/values.yaml

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+# Default values for keel.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: karolisr/keel
+  tag: 0.4.0-rc.3
+  pullPolicy: IfNotPresent
+
+# Service gets set only if webhook is enabled
+service:
+  name: ui
+  type: LoadBalancer
+  externalPort: 9300
+  internalPort: 9300
+
+
+# Polling is enabled by default,
+# you can disable it setting value below to false
+polling:
+  enabled: true
+
+# Helm provider support
+helmProvider:
+  enabled: false
+
+# Google Container Registry
+# GCP Project ID
+gcr:
+  enabled: false
+  projectId:  ""
+  pubSub:
+    enabled: false
+
+# Webhook Endpoint
+webhook:
+  enabled: false
+  endpoint: ""
+
+# Slack notification
+slack:
+  enabled: false
+  token: ""
+  channel: ""
+
+# Resources
+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