Add the nix setup guidelines (#244)

Signed-off-by: Vladimir Pouzanov <farcaller@gmail.com>

README.md

@@ -1 +1,20 @@
 # ArgoCD Example Apps
+
+This repository contains example applications for demoing ArgoCD functionality. Feel free
+to register this repository to your ArgoCD instance, or fork this repo and push your own commits
+to explore ArgoCD and GitOps!
+
+| Application | Description |
+|-------------|-------------|
+| [guestbook](guestbook/) | A hello word guestbook app as plain YAML |
+| [helm-guestbook](helm-guestbook/) | The guestbook app as a Helm chart |
+| [jsonnet-guestbook](jsonnet-guestbook/) | The guestbook app as a raw jsonnet |
+| [jsonnet-guestbook-tla](jsonnet-guestbook-tla/) | The guestbook app as a raw jsonnet with support for top level arguments |
+| [kustomize-guestbook](kustomize-guestbook/) | The guestbook app as a Kustomize 2 app |
+| [pre-post-sync](pre-post-sync/) | Demonstrates Argo CD PreSync and PostSync hooks |
+| [sync-waves](sync-waves/) | Demonstrates Argo CD sync waves with hooks |
+| [helm-dependency](helm-dependency/) | Demonstrates how to customize an OTS (off-the-shelf) helm chart from an upstream repo |
+| [sock-shop](sock-shop/) | A microservices demo app (https://microservices-demo.github.io) |
+| [plugins](plugins/) | Apps which demonstrate config management plugins usage |
+| [blue-green](blue-green/) | Demonstrates how to implement blue-green deployment using [Argo Rollouts](https://github.com/argoproj/argo-rollouts)
+| [apps](apps/) | An app composed of other apps |

apps/Chart.yaml

@@ -0,0 +1,23 @@
+apiVersion: v2
+name: applications
+description: Applications
+
+# 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"

apps/templates/helm-guestbook.yaml

@@ -0,0 +1,16 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: helm-guestbook
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  destination:
+    namespace: helm-guestbook
+    server: {{ .Values.spec.destination.server }}
+  project: default
+  source:
+    path: helm-guestbook
+    repoURL: {{ .Values.spec.source.repoURL }}
+    targetRevision: {{ .Values.spec.source.targetRevision }}

apps/templates/helm-hooks.yaml

@@ -0,0 +1,17 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: helm-hooks
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  destination:
+    namespace: helm-hooks
+    server: {{ .Values.spec.destination.server }}
+  project: default
+  source:
+    path: helm-hooks
+    repoURL: {{ .Values.spec.source.repoURL }}
+    targetRevision: {{ .Values.spec.source.targetRevision }}
+

apps/templates/kustomize-guestbook.yaml

@@ -0,0 +1,16 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: kustomize-guestbook
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  destination:
+    namespace: kustomize-guestbook
+    server: {{ .Values.spec.destination.server }}
+  project: default
+  source:
+    path: kustomize-guestbook
+    repoURL: {{ .Values.spec.source.repoURL }}
+    targetRevision: {{ .Values.spec.source.targetRevision }}

apps/templates/namespaces.yaml

@@ -0,0 +1,27 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: helm-guestbook
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: helm-hooks
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: kustomize-guestbook
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: sync-waves
+  annotations:
+    argocd.argoproj.io/sync-wave: "-1"

apps/templates/sync-waves.yaml

@@ -0,0 +1,16 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: sync-waves
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  destination:
+    namespace: sync-waves
+    server: {{ .Values.spec.destination.server }}
+  project: default
+  source:
+    path: sync-waves
+    repoURL: {{ .Values.spec.source.repoURL }}
+    targetRevision: {{ .Values.spec.source.targetRevision }}

apps/values.yaml

@@ -0,0 +1,6 @@
+spec:
+  destination:
+    server: https://kubernetes.default.svc
+  source:
+    repoURL: https://github.com/argoproj/argocd-example-apps
+    targetRevision: HEAD

blue-green-deploy/.gitignore

@@ -1,4 +0,0 @@
-/lib
-/.ksonnet/registries
-/app.override.yaml
-/.ks_environment

blue-green-deploy/app.yaml

@@ -1,11 +0,0 @@
-apiVersion: 0.1.0
-environments:
-  default:
-    destination:
-      namespace: default
-      server: https://kubernetes.default.svc
-    k8sVersion: v1.10.0
-    path: default
-kind: ksonnet.io/app
-name: blue-green-deploy
-version: 0.0.1

blue-green-deploy/components/bg-guestbook.jsonnet

@@ -1,64 +0,0 @@
-local env = std.extVar("__ksonnet/environments");
-local params = std.extVar("__ksonnet/params").components["bg-guestbook"];
-[
-   {
-      "apiVersion": "v1",
-      "kind": "Service",
-      "metadata": {
-         "name": params.name,
-         "annotations": {
-             "argocd.argoproj.io/hook": "Skip",
-         },
-      },
-      "spec": {
-         "ports": [
-            {
-               "port": params.servicePort,
-               "targetPort": params.containerPort
-            }
-         ],
-         "selector": {
-            "app": params.name
-         },
-         "type": params.type
-      }
-   },
-   {
-      "apiVersion": "apps/v1beta2",
-      "kind": "Deployment",
-      "metadata": {
-         "name": params.name,
-         "annotations": {
-             "argocd.argoproj.io/hook": "Skip",
-         },
-      },
-      "spec": {
-         "replicas": params.replicas,
-         "selector": {
-            "matchLabels": {
-               "app": params.name
-            },
-         },
-         "template": {
-            "metadata": {
-               "labels": {
-                  "app": params.name
-               }
-            },
-            "spec": {
-               "containers": [
-                  {
-                     "image": params.image,
-                     "name": params.name,
-                     "ports": [
-                     {
-                        "containerPort": params.containerPort
-                     }
-                     ]
-                  }
-               ]
-            }
-         }
-      }
-   }
-]

blue-green-deploy/components/bg-workflow.jsonnet

@@ -1,20 +0,0 @@
-local bgGuestbook = std.extVar("__ksonnet/components")["bg-guestbook"];
-local bgGuestbookSvc = bgGuestbook[0];
-local bgGuestbookDeploy = bgGuestbook[1];
-local parseYaml = std.native("parseYaml");
-local bgWorkflow = parseYaml(importstr 'wf/bluegreen.yaml')[0];
-
-[
-  bgWorkflow + {
-    spec +: {
-      arguments +: {
-        parameters : [
-          {name: "deployment-name", value: bgGuestbookDeploy.metadata.name},
-          {name: "service-name", value: bgGuestbookSvc.metadata.name},
-          {name: "new-deployment-manifest", value: std.manifestJson(bgGuestbookDeploy)},
-          {name: "new-service-manifest", value: std.manifestJson(bgGuestbookSvc)},
-        ],
-      },
-    },
-  }
-]

blue-green-deploy/components/params.libsonnet

@@ -1,19 +0,0 @@
-{
-  global: {
-    // User-defined global parameters; accessible to all component and environments, Ex:
-    // replicas: 4,
-  },
-  components: {
-    // Component-level parameters, defined initially from 'ks prototype use ...'
-    // Each object below should correspond to a component in the components/ directory
-    "bg-guestbook": {
-      containerPort: 80,
-      image: "gcr.io/heptio-images/ks-guestbook-demo:0.2",
-      name: "bg-guestbook",
-      replicas: 3,
-      servicePort: 80,
-      type: "LoadBalancer",
-    },
-    "bg-workflow": {},
-  },
-}

blue-green-deploy/components/wf/bluegreen.yaml

@@ -1,150 +0,0 @@
-# This workflow performs a "blue-green" deployment, while preserving the original deployment object
-# and name. It accomplishes this by temporarily redirecting traffic to a *clone* of the original
-# deployment. Then after upgrading the original deployment to a later version, redirects traffic
-# back to the original (now upgraded) deployment.
-apiVersion: argoproj.io/v1alpha1
-kind: Workflow
-metadata:
-  generateName: k8s-bluegreen-
-  annotations:
-    argocd.argoproj.io/hook: Sync
-spec:
-  entrypoint: k8s-bluegreen
-  arguments:
-    parameters:
-    - name: deployment-name
-    - name: service-name
-    - name: new-deployment-manifest
-    - name: new-service-manifest
- 
-  templates:
-  - name: k8s-bluegreen
-    steps:
-    # 1. Create a parallel Kubernetes deployment with tweaks to name and selectors
-    - - name: create-blue-deployment
-        template: clone-deployment
-
-    # 2. Wait for parallel deployment to become ready
-    - - name: wait-for-blue-deployment
-        template: wait-deployment-ready
-        arguments:
-          parameters:
-          - name: deployment-name
-            value: '{{workflow.parameters.deployment-name}}-blue'
-
-    # 3. Patch the named service to point to the parallel deployment app
-    - - name: switch-service-to-blue-deployment
-        template: patch-service
-
-    # 4. Update the original deployment (receiving no traffic) with a new version
-    - - name: apply-green-deployment
-        template: apply-manifest
-        arguments:
-          parameters:
-          - name: manifest
-            value: '{{workflow.parameters.new-deployment-manifest}}'
-
-    # 5. Wait for the original deployment, now updated, to become ready
-    - - name: wait-for-green-deployment
-        template: wait-deployment-ready
-        arguments:
-          parameters:
-          - name: deployment-name
-            value: '{{workflow.parameters.deployment-name}}'
-
-    # dummy approval step for demo purposes. Sleeps for 30 seconds
-    - - name: approve
-        template: approve
-
-    # 6. Patch the named service to point to the original, now updated app
-    - - name: switch-service-to-green-deployment
-        template: apply-manifest
-        arguments:
-          parameters:
-          - name: manifest
-            value: '{{workflow.parameters.new-service-manifest}}'
-
-    # 7. Remove the cloned deployment (no longer receiving traffic)
-    - - name: delete-cloned-deployment
-        template: delete-deployment
-
-# end of steps
-
-  # clone-deployment creates a "blue" clone of an existing deployment. The string -blue is appended to:
-  #  - metadata.name
-  #  - spec.selector.matchLabels
-  #  - spec.template.metadata.labels
-  - name: clone-deployment
-    container:
-      image: argoproj/argoexec:v2.1.1
-      command: [sh, -c, -x]
-      args:
-      - kubectl get --export -o json deployment.apps/{{workflow.parameters.deployment-name}} > /original-deploy &&
-        jq -r '.metadata.name+="-blue" |
-               .spec.template.metadata.labels += (.spec.template.metadata.labels | to_entries | map(select(.key != "applications.argoproj.io/app-name")) | map(.value+="-blue") | from_entries) |
-               .spec.selector.matchLabels += (.spec.selector.matchLabels | to_entries | map(select(.key != "applications.argoproj.io/app-name")) | map(.value+="-blue") | from_entries)'
-            /original-deploy > /cloned-deploy &&
-        cat  /cloned-deploy &&
-        kubectl apply -o yaml -f /cloned-deploy
-
-  # apply-manifest takes a kubernetes manifest and carrys over the app-name label (if present)
-  # before running `kubectl apply`. The label is used by ArgoCD for monitoring.
-  - name: apply-manifest
-    inputs:
-      parameters:
-      - name: manifest
-      artifacts:
-      - name: manifest-file
-        path: /manifest
-        raw:
-          data: '{{inputs.parameters.manifest}}'
-    container:
-      image: argoproj/argoexec:v2.1.1
-      command: [sh, -c, -x]
-      args:
-      - cp /manifest /manifest-new &&
-        APP_NAME=$(kubectl get -n default -f /manifest-new -o json | jq -r '.metadata.labels."applications.argoproj.io/app-name"') &&
-        if [ "$APP_NAME" != "null" ]; then
-          jq -r --arg APP_NAME "$APP_NAME" '.metadata.labels."applications.argoproj.io/app-name" = $APP_NAME' /manifest-new > /manifest-new.tmp &&
-          mv /manifest-new.tmp /manifest-new &&
-          if [ "$(jq -r .spec.template.metadata.labels /manifest-new)" != "null" ]; then
-            jq -r --arg APP_NAME "$APP_NAME" '.spec.template.metadata.labels."applications.argoproj.io/app-name" = $APP_NAME' /manifest-new > /manifest-new.tmp &&
-            mv /manifest-new.tmp /manifest-new ;
-          fi ;
-        fi &&
-        cat /manifest-new &&
-        kubectl apply -f /manifest-new
-
-  # wait-deployment-ready waits for a deployment to become fully deployed and ready, using the 
-  # `kubectl rollout` command
-  - name: wait-deployment-ready
-    inputs:
-      parameters:
-      - name: deployment-name
-    container:
-      image: argoproj/argoexec:v2.1.1
-      command: [kubectl, rollout, status, --watch=true, 'deployments/{{inputs.parameters.deployment-name}}']
-
-  # patch-service updates the service selector labels to point to the "blue" deployment
-  - name: patch-service
-    container:
-      image: argoproj/argoexec:v2.1.1
-      command: [sh, -c, -x]
-      args:
-      - kubectl get -n default service {{workflow.parameters.service-name}} --export -o json > /original-svc &&
-        jq '.spec.selector = (.spec.selector | with_entries(.value+="-blue"))' /original-svc > /blue-svc &&
-        kubectl apply -o yaml -f /blue-svc
-
-  - name: delete-deployment
-    resource:
-      action: delete
-      manifest: |
-        apiVersion: apps/v1
-        kind: Deployment
-        metadata:
-          name: {{workflow.parameters.deployment-name}}-blue
-
-  - name: approve
-    container:
-      image: argoproj/argoexec:v2.1.1
-      command: [sleep, "30"]

blue-green-deploy/environments/base.libsonnet

@@ -1,4 +0,0 @@
-local components = std.extVar("__ksonnet/components");
-components + {
-  // Insert user-specified overrides here.
-}

blue-green-deploy/environments/default/globals.libsonnet

@@ -1,2 +0,0 @@
-{
-}

blue-green-deploy/environments/default/main.jsonnet

@@ -1,8 +0,0 @@
-local base = import "base.libsonnet";
-// uncomment if you reference ksonnet-lib
-// local k = import "k.libsonnet";
-
-base + {
-  // Insert user-specified overrides here. For example if a component is named \"nginx-deployment\", you might have something like:\n")
-  // "nginx-deployment"+: k.deployment.mixin.metadata.labels({foo: "bar"})
-}

blue-green-deploy/environments/default/params.libsonnet

@@ -1,17 +0,0 @@
-local params = std.extVar("__ksonnet/params");
-local globals = import "globals.libsonnet";
-local envParams = params + {
-  components +: {
-    // Insert component parameter overrides here. Ex:
-    // guestbook +: {
-    //   name: "guestbook-dev",
-    //   replicas: params.global.replicas,
-    // },
-  },
-};
-
-{
-  components: {
-    [x]: envParams.components[x] + globals, for x in std.objectFields(envParams.components)
-  },
-}

blue-green/.helmignore

@@ -0,0 +1,21 @@
+# 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

blue-green/Chart.yaml

@@ -0,0 +1,23 @@
+apiVersion: v2
+name: helm-guestbook
+description: A Helm chart for Kubernetes
+
+# 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"

blue-green/README.md

@@ -0,0 +1,30 @@
+# Blue Green
+
+The blue green strategy is not supported by built-in Kubernetes Deployment but available via third-party Kubernetes controller.
+This example demonstrates how to implement blue-green deployment via [Argo Rollouts](https://github.com/argoproj/argo-rollouts):
+
+1. Install Argo Rollouts controller: https://github.com/argoproj/argo-rollouts#installation
+2. Create a sample application and sync it.
+
+```
+argocd app create --name blue-green --repo https://github.com/argoproj/argocd-example-apps --dest-server https://kubernetes.default.svc --dest-namespace default --path blue-green && argocd app sync blue-green
+```
+
+Once the application is synced you can access it using `blue-green-helm-guestbook` service.
+
+3. Change image version parameter to trigger blue-green deployment process:
+
+```
+argocd app set blue-green -p image.tag=0.2 && argocd app sync blue-green
+```
+
+Now application runs `ks-guestbook-demo:0.1` and `ks-guestbook-demo:0.2` images simultaneously.
+The `ks-guestbook-demo:0.2` is still considered `blue` available only via preview service `blue-green-helm-guestbook-preview`.
+
+4. Promote `ks-guestbook-demo:0.2` to `green` by patching `Rollout` resource:
+
+```
+argocd app patch-resource blue-green --kind Rollout --resource-name blue-green-helm-guestbook --patch '{ "status": { "verifyingPreview": false } }' --patch-type 'application/merge-patch+json'
+```
+
+This promotes `ks-guestbook-demo:0.2` to `green` status and `Rollout` deletes old replica which runs `ks-guestbook-demo:0.1`.

blue-green/templates/NOTES.txt

@@ -0,0 +1,19 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range .Values.ingress.hosts }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ . }}{{ $.Values.ingress.path }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "helm-guestbook.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get svc -w {{ template "helm-guestbook.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "helm-guestbook.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  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={{ template "helm-guestbook.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl port-forward $POD_NAME 8080:80
+{{- end }}

blue-green/templates/_helpers.tpl

@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "helm-guestbook.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 "helm-guestbook.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 "helm-guestbook.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

blue-green/templates/rollout.yaml

@@ -0,0 +1,56 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Rollout
+metadata:
+  name: {{ template "helm-guestbook.fullname" . }}
+  labels:
+    app: {{ template "helm-guestbook.name" . }}
+    chart: {{ template "helm-guestbook.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app: {{ template "helm-guestbook.name" . }}
+      release: {{ .Release.Name }}
+  strategy:
+    blueGreen:
+      activeService: {{ template "helm-guestbook.fullname" . }}
+      previewService: {{ template "helm-guestbook.fullname" . }}-preview
+  template:
+    metadata:
+      labels:
+        app: {{ template "helm-guestbook.name" . }}
+        release: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          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 | indent 12 }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+    {{- end }}

blue-green/templates/services.yaml

@@ -0,0 +1,40 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "helm-guestbook.fullname" . }}
+  labels:
+    app: {{ template "helm-guestbook.name" . }}
+    chart: {{ template "helm-guestbook.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: {{ template "helm-guestbook.name" . }}
+    release: {{ .Release.Name }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "helm-guestbook.fullname" . }}-preview
+  labels:
+    app: {{ template "helm-guestbook.name" . }}
+    chart: {{ template "helm-guestbook.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: {{ template "helm-guestbook.name" . }}
+    release: {{ .Release.Name }}

blue-green/values.yaml

@@ -0,0 +1,45 @@
+# Default values for helm-guestbook.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: gcr.io/heptio-images/ks-guestbook-demo
+  tag: 0.1
+  pullPolicy: IfNotPresent
+
+service:
+  type: ClusterIP
+  port: 80
+
+ingress:
+  enabled: false
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  path: /
+  hosts:
+    - chart-example.local
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+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
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}

guestbook/.gitignore

@@ -1,4 +0,0 @@
-/lib
-/.ksonnet/registries
-/app.override.yaml
-/.ks_environment

guestbook/app.yaml

@@ -1,11 +0,0 @@
-apiVersion: 0.1.0
-environments:
-  default:
-    destination:
-      namespace: default
-      server: https://kubernetes.default.svc
-    k8sVersion: v1.10.0
-    path: default
-kind: ksonnet.io/app
-name: guestbook
-version: 0.0.1

guestbook/components/params.libsonnet

@@ -1,18 +0,0 @@
-{
-  global: {
-    // User-defined global parameters; accessible to all component and environments, Ex:
-    // replicas: 4,
-  },
-  components: {
-    // Component-level parameters, defined initially from 'ks prototype use ...'
-    // Each object below should correspond to a component in the components/ directory
-    "guestbook-ui": {
-      containerPort: 80,
-      image: "gcr.io/heptio-images/ks-guestbook-demo:0.2",
-      name: "guestbook-ui",
-      replicas: 1,
-      servicePort: 80,
-      type: "LoadBalancer",
-    },
-  },
-}

guestbook/environments/base.libsonnet

@@ -1,4 +0,0 @@
-local components = std.extVar("__ksonnet/components");
-components + {
-  // Insert user-specified overrides here.
-}