Template variable for container port (#251)

Signed-off-by: Anand Francis Joseph <anjoseph@redhat.com>

README.md

@@ -1 +1,21 @@
 # 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 |
+| [ksonnet-guestbook](ksonnet-guestbook/) | The guestbook app as a ksonnet app |
+| [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/.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/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/guestbook-ui-deployment.yaml

@@ -0,0 +1,20 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: guestbook-ui
+spec:
+  replicas: 1
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app: guestbook-ui
+  template:
+    metadata:
+      labels:
+        app: guestbook-ui
+    spec:
+      containers:
+      - image: gcr.io/heptio-images/ks-guestbook-demo:0.2
+        name: guestbook-ui
+        ports:
+        - containerPort: 80

guestbook/guestbook-ui-svc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: guestbook-ui
+spec:
+  ports:
+  - port: 80
+    targetPort: 80
+  selector:
+    app: guestbook-ui

helm-dependency/Chart.yaml

@@ -0,0 +1,28 @@
+apiVersion: v2
+name: wordpress
+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"
+
+dependencies:
+- name: wordpress
+  version: 9.0.3
+  repository: https://charts.helm.sh/stable

helm-dependency/README.md

@@ -0,0 +1,55 @@
+# Helm Dependencies
+
+This example application demonstrates how an OTS (off-the-shelf) helm chart can be retrieved and
+pinned to a specific helm sem version from an upstream helm repository, and customized using a custom
+values.yaml in the private git repository.
+
+In this example, the wordpress application is pulled from the stable helm repo, and pinned to v5.0.2:
+
+```yaml
+dependencies:
+- name: wordpress
+  version: 5.0.2
+  repository: https://charts.helm.sh/stable
+```
+
+A custom values.yaml is used to customize the parameters of the wordpress helm chart:
+
+```yaml
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    db:
+      password: bar
+    rootUser:
+      password: baz
+```
+
+### Subchart Note
+
+The wordpress chart referenced in this example contains a subchart for mariadb as specified in the requirements.yaml file of the wordpress chart:
+```yaml
+- name: mariadb
+  version: 5.x.x
+  repository: https://charts.helm.sh/stable
+  condition: mariadb.enabled
+  tags:
+    - wordpress-database
+```
+
+In order to disable this chart, you must set the value to false for both `mariadb.enabled` and `wordpress.mariadb.enabled`. The first is used by the mariadb subchart condition field, the second is used by the wordpress chart deployment template. An example demonstration is available in the values-nomaria.yaml file:
+```yaml
+mariadb:
+  enabled: false
+
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    enabled: false
+  externalDatabase:
+    host: localhost
+    user: bn_wordpress
+    password: ""
+    database: bitnami_wordpress
+    port: 3306
+```

helm-dependency/values-nomaria.yaml

@@ -0,0 +1,13 @@
+mariadb:
+  enabled: false
+
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    enabled: false
+  externalDatabase:
+    host: localhost
+    user: bn_wordpress
+    password: ""
+    database: bitnami_wordpress
+    port: 3306

helm-dependency/values.yaml

@@ -0,0 +1,7 @@
+wordpress:
+  wordpressPassword: foo
+  mariadb:
+    db:
+      password: bar
+    rootUser:
+      password: baz

helm-guestbook/.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

helm-guestbook/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"

helm-guestbook/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 }}

helm-guestbook/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 -}}

helm-guestbook/templates/deployment.yaml

@@ -0,0 +1,52 @@
+apiVersion: apps/v1
+kind: Deployment
+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 }}
+  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: {{ .Values.containerPort }}
+              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 }}

helm-guestbook/templates/service.yaml

@@ -0,0 +1,19 @@
+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 }}

helm-guestbook/values-production.yaml

@@ -0,0 +1,2 @@
+service:
+  type: LoadBalancer

helm-guestbook/values.yaml

@@ -0,0 +1,47 @@
+# 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
+
+containerPort: 80
+
+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: {}

helm-hooks/manifests.yaml

@@ -0,0 +1,82 @@
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: upgrade-sql-schema
+  annotations:
+    helm.sh/hook: pre-install
+    helm.sh/hook-weight: "-2"
+spec:
+  template:
+    spec:
+      containers:
+        - name: upgrade-sql-schema
+          image: alpine:latest
+          command: ["sleep", "5"]
+      restartPolicy: Never
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-up
+  annotations:
+    helm.sh/hook: pre-install
+    helm.sh/hook-delete-policy: before-hook-creation
+    helm.sh/hook-weight: "-1"
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-up
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never
+  backoffLimit: 0
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: frontend
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      tier: frontend
+  template:
+    metadata:
+      labels:
+        tier: frontend
+    spec:
+      containers:
+        - name: main
+          image: nginx:latest
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  annotations:
+    helm.sh/hook-weight: "2"
+spec:
+  selector:
+    tier: frontend
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-down
+  annotations:
+    helm.sh/hook: post-install
+    helm.sh/hook-delete-policy: before-hook-creation
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-down
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never

jsonnet-guestbook-tla/guestbook-ui.jsonnet

@@ -0,0 +1,65 @@
+function (
+    containerPort=80, 
+    image="gcr.io/heptio-images/ks-guestbook-demo:0.2", 
+    name="jsonnet-guestbook-ui",
+    replicas=1,
+    servicePort=80, 
+    type="LoadBalancer"
+)
+    [
+    {
+        "apiVersion": "v1",
+        "kind": "Service",
+        "metadata": {
+            "name": name
+        },
+        "spec": {
+            "ports": [
+                {
+                "port": servicePort,
+                "targetPort": containerPort
+                }
+            ],
+            "selector": {
+                "app": name
+            },
+            "type": type
+        }
+    },
+    {
+        "apiVersion": "apps/v1",
+        "kind": "Deployment",
+        "metadata": {
+            "name": name
+        },
+        "spec": {
+            "replicas": replicas,
+            "revisionHistoryLimit": 3,
+            "selector": {
+                "matchLabels": {
+                "app": name
+                },
+            },
+            "template": {
+                "metadata": {
+                "labels": {
+                    "app": name
+                }
+                },
+                "spec": {
+                "containers": [
+                    {
+                        "image": image,
+                        "name": name,
+                        "ports": [
+                        {
+                            "containerPort": containerPort
+                        }
+                        ]
+                    }
+                ]
+                }
+            }
+        }
+    }
+    ]

jsonnet-guestbook/guestbook-ui.jsonnet

@@ -0,0 +1,59 @@
+local params = import 'params.libsonnet';
+
+[
+   {
+      "apiVersion": "v1",
+      "kind": "Service",
+      "metadata": {
+         "name": params.name
+      },
+      "spec": {
+         "ports": [
+            {
+               "port": params.servicePort,
+               "targetPort": params.containerPort
+            }
+         ],
+         "selector": {
+            "app": params.name
+         },
+         "type": params.type
+      }
+   },
+   {
+      "apiVersion": "apps/v1",
+      "kind": "Deployment",
+      "metadata": {
+         "name": params.name
+      },
+      "spec": {
+         "replicas": params.replicas,
+         "revisionHistoryLimit": 3,
+         "selector": {
+            "matchLabels": {
+               "app": params.name
+            },
+         },
+         "template": {
+            "metadata": {
+               "labels": {
+                  "app": params.name
+               }
+            },
+            "spec": {
+               "containers": [
+                  {
+                     "image": params.image,
+                     "name": params.name,
+                     "ports": [
+                     {
+                        "containerPort": params.containerPort
+                     }
+                     ]
+                  }
+               ]
+            }
+         }
+      }
+   }
+]

jsonnet-guestbook/params.libsonnet

@@ -0,0 +1,8 @@
+{
+  containerPort: 80,
+  image: "gcr.io/heptio-images/ks-guestbook-demo:0.2",
+  name: "jsonnet-guestbook-ui",
+  replicas: 1,
+  servicePort: 80,
+  type: "LoadBalancer",
+}

ksonnet-guestbook/app.yaml

@@ -0,0 +1,23 @@
+apiVersion: 0.1.0
+environments:
+  default:
+    destination:
+      namespace: default
+      server: https://kubernetes.default.svc
+    k8sVersion: v1.10.0
+    path: default
+  dev:
+    destination:
+      namespace: dev
+      server: https://kubernetes.default.svc
+    k8sVersion: v1.10.0
+    path: dev
+  prod:
+    destination:
+      namespace: prod
+      server: https://kubernetes.default.svc
+    k8sVersion: v1.10.0
+    path: prod
+kind: ksonnet.io/app
+name: guestbook
+version: 0.0.1

ksonnet-guestbook/components/guestbook-ui.jsonnet

@@ -21,13 +21,14 @@ local params = std.extVar("__ksonnet/params").components["guestbook-ui"];
       }
    },
    {
-      "apiVersion": "apps/v1beta2",
+      "apiVersion": "apps/v1",
       "kind": "Deployment",
       "metadata": {
          "name": params.name
       },
       "spec": {
          "replicas": params.replicas,
+         "revisionHistoryLimit": 3,
          "selector": {
             "matchLabels": {
                "app": params.name

ksonnet-guestbook/components/params.libsonnet

@@ -9,7 +9,7 @@
     "guestbook-ui": {
       containerPort: 80,
       image: "gcr.io/heptio-images/ks-guestbook-demo:0.2",
-      name: "guestbook-ui",
+      name: "ks-guestbook-ui",
       replicas: 1,
       servicePort: 80,
       type: "LoadBalancer",

ksonnet-guestbook/environments/prod/globals.libsonnet

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

ksonnet-guestbook/environments/prod/main.jsonnet

@@ -0,0 +1,8 @@
+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"})
+}

ksonnet-guestbook/environments/prod/params.libsonnet

@@ -0,0 +1,17 @@
+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)
+  },
+}

kustomize-guestbook/guestbook-ui-deployment.yaml

@@ -0,0 +1,20 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: guestbook-ui
+spec:
+  replicas: 1
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app: guestbook-ui
+  template:
+    metadata:
+      labels:
+        app: guestbook-ui
+    spec:
+      containers:
+      - image: gcr.io/heptio-images/ks-guestbook-demo:0.1
+        name: guestbook-ui
+        ports:
+        - containerPort: 80

kustomize-guestbook/guestbook-ui-svc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1	
+kind: Service	
+metadata:	
+  name: guestbook-ui	
+spec:	
+  ports:	
+  - port: 80	
+    targetPort: 80	
+  selector:	
+    app: guestbook-ui

kustomize-guestbook/kustomization.yaml

@@ -0,0 +1,7 @@
+namePrefix: kustomize-
+
+resources:
+- guestbook-ui-deployment.yaml
+- guestbook-ui-svc.yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization

plugins/README.md

@@ -0,0 +1,6 @@
+# Config Management Plugins Examples
+
+| Application | Description |
+|-------------|-------------|
+| [kasane](kasane/) | The guestbook application as a `kasane` package. |
+| [kustomized-helm](kustomized-helm/) | Application comprised of a `helm` chart and customized using `kustomize` |

plugins/kasane/.gitignore

@@ -0,0 +1,2 @@
+vendor
+Kasanefile.lock

plugins/kasane/Kasanefile

@@ -0,0 +1,5 @@
+layers:
+- ../../guestbook/guestbook-ui-deployment.yaml
+- patch.jsonnet
+- ../../guestbook/guestbook-ui-svc.yaml
+

plugins/kasane/README.md

@@ -0,0 +1,29 @@
+# Kasane
+
+[Kasane](https://github.com/google/kasane) is a layering tool for Kubernetes which utilises Jsonnet for deep object modification and patching.
+
+Use following steps to try the application:
+
+* Follow instructions from [custom_tools.md](https://github.com/argoproj/argo-cd/blob/master/docs/operator-manual/custom_tools.md) to make sure `kasane` binary is available in `argocd-repo-server` pod.
+* Register `kasane` plugin `argocd-cm` ConfigMap:
+
+```yaml
+apiVersion: v1
+data:
+  configManagementPlugins: |
+    - name: kasane
+      init:
+        command: [kasane, update]
+      generate:
+        command: [kasane, show]
+```
+* Create application using `kasane` as a config management plugin name.
+
+```
+argocd app create kasane \
+    --config-management-plugin kasane \
+    --repo https://github.com/argoproj/argocd-example-apps \
+    --path plugins/kasane \
+    --dest-server https://kubernetes.default.svc \
+    --dest-namespace default
+```

plugins/kasane/patch.jsonnet

@@ -0,0 +1,9 @@
+function (layers)
+
+[
+  layers[0] {
+    spec+: {
+      replicas: 2,
+    },
+  }
+]

plugins/kustomized-helm/.gitignore

@@ -0,0 +1,3 @@
+all.yaml
+charts
+requirements.lock

plugins/kustomized-helm/Chart.yaml

@@ -0,0 +1,28 @@
+apiVersion: v2
+name: 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"
+
+dependencies:
+- name: helm-guestbook
+  version: 0.1.0
+  repository: file://../../helm-guestbook

plugins/kustomized-helm/README.md

@@ -0,0 +1,31 @@
+# Helm + Kustomize
+
+Sometimes Helm chart don't have all required parameters and additional customization is required. This example application demonstrates how to combine Helm and Kustomize and use it
+as a config management plugin in Argo CD.
+
+Use following steps to try the application:
+
+* configure `kustomized-helm` tool in `argocd-cm` ConfigMap:
+
+```yaml
+  configManagementPlugins: |
+    - name: kustomized-helm
+      init:
+        command: ["/bin/sh", "-c"]
+        args: ["helm dependency build"]
+      generate:
+        command: [sh, -c]
+        args: ["helm template --release-name release-name . > all.yaml && kustomize build"]
+```
+
+* create application using `kustomized-helm` as a config management plugin name:
+
+
+```
+argocd app create kustomized-helm \
+    --config-management-plugin kustomized-helm \
+    --repo https://github.com/argoproj/argocd-example-apps \
+    --path plugins/kustomized-helm \
+    --dest-server https://kubernetes.default.svc \
+    --dest-namespace default
+```

plugins/kustomized-helm/kustomization.yaml

@@ -0,0 +1,7 @@
+namePrefix: kustomize-
+
+resources:
+- ./all.yaml
+
+patches:
+- overlays/guestbook-deployment.yaml

plugins/kustomized-helm/overlays/guestbook-deployment.yaml

@@ -0,0 +1,10 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: release-name-helm-guestbook
+spec:
+  template:
+    spec:
+      containers:
+        - name: helm-guestbook
+          image: "gcr.io/heptio-images/ks-guestbook-demo:0.2"

pre-post-sync/kustomization.yaml

@@ -0,0 +1,8 @@
+namePrefix: pre-post-sync-
+
+bases:
+- ../kustomize-guestbook
+
+resources:
+- pre-sync-job.yaml
+- post-sync-job.yaml

pre-post-sync/post-sync-job.yaml

@@ -0,0 +1,16 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: after
+  annotations:
+    argocd.argoproj.io/hook: PostSync
+    argocd.argoproj.io/hook-delete-policy: HookSucceeded
+spec:
+  template:
+    spec:
+      containers:
+      - name: sleep
+        image: alpine:latest
+        command: ["sleep", "10"]
+      restartPolicy: Never
+  backoffLimit: 0

pre-post-sync/pre-sync-job.yaml

@@ -0,0 +1,16 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: before
+  annotations:
+    argocd.argoproj.io/hook: PreSync
+    argocd.argoproj.io/hook-delete-policy: HookSucceeded
+spec:
+  template:
+    spec:
+      containers:
+      - name: sleep
+        image: alpine:latest
+        command: ["sleep", "10"]
+      restartPolicy: Never
+  backoffLimit: 0

sock-shop/.gitignore

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

sock-shop/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: sock-shop
-version: 0.0.1

sock-shop/components/params.libsonnet

@@ -1,37 +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
-    "carts-db-dep": {},
-    "carts-db-svc": {},
-    "carts-dep": {},
-    "catalogue-db-dep": {},
-    "catalogue-db-svc": {},
-    "catalogue-dep": {},
-    "catalogue-svc": {},
-    "front-end-dep": {},
-    "front-end-svc": {},
-    "orders-db-dep": {},
-    "orders-db-svc": {},
-    "orders-dep": {},
-    "orders-svc": {},
-    "payment-dep": {},
-    "payment-svc": {},
-    "queue-master-dep": {},
-    "queue-master-svc": {},
-    "rabbitmq-dep": {},
-    "rabbitmq-svc": {},
-    "session-db-dep": {},
-    "session-db-svc": {},
-    "shipping-dep": {},
-    "shipping-svc": {},
-    "user-db-dep": {},
-    "user-db-svc": {},
-    "user-dep": {},
-    "user-svc": {},
-  },
-}

sock-shop/environments/base.libsonnet

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

sock-shop/kustomization.yaml

@@ -0,0 +1,28 @@
+resources:
+- base/carts-db-dep.yaml
+- base/carts-db-svc.yaml
+- base/carts-dep.yaml
+- base/catalogue-db-dep.yaml
+- base/catalogue-db-svc.yaml
+- base/catalogue-dep.yaml
+- base/catalogue-svc.yaml
+- base/front-end-dep.yaml
+- base/front-end-svc.yaml
+- base/orders-db-dep.yaml
+- base/orders-db-svc.yaml
+- base/orders-dep.yaml
+- base/orders-svc.yaml
+- base/payment-dep.yaml
+- base/payment-svc.yaml
+- base/queue-master-dep.yaml
+- base/queue-master-svc.yaml
+- base/rabbitmq-dep.yaml
+- base/rabbitmq-svc.yaml
+- base/session-db-dep.yaml
+- base/session-db-svc.yaml
+- base/shipping-dep.yaml
+- base/shipping-svc.yaml
+- base/user-db-dep.yaml
+- base/user-db-svc.yaml
+- base/user-dep.yaml
+- base/user-svc.yaml

sync-waves/manifests.yaml

@@ -0,0 +1,114 @@
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: upgrade-sql-schema
+  annotations:
+    argocd.argoproj.io/hook: PreSync
+spec:
+  template:
+    spec:
+      containers:
+        - name: upgrade-sql-schema
+          image: alpine:latest
+          command: ["sleep", "5"]
+      restartPolicy: Never
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: backend
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      tier: backend
+  template:
+    metadata:
+      labels:
+        tier: backend
+    spec:
+      containers:
+        - name: main
+          image: nginx:latest
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+spec:
+  selector:
+    tier: backend
+  ports:
+    - protocol: TCP
+      port: 8080
+      targetPort: 8080
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-up
+  annotations:
+    argocd.argoproj.io/hook: Sync
+    argocd.argoproj.io/hook-delete-policy: BeforeHookCreation
+    argocd.argoproj.io/sync-wave: "1"
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-up
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never
+  backoffLimit: 0
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: frontend
+  annotations:
+    argocd.argoproj.io/sync-wave: "2"
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      tier: frontend
+  template:
+    metadata:
+      labels:
+        tier: frontend
+    spec:
+      containers:
+        - name: main
+          image: nginx:latest
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  annotations:
+    argocd.argoproj.io/sync-wave: "2"
+spec:
+  selector:
+    tier: frontend
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: maint-page-down
+  annotations:
+    argocd.argoproj.io/hook: Sync
+    argocd.argoproj.io/hook-delete-policy: BeforeHookCreation
+    argocd.argoproj.io/sync-wave: "3"
+spec:
+  template:
+    spec:
+      containers:
+        - name: page-down
+          image: alpine:latest
+          command: ["sleep", "2"]
+      restartPolicy: Never