From eb8e6805914d912be374eb86731a88c3936b91b8 Mon Sep 17 00:00:00 2001
From: Luiz Felipe Kina <LuizFelipe.EiskeKina@windriver.com>
Date: Wed, 22 Jun 2022 22:08:25 -0400
Subject: [PATCH] Add sample app to metrics-server

Signed-off-by: Luiz Felipe Kina <LuizFelipe.EiskeKina@windriver.com>
---
 templates/sample-app-cluster-role-binding.yml | 16 ++++++++++++
 templates/sample-app-cluster-role.yml         | 17 +++++++++++++
 templates/sample-app-deployment.yml           | 25 +++++++++++++++++++
 templates/sample-app-namespace.yml            |  6 +++++
 templates/sample-app-service-account.yml      |  9 +++++++
 values.yaml                                   |  9 +++++++
 6 files changed, 82 insertions(+)
 create mode 100644 templates/sample-app-cluster-role-binding.yml
 create mode 100644 templates/sample-app-cluster-role.yml
 create mode 100644 templates/sample-app-deployment.yml
 create mode 100644 templates/sample-app-namespace.yml
 create mode 100644 templates/sample-app-service-account.yml

diff --git a/templates/sample-app-cluster-role-binding.yml b/templates/sample-app-cluster-role-binding.yml
new file mode 100644
index 0000000..ad4e316
--- /dev/null
+++ b/templates/sample-app-cluster-role-binding.yml
@@ -0,0 +1,16 @@
+{{- if .Values.sampleApp.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app: metric-server-test-app
+  name: access-metrics-api
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: access-metrics-api
+subjects:
+- kind: ServiceAccount
+  name: metric-server-test-app
+  namespace: metric-server-test-app
+{{- end }}
\ No newline at end of file
diff --git a/templates/sample-app-cluster-role.yml b/templates/sample-app-cluster-role.yml
new file mode 100644
index 0000000..c78fb28
--- /dev/null
+++ b/templates/sample-app-cluster-role.yml
@@ -0,0 +1,17 @@
+{{- if .Values.sampleApp.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app: metric-server-test-app
+  name: access-metrics-api
+rules:
+- apiGroups:
+    - metrics.k8s.io
+  resources:
+    - pods
+    - nodes
+  verbs:
+    - get
+    - list
+{{- end }}
\ No newline at end of file
diff --git a/templates/sample-app-deployment.yml b/templates/sample-app-deployment.yml
new file mode 100644
index 0000000..d26498b
--- /dev/null
+++ b/templates/sample-app-deployment.yml
@@ -0,0 +1,25 @@
+{{- if .Values.sampleApp.create -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: metric-server-test-app-deployment
+  namespace: metric-server-test-app
+spec:
+  selector:
+    matchLabels:
+      app: metric-server-test-app
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: metric-server-test-app
+    spec:
+      containers:
+      - name: sample-app
+        image: {{ printf "%s:%s" .Values.sampleApp.image.repository (.Values.sampleApp.image.tag | default "latest") }}
+        imagePullPolicy: IfNotPresent
+        env:
+        - name: TOKEN_PATH
+          value: /var/run/secrets/kubernetes.io/serviceaccount/token
+      serviceAccountName: metric-server-test-app
+{{- end -}}
diff --git a/templates/sample-app-namespace.yml b/templates/sample-app-namespace.yml
new file mode 100644
index 0000000..5a83759
--- /dev/null
+++ b/templates/sample-app-namespace.yml
@@ -0,0 +1,6 @@
+{{- if .Values.sampleApp.create -}}
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: metric-server-test-app
+{{- end }}
diff --git a/templates/sample-app-service-account.yml b/templates/sample-app-service-account.yml
new file mode 100644
index 0000000..5e116c0
--- /dev/null
+++ b/templates/sample-app-service-account.yml
@@ -0,0 +1,9 @@
+{{- if .Values.sampleApp.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app: metric-server-test-app
+  name: metric-server-test-app
+  namespace: metric-server-test-app
+{{- end }}
\ No newline at end of file
diff --git a/values.yaml b/values.yaml
index 6a97505..5167d25 100644
--- a/values.yaml
+++ b/values.yaml
@@ -128,3 +128,12 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+# If you want to deploy a sample app application to test metrics server
+# Set the create value to true
+sampleApp:
+  create: false
+  image:
+    repository: docker.io/starlingx/stx-metrics-server-sample-app
+    tag: stx.7.0-v1.0.0
+
-- 
2.29.2