lab 10 improved

k8s/your-app/Chart.yaml → k8s/helmapp/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
-name: your-app
+name: helmapp
 description: A Helm chart for Kubernetes
 
 # A chart can be either an 'application' or a 'library' chart.

k8s/your-app/templates/NOTES.txt → k8s/helmapp/templates/NOTES.txt

@@ -6,16 +6,16 @@
   {{- end }}
 {{- end }}
 {{- else if contains "NodePort" .Values.service.type }}
-  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "your-app.fullname" . }})
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "helmapp.fullname" . }})
   export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
   echo http://$NODE_IP:$NODE_PORT
 {{- else if contains "LoadBalancer" .Values.service.type }}
      NOTE: It may take a few minutes for the LoadBalancer IP to be available.
-           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "your-app.fullname" . }}'
-  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "your-app.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "helmapp.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "helmapp.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
   echo http://$SERVICE_IP:{{ .Values.service.port }}
 {{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "your-app.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "helmapp.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
   export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
   echo "Visit http://127.0.0.1:8080 to use your application"
   kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT

k8s/your-app/templates/_helpers.tpl → k8s/helmapp/templates/_helpers.tpl

@@ -1,7 +1,7 @@
 {{/*
 Expand the name of the chart.
 */}}
-{{- define "your-app.name" -}}
+{{- define "helmapp.name" -}}
 {{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
 {{- end }}
 
@@ -10,7 +10,7 @@ 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 "your-app.fullname" -}}
+{{- define "helmapp.fullname" -}}
 {{- if .Values.fullnameOverride }}
 {{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
 {{- else }}
@@ -26,16 +26,16 @@ If release name contains chart name it will be used as a full name.
 {{/*
 Create chart name and version as used by the chart label.
 */}}
-{{- define "your-app.chart" -}}
+{{- define "helmapp.chart" -}}
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
 {{- end }}
 
 {{/*
 Common labels
 */}}
-{{- define "your-app.labels" -}}
-helm.sh/chart: {{ include "your-app.chart" . }}
-{{ include "your-app.selectorLabels" . }}
+{{- define "helmapp.labels" -}}
+helm.sh/chart: {{ include "helmapp.chart" . }}
+{{ include "helmapp.selectorLabels" . }}
 {{- if .Chart.AppVersion }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}
@@ -45,17 +45,17 @@ app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{/*
 Selector labels
 */}}
-{{- define "your-app.selectorLabels" -}}
-app.kubernetes.io/name: {{ include "your-app.name" . }}
+{{- define "helmapp.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "helmapp.name" . }}
 app.kubernetes.io/instance: {{ .Release.Name }}
 {{- end }}
 
 {{/*
 Create the name of the service account to use
 */}}
-{{- define "your-app.serviceAccountName" -}}
+{{- define "helmapp.serviceAccountName" -}}
 {{- if .Values.serviceAccount.create }}
-{{- default (include "your-app.fullname" .) .Values.serviceAccount.name }}
+{{- default (include "helmapp.fullname" .) .Values.serviceAccount.name }}
 {{- else }}
 {{- default "default" .Values.serviceAccount.name }}
 {{- end }}

k8s/your-app/templates/deployment.yaml → k8s/helmapp/templates/deployment.yaml

@@ -1,24 +1,24 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: {{ include "your-app.fullname" . }}
+  name: {{ include "helmapp.fullname" . }}
   labels:
-    {{- include "your-app.labels" . | nindent 4 }}
+    {{- include "helmapp.labels" . | nindent 4 }}
 spec:
   {{- if not .Values.autoscaling.enabled }}
   replicas: {{ .Values.replicaCount }}
   {{- end }}
   selector:
     matchLabels:
-      {{- include "your-app.selectorLabels" . | nindent 6 }}
+      {{- include "helmapp.selectorLabels" . | nindent 6 }}
   template:
     metadata:
       {{- with .Values.podAnnotations }}
       annotations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       labels:
-        {{- include "your-app.labels" . | nindent 8 }}
+        {{- include "helmapp.labels" . | nindent 8 }}
         {{- with .Values.podLabels }}
         {{- toYaml . | nindent 8 }}
         {{- end }}
@@ -27,7 +27,7 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      serviceAccountName: {{ include "your-app.serviceAccountName" . }}
+      serviceAccountName: {{ include "helmapp.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
       containers:
@@ -38,7 +38,7 @@ spec:
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           ports:
             - name: http
-              containerPort: {{ .Values.service.port }}
+              containerPort: {{ .Values.service.port }} # gets it from values
               protocol: TCP
           livenessProbe:
             {{- toYaml .Values.livenessProbe | nindent 12 }}

k8s/your-app/templates/hpa.yaml → k8s/helmapp/templates/hpa.yaml

@@ -2,14 +2,14 @@
 apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:
-  name: {{ include "your-app.fullname" . }}
+  name: {{ include "helmapp.fullname" . }}
   labels:
-    {{- include "your-app.labels" . | nindent 4 }}
+    {{- include "helmapp.labels" . | nindent 4 }}
 spec:
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment
-    name: {{ include "your-app.fullname" . }}
+    name: {{ include "helmapp.fullname" . }}
   minReplicas: {{ .Values.autoscaling.minReplicas }}
   maxReplicas: {{ .Values.autoscaling.maxReplicas }}
   metrics:

k8s/your-app/templates/ingress.yaml → k8s/helmapp/templates/ingress.yaml

@@ -2,9 +2,9 @@
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
-  name: {{ include "your-app.fullname" . }}
+  name: {{ include "helmapp.fullname" . }}
   labels:
-    {{- include "your-app.labels" . | nindent 4 }}
+    {{- include "helmapp.labels" . | nindent 4 }}
   {{- with .Values.ingress.annotations }}
   annotations:
     {{- toYaml . | nindent 4 }}
@@ -35,7 +35,7 @@ spec:
             {{- end }}
             backend:
               service:
-                name: {{ include "your-app.fullname" $ }}
+                name: {{ include "helmapp.fullname" $ }}
                 port:
                   number: {{ $.Values.service.port }}
           {{- end }}

k8s/helmapp/templates/post-install-hook.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+   name: postinstall-hook
+   annotations:
+       "helm.sh/hook": "post-install"
+       "helm.sh/hook-delete-policy": hook-succeeded,hook-failed
+spec:
+  containers:
+  - name: post-install-container
+    image: busybox
+    imagePullPolicy: Always
+    command: ['sh', '-c', 'echo The post-install hook is running && sleep 15' ]
+  restartPolicy: Never
+  terminationGracePeriodSeconds: 0

k8s/helmapp/templates/pre-install-hook.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+   name: preinstall-hook
+   annotations:
+       "helm.sh/hook": "pre-install"
+       "helm.sh/hook-delete-policy": hook-succeeded,hook-failed
+spec:
+  containers:
+  - name: pre-install-container
+    image: busybox
+    imagePullPolicy: IfNotPresent
+    command: ['sh', '-c', 'echo The pre-install hook is running && sleep 20' ]
+  restartPolicy: Never
+  terminationGracePeriodSeconds: 0

k8s/your-app/templates/service.yaml → k8s/helmapp/templates/service.yaml

@@ -1,9 +1,9 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: {{ include "your-app.fullname" . }}
+  name: {{ include "helmapp.fullname" . }}
   labels:
-    {{- include "your-app.labels" . | nindent 4 }}
+    {{- include "helmapp.labels" . | nindent 4 }}
 spec:
   type: {{ .Values.service.type }}
   ports:
@@ -12,4 +12,4 @@ spec:
       protocol: TCP
       name: http
   selector:
-    {{- include "your-app.selectorLabels" . | nindent 4 }}
+    {{- include "helmapp.selectorLabels" . | nindent 4 }}

k8s/your-app/templates/serviceaccount.yaml → k8s/helmapp/templates/serviceaccount.yaml

@@ -2,9 +2,9 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  name: {{ include "your-app.serviceAccountName" . }}
+  name: {{ include "helmapp.serviceAccountName" . }}
   labels:
-    {{- include "your-app.labels" . | nindent 4 }}
+    {{- include "helmapp.labels" . | nindent 4 }}
   {{- with .Values.serviceAccount.annotations }}
   annotations:
     {{- toYaml . | nindent 4 }}

k8s/helmapp/templates/tests/test-connection.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "helmapp.fullname" . }}-test-connection"
+  labels:
+    {{- include "helmapp.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "helmapp.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never

k8s/your-app/values.yaml → k8s/helmapp/values.yaml

@@ -1,4 +1,4 @@
-# Default values for your-app.
+# Default values for helmapp.
 # This is a YAML-formatted file.
 # Declare variables to be passed into your templates.
 
@@ -85,14 +85,15 @@ resources: {}
   #   cpu: 100m
   #   memory: 128Mi
 
-
 # This is to setup the liveness and readiness probes more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
-## httpGet:
-##    port: http
-#readinessProbe:
-#  httpGet:
-#    path: /
- #   port: http
+livenessProbe:
+  httpGet:
+    path: /
+    port: http
+readinessProbe:
+  httpGet:
+    path: /
+    port: http
 
 # This section is for setting up autoscaling more information can be found here: https://kubernetes.io/docs/concepts/workloads/autoscaling/
 autoscaling: