From 88b868c6f5f454b3417b04bf5b21bd286d9352fd Mon Sep 17 00:00:00 2001 From: Cloud User Date: Tue, 22 Dec 2020 02:42:24 +0000 Subject: [PATCH] Added helm chart --- helmchart/.helmignore | 23 ++++++ helmchart/Chart.yaml | 23 ++++++ helmchart/templates/NOTES.txt | 22 +++++ helmchart/templates/_helpers.tpl | 62 ++++++++++++++ helmchart/templates/deployment.yaml | 61 ++++++++++++++ helmchart/templates/hpa.yaml | 28 +++++++ helmchart/templates/ingress.yaml | 41 ++++++++++ helmchart/templates/service.yaml | 15 ++++ helmchart/templates/serviceaccount.yaml | 12 +++ .../templates/tests/test-connection.yaml | 15 ++++ helmchart/values.yaml | 81 +++++++++++++++++++ 11 files changed, 383 insertions(+) create mode 100644 helmchart/.helmignore create mode 100644 helmchart/Chart.yaml create mode 100644 helmchart/templates/NOTES.txt create mode 100644 helmchart/templates/_helpers.tpl create mode 100644 helmchart/templates/deployment.yaml create mode 100644 helmchart/templates/hpa.yaml create mode 100644 helmchart/templates/ingress.yaml create mode 100644 helmchart/templates/service.yaml create mode 100644 helmchart/templates/serviceaccount.yaml create mode 100644 helmchart/templates/tests/test-connection.yaml create mode 100644 helmchart/values.yaml diff --git a/helmchart/.helmignore b/helmchart/.helmignore new file mode 100644 index 00000000..0e8a0eb3 --- /dev/null +++ b/helmchart/.helmignore @@ -0,0 +1,23 @@ +# 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 +*.orig +*~ +# Various IDEs +.project +.idea/ +*.tmproj +.vscode/ diff --git a/helmchart/Chart.yaml b/helmchart/Chart.yaml new file mode 100644 index 00000000..0ad80316 --- /dev/null +++ b/helmchart/Chart.yaml @@ -0,0 +1,23 @@ +apiVersion: v2 +name: javawebapp +description: A Helm chart for Mithun tech JavaWeb Application + +# 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: 1.16.0 diff --git a/helmchart/templates/NOTES.txt b/helmchart/templates/NOTES.txt new file mode 100644 index 00000000..3e5f39af --- /dev/null +++ b/helmchart/templates/NOTES.txt @@ -0,0 +1,22 @@ +1. Get the application URL by running these commands: +{{- if .Values.ingress.enabled }} +{{- range $host := .Values.ingress.hosts }} + {{- range .paths }} + http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }} + {{- end }} +{{- end }} +{{- else if contains "NodePort" .Values.service.type }} + export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "javawebapp.fullname" . }}) + export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}") + echo http://$NODE_IP:$NODE_PORT +{{- else if contains "LoadBalancer" .Values.service.type }} + NOTE: It may take a few minutes for the LoadBalancer IP to be available. + You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "javawebapp.fullname" . }}' + export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "javawebapp.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 "javawebapp.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 +{{- end }} diff --git a/helmchart/templates/_helpers.tpl b/helmchart/templates/_helpers.tpl new file mode 100644 index 00000000..af24849d --- /dev/null +++ b/helmchart/templates/_helpers.tpl @@ -0,0 +1,62 @@ +{{/* +Expand the name of the chart. +*/}} +{{- define "javawebapp.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 "javawebapp.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 "javawebapp.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Common labels +*/}} +{{- define "javawebapp.labels" -}} +helm.sh/chart: {{ include "javawebapp.chart" . }} +{{ include "javawebapp.selectorLabels" . }} +{{- if .Chart.AppVersion }} +app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} +{{- end }} +app.kubernetes.io/managed-by: {{ .Release.Service }} +{{- end }} + +{{/* +Selector labels +*/}} +{{- define "javawebapp.selectorLabels" -}} +app.kubernetes.io/name: {{ include "javawebapp.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +{{- end }} + +{{/* +Create the name of the service account to use +*/}} +{{- define "javawebapp.serviceAccountName" -}} +{{- if .Values.serviceAccount.create }} +{{- default (include "javawebapp.fullname" .) .Values.serviceAccount.name }} +{{- else }} +{{- default "default" .Values.serviceAccount.name }} +{{- end }} +{{- end }} diff --git a/helmchart/templates/deployment.yaml b/helmchart/templates/deployment.yaml new file mode 100644 index 00000000..c606a42f --- /dev/null +++ b/helmchart/templates/deployment.yaml @@ -0,0 +1,61 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: {{ include "javawebapp.fullname" . }} + labels: + {{- include "javawebapp.labels" . | nindent 4 }} +spec: + {{- if not .Values.autoscaling.enabled }} + replicas: {{ .Values.replicaCount }} + {{- end }} + selector: + matchLabels: + {{- include "javawebapp.selectorLabels" . | nindent 6 }} + template: + metadata: + {{- with .Values.podAnnotations }} + annotations: + {{- toYaml . | nindent 8 }} + {{- end }} + labels: + {{- include "javawebapp.selectorLabels" . | nindent 8 }} + spec: + {{- with .Values.imagePullSecrets }} + imagePullSecrets: + {{- toYaml . | nindent 8 }} + {{- end }} + serviceAccountName: {{ include "javawebapp.serviceAccountName" . }} + securityContext: + {{- toYaml .Values.podSecurityContext | nindent 8 }} + containers: + - name: {{ .Chart.Name }} + securityContext: + {{- toYaml .Values.securityContext | nindent 12 }} + image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}" + 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 | nindent 12 }} + {{- with .Values.nodeSelector }} + nodeSelector: + {{- toYaml . | nindent 8 }} + {{- end }} + {{- with .Values.affinity }} + affinity: + {{- toYaml . | nindent 8 }} + {{- end }} + {{- with .Values.tolerations }} + tolerations: + {{- toYaml . | nindent 8 }} + {{- end }} diff --git a/helmchart/templates/hpa.yaml b/helmchart/templates/hpa.yaml new file mode 100644 index 00000000..bf25d316 --- /dev/null +++ b/helmchart/templates/hpa.yaml @@ -0,0 +1,28 @@ +{{- if .Values.autoscaling.enabled }} +apiVersion: autoscaling/v2beta1 +kind: HorizontalPodAutoscaler +metadata: + name: {{ include "javawebapp.fullname" . }} + labels: + {{- include "javawebapp.labels" . | nindent 4 }} +spec: + scaleTargetRef: + apiVersion: apps/v1 + kind: Deployment + name: {{ include "javawebapp.fullname" . }} + minReplicas: {{ .Values.autoscaling.minReplicas }} + maxReplicas: {{ .Values.autoscaling.maxReplicas }} + metrics: + {{- if .Values.autoscaling.targetCPUUtilizationPercentage }} + - type: Resource + resource: + name: cpu + targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }} + {{- end }} + {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }} + - type: Resource + resource: + name: memory + targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }} + {{- end }} +{{- end }} diff --git a/helmchart/templates/ingress.yaml b/helmchart/templates/ingress.yaml new file mode 100644 index 00000000..ac5290c0 --- /dev/null +++ b/helmchart/templates/ingress.yaml @@ -0,0 +1,41 @@ +{{- if .Values.ingress.enabled -}} +{{- $fullName := include "javawebapp.fullname" . -}} +{{- $svcPort := .Values.service.port -}} +{{- if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}} +apiVersion: networking.k8s.io/v1beta1 +{{- else -}} +apiVersion: extensions/v1beta1 +{{- end }} +kind: Ingress +metadata: + name: {{ $fullName }} + labels: + {{- include "javawebapp.labels" . | nindent 4 }} + {{- with .Values.ingress.annotations }} + annotations: + {{- toYaml . | nindent 4 }} + {{- end }} +spec: + {{- if .Values.ingress.tls }} + tls: + {{- range .Values.ingress.tls }} + - hosts: + {{- range .hosts }} + - {{ . | quote }} + {{- end }} + secretName: {{ .secretName }} + {{- end }} + {{- end }} + rules: + {{- range .Values.ingress.hosts }} + - host: {{ .host | quote }} + http: + paths: + {{- range .paths }} + - path: {{ .path }} + backend: + serviceName: {{ $fullName }} + servicePort: {{ $svcPort }} + {{- end }} + {{- end }} + {{- end }} diff --git a/helmchart/templates/service.yaml b/helmchart/templates/service.yaml new file mode 100644 index 00000000..1b93c9de --- /dev/null +++ b/helmchart/templates/service.yaml @@ -0,0 +1,15 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ include "javawebapp.fullname" . }} + labels: + {{- include "javawebapp.labels" . | nindent 4 }} +spec: + type: {{ .Values.service.type }} + ports: + - port: {{ .Values.service.port }} + targetPort: http + protocol: TCP + name: http + selector: + {{- include "javawebapp.selectorLabels" . | nindent 4 }} diff --git a/helmchart/templates/serviceaccount.yaml b/helmchart/templates/serviceaccount.yaml new file mode 100644 index 00000000..f52a785e --- /dev/null +++ b/helmchart/templates/serviceaccount.yaml @@ -0,0 +1,12 @@ +{{- if .Values.serviceAccount.create -}} +apiVersion: v1 +kind: ServiceAccount +metadata: + name: {{ include "javawebapp.serviceAccountName" . }} + labels: + {{- include "javawebapp.labels" . | nindent 4 }} + {{- with .Values.serviceAccount.annotations }} + annotations: + {{- toYaml . | nindent 4 }} + {{- end }} +{{- end }} diff --git a/helmchart/templates/tests/test-connection.yaml b/helmchart/templates/tests/test-connection.yaml new file mode 100644 index 00000000..35fc5fc6 --- /dev/null +++ b/helmchart/templates/tests/test-connection.yaml @@ -0,0 +1,15 @@ +apiVersion: v1 +kind: Pod +metadata: + name: "{{ include "javawebapp.fullname" . }}-test-connection" + labels: + {{- include "javawebapp.labels" . | nindent 4 }} + annotations: + "helm.sh/hook": test +spec: + containers: + - name: wget + image: busybox + command: ['wget'] + args: ['{{ include "javawebapp.fullname" . }}:{{ .Values.service.port }}'] + restartPolicy: Never diff --git a/helmchart/values.yaml b/helmchart/values.yaml new file mode 100644 index 00000000..6d164203 --- /dev/null +++ b/helmchart/values.yaml @@ -0,0 +1,81 @@ +# Default values for javawebapp. +# This is a YAML-formatted file. +# Declare variables to be passed into your templates. + +replicaCount: 1 + +containerPort: 8080 + +image: + repository: dockerhandson/java-web-app + pullPolicy: IfNotPresent + # Overrides the image tag whose default is the chart appVersion. + tag: "latest" + +imagePullSecrets: [] +nameOverride: "" +fullnameOverride: "" + +serviceAccount: + # Specifies whether a service account should be created + create: true + # Annotations to add to the service account + annotations: {} + # The name of the service account to use. + # If not set and create is true, a name is generated using the fullname template + name: "" + +podAnnotations: {} + +podSecurityContext: {} + # fsGroup: 2000 + +securityContext: {} + # capabilities: + # drop: + # - ALL + # readOnlyRootFilesystem: true + # runAsNonRoot: true + # runAsUser: 1000 + +service: + type: ClusterIP + port: 80 + +ingress: + enabled: false + annotations: {} + # kubernetes.io/ingress.class: nginx + # kubernetes.io/tls-acme: "true" + hosts: + - host: chart-example.local + paths: [] + 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 + +autoscaling: + enabled: true + minReplicas: 1 + maxReplicas: 100 + targetCPUUtilizationPercentage: 80 + # targetMemoryUtilizationPercentage: 80 + +nodeSelector: {} + +tolerations: [] + +affinity: {}