Merge pull request #294 from MinaFoundation/PM-2068-create-minafounda…

…tion-com-helm-chart

PM-2068 - Add generic "nginx" helm chart

nginx/.helmignore

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+# 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/

nginx/Chart.yaml

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+apiVersion: v2
+name: nginx
+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.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

nginx/README.md

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+# nginx
+
+![Version: 0.1.0](https://img.shields.io/badge/Version-0.1.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 1.16.0](https://img.shields.io/badge/AppVersion-1.16.0-informational?style=flat-square)
+
+A Helm chart for Kubernetes
+
+## Prerequisites
+
+Before using this Helm chart, you should have the following prerequisites:
+
+- Access to Kubernetes cluster (If needed contact your friendly neighbourhood DevOps engineer)
+- Helm >= v3.14.3
+- (**Optional**) helmfile >= v0.162.0 to install this chart
+
+## Installation
+
+> Note: **examples** can be found in the repository
+
+To install this Helm chart, the easiest is to create a helmfile.yaml with needed values and run:
+
+```
+helmfile template
+helmfile apply
+```
+
+Or use helmfile only to generate resources and apply them with kubectl like so:
+
+```
+helmfile template | kubectl -f -
+```
+
+Verify that the chart is deployed successfully:
+
+> Note: `kubectl` is a better suited tool for this
+
+```
+helmfile status
+```
+
+## Values
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| affinity | object | `{}` | Affinity for pod assignment |
+| args | list | `[]` | The arguments to pass at runtime |
+| autoscaling.enabled | bool | `false` | Whether to enable autoscaling |
+| autoscaling.maxReplicas | int | `100` | The maximum number of pods |
+| autoscaling.minReplicas | int | `1` | The minimum number of pods |
+| autoscaling.targetCPUUtilizationPercentage | int | `80` | The metrics to use for autoscaling |
+| command | list | `[]` | The command to pass at runtime |
+| deploymentAnnotations | object | `{}` | Annotations to add to deployments |
+| envVars | object | `{}` |  |
+| fullnameOverride | string | `""` | The full release name override |
+| image.pullPolicy | string | `"IfNotPresent"` | The image pull policy |
+| image.repository | string | `"nginx"` | The image repository |
+| image.tag | string | `""` | Overrides the image tag whose default is the chart appVersion. |
+| imagePullSecrets | list | `[]` | The secrets used to pull the image |
+| ingress.annotations | object | `{}` | Ingress Annotations |
+| ingress.className | string | `""` | Ingress Class Name |
+| ingress.enabled | bool | `false` | Enable Ingress |
+| ingress.hosts[0].host | string | `"chart-example.local"` |  |
+| ingress.hosts[0].paths[0].path | string | `"/"` |  |
+| ingress.hosts[0].paths[0].pathType | string | `"ImplementationSpecific"` |  |
+| ingress.tls | list | `[]` | TLS configuration |
+| lifecycle | object | `{"preStop":{"exec":{"command":["sh","-c","sleep 15 && kill -SIGQUIT 1"]}}}` | Lifecycle hooks |
+| livenessProbe | object | `{"httpGet":{"path":"/_/health","port":"http"}}` | Live and Readiness Probes |
+| nameOverride | string | `""` | The release name override |
+| nodeSelector | object | `{}` | Node selector labels |
+| podAnnotations | object | `{}` | Annotations to add to the pods |
+| podLabels | object | `{}` | Label to add to the pods |
+| podSecurityContext | object | `{}` | The Pod Security Context |
+| readinessProbe.httpGet.path | string | `"/_/health"` |  |
+| readinessProbe.httpGet.port | string | `"http"` |  |
+| replicaCount | int | `1` | Replica count |
+| resources | object | `{}` | The Resources |
+| securityContext | object | `{}` | The Security Context |
+| service.port | int | `80` | The service port |
+| service.type | string | `"ClusterIP"` | The service type |
+| serviceAccount.annotations | object | `{}` | Annotations to add to the service account |
+| serviceAccount.automount | bool | `true` | Automatically mount a ServiceAccount's API credentials? |
+| serviceAccount.create | bool | `true` | Specifies whether a service account should be created |
+| serviceAccount.name | string | `""` | The name of the service account to use. |
+| tolerations | list | `[]` | Tolerations for pod assignment |
+| volumeMounts | list | `[]` | Additional volumeMounts on the output Deployment definition. |
+| volumes | list | `[]` | Additional volumes on the output Deployment definition. |
+

nginx/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "nginx.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 "nginx.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 "nginx.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "nginx.labels" -}}
+helm.sh/chart: {{ include "nginx.chart" . }}
+{{ include "nginx.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "nginx.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "nginx.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "nginx.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "nginx.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

nginx/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "nginx.fullname" . }}
+  labels:
+    {{- include "nginx.labels" . | nindent 4 }}
+  {{- with .Values.deploymentAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "nginx.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "nginx.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "nginx.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 }}
+          {{- with .Values.lifecycle }}
+          lifecycle:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          {{- if .Values.command }}
+          command:
+            {{- toYaml .Values.command | nindent 12 }}
+          {{- end }}
+          {{- if .Values.args }}
+          args:
+            {{- toYaml .Values.args | nindent 12 }}
+          {{- end }}
+          env:
+            {{- if .Values.envVars }}
+            {{- toYaml .Values.envVars | nindent 12 }}
+            {{- end }}
+          livenessProbe:
+            {{- toYaml .Values.livenessProbe | nindent 12 }}
+          readinessProbe:
+            {{- toYaml .Values.readinessProbe | nindent 12 }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          {{- with .Values.volumeMounts }}
+          volumeMounts:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+      {{- with .Values.volumes }}
+      volumes:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

nginx/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "nginx.fullname" . }}
+  labels:
+    {{- include "nginx.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "nginx.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}

nginx/templates/ingress.yaml

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+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "nginx.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if and .Values.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1
+{{- else 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 "nginx.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- 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 }}
+            {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
+{{- end }}

nginx/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "nginx.fullname" . }}
+  labels:
+    {{- include "nginx.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "nginx.selectorLabels" . | nindent 4 }}