Adds initial Node.js Helm chart

charts/nodejs/.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/

charts/nodejs/Chart.yaml

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+apiVersion: v2
+name: nodejs
+description: A Helm chart for Node.js applications on 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: "0.0.1"

charts/nodejs/README.md

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+# nodejs
+
+![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 Node.js application
+
+## Values
+
+### Networking Settings
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| ingress | object | `{"annotations":{},"className":"","enabled":false,"hosts":[{"host":"chart-example.local","paths":[{"path":"/","pathType":"ImplementationSpecific"}]}],"tls":[]}` | Ingress settings |
+| service | object | `{"port":80,"type":"ClusterIP"}` | Service settings |
+
+### Node.js Settings
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| nodejs | object | A complex object. Please check values below | Node.js Specific Configurations |
+| nodejs.env.envFromSecretsManager.enabled | Enable environment variables from AWS Secrets Manager | bool | `false` |
+| nodejs.env.envFromSecretsManager.secretPath | AWS Secrets Manager secret path | string | `""` |
+| nodejs.env.variables | Environment variables as key-value pairs | object | `{}` |
+| nodejs.image.pullPolicy | Image pull policy | string | `"IfNotPresent"` |
+| nodejs.image.repository | Node.js image repository | string | `"nodejs"` |
+| nodejs.image.tag | Overrides the image tag whose default is the chart appVersion | string | `""` |
+| nodejs.podSecurityContext | Pod security context | object | `{}` |
+| nodejs.port | Node.js application port | string | `"3000"` |
+| nodejs.resources | Resource limits and requests | object | `{}` |
+| nodejs.securityContext | Security context for Node.js container | object | `{}` |
+| nodejs.volumeMounts | list | `[]` | Node.js container additional volumes mounts |
+| nodejs.volumes | list | `[]` | Node.js container additional volumes |
+
+### NginX Settings
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| nginx | object | A complex object. Please check values below | NginX Specific Configurations |
+| nginx.image | object | `{"pullPolicy":"IfNotPresent","repository":"nginx","tag":""}` | NginX image settings |
+| nginx.image.tag | string | `""` | Overrides the image tag whose default is the chart appVersion |
+| nginx.resources | object | `{}` | NginX container resources |
+| nginx.securityContext | object | `{}` | NginX container security context |
+| nginx.volumeMounts | list | `[]` | NginX container additional volumes mounts |
+| nginx.volumes | list | `[]` | NginX container additional volumes |
+
+### Other Values
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| affinity | object | `{}` | Affinity settings |
+| autoscaling | object | `{"enabled":false,"maxReplicas":100,"minReplicas":1,"targetCPUUtilizationPercentage":80}` | Autoscaling settings |
+| fullnameOverride | string | `""` | Overrides full release name |
+| imagePullSecrets | list | `[]` | Secret that used to store docker registry credentials |
+| ingress.enabled | bool | `false` | Enables ingress when true |
+| nameOverride | string | `""` | Overrides release name |
+| nodeSelector | object | `{}` | Node selector settings |
+| podAnnotations | object | `{}` | Annotations to add to the pod |
+| podLabels | object | `{}` | Labels to add to the pod |
+| podSecurityContext | object | `{}` | Security context of the pod |
+| replicaCount | int | `1` | Number of replicas to sping up |
+| serviceAccount | object | `{"annotations":{},"automount":true,"create":true,"name":""}` | Service Account |
+| 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 settings |
+
+----------------------------------------------
+Autogenerated from chart metadata using [helm-docs v1.14.2](https://github.com/norwoodj/helm-docs/releases/v1.14.2)

charts/nodejs/templates/NOTES.txt

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+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 "nodejs.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "nodejs.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "nodejs.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 "nodejs.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 }}

charts/nodejs/templates/_helpers.tpl

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

charts/nodejs/templates/configmaps.yaml

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+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "nodejs.fullname" . }}-nginx-conf
+data:
+  nginx.conf: |
+    user  nginx;
+    worker_processes  auto;
+
+    error_log  /var/log/nginx/error.log notice;
+    pid        /var/run/nginx.pid;
+
+
+    events {
+        worker_connections  1024;
+    }
+
+    http {
+      ##
+      # Basic Settings
+      ##
+      sendfile on;
+      tcp_nopush on;
+      types_hash_max_size 2048;
+      keepalive_timeout  65;
+      server_tokens off;
+
+      # server_names_hash_bucket_size 64;
+      # server_name_in_redirect off;
+
+      include       /etc/nginx/mime.types;
+      default_type application/octet-stream;
+
+      ##
+      # Real IP
+      ##
+      set_real_ip_from 173.245.48.0/20;
+      set_real_ip_from 103.21.244.0/22;
+      set_real_ip_from 103.22.200.0/22;
+      set_real_ip_from 103.31.4.0/22;
+      set_real_ip_from 141.101.64.0/18;
+      set_real_ip_from 108.162.192.0/18;
+      set_real_ip_from 190.93.240.0/20;
+      set_real_ip_from 188.114.96.0/20;
+      set_real_ip_from 197.234.240.0/22;
+      set_real_ip_from 198.41.128.0/17;
+      set_real_ip_from 162.158.0.0/15;
+      set_real_ip_from 104.16.0.0/13;
+      set_real_ip_from 104.24.0.0/14;
+      set_real_ip_from 172.64.0.0/13;
+      set_real_ip_from 131.0.72.0/22;
+
+      real_ip_header X-Forwarded-For;
+
+      ##
+      # SSL Settings
+      ##
+      ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
+      ssl_prefer_server_ciphers on;
+
+      ##
+      # Logging Settings
+      ##
+      log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+                        '$status $body_bytes_sent "$http_referer" '
+                        '"$http_user_agent" "$http_x_forwarded_for"';
+
+      log_format enhanced '$remote_addr [$http_x_forwarded_for] - $upstream_addr [$time_local] '
+                              '"$request" $status $body_bytes_sent '
+                              '"$http_referer" "$http_user_agent" $request_time $upstream_response_time';
+
+      access_log /var/log/nginx/access.log enhanced;
+
+      ##
+      # Gzip Settings
+      ##
+      gzip on;
+      # gzip_vary on;
+      # gzip_proxied any;
+      # gzip_comp_level 6;
+      # gzip_buffers 16 8k;
+      # gzip_http_version 1.1;
+      # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+
+      ##
+      # Virtual Host Configs
+      ##
+      upstream nodejs_upstream {
+          server localhost:{{ .Values.nodejs.port | default "3000" }};
+      }
+
+      server {
+        listen 80 default_server;
+        client_max_body_size 4G;
+
+        server_name _;
+
+        location / {
+          proxy_set_header Host $http_host;
+          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+          proxy_set_header X-Forwarded-Proto $scheme;
+          proxy_set_header Upgrade $http_upgrade;
+          proxy_set_header Connection $connection_upgrade;
+          proxy_redirect off;
+          proxy_buffering off;
+          proxy_pass http://nodejs_upstream;
+        }
+      }
+
+      map $http_upgrade $connection_upgrade {
+        default upgrade;
+        '' close;
+      }
+    }