Iris MyHTG

MyHTG is a comprehensive web application platform that provides multi-language frontend support with advanced NGINX configuration capabilities.

TL;DR

helm repo add htg https://charts.htg.es
helm install infra-iris-myhtg htg/infra-iris-myhtg

Introduction

This chart bootstraps an MyHTG deployment on a Kubernetes cluster using the Helm package manager.

Bitnami charts can be used with Kubeapps for deployment and management of Helm Charts in clusters.

Prerequisites

• Kubernetes 1.19+
• Helm 3.2.0+

Installing the Chart

To install the chart with the release name infra-iris-myhtg:

helm install infra-iris-myhtg oci://registry-1.docker.io/htg/infra-iris-myhtg

The command deploys Iris frontends on the Kubernetes cluster in the default configuration. The Parameters section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Uninstalling the Chart

To uninstall/delete the infra-iris-myhtg deployment:

helm delete infra-iris-myhtg

The command removes all the Kubernetes components associated with the chart and deletes the release.

Parameters

Global parameters

Name	Description	Value
replicaCount	Number of container replicas	1
nameOverride	String to partially override common.names.fullname	""
fullnameOverride	String to fully override common.names.fullname	""

Image parameters

Name	Description	Value
image.repository	Iris frontends image repository	""
image.tag	Iris frontends image tag (immutable tags are recommended)	""
image.pullPolicy	Iris frontends image pull policy	IfNotPresent

Application configuration parameters

Name	Description	Value
configuration.app	Application configuration for app.config.json	{}
configuration.nginx.securityHeaders.contentSecurityPolicy.enabled	Enable Content-Security-Policy header	false
configuration.nginx.securityHeaders.contentSecurityPolicy.value	Content-Security-Policy header value	"default-src 'self';"
configuration.nginx.securityHeaders.strictTransportSecurity.enabled	Enable Strict-Transport-Security header	false
configuration.nginx.securityHeaders.strictTransportSecurity.value	Strict-Transport-Security header value	"max-age=31536000; includeSubDomains"

Deployment parameters

Name	Description	Value
strategy	Pods replacement strategy type	{}

Service Account parameters

Name	Description	Value
serviceAccount.create	Specifies whether a ServiceAccount should be created	true
serviceAccount.name	The name of the ServiceAccount to use	""
serviceAccount.annotations	Additional Service Account annotations	{}
serviceAccount.automount	Automount service account token	true

Pod parameters

Name	Description	Value
podLabels	Extra labels for pods	{}
podAnnotations	Annotations for pods	{}
podSecurityContext	Security context for pods	{}
securityContext	Security context for application container	{}

Health checks

Name	Description	Value
readinessProbe.enabled	Enable readiness probe	"true"
readinessProbe.path	Path for readiness probe	/healthz
readinessProbe.port	Port for readiness probe	http
livenessProbe.enabled	Enable liveness probe	"true"
livenessProbe.path	Path for liveness probe	/healthz
livenessProbe.port	Port for liveness probe	http
customLivenessProbe	Custom liveness probe configuration	{}
customReadinessProbe	Custom readiness probe configuration	{}

Resource parameters

Name	Description	Value
resources	Set container requests and limits for CPU or memory	{}

Scheduling parameters

Name	Description	Value
affinity	Affinity for pod assignment	{}
nodeSelector	Node labels for pod assignment	{}
tolerations	Tolerations for pod assignment	[]

Volume parameters

Name	Description	Value
extraVolumeMounts	Optionally specify extra list of additional volumeMounts	[]
extraVolumes	Optionally specify extra list of additional volumes	[]

Service parameters

Name	Description	Value
service.type	Kubernetes service type	ClusterIP
service.port	Service HTTP port	80

Ingress parameters

Name	Description	Value
ingress.enabled	Enable ingress record generation	false
ingress.className	IngressClass that will be used	""
ingress.annotations	Additional annotations for the Ingress resource	{}
ingress.hosts	An array with hosts and paths	[{"host": "chart-example.local", "paths": [{"path": "/", "pathType": "ImplementationSpecific"}]}]
ingress.tls	TLS configuration for additional hostnames	[]

Autoscaling parameters

Name	Description	Value
autoscaling.enabled	Enable Horizontal Pod Autoscaler	"false"
autoscaling.minReplicas	Minimum number of replicas	"1"
autoscaling.maxReplicas	Maximum number of replicas	"10"
autoscaling.targets.cpu	Target CPU utilization percentage	"50"

Configuration and installation details

Multi-language Support

This chart is specifically designed to serve multi-language frontends with the following language support:

• Spanish (es): Default language, served at root path / and /es/
• Basque (eu): Available at /eu/
• English (en): Available at /en/

The NGINX configuration automatically handles language routing and serves the appropriate content based on the URL path.

Security Headers

The chart includes configurable security headers through NGINX:

configuration:
  nginx:
    securityHeaders:
      contentSecurityPolicy:
        enabled: true
        value: "default-src 'self'; script-src 'self' 'unsafe-inline';"
      strictTransportSecurity:
        enabled: true
        value: "max-age=31536000; includeSubDomains"

Health Checks

The application includes a built-in health check endpoint at /healthz that returns:

{"status":"UP"}

This endpoint is used for both liveness and readiness probes.

Examples

Basic Installation

helm install iris-frontend htg/infra-iris-myhtg \
  --set image.repository=my-registry/iris-frontend \
  --set image.tag=v1.0.0

Installation with Ingress

# values.yaml
image:
  repository: my-registry/iris-frontend
  tag: v1.0.0

ingress:
  enabled: true
  className: nginx
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-prod
  hosts:
    - host: htg-express.com
      paths:
        - path: /
          pathType: Prefix
  tls:
    - secretName: iris-tls
      hosts:
        - htg-express.com

helm install iris-frontend htg/infra-iris-myhtg -f values.yaml

Installation with Autoscaling

# values.yaml
image:
  repository: my-registry/iris-frontend
  tag: v1.0.0

autoscaling:
  enabled: true
  minReplicas: 2
  maxReplicas: 10
  targets:
    cpu: 70

resources:
  limits:
    cpu: 500m
    memory: 512Mi
  requests:
    cpu: 250m
    memory: 256Mi

Installation with Security Headers

# values.yaml
image:
  repository: my-registry/iris-frontend
  tag: v1.0.0

configuration:
  nginx:
    securityHeaders:
      contentSecurityPolicy:
        enabled: true
        value: "default-src 'self'; script-src 'self' 'unsafe-inline' https://analytics.htg-express.com; style-src 'self' 'unsafe-inline';"
      strictTransportSecurity:
        enabled: true
        value: "max-age=31536000; includeSubDomains; preload"