Kustomization User Deploy

This example shows how to use Kustomize to deploy additional manifests to your cluster.

Directory Structure

your-project/
├── kube.tf
└── extra-manifests/
    ├── kustomization.yaml.tpl
    ├── deployment.yaml
    ├── service.yaml
    └── configmap.yaml

Kustomization Template

Create a kustomization.yaml.tpl file:

kustomization.yaml.tpl

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization

resources:
- deployment.yaml
- service.yaml
- configmap.yaml

configMapGenerator:
- name: app-config
  literals:
    - ENV=production
    - LOG_LEVEL=info

secretGenerator:
- name: app-secrets
  literals:
    - DB_PASSWORD=${db_password}

Deployment Manifest

Create a deployment.yaml file:

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: example-app
  labels:
    app: example-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: example-app
  template:
    metadata:
      labels:
        app: example-app
    spec:
      containers:
      - name: example-app
        image: nginx:latest
        ports:
        - containerPort: 80
        envFrom:
        - configMapRef:
            name: app-config
        - secretRef:
            name: app-secrets

Service Manifest

Create a service.yaml file:

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: example-app
  labels:
    app: example-app
spec:
  selector:
    app: example-app
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
  type: ClusterIP

ConfigMap Manifest

Create a configmap.yaml file:

configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  nginx.conf: |
    events {
      worker_connections 1024;
    }
    http {
      include /etc/nginx/mime.types;
      server {
        listen 80;
        location / {
          root /usr/share/nginx/html;
          index index.html;
        }
      }
    }

Terraform Configuration

In your kube.tf, configure the extra kustomize parameters:

kube.tf

extra_kustomize_parameters = {
  db_password = "supersecretpassword"
}

This example demonstrates how to use Kustomize to deploy a complete application with ConfigMaps, Secrets, Deployments, and Services to your Kube-Hetzner cluster.