Resource Configuration

Deployment

• Kubernetes doc: Deployments

• replicas

  • can be omitted

  • defaults to 1

• all three labels must exactly match

• containerPort is for information purposes only and can be omitted

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: my-namespace
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

Service

• Kubernetes doc: Service

• spec.selector.app must reference the label(-s) of the deployment (pod)

• targetPort is the port of the pod

• port is the port of the service

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
  namespace: my-namespace
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: nginx

Secret

PersistentVolumeClaim

IngressRoute

• Traefik doc: Kind: IngressRoute

Middleware

• Traefik doc: Kind: Middleware

Namespace

apiVersion: v1
kind: Namespace
metadata:
  name: my-namespace

ConfigMap

• see NGINX example

Mount a File not a Directory

• see Using subPath

• see https://gist.github.com/petitviolet/d36f33d145d0bbf4b54eb187b79d0244#gistcomment-3417108

          volumeMounts:
            - name: <config_map_name>
              mountPath: /<path>/<filename>
              subPath: <filename>
              readOnly: true