deployment.yml

apiVersion: v1
kind: Deployment
metadata:
  name: devops
  labels:
    env: prod
spec:
  replicas: 10
  # Update strategy used by this deployment
  strategy:
    rollingUpdate:
      # Maximum number of pods created during an update  
      # over the desired number. Here the max is 12.
      maxSurge: 20%
      # Number of pods that can be unavailble during an update
      maxUnavailable: 0
  selector:
    # Pods with this label will be part of the deployment
    matchLabels:
      app: devops
  template:
    metadata:
      name: devops
      # Make sure this matches the matchLabels
      labels:
        app: devops
    spec:
      # Define a configMap as a volume
      volumes:
        - name: config-volume
          configMap:
            name: my-config
      containers:
        - image: tfogo/devops
          name: devops
          ports:
            - containerPort: 80
          # Mount configMap volume
          volumeMounts:
            - name: config-volume
              mountPath: /config
          # Set environment variables from a secret
          env:
            - name: SECRET_TOKEN
              valueFrom:
                secretKeyRef:
                  name: mysecret
                  key: token

pod-with-secrets.yml

apiVersion: v1
kind: Pod
metadata:
  name: devops
  labels:
    env: prod
spec:
  # Volumes for the pod. Can be many different types.
  # Here we use the emptyDir volume type.
  volumes:
    - name: cache-volume
      emptyDir: {}
  containers:
    - image: tfogo/devops
      name: devops
      # Where to mount volumes in the container
      volumeMounts:
        - mountPath: /cache
          name: cache-volume
      # What ports to expose on the container
      ports:
        - containerPort: 80
          name: http
          protocol: TCP
      resources:
        # Request these minimum resources
        requests:
          cpu: 500m
          memory: 128Mi
      # Define how K8s tests for the pod's liveness
      livenessProbe:
        httpGet:
          path: /healthy
          port: 80
        initialDelaySeconds: 5
        timeoutSeconds: 1
        periodSeconds: 10
        failureThreshold: 3

pod.yml

apiVersion: v1
kind: Pod
metadata:
  name: devops
  labels:
    env: prod
spec:
  # Volumes for the pod. Can be many different types.
  # Here we use the emptyDir volume type.
  volumes:
    - name: cache-volume
      emptyDir: {}
  containers:
    - image: tfogo/devops
      name: devops
      # Where to mount volumes in the container
      volumeMounts:
        - mountPath: /cache
          name: cache-volume
      # What ports to expose on the container
      ports:
        - containerPort: 80
          name: http
          protocol: TCP
      resources:
        # Request these minimum resources
        requests:
          cpu: 500m
          memory: 128Mi
      # Define how K8s tests for the pod's liveness
      livenessProbe:
        httpGet:
          path: /healthy
          port: 80
        initialDelaySeconds: 5
        timeoutSeconds: 1
        periodSeconds: 10
        failureThreshold: 3

service.yml

kind: Service
apiVersion: v1
metadata:
  name: devops
spec:
  selector:
    # Pods with this label will be routed to by this service
    app: devops
  ports:
  - protocol: TCP
    # Port exposed on the Service Cluster IP
    port: 80
    # Exposed port on the Pod
    targetPort: 80
  # Service type can be ClusterIP (default), 
  # NodePort, LoadBalancer, or ExternalName
  type: NodePort