Before we start exploring the various capabilities built into Kubernetes for scaling and updates, we will need a new example environment. We are going to use a variation of our previous container image with a blue background (refer to the v0.1 and v0.2 (side by side) image, later in this chapter, for a comparison). We have the following code in the pod-scaling-controller.yaml file:
apiVersion: v1
kind: ReplicationController
metadata:
name: node-js-scale
labels:
name: node-js-scale
spec:
replicas: 1
selector:
name: node-js-scale
template:
metadata:
labels:
name: node-js-scale
spec:
containers:
- name: node-js-scale
image: jonbaier/pod-scaling:0.1
ports:
- containerPort: 80
Save the following code as pod-scaling-service.yaml file:
apiVersion: v1
kind: Service
metadata:
name: node-js-scale
labels:
name: node-js-scale
spec:
type: LoadBalancer
sessionAffinity: ClientIP...