http-with-sticky-sessions.yml

---
kind: Service
apiVersion: v1
metadata:
 name: http-lb
 annotations:
 service.beta.kubernetes.io/do-loadbalancer-protocol: "http"
 service.beta.kubernetes.io/do-loadbalancer-sticky-sessions-type: "cookies"
 service.beta.kubernetes.io/do-loadbalancer-sticky-sessions-cookie-name: "example"
 service.beta.kubernetes.io/do-loadbalancer-sticky-sessions-cookie-ttl: "60"
spec:
 type: LoadBalancer
 selector:
 app: nginx-example
 # This is necessary for sticky-sessions to avoid NAT
 # confusion on the way in.
 externalTrafficPolicy: Local
 ports:
 - name: http
 protocol: TCP
 port: 80
 targetPort: 80

---
apiVersion: apps/v1
kind: Deployment
metadata:
 name: nginx-example
spec:
 replicas: 2
 selector:
 matchLabels:
 app: nginx-example
 template:
 metadata:
 labels:
 app: nginx-example
 spec:
 containers:
 - name: nginx
 image: nginx
 ports:
 - containerPort: 80
 protocol: TCP
 # This is necessary for sticky-sessions because it can
 # only consistently route to the same nodes, not pods.
 affinity:
 podAntiAffinity:
 requiredDuringSchedulingIgnoredDuringExecution:
 - labelSelector:
 matchLabels:
 app: nginx-example
 topologyKey: kubernetes.io/hostname