nginx-ingress-controller-with-eks

Customers who's using Nginx Ingress Controller ask if features like cookie-based sticky session is supported on Amazon EKS. This repo walks you through how to enable cookie-based sticky session with Nginx Ingress Controller on Amazon EKS.

1. Create an EKS cluster in a specific region

eksctl create cluster --region ap-east-1

2. Deploy Nginx Ingress Controller

kubectl apply -f ./nginx-ingress-controller.yaml

3. Deploy the sample app deployment and service

kubectl apply -f ./deployment.yaml && kubectl apply -f ./svc.yaml

4. Deploy the ingress resource

kubectl apply -f ./ingress-session-affinity.yaml

Inspect the cookie-related settings in the following annotations:

nginx.ingress.kubernetes.io/affinity: "cookie"
nginx.ingress.kubernetes.io/affinity-mode: "persistent"
nginx.ingress.kubernetes.io/session-cookie-name: "stickounet"
nginx.ingress.kubernetes.io/session-cookie-expires: "172800"
nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"

4. Verify that the sticky session is working

for i in {0..5}; do curl --cookie cookie.txt --cookie-jar cookie.txt http://ababd4e58fc4b4cde933c52ebd007efc-e3ff84bdc1aef180.elb.ap-east-1.amazonaws.com/; echo ""; done

The output of the above command should return something like this(showing that each curl request with the same cookie value is served by the same pod):

Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!
Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!
Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!
Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!
Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!
Hello "what-is-my-pod-deployment-666d84dbf5-zmhcr"!