Nginx container to load-balance websocket servers in Kubernetes
This container is designed to be run in a pod in Kubernetes to proxy websocket requests to a socket server.
You can provide following environment variables to customize it.
# set env var to dns name of the socket server SOCKET_SERVER=socket-service
This is supposed to work with the service exposed via AWS Elastic Loadbalancer. Make sure you enable proxy protocol in your ELB.
You should run this as a Kubernetes service. Remember to set
sessionAffinity: ClientIP to both, this nginx and upstream socket service.
apiVersion: v1 kind: Service metadata: name: nginx-socket labels: run: nginx-socket spec: type: NodePort ports: - port: 80 protocol: TCP nodePort: 31110 selector: run: nginx-socket sessionAffinity: ClientIP --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: nginx-socket spec: replicas: 3 template: metadata: labels: run: nginx-socket spec: containers: - name: nginx-socket image: apsops/kube-nginx-websocket:v0.3 ports: - containerPort: 8080 env: - name: SOCKET_SERVER value: socket-service
I plan to make this more modular and reliable.
Feel free to open issues and pull requests for bug fixes or features.
This project is licensed under the MIT License. Refer LICENSE for details.