Scaling NodeJS with K8S

Imagine you have a bunch of NodeJS scripts.

You want to make sure that these scripts are running reliably and you can monitor them.

In this repo:

• http-server is a TypeScript version of a simple HTTP server
• dockerhub has Terraform scripts to publish http-server to Dockerhub
• k8s creates Kubernetes cluster with the HTTP server, Elasticsearch and Kibana

Why:

• Distribute Docker images instead of copying files manually
• Kubernetes uses liveness and readiness probes to check on the health of NodeJS scripts
• You now have centralised logging with Elasticsearch and Kibana
• You can use Kubernetes to gradually rollout new versions