Cloud-Native Microservices With Kubernetes - 2nd Edition

When Deployment and StatefulSet are Not Enough

Imagine you have a platform that sniffs network traffic on every node in your Kubernetes cluster for security monitoring purposes. At t0, you have 3 nodes in your cluster, so you deploy 3 instances of your network sniffer application:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: network-sniffer
spec:
  replicas: 3
  selector:
    matchLabels:
      app: network-sniffer
  template:
    metadata