demo.yaml

# Unless explicitly stated otherwise all files in this repository are licensed
# under the Apache License Version 2.0.
# This product includes software developed at Datadog (https://www.datadoghq.com/).
# Copyright 2024 Datadog, Inc.
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: demo
  namespace: chaos-demo
spec:
  # not specifying storage class aims to rely on default storage class instead
  # this intent to avoid forcing people to install longhorn by default if they do not aim to test disk throttling capabilities
  # longhorn storage provider being a significant payload for a local setup
  # storageClassName: longhorn
  # this will require to delete the PVC/PV and re-create them if longhorn is installed afterwards though
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 3Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-nginx
  namespace: chaos-demo
  labels:
    app: demo-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-nginx
  template:
    metadata:
      labels:
        app: demo-nginx
    spec:
      containers:
        - name: nginx
          image: nginx:1.27
          livenessProbe:
            httpGet:
              path: /
              port: 80
            initialDelaySeconds: 3
            periodSeconds: 3
          readinessProbe:
            httpGet:
              path: /
              port: 80
          resources:
            limits:
              memory: 32Mi
              cpu: 10m
            requests:
              memory: 32Mi
              cpu: 10m
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-curl
  namespace: chaos-demo
  labels:
    app: demo-curl
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-curl
  template:
    metadata:
      annotations:
        app.kubernetes.io/component: client
      labels:
        app: demo-curl
#        chaos.datadoghq.com/disrupt-on-init: "true" # uncomment this and run `kubectl -n chaos-demo apply -f examples/demo.yaml`, for testing the examples/on_init.yaml disruption
    spec:
      containers:
        - name: cpu-stress # jump into pod and run `kill -s TERM 7` to confirm re-start apply cpu reinjection
          image: alpine/curl:8.9.1
          command: [/bin/sh, -c]
          args:
            - ee(){exit 1}; trap 'ee' TERM; tail -f /dev/null
          imagePullPolicy: IfNotPresent
          resources:
            limits:
              memory: 32Mi
              cpu: 1500m
            requests:
              memory: 32Mi
              cpu: 1500m
        - name: curl
          image: alpine/curl:8.9.1
          command: [/bin/sh]
          args:
            - -c
            - while true; do time curl -vvv --connect-timeout 15 http://demo.chaos-demo.svc.cluster.local:8080; sleep 1; done
          resources:
            limits:
              memory: 32Mi
              cpu: 10m
            requests:
              memory: 32Mi
              cpu: 10m
        - name: curl-remote
          image: alpine/curl:8.9.1
          command: [/bin/sh]
          args:
            - -c
            - while true; do time curl --connect-timeout 15 -vvv https://www.example.com; sleep 1; done
          resources:
            limits:
              memory: 32Mi
              cpu: 10m
            requests:
              memory: 32Mi
              cpu: 10m
        - name: read-file
          image: ubuntu:focal-20240918
          command: ["/bin/bash"]
          args:
            - -c
            - "echo 'create file to read from: /mnt/data/disk-read-file' && dd if=/dev/zero of=/mnt/data/disk-read-file bs=10k count=1; while true; do time dd if=/mnt/data/disk-read-file of=/dev/null iflag=direct; sleep 1; done"
          volumeMounts:
            - mountPath: /mnt/data
              name: data
          resources:
            limits:
              memory: 32Mi
              cpu: 100m
            requests:
              memory: 32Mi
              cpu: 100m
        - name: write-file
          image: ubuntu:focal-20240918
          command: ["/bin/bash"]
          args:
            - -c
            - while true; do time dd if=/dev/zero of=/mnt/data/disk-write-file bs=10k count=1 oflag=direct; sleep 1; done
          volumeMounts:
            - mountPath: /mnt/data
              name: data
          resources:
            limits:
              memory: 32Mi
              cpu: 100m
            requests:
              memory: 32Mi
              cpu: 100m
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: demo
---
apiVersion: v1
kind: Service
metadata:
  name: demo
  namespace: chaos-demo
spec:
  ports:
    - name: regular-port
      port: 8080
      targetPort: 80
      protocol: TCP
    - name: other
      port: 8081
      targetPort: 80
      protocol: TCP
  selector:
    app: demo-nginx