5.5Common Experiment Patterns

Network Chaos: Simulating Latency

# network-latency-experiment.yaml
apiVersion: litmuschaos.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: pod-network-latency
  namespace: litmus
spec:
  definition:
    scope: Namespaced
    env:
      - name: TOTAL_CHAOS_DURATION
        value: "120"
      - name: NETWORK_LATENCY
        value: "500"         # 500ms additional latency
      - name: JITTER
        value: "100"         # +/- 100ms jitter
      - name: DESTINATION_IPS
        value: ""            # all destinations
      - name: DESTINATION_HOSTS
        value: "payment-service.production.svc.cluster.local"

DNS Chaos: Simulating Resolution Failures

# dns-chaos-experiment.yaml
apiVersion: litmuschaos.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: pod-dns-error
  namespace: litmus
spec:
  definition:
    scope: Namespaced
    env:
      - name: TOTAL_CHAOS_DURATION
        value: "60"
      - name: TARGET_HOSTNAMES
        value: "external-api.vendor.com"
      - name: CHAOS_TYPE
        value: "error"     # return NXDOMAIN for target hostnames

Disk Fill: Simulating Storage Pressure

# disk-fill-experiment.yaml
apiVersion: litmuschaos.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: disk-fill
  namespace: litmus
spec:
  definition:
    scope: Namespaced
    env:
      - name: TOTAL_CHAOS_DURATION
        value: "120"
      - name: FILL_PERCENTAGE
        value: "90"         # fill disk to 90%
      - name: CONTAINER_PATH
        value: "/var/log"   # target the log directory