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Version: 1.2.4

AwsChaos Experiment

This document introduces how to create AwsChaos experiments.

AwsChaos can help you inject faults into the specified AWS Instance, specifically ec2-stop, ec2-restart and detach-volume.

  • Ec2 Stop action periodically stops the specified ec2 instance.

  • Ec2 Restart action periodically reboots the specified ec2 instance.

  • Detach Volume action detaches the storage volume from the specified ec2 instance.

Secret file​

In order to facilitate the connection to the AWS cluster, you can first create a kubernetes secret file to store related information (such as access key id).

Below is a sample secret file:

apiVersion: v1
kind: Secret
metadata:
  name: cloud-key-secret
  namespace: chaos-testing
type: Opaque
stringData:
  aws_access_key_id: your-aws-access-key-id
  aws_secret_access_key: your-aws-secret-access-key
  • name defines the name of kubernetes secret.
  • namespace defines the namespace of kubernetes secret.
  • aws_access_key_id stores your AWS access key id.
  • aws_secret_access_key stores your AWS secret access key.

ec2-stop configuration file​

Below is a sample ec2-stop configuration file:

apiVersion: chaos-mesh.org/v1alpha1
kind: AwsChaos
metadata:
  name: ec2-stop-example
  namespace: chaos-testing
spec:
  action: ec2-stop
  secretName: 'cloud-key-secret'
  awsRegion: 'us-east-2'
  ec2Instance: 'your-ec2-instance-id'
  duration: '5m'
  scheduler:
    cron: '@every 10m'

For more details about stopping ec2 instance, see docs.

For a detailed description of each field in the configuration template, see Fields description.

ec2-restart configuration file​

Below is a sample ec2-restart configuration file:

apiVersion: chaos-mesh.org/v1alpha1
kind: AwsChaos
metadata:
  name: ec2-restart-example
  namespace: chaos-testing
spec:
  action: ec2-restart
  secretName: 'cloud-key-secret'
  awsRegion: 'us-east-2'
  ec2Instance: 'your-ec2-instance-id'
  duration: '5m'
  scheduler:
    cron: '@every 10m'

For more details about rebooting ec2 instance, see docs.

For a detailed description of each field in the configuration template, see Fields description.

detach-volume configuration file​

Below is a sample detach-volume configuration file:

apiVersion: chaos-mesh.org/v1alpha1
kind: AwsChaos
metadata:
  name: ec2-detach-volume-example
  namespace: chaos-testing
spec:
  action: ec2-stop
  secretName: 'cloud-key-secret'
  awsRegion: 'us-east-2'
  ec2Instance: 'your-ec2-instance-id'
  volumeID: 'your-volume-id'
  deviceName: '/dev/sdf'
  duration: '5m'
  scheduler:
    cron: '@every 10m'

For more details about detaching an Amazon EBS volume, see docs.

For a detailed description of each field in the configuration template, see Fields description.

Fields description​

  • action defines the specific chaos action for the AWS instance. Supported action: ec2-stop / ec2-restart / detach-volume.
  • secretName defines the kubernetes secret name used to store AWS information.
  • awsRegion defines the AWS region.
  • ec2Instance indicates the ID of the ec2 instance.
  • volumeID is needed in detach-volume action. It indicates the ID of the EBS volume.
  • deviceName is needed in detach-volume action. It indicates the name of the device.
  • duration defines the duration for each chaos experiment.
  • scheduler defines the scheduler rules for the running time of the chaos experiment. For more rule information, see robfig/cron.