Simulate Azure Faults

AzureChaos can help you simulate fault scenarios on the specified Azure instance. Currently, AzureChaos supports the following fault types:

  • VM Stop: stops the specified VM instance.
  • Disk Detach: uninstalls the data disk from the specified VM instance.

To easily connect to the Azure cluster, you can create a Kubernetes Secret file to store the authentication information in advance.

A Secret file sample is as follows:

  • name means the Kubernetes Secret object.
  • namespace means the namespace of the Kubernetes Secret object.
  • client_id stores Application (client) ID of Azure App registrations.
  • client_secret stores Application (client) secret value of Azure App registrations.
  • tenant_id stores Directory (tenant) ID of Azure App registrations. For client_id and client_secret, please refer to Confidential client application.
Make sure that App registrations in the Secret file has been added as a contributor or owner to the access control (IAM) of the VM instance. :::

Before you create an experiment using Chaos Dashboard, make sure the following requirements are met:

  1. Chaos Dashboard is installed.

  2. Chaos Dashboard can be accessed via kubectl port-forward:

    1.  kubectl port-forward -n chaos-testing svc/chaos-dashboard 2333:2333

    Then you can access the dashboard via http://localhost:2333 in your browser.

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  2. Fill out the experiment information, and specify the experiment scope and the scheduled experiment duration.

  3. Submit the experiment information.

  1. Write the experiment configuration to the azurechaos-vm-stop.yaml file, as shown below:

    Based on this configuration example, Chaos Mesh will inject the vm-stop fault into the specified VM instance so that the VM instance will be unavailable in 5 minutes.

    For more information about stopping VM instances, refer to .

  2. After the configuration file is prepared, use kubectl to create an experiment:

    1. kubectl apply -f azurechaos-vm-stop.yaml

  1. Based on this configuration example, Chaos Mesh will inject vm-restart fault into the specified VM instance so that the VM instance will be restarted.

    For more information about restarting the VM instance, refer to the Azure documentation - Restart a VM.

  2. After the configuration file is prepared, use kubectl to create an experiment:

    1. kubectl apply -f azurechaos-vm-restart.yaml

  1. Write the experiment configuration to the azurechaos-disk-detach.yaml file:

    Based on this configuration example, Chaos Mesh will inject a disk-detach fault into the specified VM instance so that the VM instance is detached from the specified data disk within 5 minutes.

    For more information about detaching Azure date disk, refer to the .

  2. After the configuration file is prepared, use kubectl to create an experiment:

    The following table shows the fields in the YAML configuration file.