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ARM template samples for experiments in Azure Chaos Studio

  • Άρθρο

This article includes sample Azure Resource Manager templates (ARM templates) to create a chaos experiment in Azure Chaos Studio. Each sample includes a template file and a parameters file with sample values to provide to the template.

Create an experiment (sample)

In this sample, we create a chaos experiment with a single target resource and a single CPU pressure fault. You can modify the experiment by referencing our REST API and fault library.

Deploying templates

Once you've reviewed the template and parameter files, learn how to deploy them into your Azure subscription with the Deploy resources with ARM templates and Azure portal article.

Template file

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "experimentName": {
      "type": "string",
      "defaultValue": "simple-experiment",
      "metadata": {
        "description": "A name for the experiment."
      }
    },
    "location": {
      "type": "string",
      "defaultValue": "[resourceGroup().location]",
      "metadata": {
        "description": "A region where the experiment will be deployed."
      }
    },
    "chaosTargetResourceId": {
      "type": "string",
      "metadata": {
        "description": "Resource ID of the chaos target. This is the full resource ID of the resource being targeted plus the target proxy resource."
      }
    }
  },
  "functions": [],
  "variables": {},
  "resources": [
    {
      "type": "Microsoft.Chaos/experiments",
      "apiVersion": "2024-01-01",
      "name": "[parameters('experimentName')]",
      "location": "[parameters('location')]",
      "identity": {
        "type": "SystemAssigned"
      },
      "properties": {
        "selectors": [
          {
            "id": "Selector1",
            "type": "List",
            "targets": [
              {
                "type": "ChaosTarget",
                "id": "[parameters('chaosTargetResourceId')]"
              }
            ]
          }
        ],
        "steps": [
          {
            "name": "Step1",
            "branches": [
              {
                "name": "Branch1",
                "actions": [
                  {
                    "duration": "PT10M",
                    "name": "urn:csci:microsoft:agent:cpuPressure/1.0",
                    "parameters": [
                      {
                        "key": "pressureLevel",
                        "value": "95"
                      }
                    ],
                    "selectorId": "Selector1",
                    "type": "continuous"
                  }
                ]
              }
            ]
          }
        ]
      }
    }
  ],
  "outputs": {}
}

Parameter file

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
      "experimentName": {
        "value": "my-first-experiment"
      },
      "location": {
        "value": "eastus"
      },
      "chaosTargetResourceId": {
        "value": "/subscriptions/<subscription-id>/resourceGroups/<rg-name>/providers/Microsoft.DocumentDB/databaseAccounts/<account-name>/providers/Microsoft.Chaos/targets/microsoft-cosmosdb"
      }
  }
}

Next steps