Microsoft.Chaos experiments 2025-01-01

Article
02/11/2025

Bicep resource definition

The experiments resource type can be deployed with operations that target:

Resource groups - See resource group deployment commands

For a list of changed properties in each API version, see change log.

Resource format

To create a Microsoft.Chaos/experiments resource, add the following Bicep to your template.

resource symbolicname 'Microsoft.Chaos/experiments@2025-01-01' = {
  identity: {
    type: 'string'
    userAssignedIdentities: {
      {customized property}: {}
    }
  }
  location: 'string'
  name: 'string'
  properties: {
    selectors: [
      {
        filter: {
          type: 'string'
          // For remaining properties, see ChaosTargetFilter objects
        }
        id: 'string'
        type: 'string'
        // For remaining properties, see ChaosTargetSelector objects
      }
    ]
    steps: [
      {
        branches: [
          {
            actions: [
              {
                name: 'string'
                type: 'string'
                // For remaining properties, see ChaosExperimentAction objects
              }
            ]
            name: 'string'
          }
        ]
        name: 'string'
      }
    ]
  }
  tags: {
    {customized property}: 'string'
  }
}

ChaosTargetFilter objects

Set the type property to specify the type of object.

For Simple, use:

{
  parameters: {
    zones: [
      'string'
    ]
  }
  type: 'Simple'
}

ChaosTargetSelector objects

Set the type property to specify the type of object.

For List, use:

{
  targets: [
    {
      id: 'string'
      type: 'string'
    }
  ]
  type: 'List'
}

For Query, use:

{
  queryString: 'string'
  subscriptionIds: [
    'string'
  ]
  type: 'Query'
}

ChaosExperimentAction objects

Set the type property to specify the type of object.

For continuous, use:

{
  duration: 'string'
  parameters: [
    {
      key: 'string'
      value: 'string'
    }
  ]
  selectorId: 'string'
  type: 'continuous'
}

For delay, use:

{
  duration: 'string'
  type: 'delay'
}

For discrete, use:

{
  parameters: [
    {
      key: 'string'
      value: 'string'
    }
  ]
  selectorId: 'string'
  type: 'discrete'
}

Property Values

ChaosExperimentAction

Name	Description	Value
name	String that represents a Capability URN.	string Constraints: Max length = 2048 (required)
type	Set to 'continuous' for type ContinuousAction. Set to 'delay' for type DelayAction. Set to 'discrete' for type DiscreteAction.	'continuous' 'delay' 'discrete' (required)

ChaosExperimentBranch

Name	Description	Value
actions	List of actions.	ChaosExperimentAction[] (required)
name	String of the branch name.	string Constraints: Min length = 1 (required)

ChaosExperimentStep

Name	Description	Value
branches	List of branches.	ChaosExperimentBranch[] (required)
name	String of the step name.	string Constraints: Min length = 1 (required)

ChaosTargetFilter

Name	Description	Value
type	Set to 'Simple' for type ChaosTargetSimpleFilter.	'Simple' (required)

ChaosTargetListSelector

Name	Description	Value
targets	List of Target references.	TargetReference[] (required)
type	Chaos target selector discriminator type	'List' (required)

ChaosTargetQuerySelector

Name	Description	Value
queryString	Azure Resource Graph (ARG) Query Language query for target resources.	string (required)
subscriptionIds	Subscription id list to scope resource query.	string[] (required)
type	Chaos target selector discriminator type	'Query' (required)

ChaosTargetSelector

Name	Description	Value
filter	Model that represents available filter types that can be applied to a targets list.	ChaosTargetFilter
id	String of the selector ID.	string Constraints: Min length = 1 (required)
type	Set to 'List' for type ChaosTargetListSelector. Set to 'Query' for type ChaosTargetQuerySelector.	'List' 'Query' (required)

ChaosTargetSimpleFilter

Name	Description	Value
parameters	Model that represents the Simple filter parameters.	ChaosTargetSimpleFilterParameters
type	Chaos target filter discriminator type	'Simple' (required)

ChaosTargetSimpleFilterParameters

Name	Description	Value
zones	List of Azure availability zones to filter targets by.	string[]

ContinuousAction

Name	Description	Value
duration	ISO8601 formatted string that represents a duration.	string (required)
parameters	List of key value pairs.	KeyValuePair[] (required)
selectorId	String that represents a selector.	string Constraints: Min length = 1 (required)
type	Chaos experiment action discriminator type	'continuous' (required)

DelayAction

Name	Description	Value
duration	ISO8601 formatted string that represents a duration.	string (required)
type	Chaos experiment action discriminator type	'delay' (required)

DiscreteAction

Name	Description	Value
parameters	List of key value pairs.	KeyValuePair[] (required)
selectorId	String that represents a selector.	string Constraints: Min length = 1 (required)
type	Chaos experiment action discriminator type	'discrete' (required)

ExperimentProperties

Name	Description	Value
selectors	List of selectors.	ChaosTargetSelector[] (required)
steps	List of steps.	ChaosExperimentStep[] (required)

KeyValuePair

Name	Description	Value
key	The name of the setting for the action.	string Constraints: Min length = 1 (required)
value	The value of the setting for the action.	string Constraints: Min length = 1 (required)

ManagedServiceIdentity

Name	Description	Value
type	Type of managed service identity (where both SystemAssigned and UserAssigned types are allowed).	'None' 'SystemAssigned' 'SystemAssigned,UserAssigned' 'UserAssigned' (required)
userAssignedIdentities	The set of user assigned identities associated with the resource. The userAssignedIdentities dictionary keys will be ARM resource ids in the form: '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ManagedIdentity/userAssignedIdentities/{identityName}. The dictionary values can be empty objects ({}) in requests.	UserAssignedIdentities