AWS::FIS::ExperimentTemplate

Specifies an experiment template.

An experiment template includes the following components:

• Targets: A target can be a specific resource in your AWS environment, or one or more resources that match criteria that you specify, for example, resources that have specific tags.

• Actions: The actions to carry out on the target. You can specify multiple actions, the duration of each action, and when to start each action during an experiment.

• Stop conditions: If a stop condition is triggered while an experiment is running, the experiment is automatically stopped. You can define a stop condition as a CloudWatch alarm.

For more information, see Experiment templates in the AWS Fault Injection Simulator User Guide.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Type" : "AWS::FIS::ExperimentTemplate",
  "Properties" : {
      "Actions" : {Key: Value, ...},
      "Description" : String,
      "LogConfiguration" : ExperimentTemplateLogConfiguration,
      "RoleArn" : String,
      "StopConditions" : [ ExperimentTemplateStopCondition, ... ],
      "Tags" : {Key: Value, ...},
      "Targets" : {Key: Value, ...}
    }
}

YAML

Type: AWS::FIS::ExperimentTemplate
Properties: 
  Actions: 
    Key: Value
  Description: String
  LogConfiguration: 
    ExperimentTemplateLogConfiguration
  RoleArn: String
  StopConditions: 
    - ExperimentTemplateStopCondition
  Tags: 
    Key: Value
  Targets: 
    Key: Value

Properties

Actions

The actions for the experiment.

Required: No

Type: Map of ExperimentTemplateAction

Update requires: No interruption

Description

A description for the experiment template.

Required: Yes

Type: String

Maximum: 512

Pattern: [\s\S]+

Update requires: No interruption

LogConfiguration

The configuration for experiment logging.

Required: No

Type: ExperimentTemplateLogConfiguration

Update requires: No interruption

RoleArn

The Amazon Resource Name (ARN) of an IAM role that grants the AWS FIS service permission to perform service actions on your behalf.

Required: Yes

Type: String

Minimum: 20

Maximum: 2048

Pattern: [\S]+

Update requires: No interruption

StopConditions

The stop conditions.

Required: Yes

Type: List of ExperimentTemplateStopCondition

Update requires: No interruption

Tags

The tags to apply to the experiment template.

Required: Yes

Type: Map of String

Update requires: Replacement

Targets

The targets for the experiment.

Required: Yes

Type: Map of ExperimentTemplateTarget

Update requires: No interruption

Return values

Ref

When you pass the logical ID of this resource to the intrinsic Reffunction, Refreturns the experiment template ID.

For more information about using the Reffunction, see Ref.

Fn::GetAtt

The Fn::GetAttintrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAttintrinsic function, see Fn::GetAtt.

Id

The ID of the experiment template.

Examples

The following example creates an experiment template that stops and starts one instance with the tag env=prod, chosen at random.

YAML

Resources:
  ExperimentTemplate:
    Type: 'AWS::FIS::ExperimentTemplate'
    Properties: 
      Description: 'stop an instance based on a tag'
      Actions: 
        stopInstances:
          ActionId: 'aws:ec2:stop-instances'
          Parameters: 
            startInstancesAfterDuration: 'PT2M'
          Targets:
            Instances: oneRandomInstance
      Targets: 
        oneRandomInstance:
          ResourceTags:
            'env': 'prod'
          ResourceType: 'aws:ec2:instance'
          SelectionMode: 'COUNT(1)'
      StopConditions:
        - Source: 'none'
      Tags: 
        Name: 'fisStopInstances'
      RoleArn: !GetAtt FISRole.Arn
  FISRole:
    Type: 'AWS::IAM::Role'
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement: 
          - Effect: Allow
            Principal:
              Service: 'fis.amazonaws.com'
            Action: 'sts:AssumeRole'
      Policies:
        - PolicyName: 'FISRoleEC2Actions'
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - 'ec2:RebootInstances'
                  - 'ec2:StopInstances'
                  - 'ec2:StartInstances'
                  - 'ec2:TerminateInstances'
                Resource: 'arn:aws:ec2:*:*:instance/*'

JSON

{
  "Resources": {
    "ExperimentTemplate": {
      "Type": "AWS::FIS::ExperimentTemplate", 
      "DeletionPolicy": "Retain",
      "Properties": {
        "Description": "stop an instance based on a tag",
        "Actions": {
          "stopInstances": {
            "ActionId": "aws:ec2:stop-instances",
            "Parameters": {
              "startInstancesAfterDuration": "PT2M"
            },
            "Targets": {
              "Instances": "oneRandomInstance"
            }
          }
        },
        "Targets": {
          "oneRandomInstance": {
            "ResourceTags": { 
              "env": "prod" 
            },
            "ResourceType": "aws:ec2:instance",
            "SelectionMode": "COUNT(1)"
          }
        },
        "StopConditions": [
          {
            "Source": "none"
          }
        ],
        "Tags": {
          "Name": "fisStopInstancesJson"
        },
        "RoleArn": {
          "Fn::GetAtt": ["FISRole", "Arn"]
        }
      }
    },
    "FISRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
                "Effect": "Allow",
                "Principal": {
                  "Service": "fis.amazonaws.com"
                },
                "Action": "sts:AssumeRole"
            }
          ]
        },
        "Policies": [
          {
            "PolicyName": "FISRoleEC2Actions",
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "ec2:RebootInstances",
                    "ec2:StopInstances",
                    "ec2:StartInstances",
                    "ec2:TerminateInstances"
                  ],
                  "Resource": "arn:aws:ec2:*:*:instance/*"
                }
              ]
            }
          }
        ]
      }
    }
  }
}