Actions for AWS FIS - AWS Fault Injection Simulator

Actions for AWS FIS

An action is the fault injection activity that you run on a target using AWS Fault Injection Simulator (AWS FIS). AWS FIS provides preconfigured actions for specific types of targets across AWS services. You add actions to an experiment template, which you then use to run experiments.

Action identifiers

Each AWS FIS action has an identifier with the following format:

aws:service-name:action-type

For example, the following action stops the target Amazon EC2 instances:

aws:ec2:stop-instances

For a complete list of actions, see the AWS FIS actions reference.

Action parameters

Some AWS FIS actions have additional parameters that are specific to the action. These parameters are used to pass information to AWS FIS when the action is run.

AWS FIS supports custom fault types using the aws:ssm:send-command action, which uses the SSM Agent and an SSM command document to create the fault condition on the targeted instances. The aws:ssm:send-command action includes a documentArn parameter that takes the Amazon Resource Name (ARN) of an SSM document as a value. You specify values for parameters when you add the action to your experiment template.

For more information about specifying parameters for the aws:ssm:send-command action, see Use the aws:ssm:send-command action.

Where possible, you can input a rollback configuration (also referred to as a post action) within the action parameters. A post action returns the target to the state that it was in before the action was run. The post action runs after the time specified in the action duration. Not all actions can support post actions. For example, if the action terminates an Amazon EC2 instance, you cannot recover the instance after it has been terminated.

Action targets

An action runs on the target resources that you specify. After you define a target, you can specify its name when you define an action.

AWS FIS actions support the following resource types for action targets:

  • Clusters – Amazon ECS clusters

  • DBInstances – Amazon Aurora DB clusters

  • Instances – Amazon EC2 instances

  • Nodegroups – Amazon EKS node groups

  • Roles – IAM roles

  • SpotInstances – Amazon EC2 Spot Instances

  • Tasks – Amazon ECS tasks

For example action definitions, see Action set.