Description

Fetch Auto Scaling Group (ASG) membership and lifecycle details for one or more EC2 instances. The action returns which ASG each instance belongs to, its lifecycle state (e.g., InService, Standby), health status, availability zone, and launch template or launch configuration. This action is useful for:

Building runbooks that need ASG context before scaling or rotating instances
Looking up the ASG name for an instance so later steps can call Describe Auto Scaling Groups, Enter Standby, or Set Instance Protection
Gathering diagnostic information when the incident provides an instance ID (e.g., from alert details)
Chaining with other Auto Scaling actions in a single workflow

Instructions

Inputs

Name	Description
Integration	Select a Workflow Integration or click New AWS Connection to establish a new one.
Instance IDs	One or more EC2 instance IDs to look up (comma-separated). For example, from incident custom details or a prior step.
AWS Region	The AWS region where the instances and Auto Scaling Groups are located. If left blank, the action uses `us-east-1` as the default.

Outputs

Name	Description
Instances	JSON array of Auto Scaling instance records. Each record includes: instanceId, asgName, lifecycleState, healthStatus, availabilityZone, launchTemplate (if present), launchConfigurationName (if present).
Result	Whether the action succeeded: Success or Failed.
Result Summary	Brief description of what the action did or if it failed.
Error	Error message, if the action failed.

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Tips

Field References: Use Field References to pass the instance ID from the incident's custom details (e.g., from your monitoring tool's alert payload) so the workflow works automatically when triggered.

Chaining Actions: Reference the Instances output in later steps (e.g., instances[0].asgName) for Set Instance Protection, Enter Standby, or Terminate Instance in Auto Scaling Group.