aws.ec2.run_instances

Launch one or more EC2 instances using a CloudConnection UUID.

Overview

Property	Value
Workflow type	Atomic
Library	Base-aws
Version	1.0

Input Schema

Field	Type	Required	Default	Description
connection_uuid	uuid	Yes	—	CloudConnection UUID for the target AWS account.
workflow_run_id	string	No	—	Engine DAG run ID stamped onto child steps.
region	string	No	—	AWS region override.
image_id	string	Yes	—	AMI ID to launch.
instance_type	string	Yes	—	EC2 instance type.
subnet_id	string	No	—	VPC subnet ID to launch into.
security_group_ids	list	No	—	Security group IDs for the instances.
key_name	string	No	—	EC2 key pair name for SSH access.
min_count	integer	No	—	Minimum number of instances to launch.
max_count	integer	No	—	Maximum number of instances to launch.
iam_instance_profile	json	No	—	Provider-native IAM instance profile name or ARN object.
user_data	string	No	—	Boot-time user data script or cloud-init payload.
block_device_mappings	list	No	—	Provider-native block device mappings.
metadata_options	json	No	—	Provider-native IMDS metadata options.
tags	json	No	—	Provider-native TagSpecifications for RunInstances, e.g. [{"ResourceType": "instance", "Tags": [{"Key": "Name", "Value": "web"}]}]. A plain {"Key": "Value"} mapping is rejected by boto3; use aws.ec2.create_instance for key/value tag input.
client_token	string	No	—	Idempotency token for RunInstances. Use this whenever callers may retry after a partial launch.

Output Schema

Field	Type	Required	Default	Description
connection_uuid	uuid	No	—	CloudConnection UUID echoed from input.
region	string	No	—	AWS region used.
instance_ids	list	No	—	EC2 instance IDs launched.
instances	json	No	—	Sanitized provider instance objects without user_data.
failure_reason	string	No	—	Human-readable failure reason.
failed_step	string	No	—	Failed logical step.
failed_layer	json	No	—	Failed DAG layer if engine supplies one.
failed_at_state	string	No	—	State where failure occurred.
error	string	No	—	Error message.
error_type	string	No	—	Error class.
failed_at	string	No	—	ISO failure timestamp.

States

State	Initial	Terminal	Success	Auto-advance	Description
pending	Yes	No	—	execute	—
completed	No	Yes	Yes	—	—
failed	No	Yes	No	—	—

State Diagram

Transitions

From	Action	To	Description
pending	execute	completed	—
* (any state)	fail	failed	—

API Usage

POST /api/workflows/start
Content-Type: application/json

{
  "workflow_type": "aws.ec2.run_instances",
  "initial_data": {
    "connection_uuid": "value",
    "image_id": "value",
    "instance_type": "value"
  }
}