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EC2  >  Operations  >  start_instances

start_instances

Operation

start_instances async 

start_instances(input: StartInstancesInput, plugins: list[Plugin] | None = None) -> StartInstancesOutput

Starts an Amazon EBS-backed instance that you've previously stopped.

Instances that use Amazon EBS volumes as their root devices can be quickly stopped and started. When an instance is stopped, the compute resources are released and you are not billed for instance usage. However, your root partition Amazon EBS volume remains and continues to persist your data, and you are charged for Amazon EBS volume usage. You can restart your instance at any time. Every time you start your instance, Amazon EC2 charges a one-minute minimum for instance usage, and thereafter charges per second for instance usage.

Before stopping an instance, make sure it is in a state from which it can be restarted. Stopping an instance does not preserve data stored in RAM.

Performing this operation on an instance that uses an instance store as its root device returns an error.

If you attempt to start a T3 instance with host tenancy and the unlimited CPU credit option, the request fails. The unlimited CPU credit option is not supported on Dedicated Hosts. Before you start the instance, either change its CPU credit option to standard, or change its tenancy to default or dedicated.

For more information, see Stop and start Amazon EC2 instances in the Amazon EC2 User Guide.

Parameters:

Name Type Description Default
input StartInstancesInput

An instance of StartInstancesInput.

 required
plugins list[Plugin] | None

A list of callables that modify the configuration dynamically. Changes made by these plugins only apply for the duration of the operation execution and will not affect any other operation invocations.

 None

Returns:

Type Description
StartInstancesOutput

An instance of StartInstancesOutput.

Input

StartInstancesInput dataclass

Bases: _SerdeShape

Dataclass for StartInstancesInput structure.

Attributes

additional_info class-attribute instance-attribute 
additional_info: str | None = ...

Reserved.

dry_run class-attribute instance-attribute 
dry_run: bool | None = ...

Checks whether you have the required permissions for the operation, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

instance_ids class-attribute instance-attribute 
instance_ids: list[str] | None = ...

The IDs of the instances.

Output

StartInstancesOutput dataclass

Bases: _SerdeShape

Dataclass for StartInstancesOutput structure.

Attributes

response_metadata class-attribute instance-attribute 
response_metadata: ResponseMetadata = ...

Metadata about the response that produced this output. Use this to recover the request identifiers a service's support team needs in order to investigate a call. Members of the metadata are individually optional.

starting_instances class-attribute instance-attribute 
starting_instances: list[InstanceStateChange] | None = ...

Information about the started instances.