ApplyCloudFormationInitOptions

class aws_cdk.aws_autoscaling.ApplyCloudFormationInitOptions(*, config_sets=None, embed_fingerprint=None, ignore_failures=None, include_role=None, include_url=None, print_log=None)

Bases: object

Options for applying CloudFormation init to an instance or instance group.

Parameters:

  • config_sets (Optional[Sequence[str]]) – ConfigSet to activate. Default: [‘default’]

  • embed_fingerprint (Optional[bool]) – Force instance replacement by embedding a config fingerprint. If true (the default), a hash of the config will be embedded into the UserData, so that if the config changes, the UserData changes and instances will be replaced (given an UpdatePolicy has been configured on the AutoScalingGroup). If false, no such hash will be embedded, and if the CloudFormation Init config changes nothing will happen to the running instances. If a config update introduces errors, you will not notice until after the CloudFormation deployment successfully finishes and the next instance fails to launch. Default: true

  • ignore_failures (Optional[bool]) – Don’t fail the instance creation when cfn-init fails. You can use this to prevent CloudFormation from rolling back when instances fail to start up, to help in debugging. Default: false

  • include_role (Optional[bool]) – Include –role argument when running cfn-init and cfn-signal commands. This will be the IAM instance profile attached to the EC2 instance Default: false

  • include_url (Optional[bool]) – Include –url argument when running cfn-init and cfn-signal commands. This will be the cloudformation endpoint in the deployed region e.g. https://cloudformation.us-east-1.amazonaws.com Default: false

  • print_log (Optional[bool]) – Print the results of running cfn-init to the Instance System Log. By default, the output of running cfn-init is written to a log file on the instance. Set this to true to print it to the System Log (visible from the EC2 Console), false to not print it. (Be aware that the system log is refreshed at certain points in time of the instance life cycle, and successful execution may not always show up). Default: true

ExampleMetadata:

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_autoscaling as autoscaling

apply_cloud_formation_init_options = autoscaling.ApplyCloudFormationInitOptions(
    config_sets=["configSets"],
    embed_fingerprint=False,
    ignore_failures=False,
    include_role=False,
    include_url=False,
    print_log=False
)

Attributes

config_sets

ConfigSet to activate.

Default:

[‘default’]

embed_fingerprint

Force instance replacement by embedding a config fingerprint.

If true (the default), a hash of the config will be embedded into the UserData, so that if the config changes, the UserData changes and instances will be replaced (given an UpdatePolicy has been configured on the AutoScalingGroup).

If false, no such hash will be embedded, and if the CloudFormation Init config changes nothing will happen to the running instances. If a config update introduces errors, you will not notice until after the CloudFormation deployment successfully finishes and the next instance fails to launch.

Default:

true

ignore_failures

Don’t fail the instance creation when cfn-init fails.

You can use this to prevent CloudFormation from rolling back when instances fail to start up, to help in debugging.

Default:

false

include_role

Include –role argument when running cfn-init and cfn-signal commands.

This will be the IAM instance profile attached to the EC2 instance

Default:

false

include_url

Include –url argument when running cfn-init and cfn-signal commands.

This will be the cloudformation endpoint in the deployed region e.g. https://cloudformation.us-east-1.amazonaws.com

Default:

false

print_log

Print the results of running cfn-init to the Instance System Log.

By default, the output of running cfn-init is written to a log file on the instance. Set this to true to print it to the System Log (visible from the EC2 Console), false to not print it.

(Be aware that the system log is refreshed at certain points in time of the instance life cycle, and successful execution may not always show up).

Default:

true