Documentation

cloudformation - Create or delete an AWS CloudFormation stack

Synopsis

  • Launches or updates an AWS CloudFormation stack and waits for it complete.

Requirements

The below requirements are needed on the host that executes this module.

  • boto
  • boto3
  • botocore>=1.4.57
  • python >= 2.6

Parameters

Parameter Choices/Defaults Comments
aws_access_key
AWS access key. If not set then the value of the AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY or EC2_ACCESS_KEY environment variable is used.

aliases: ec2_access_key, access_key
aws_secret_key
AWS secret key. If not set then the value of the AWS_SECRET_ACCESS_KEY, AWS_SECRET_KEY, or EC2_SECRET_KEY environment variable is used.

aliases: ec2_secret_key, secret_key
changeset_name
(added in 2.4)
Name given to the changeset when creating a changeset, only used when create_changeset is true. By default a name prefixed with Ansible-STACKNAME is generated based on input parameters. See the AWS Change Sets docs http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-changesets.html
create_changeset
(added in 2.4)
Default:
no
If stack already exists create a changeset instead of directly applying changes. See the AWS Change Sets docs http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-changesets.html. WARNING: if the stack does not exist, it will be created without changeset. If the state is absent, the stack will be deleted immediately with no changeset.
create_timeout
(added in 2.6)
Default:
None
The amount of time (in minutes) that can pass before the stack status becomes CREATE_FAILED
disable_rollback
bool
    Choices:
  • no ←
  • yes
If a stacks fails to form, rollback will remove the stack
ec2_url
Url to use to connect to EC2 or your Eucalyptus cloud (by default the module will use EC2 endpoints). Ignored for modules where region is required. Must be specified for all other modules if region is not used. If not set then the value of the EC2_URL environment variable, if any, is used.
events_limit
(added in 2.7)
Default:
200
Maximum number of CloudFormation events to fetch from a stack when creating or updating it.
notification_arns
(added in 2.0)
The Simple Notification Service (SNS) topic ARNs to publish stack related events.
profile
(added in 1.6)
Uses a boto profile. Only works with boto >= 2.24.0.
region
The AWS region to use. If not specified then the value of the AWS_REGION or EC2_REGION environment variable, if any, is used. See http://docs.aws.amazon.com/general/latest/gr/rande.html#ec2_region

aliases: aws_region, ec2_region
role_arn
(added in 2.3)
The role that AWS CloudFormation assumes to create the stack. See the AWS CloudFormation Service Role docs http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-servicerole.html
security_token
(added in 1.6)
AWS STS security token. If not set then the value of the AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN environment variable is used.

aliases: access_token
stack_name
required
name of the cloudformation stack
stack_policy
(added in 1.9)
the path of the cloudformation stack policy. A policy cannot be removed once placed, but it can be modified. (for instance, [allow all updates](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html#d0e9051)
state
    Choices:
  • present ←
  • absent
If state is "present", stack will be created. If state is "present" and if stack exists and template has changed, it will be updated. If state is "absent", stack will be removed.
tags
(added in 1.4)
Dictionary of tags to associate with stack and its resources during stack creation. Can be updated later, updating tags removes previous entries.
template
The local path of the cloudformation template.
This must be the full path to the file, relative to the working directory. If using roles this may look like "roles/cloudformation/files/cloudformation-example.json".
If 'state' is 'present' and the stack does not exist yet, either 'template', 'template_body' or 'template_url' must be specified (but only one of them). If 'state' is 'present', the stack does exist, and neither 'template', 'template_body' nor 'template_url' are specified, the previous template will be reused.
template_body
(added in 2.5)
Template body. Use this to pass in the actual body of the Cloudformation template.
If 'state' is 'present' and the stack does not exist yet, either 'template', 'template_body' or 'template_url' must be specified (but only one of them). If 'state' ispresent, the stack does exist, and neither 'template', 'template_body' nor 'template_url' are specified, the previous template will be reused.
template_format
(added in 2.0)
    Choices:
  • json ←
  • yaml
(deprecated) For local templates, allows specification of json or yaml format. Templates are now passed raw to CloudFormation regardless of format. This parameter is ignored since Ansible 2.3.
template_parameters Default:
{}
A list of hashes of all the template variables for the stack. The value can be a string or a dict.
Dict can be used to set additional template parameter attributes like UsePreviousValue (see example).
template_url
(added in 2.0)
Location of file containing the template body. The URL must point to a template (max size 307,200 bytes) located in an S3 bucket in the same region as the stack.
If 'state' is 'present' and the stack does not exist yet, either 'template', 'template_body' or 'template_url' must be specified (but only one of them). If 'state' ispresent, the stack does exist, and neither 'template', 'template_body' nor 'template_url' are specified, the previous template will be reused.
termination_protection
(added in 2.5)
enable or disable termination protection on the stack. Only works with botocore >= 1.7.18.
validate_certs
bool

(added in 1.5)
    Choices:
  • no
  • yes ←
When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

Notes

Note

  • As of version 2.3, migrated to boto3 to enable new features. To match existing behavior, YAML parsing is done in the module, not given to AWS as YAML. This will change (in fact, it may change before 2.3 is out).
  • If parameters are not set within the module, the following environment variables can be used in decreasing order of precedence AWS_URL or EC2_URL, AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY or EC2_ACCESS_KEY, AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY or EC2_SECRET_KEY, AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN, AWS_REGION or EC2_REGION
  • Ansible uses the boto configuration file (typically ~/.boto) if no credentials are provided. See https://boto.readthedocs.io/en/latest/boto_config_tut.html
  • AWS_REGION or EC2_REGION can be typically be used to specify the AWS region, when required, but this can also be configured in the boto config file

Examples

- name: create a cloudformation stack
  cloudformation:
    stack_name: "ansible-cloudformation"
    state: "present"
    region: "us-east-1"
    disable_rollback: true
    template: "files/cloudformation-example.json"
    template_parameters:
      KeyName: "jmartin"
      DiskType: "ephemeral"
      InstanceType: "m1.small"
      ClusterSize: 3
    tags:
      Stack: "ansible-cloudformation"

# Basic role example
- name: create a stack, specify role that cloudformation assumes
  cloudformation:
    stack_name: "ansible-cloudformation"
    state: "present"
    region: "us-east-1"
    disable_rollback: true
    template: "roles/cloudformation/files/cloudformation-example.json"
    role_arn: 'arn:aws:iam::123456789012:role/cloudformation-iam-role'

- name: delete a stack
  cloudformation:
    stack_name: "ansible-cloudformation-old"
    state: "absent"

# Create a stack, pass in template from a URL, disable rollback if stack creation fails,
# pass in some parameters to the template, provide tags for resources created
- name: create a stack, pass in the template via an URL
  cloudformation:
    stack_name: "ansible-cloudformation"
    state: present
    region: us-east-1
    disable_rollback: true
    template_url: https://s3.amazonaws.com/my-bucket/cloudformation.template
    template_parameters:
      KeyName: jmartin
      DiskType: ephemeral
      InstanceType: m1.small
      ClusterSize: 3
    tags:
      Stack: ansible-cloudformation

# Create a stack, passing in template body using lookup of Jinja2 template, disable rollback if stack creation fails,
# pass in some parameters to the template, provide tags for resources created
- name: create a stack, pass in the template body via lookup template
  cloudformation:
    stack_name: "ansible-cloudformation"
    state: present
    region: us-east-1
    disable_rollback: true
    template_body: "{{ lookup('template', 'cloudformation.j2') }}"
    template_parameters:
      KeyName: jmartin
      DiskType: ephemeral
      InstanceType: m1.small
      ClusterSize: 3
    tags:
      Stack: ansible-cloudformation

# Pass a template parameter which uses Cloudformation's UsePreviousValue attribute
# When use_previous_value is set to True, the given value will be ignored and
# Cloudformation will use the value from a previously submitted template.
# If use_previous_value is set to False (default) the given value is used.
- cloudformation:
    stack_name: "ansible-cloudformation"
    state: "present"
    region: "us-east-1"
    template: "files/cloudformation-example.json"
    template_parameters:
      DBSnapshotIdentifier:
        use_previous_value: True
        value: arn:aws:rds:es-east-1:000000000000:snapshot:rds:my-db-snapshot
      DBName:
        use_previous_value: True
    tags:
      Stack: "ansible-cloudformation"

# Enable termination protection on a stack.
# If the stack already exists, this will update its termination protection
- name: enable termination protection during stack creation
  cloudformation:
    stack_name: my_stack
    state: present
    template_url: https://s3.amazonaws.com/my-bucket/cloudformation.template
    termination_protection: yes

# Configure TimeoutInMinutes before the stack status becomes CREATE_FAILED
# In this case, if disable_rollback is not set or is set to false, the stack will be rolled back.
- name: enable termination protection during stack creation
  cloudformation:
    stack_name: my_stack
    state: present
    template_url: https://s3.amazonaws.com/my-bucket/cloudformation.template
    create_timeout: 5

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
events
list
always
Most recent events in Cloudformation's event log. This may be from a previous run in some cases.

Sample:
['StackEvent AWS::CloudFormation::Stack stackname UPDATE_COMPLETE', 'StackEvent AWS::CloudFormation::Stack stackname UPDATE_COMPLETE_CLEANUP_IN_PROGRESS']
log
list
always
Debugging logs. Useful when modifying or finding an error.

Sample:
['updating stack']
stack_outputs
dict
state == present
A key:value dictionary of all the stack outputs currently defined. If there are no stack outputs, it is an empty dictionary.

Sample:
{'MySg': 'AnsibleModuleTestYAML-CFTestSg-C8UVS567B6NS'}
stack_resources
list
state == present
AWS stack resources and their status. List of dictionaries, one dict per resource.

Sample:
[{'status': 'UPDATE_COMPLETE', 'physical_resource_id': 'cloudformation2-CFTestSg-16UQ4CYQ57O9F', 'logical_resource_id': 'CFTestSg', 'status_reason': None, 'last_updated_time': '2016-10-11T19:40:14.979000+00:00', 'resource_type': 'AWS::EC2::SecurityGroup'}]


Status

This module is flagged as stableinterface which means that the maintainers for this module guarantee that no backward incompatible interface changes will be made.

Maintenance

This module is flagged as core which means that it is maintained by the Ansible Core Team. See Module Maintenance & Support for more info.

For a list of other modules that are also maintained by the Ansible Core Team, see here.

Support

For more information about Red Hat’s support of this module, please refer to this Knowledge Base article

Author

  • James S. Martin (@jsmartin)

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