Documentation

aws_kms – Perform various KMS management tasks

New in version 2.3.

Synopsis

  • Manage role/user access to a KMS key. Not designed for encrypting/decrypting.

Requirements

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

  • python >= 2.6
  • boto

Parameters

Parameter Choices/Defaults Comments
alias
-
An alias for a key. For safety, even though KMS does not require keys to have an alias, this module expects all new keys to be given an alias to make them easier to manage. Existing keys without an alias may be referred to by key_id. Use aws_kms_facts to find key ids. Required if key_id is not given. Note that passing a key_id and alias will only cause a new alias to be added, an alias will never be renamed. The 'alias/' prefix is optional.

aliases: key_alias
aws_access_key
string
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
string
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
clean_invalid_entries
boolean
    Choices:
  • no
  • yes ←
If adding/removing a role and invalid grantees are found, remove them. These entries will cause an update to fail in all known cases.
Only cleans if changes are being made.
debug_botocore_endpoint_logs
boolean
added in 2.8
    Choices:
  • no ←
  • yes
Use a botocore.endpoint logger to parse the unique (rather than total) "resource:action" API calls made during a task, outputing the set to the resource_actions key in the task results. Use the aws_resource_action callback to output to total list made during a playbook. The ANSIBLE_DEBUG_BOTOCORE_LOGS environment variable may also be used.
description
-
added in 2.8
A description of the CMK. Use a description that helps you decide whether the CMK is appropriate for a task.
ec2_url
string
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.
enabled
boolean
added in 2.8
    Choices:
  • no
  • yes ←
Whether or not a key is enabled
grant_types
-
List of grants to give to user/role. Likely "role,role grant" or "role,role grant,admin". Required when mode=grant.
grants
-
added in 2.8
A list of grants to apply to the key. Each item must contain grantee_principal. Each item can optionally contain retiring_principal, operations, constraints, name.
Valid operations are Decrypt, Encrypt, GenerateDataKey, GenerateDataKeyWithoutPlaintext, ReEncryptFrom, ReEncryptTo, CreateGrant, RetireGrant, DescribeKey, Verify and Sign
Constraints is a dict containing encryption_context_subset or encryption_context_equals, either or both being a dict specifying an encryption context match. See https://docs.aws.amazon.com/kms/latest/APIReference/API_GrantConstraints.html
grantee_principal and retiring_principal must be ARNs
key_id
-
Key ID or ARN of the key. One of alias or key_id are required.

aliases: key_arn
mode
-
    Choices:
  • grant ←
  • deny
Grant or deny access.
policy
-
added in 2.8
policy to apply to the KMS key
profile
string
Uses a boto profile. Only works with boto >= 2.24.0.
purge_grants
boolean
added in 2.8
    Choices:
  • no ←
  • yes
Whether the grants argument should cause grants not in the list to be removed
purge_tags
boolean
added in 2.8
    Choices:
  • no ←
  • yes
Whether the tags argument should cause tags not in the list to be removed
region
string
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
-
ARN of role to allow/deny access. One of role_name or role_arn are required.
role_name
-
Role to allow/deny access. One of role_name or role_arn are required.
security_token
string
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
state
-
added in 2.8
    Choices:
  • present ←
  • absent
Whether a key should be present or absent. Note that making an existing key absent only schedules a key for deletion. Passing a key that is scheduled for deletion with state present will cancel key deletion.
tags
-
added in 2.8
A dictionary of tags to apply to a key.
validate_certs
boolean
    Choices:
  • no
  • yes ←
When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

Notes

Note

  • 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: grant user-style access to production secrets
  aws_kms:
  args:
    mode: grant
    alias: "alias/my_production_secrets"
    role_name: "prod-appServerRole-1R5AQG2BSEL6L"
    grant_types: "role,role grant"
- name: remove access to production secrets from role
  aws_kms:
  args:
    mode: deny
    alias: "alias/my_production_secrets"
    role_name: "prod-appServerRole-1R5AQG2BSEL6L"

# Create a new KMS key
- aws_kms:
    alias: mykey
    tags:
      Name: myKey
      Purpose: protect_stuff

# Update previous key with more tags
- aws_kms:
    alias: mykey
    tags:
      Name: myKey
      Purpose: protect_stuff
      Owner: security_team

# Update a known key with grants allowing an instance with the billing-prod IAM profile
# to decrypt data encrypted with the environment: production, application: billing
# encryption context
- aws_kms:
    key_id: abcd1234-abcd-1234-5678-ef1234567890
    grants:
      - name: billing_prod
        grantee_principal: arn:aws:iam::1234567890123:role/billing_prod
        constraints:
          encryption_context_equals:
            environment: production
            application: billing
        operations:
          - Decrypt
          - RetireGrant

Return Values

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

Key Returned Description
aliases
list
always
list of aliases associated with the key

Sample:
['aws/acm', 'aws/ebs']
aws_account_id
string
always
The AWS Account ID that the key belongs to

Sample:
1234567890123
changes_needed
dictionary
always
grant types that would be changed/were changed.

Sample:
{'role': 'add', 'role grant': 'add'}
creation_date
string
always
Date of creation of the key

Sample:
2017-04-18T15:12:08.551000+10:00
description
string
always
Description of the key

Sample:
My Key for Protecting important stuff
enabled
string
always
Whether the key is enabled. True if KeyState is true.

grants
complex
always
list of grants associated with a key

  constraints
dictionary
always
Constraints on the encryption context that the grant allows. See https://docs.aws.amazon.com/kms/latest/APIReference/API_GrantConstraints.html for further details

Sample:
{'encryption_context_equals': {'aws:lambda:_function_arn': 'arn:aws:lambda:ap-southeast-2:012345678912:function:xyz'}}
  creation_date
string
always
Date of creation of the grant

Sample:
2017-04-18 05:12:08
  grant_id
string
always
The unique ID for the grant

Sample:
abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234
  grantee_principal
string
always
The principal that receives the grant's permissions

Sample:
arn:aws:sts::0123456789012:assumed-role/lambda_xyz/xyz
  issuing_account
string
always
The AWS account under which the grant was issued

Sample:
arn:aws:iam::01234567890:root
  key_id
string
always
The key ARN to which the grant applies.

Sample:
arn:aws:kms:ap-southeast-2:123456789012:key/abcd1234-abcd-1234-5678-ef1234567890
  name
string
always
The friendly name that identifies the grant

Sample:
xyz
  operations
list
always
The list of operations permitted by the grant

Sample:
['Decrypt', 'RetireGrant']
  retiring_principal
string
always
The principal that can retire the grant

Sample:
arn:aws:sts::0123456789012:assumed-role/lambda_xyz/xyz
had_invalid_entries
boolean
always
there are invalid (non-ARN) entries in the KMS entry. These don't count as a change, but will be removed if any changes are being made.

key_arn
string
always
ARN of key

Sample:
arn:aws:kms:ap-southeast-2:123456789012:key/abcd1234-abcd-1234-5678-ef1234567890
key_id
string
always
ID of key

Sample:
abcd1234-abcd-1234-5678-ef1234567890
key_state
string
always
The state of the key

Sample:
PendingDeletion
key_usage
string
always
The cryptographic operations for which you can use the key.

Sample:
ENCRYPT_DECRYPT
origin
string
always
The source of the key's key material. When this value is AWS_KMS, AWS KMS created the key material. When this value is EXTERNAL, the key material was imported or the CMK lacks key material.

Sample:
AWS_KMS
policies
list
always
list of policy documents for the keys. Empty when access is denied even if there are policies.

Sample:
{'Version': '2012-10-17', 'Id': 'auto-ebs-2', 'Statement': [{'Sid': 'Allow access through EBS for all principals in the account that are authorized to use EBS', 'Effect': 'Allow', 'Principal': {'AWS': '*'}, 'Action': ['kms:Encrypt', 'kms:Decrypt', 'kms:ReEncrypt*', 'kms:GenerateDataKey*', 'kms:CreateGrant', 'kms:DescribeKey'], 'Resource': '*', 'Condition': {'StringEquals': {'kms:CallerAccount': '111111111111', 'kms:ViaService': 'ec2.ap-southeast-2.amazonaws.com'}}}, {'Sid': 'Allow direct access to key metadata to the account', 'Effect': 'Allow', 'Principal': {'AWS': 'arn:aws:iam::111111111111:root'}, 'Action': ['kms:Describe*', 'kms:Get*', 'kms:List*', 'kms:RevokeGrant'], 'Resource': '*'}]}
tags
dictionary
always
dictionary of tags applied to the key

Sample:
{'Name': 'myKey', 'Purpose': 'protecting_stuff'}


Status

Authors

  • Ted Timmons (@tedder)
  • Will Thames (@willthames)

Hint

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