AWS Cloud Control Common Filters

Filters

event

Filter a resource based on an event.

properties:
  default:
    type: object
  key:
    type: string
  op:
    enum:
    - eq
    - equal
    - ne
    - not-equal
    - gt
    - greater-than
    - ge
    - gte
    - le
    - lte
    - lt
    - less-than
    - glob
    - regex
    - regex-case
    - in
    - ni
    - not-in
    - contains
    - difference
    - intersect
  type:
    enum:
    - event
  value:
    oneOf:
    - type: array
    - type: string
    - type: boolean
    - type: number
    - type: 'null'
  value_from:
    additionalProperties: 'False'
    properties:
      expr:
        oneOf:
        - type: integer
        - type: string
      format:
        enum:
        - csv
        - json
        - txt
        - csv2dict
      url:
        type: string
    required:
    - url
    type: object
  value_regex:
    type: string
  value_type:
    enum:
    - age
    - integer
    - expiration
    - normalize
    - size
    - cidr
    - cidr_size
    - swap
    - resource_count
    - expr
    - unique_size
    - date
    - version
required:
- type

marked-for-op

Filter resources for tag specified future action

Filters resources by a ‘maid_status’ tag which specifies a future date for an action.

The filter parses the tag values looking for an ‘op@date’ string. The date is parsed and compared to do today’s date, the filter succeeds if today’s date is gte to the target date.

The optional ‘skew’ parameter provides for incrementing today’s date a number of days into the future. An example use case might be sending a final notice email a few days before terminating an instance, or snapshotting a volume prior to deletion.

The optional ‘skew_hours’ parameter provides for incrementing the current time a number of hours into the future.

Optionally, the ‘tz’ parameter can get used to specify the timezone in which to interpret the clock (default value is ‘utc’)

policies:
  - name: ec2-stop-marked
    resource: ec2
    filters:
      - type: marked-for-op
        # The default tag used is maid_status
        # but that is configurable
        tag: custodian_status
        op: stop
        # Another optional tag is skew
        tz: utc
    actions:
      - type: stop
properties:
  op:
    type: string
  skew:
    minimum: 0
    type: number
  skew_hours:
    minimum: 0
    type: number
  tag:
    type: string
  type:
    enum:
    - marked-for-op
  tz:
    type: string
required:
- type

reduce

Generic reduce filter to group, sort, and limit your resources.

This example will select the longest running instance from each ASG, then randomly choose 10% of those, maxing at 15 total instances.

example

- name: oldest-instance-by-asg
  resource: ec2
  filters:
    - "tag:aws:autoscaling:groupName": present
    - type: reduce
      group-by: "tag:aws:autoscaling:groupName"
      sort-by: "LaunchTime"
      order: asc
      limit: 1

Or you might want to randomly select a 10 percent of your resources, but no more than 15.

example

- name: random-selection
  resource: ec2
  filters:
    - type: reduce
      order: randomize
      limit: 15
      limit-percent: 10
properties:
  discard:
    minimum: 0
    type: number
  discard-percent:
    maximum: 100
    minimum: 0
    type: number
  group-by:
    oneOf:
    - type: string
    - key:
        type: string
      type: object
      value_regex: string
      value_type:
        enum:
        - string
        - number
        - date
  limit:
    minimum: 0
    type: number
  limit-percent:
    maximum: 100
    minimum: 0
    type: number
  null-order:
    enum:
    - first
    - last
  order:
    enum:
    - asc
    - desc
    - reverse
    - randomize
  sort-by:
    oneOf:
    - type: string
    - key:
        type: string
      type: object
      value_regex: string
      value_type:
        enum:
        - string
        - number
        - date
  type:
    enum:
    - reduce
required:
- type

tag-count

Simplify tag counting..

ie. these two blocks are equivalent

- filters:
    - type: value
      op: gte
      count: 8

- filters:
    - type: tag-count
      count: 8
properties:
  count:
    minimum: 0
    type: integer
  op:
    enum:
    - eq
    - equal
    - ne
    - not-equal
    - gt
    - greater-than
    - ge
    - gte
    - le
    - lte
    - lt
    - less-than
    - glob
    - regex
    - regex-case
    - in
    - ni
    - not-in
    - contains
    - difference
    - intersect
  type:
    enum:
    - tag-count
required:
- type

value

Generic value filter using jmespath

properties:
  default:
    type: object
  key:
    type: string
  op:
    enum:
    - eq
    - equal
    - ne
    - not-equal
    - gt
    - greater-than
    - ge
    - gte
    - le
    - lte
    - lt
    - less-than
    - glob
    - regex
    - regex-case
    - in
    - ni
    - not-in
    - contains
    - difference
    - intersect
  type:
    enum:
    - value
  value:
    oneOf:
    - type: array
    - type: string
    - type: boolean
    - type: number
    - type: 'null'
  value_from:
    additionalProperties: 'False'
    properties:
      expr:
        oneOf:
        - type: integer
        - type: string
      format:
        enum:
        - csv
        - json
        - txt
        - csv2dict
      url:
        type: string
    required:
    - url
    type: object
  value_regex:
    type: string
  value_type:
    enum:
    - age
    - integer
    - expiration
    - normalize
    - size
    - cidr
    - cidr_size
    - swap
    - resource_count
    - expr
    - unique_size
    - date
    - version
required:
- type