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Add support per-account exclusions for Config Recorder via environmen… #30

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Add support per-account exclusions for Config Recorder via environmen… #30

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39c791e
Add support per-account exclusions for Config Recorder via environmen…
menesjav Jul 25, 2025
0ebcca1
Update SPECIAL_EXCLUSION_RESOURCE_LIST to admit exclusion resource list
menesjav Jul 25, 2025
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13 changes: 11 additions & 2 deletions ct_configrecorder_override_consumer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -102,8 +102,17 @@ def assume_role(account_id, role='AWSControlTowerExecution'):


CONFIG_RECORDER_EXCLUSION_RESOURCE_STRING = os.getenv('CONFIG_RECORDER_OVERRIDE_EXCLUDED_RESOURCE_LIST')
CONFIG_RECORDER_EXCLUSION_RESOURCE_LIST = CONFIG_RECORDER_EXCLUSION_RESOURCE_STRING.split(
',') if CONFIG_RECORDER_EXCLUSION_RESOURCE_STRING != '' else []
CONFIG_RECORDER_EXCLUSION_RESOURCE_LIST = CONFIG_RECORDER_EXCLUSION_RESOURCE_STRING.split(',') if CONFIG_RECORDER_EXCLUSION_RESOURCE_STRING else []

SPECIAL_EXCLUDED_ACCOUNTS_STRING = os.getenv('CONFIG_RECORDER_SPECIAL_EXCLUDED_ACCOUNTS', '')
SPECIAL_EXCLUDED_ACCOUNTS = [x.strip() for x in SPECIAL_EXCLUDED_ACCOUNTS_STRING.split(',') if x.strip()]

SPECIAL_EXCLUSION_RESOURCE_STRING = os.getenv('CONFIG_RECORDER_OVERRIDE_SPECIAL_EXCLUDED_RESOURCE_LIST', '')
SPECIAL_EXCLUSION_RESOURCE_LIST = SPECIAL_EXCLUSION_RESOURCE_STRING.split(',') if SPECIAL_EXCLUSION_RESOURCE_STRING else []

if account_id in SPECIAL_EXCLUDED_ACCOUNTS:
CONFIG_RECORDER_EXCLUSION_RESOURCE_LIST = SPECIAL_EXCLUSION_RESOURCE_LIST

CONFIG_RECORDER_DEFAULT_RECORDING_FREQUENCY = os.getenv('CONFIG_RECORDER_DEFAULT_RECORDING_FREQUENCY')

#remove any resource type from daily list that are in exclision list
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12 changes: 12 additions & 0 deletions template.yaml
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Expand Up @@ -32,6 +32,16 @@ Parameters:
- CONTINUOUS
- DAILY

ConfigRecorderSpecialExcludedAccounts:
Description: Comma-separated list of accounts to apply special exclusions
Default: "111111111111,222222222222,333333333333,444444444444,555555555555"
Type: String

ConfigRecorderOverrideSpecialExcludedResourceList:
Description: Comma-separated list of resource types to exclude for the special accounts
Default: "AWS::EC2::Volume,AWS::EC2::NetworkInterface"
Type: String

CloudFormationVersion:
Type: String
Default: 1
Expand Down Expand Up @@ -118,6 +128,8 @@ Resources:
CONFIG_RECORDER_OVERRIDE_EXCLUDED_RESOURCE_LIST: !Ref ConfigRecorderExcludedResourceTypes
CONFIG_RECORDER_DEFAULT_RECORDING_FREQUENCY: !Ref ConfigRecorderDefaultRecordingFrequency
CONTROL_TOWER_HOME_REGION: !Ref 'AWS::Region'
CONFIG_RECORDER_SPECIAL_EXCLUDED_ACCOUNTS: !Ref ConfigRecorderSpecialExcludedAccounts
CONFIG_RECORDER_OVERRIDE_SPECIAL_EXCLUDED_RESOURCE_LIST: !Ref ConfigRecorderOverrideSpecialExcludedResourceList

ConsumerLambdaEventSourceMapping:
Type: AWS::Lambda::EventSourceMapping
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