get-event-selectors¶

Description¶

Describes the settings for the event selectors that you configured for your trail. The information returned for your event selectors includes the following:

If your event selector includes read-only events, write-only events, or all events. This applies to both management events and data events.
If your event selector includes management events.
If your event selector includes data events, the resources on which you are logging data events.

For more information about logging management and data events, see the following topics in the CloudTrail User Guide :

Synopsis¶

  get-event-selectors
--trail-name <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options¶

--trail-name (string)

Specifies the name of the trail or trail ARN. If you specify a trail name, the string must meet the following requirements:

Contain only ASCII letters (a-z, A-Z), numbers (0-9), periods (.), underscores (_), or dashes (-)

Start with a letter or number, and end with a letter or number

Be between 3 and 128 characters

Have no adjacent periods, underscores or dashes. Names like my-_namespace and my--namespace are not valid.

Not be in IP address format (for example, 192.168.5.4)

If you specify a trail ARN, it must be in the format:

arn:aws:cloudtrail:us-east-2:123456789012:trail/MyTrail

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

json
text
table
yaml
yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

base64
raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To view the event selector settings for a trail

The following get-event-selectors command returns the settings for Trail1:

aws cloudtrail get-event-selectors --trail-name Trail1

Output:

{
  "EventSelectors": [
      {
          "IncludeManagementEvents": true,
          "DataResources": [],
          "ReadWriteType": "All"
      }
  ],
  "TrailARN": "arn:aws:cloudtrail:us-east-1:123456789012:trail/Trail1"
}

Output¶

TrailARN -> (string)

The specified trail ARN that has the event selectors.

EventSelectors -> (list)

The event selectors that are configured for the trail.

(structure)

Use event selectors to further specify the management and data event settings for your trail. By default, trails created without specific event selectors will be configured to log all read and write management events, and no data events. When an event occurs in your account, CloudTrail evaluates the event selector for all trails. For each trail, if the event matches any event selector, the trail processes and logs the event. If the event doesn’t match any event selector, the trail doesn’t log the event.

You can configure up to five event selectors for a trail.

You cannot apply both event selectors and advanced event selectors to a trail.

ReadWriteType -> (string)

Specify if you want your trail to log read-only events, write-only events, or all. For example, the EC2 GetConsoleOutput is a read-only API operation and RunInstances is a write-only API operation.

By default, the value is All .

IncludeManagementEvents -> (boolean)

Specify if you want your event selector to include management events for your trail.

For more information, see Management Events in the CloudTrail User Guide .

By default, the value is true .

The first copy of management events is free. You are charged for additional copies of management events that you are logging on any subsequent trail in the same region. For more information about CloudTrail pricing, see CloudTrail Pricing .

DataResources -> (list)

CloudTrail supports data event logging for Amazon S3 objects, Lambda functions, and Amazon DynamoDB tables with basic event selectors. You can specify up to 250 resources for an individual event selector, but the total number of data resources cannot exceed 250 across all event selectors in a trail. This limit does not apply if you configure resource logging for all data events.

For more information, see Data Events and Limits in CloudTrail in the CloudTrail User Guide .

(structure)

The Amazon S3 buckets, Lambda functions, or Amazon DynamoDB tables that you specify in your event selectors for your trail to log data events. Data events provide information about the resource operations performed on or within a resource itself. These are also known as data plane operations. You can specify up to 250 data resources for a trail.

Note

The total number of allowed data resources is 250. This number can be distributed between 1 and 5 event selectors, but the total cannot exceed 250 across all selectors.

If you are using advanced event selectors, the maximum total number of values for all conditions, across all advanced event selectors for the trail, is 500.

The following example demonstrates how logging works when you configure logging of all data events for an S3 bucket named bucket-1 . In this example, the CloudTrail user specified an empty prefix, and the option to log both Read and Write data events.

A user uploads an image file to bucket-1 .

The PutObject API operation is an Amazon S3 object-level API. It is recorded as a data event in CloudTrail. Because the CloudTrail user specified an S3 bucket with an empty prefix, events that occur on any object in that bucket are logged. The trail processes and logs the event.

A user uploads an object to an Amazon S3 bucket named arn:aws:s3:::bucket-2 .

The PutObject API operation occurred for an object in an S3 bucket that the CloudTrail user didn’t specify for the trail. The trail doesn’t log the event.

The following example demonstrates how logging works when you configure logging of Lambda data events for a Lambda function named MyLambdaFunction , but not for all Lambda functions.

A user runs a script that includes a call to the MyLambdaFunction function and the MyOtherLambdaFunction function.

The Invoke API operation on MyLambdaFunction is an Lambda API. It is recorded as a data event in CloudTrail. Because the CloudTrail user specified logging data events for MyLambdaFunction , any invocations of that function are logged. The trail processes and logs the event.

The Invoke API operation on MyOtherLambdaFunction is an Lambda API. Because the CloudTrail user did not specify logging data events for all Lambda functions, the Invoke operation for MyOtherLambdaFunction does not match the function specified for the trail. The trail doesn’t log the event.

Type -> (string)

The resource type in which you want to log data events. You can specify the following basic event selector resource types:

AWS::S3::Object

AWS::Lambda::Function

AWS::DynamoDB::Table

The following resource types are also available through advanced event selectors. Basic event selector resource types are valid in advanced event selectors, but advanced event selector resource types are not valid in basic event selectors. For more information, see AdvancedFieldSelector$Field .

AWS::S3Outposts::Object

AWS::ManagedBlockchain::Node

AWS::S3ObjectLambda::AccessPoint

AWS::EC2::Snapshot

AWS::S3::AccessPoint

AWS::DynamoDB::Stream

AWS::Glue::Table

Values -> (list)

An array of Amazon Resource Name (ARN) strings or partial ARN strings for the specified objects.

To log data events for all objects in all S3 buckets in your Amazon Web Services account, specify the prefix as arn:aws:s3 .

Note

This also enables logging of data event activity performed by any user or role in your Amazon Web Services account, even if that activity is performed on a bucket that belongs to another Amazon Web Services account.

To log data events for all objects in an S3 bucket, specify the bucket and an empty object prefix such as arn:aws:s3:::bucket-1/ . The trail logs data events for all objects in this S3 bucket.

To log data events for specific objects, specify the S3 bucket and object prefix such as arn:aws:s3:::bucket-1/example-images . The trail logs data events for objects in this S3 bucket that match the prefix.

To log data events for all Lambda functions in your Amazon Web Services account, specify the prefix as arn:aws:lambda .

Note

This also enables logging of Invoke activity performed by any user or role in your Amazon Web Services account, even if that activity is performed on a function that belongs to another Amazon Web Services account.

To log data events for a specific Lambda function, specify the function ARN.

Note

Lambda function ARNs are exact. For example, if you specify a function ARN arn:aws:lambda:us-west-2:111111111111:function:helloworld , data events will only be logged for arn:aws:lambda:us-west-2:111111111111:function:helloworld . They will not be logged for arn:aws:lambda:us-west-2:111111111111:function:helloworld2 .

To log data events for all DynamoDB tables in your Amazon Web Services account, specify the prefix as arn:aws:dynamodb .

(string)

ExcludeManagementEventSources -> (list)

An optional list of service event sources from which you do not want management events to be logged on your trail. In this release, the list can be empty (disables the filter), or it can filter out Key Management Service or Amazon RDS Data API events by containing kms.amazonaws.com or rdsdata.amazonaws.com . By default, ExcludeManagementEventSources is empty, and KMS and Amazon RDS Data API events are logged to your trail. You can exclude management event sources only in regions that support the event source.

(string)

AdvancedEventSelectors -> (list)

The advanced event selectors that are configured for the trail.

(structure)

Advanced event selectors let you create fine-grained selectors for the following CloudTrail event record ﬁelds. They help you control costs by logging only those events that are important to you. For more information about advanced event selectors, see Logging data events for trails in the CloudTrail User Guide .

readOnly

eventSource

eventName

eventCategory

resources.type

resources.ARN

You cannot apply both event selectors and advanced event selectors to a trail.

Name -> (string)

An optional, descriptive name for an advanced event selector, such as “Log data events for only two S3 buckets”.

FieldSelectors -> (list)

Contains all selector statements in an advanced event selector.

(structure)

A single selector statement in an advanced event selector.

Field -> (string)

A field in an event record on which to filter events to be logged. Supported fields include readOnly , eventCategory , eventSource (for management events), eventName , resources.type , and resources.ARN .

**readOnly ** - Optional. Can be set to Equals a value of true or false . If you do not add this field, CloudTrail logs both read and write events. A value of true logs only read events. A value of false logs only write events.

**eventSource ** - For filtering management events only. This can be set only to NotEquals kms.amazonaws.com .

**eventName ** - Can use any operator. You can use it to ﬁlter in or ﬁlter out any data event logged to CloudTrail, such as PutBucket or GetSnapshotBlock . You can have multiple values for this ﬁeld, separated by commas.

**eventCategory ** - This is required. It must be set to Equals , and the value must be Management or Data .

**resources.type ** - This ﬁeld is required. resources.type can only use the Equals operator, and the value can be one of the following:

AWS::S3::Object

AWS::Lambda::Function

AWS::DynamoDB::Table

AWS::S3Outposts::Object

AWS::ManagedBlockchain::Node

AWS::S3ObjectLambda::AccessPoint

AWS::EC2::Snapshot

AWS::S3::AccessPoint

AWS::DynamoDB::Stream

AWS::Glue::Table

You can have only one resources.type ﬁeld per selector. To log data events on more than one resource type, add another selector.

**resources.ARN ** - You can use any operator with resources.ARN , but if you use Equals or NotEquals , the value must exactly match the ARN of a valid resource of the type you’ve speciﬁed in the template as the value of resources.type. For example, if resources.type equals AWS::S3::Object , the ARN must be in one of the following formats. To log all data events for all objects in a specific S3 bucket, use the StartsWith operator, and include only the bucket ARN as the matching value. The trailing slash is intentional; do not exclude it. Replace the text between less than and greater than symbols (<>) with resource-specific information.

arn:<partition>:s3:::<bucket_name>/

arn:<partition>:s3:::<bucket_name>/<object_path>/

When resources.type equals AWS::S3::AccessPoint , and the operator is set to Equals or NotEquals , the ARN must be in one of the following formats. To log events on all objects in an S3 access point, we recommend that you use only the access point ARN, don’t include the object path, and use the StartsWith or NotStartsWith operators.

arn:<partition>:s3:<region>:<account_ID>:accesspoint/<access_point_name>

arn:<partition>:s3:<region>:<account_ID>:accesspoint/<access_point_name>/object/<object_path>

When resources.type equals AWS::Lambda::Function , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:lambda:<region>:<account_ID>:function:<function_name>

When resources.type equals AWS::DynamoDB::Table , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:dynamodb:<region>:<account_ID>:table/<table_name>

When resources.type equals AWS::S3Outposts::Object , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:s3-outposts:<region>:<account_ID>:<object_path>

When resources.type equals AWS::ManagedBlockchain::Node , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:managedblockchain:<region>:<account_ID>:nodes/<node_ID>

When resources.type equals AWS::S3ObjectLambda::AccessPoint , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:s3-object-lambda:<region>:<account_ID>:accesspoint/<access_point_name>

When resources.type equals AWS::EC2::Snapshot , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:ec2:<region>::snapshot/<snapshot_ID>

When resources.type equals AWS::DynamoDB::Stream , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:dynamodb:<region>:<account_ID>:table/<table_name>/stream/<date_time>

When resources.type equals AWS::Glue::Table , and the operator is set to Equals or NotEquals , the ARN must be in the following format:

arn:<partition>:glue:<region>:<account_ID>:table/<database_name>/<table_name>

Equals -> (list)

An operator that includes events that match the exact value of the event record field specified as the value of Field . This is the only valid operator that you can use with the readOnly , eventCategory , and resources.type fields.

(string)

StartsWith -> (list)

An operator that includes events that match the first few characters of the event record field specified as the value of Field .

(string)

EndsWith -> (list)

An operator that includes events that match the last few characters of the event record field specified as the value of Field .

(string)

NotEquals -> (list)

An operator that excludes events that match the exact value of the event record field specified as the value of Field .

(string)

NotStartsWith -> (list)

An operator that excludes events that match the first few characters of the event record field specified as the value of Field .

(string)

NotEndsWith -> (list)

An operator that excludes events that match the last few characters of the event record field specified as the value of Field .

(string)

Table of Contents

Feedback

User Guide