Configures an event selector or advanced event selectors for your trail. Use event selectors or advanced event selectors to specify management and data event settings for your trail. If you want your trail to log Insights events, be sure the event selector enables logging of the Insights event types you want configured for your trail. For more information about logging Insights events, see
Logging Insights events for trails in the
CloudTrail User Guide. By default, trails created without specific event selectors are configured to log all read and write management events, and no data events.
When an event occurs in your account, CloudTrail evaluates the event selectors or advanced event selectors in 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.
Example
- You create an event selector for a trail and specify that you want write-only events.
- The EC2
GetConsoleOutput
and RunInstances
API operations occur in your account. - CloudTrail evaluates whether the events match your event selectors.
- The
RunInstances
is a write-only event and it matches your event selector. The trail logs the event. - The
GetConsoleOutput
is a read-only event that doesn't match your event selector. The trail doesn't log the event.
The
PutEventSelectors
operation must be called from the Region in which the trail was created; otherwise, an
InvalidHomeRegionException
exception is thrown.
You can configure up to five event selectors for each trail. For more information, see
Logging management events,
Logging data events, and
Quotas in CloudTrail in the
CloudTrail User Guide.
You can add advanced event selectors, and conditions for your advanced event selectors, up to a maximum of 500 values for all conditions and selectors on a trail. You can use either
AdvancedEventSelectors
or
EventSelectors
, but not both. If you apply
AdvancedEventSelectors
to a trail, any existing
EventSelectors
are overwritten. For more information about advanced event selectors, see
Logging data events in the
CloudTrail User Guide.
Note: For scripts written against earlier versions of this module this cmdlet can also be invoked with the alias,
Write-CTEventSelectors.