# Yandex Audit Trails event reference

Audit Trails supports tracking control plane events for Yandex Cloud CDN. For more information, see [Management event audit log](../audit-trails/concepts/format.md).

The general format of the `event_type` field value is as follows:

```text
yandex.cloud.audit.cdn.<event_name>
```

You can find the detailed JSON structure of the event record in the audit log reference. The events in it are sorted alphabetically without division into levels and contain all possible fields. In real logs, the field set depends on the parameters of the event and particular object.

Event name | Description
--- | ---
`gcore.CachePrefetch` | Preloading cache
`gcore.CachePurge` | Purging cache
`gcore.OriginCreate` | Creating an origin
`gcore.OriginDelete` | Deleting an origin
`gcore.OriginGroupCreate` | Creating an origin group
`gcore.OriginGroupDelete` | Deleting an origin group
`gcore.OriginGroupUpdate` | Updating an origin group
`gcore.OriginUpdate` | Changing an origin
`gcore.ProviderActivate` | Activating a provider
`gcore.RawLogsActivate` | Enabling log export
`gcore.RawLogsDeactivate` | Disabling log export
`gcore.RawLogsUpdate` | Updating log export settings
`gcore.ResourceCreate` | Creating a resource
`gcore.ResourceDelete` | Deleting a resource
`gcore.ResourceRuleCreate` | Creating a Rewrite rule
`gcore.ResourceRuleDelete` | Deleting a Rewrite rule
`gcore.ResourceRuleUpdate` | Updating a Rewrite rule
`gcore.ResourceUpdate` | Changing a resource