You are looking at documentation for an older release. Not what you want? See the current release documentation.
Alerting plugins allow Elasticsearch to monitor indices and to trigger alerts when thresholds are breached.
Core alerting pluginsedit
The core alerting plugins are:
- [2.3.0] Deprecated in 2.3.0. The standalone Watcher plugin will be replaced by the X-Pack in 5.0.0. Watcher is the alerting and notification product for Elasticsearch that lets you take action based on changes in your data. It is designed around the principle that if you can query something in Elasticsearch, you can alert on it. Simply define a query, condition, schedule, and the actions to take, and Watcher will do the rest.