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Monitoringedit
The X-Pack monitoring components enable you to easily monitor the Elastic Stack from Kibana. You can view health and performance data for Elasticsearch, Logstash, and Kibana in real time, as well as analyze past performance. For more information, see Monitoring the Elastic Stack.
When you install X-Pack, a monitoring agent runs on each Elasticsearch node, Logstash
node, and Kibana instance to collect and index metrics. Each node and instance is
considered unique based on its persistent UUID, which is written to the
path.data directory when the node or instance starts.