The Discover page provides every document in every index that matches the selected index pattern (realtime and historic). You can perform the following actions on the Discover page:
Search for the events
Submit search queries
Filter the search results
View document data for a time range
View the number of documents that match the search query
Get field value statistics
Setting an index pattern is important to drill down, explore, and visualize the data. You can use both the Kibana Query Language (KQL) and Lucene query syntax for simplified query.
You can also view and share reports of the data search using Snapshot or Saved objects.
NOTE:It is highly recommended to take snapshots to avoid data loss. For more information, see Section 21.11, Snapshot and Restore.
For more information about Discover, see Discover in the Kibana Guide.