Elasticsearch is commonly used as a data store for logs and other kinds of data. Therefore, if you store valuable data, then you will also need tools to back up and restore this data to support disaster recovery.
In the earlier versions of Elasticsearch, the only viable solution was to dump your data with a complete scan and then reindex it. As Elasticsearch matured as a complete product, it supported native functionalities to back up the data and restore it.
In this chapter, we'll explore how you can configure a shared storage using Network File System (NFS) for storing your backups, and how to execute and restore a backup.
In the last recipe of the chapter, we will demonstrate how to use the reindex functionality to clone data between different Elasticsearch clusters. This approach is very useful if you are not able to use standard backup...
