Restoring a snapshot

After you have taken snapshots of your data, they can be restored. The restoration process is often very fast; the indexed data is copied on the nodes and then activated.

Getting ready

You need a working ElasticSearch cluster and the snapshot created in the previous recipe.

How to do it...

To restore a snapshot, we will perform the following step:

• To restore a snapshot called snap_1 for the index test and test2, the HTTP method is PUT, and the curl command is:

  curl -XPOST "localhost:9200/_snapshot/my_backup/snap_1/_restore?pretty" -d '{
    "indices": "test-index,test-2",
    "ignore_unavailable": "true",
    "include_global_state": false,
    "rename_pattern": "test-(.+)",
    "rename_replacement": "copy_$1"
  }'
  

  The result will be as follows:

  {
    "accepted" : true
  }

The restoration is finished when the cluster state turns from red to yellow or green.

How it works...

The...