Restoring a snapshot

Once you have snapshots of your data, it can be restored. The restore process is very fast: the indexed shard data is simply copied on the nodes and activated.

Getting ready

You need an up-and-running Elasticsearch installation as we described in the Downloading and installing Elasticsearch recipe in Chapter 2, Downloading and Setup.

To execute curl via the command line, you need to install curl for your operative system.

To correctly execute the following command, the backup created in the previous recipe is required.

How to do it...

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

1. To restore a snapshot called snap_1 for the test and test1 indices, the HTTP method is PUT and the curl command is:

   curl -XPOST 
           "http://localhost:9200/_snapshot/my_repository/snap_1/_restore? 
           pretty" -d '{
           "indices": "test-index,test-2",
           "ignore_unavailable": "true",
           "include_global_state": false,
           "rename_pattern": "test-(.+...