Snapshot

A snapshot is a backup of your cluster index(s). Snapshots are stored in a repository that has been registered before. A repository can contain multiple snapshots of the same cluster. A snapshot can be created by executing the following command:

curl -XPUT localhost:9200/_snapshot/my_backup/first_snapshot

The _snapshot is REST endpoint for snapshot operations. Its second parameter is a unique snapshot name. The preceding command creates a snapshot of all open and started indices in the cluster. If you want to back up a certain index, you must specify the list of indices in the body of the request:

curl -XPUT localhost:9200/_snapshot/my_backup/first_snapshot -d '{
  "indices": "my_index",
  "ignore_unavailable": "true",
  "include_global_state": false,
  "partial": true
}'

The indices parameter supports multi-index syntax; that means you can separate the index names with commas or you can use a wildcard, like *. Default value of the ignore_unavailable parameter is true. It will cause...