Backup Restore

Backup

Mount same filesystem on every node
Add a repository path on every node by put this into every elasticsearch.yml file:
```
 # Specifies the root folder for backups
 path.repo: ["/backup/es_save"]
```

Create a repository via snapshot api:

 PUT /_snapshot/<name-of-repository>
 {
  "type": "fs",
  "settings": {
  "location": "/backup/es_save/backup-6.1.3/",
  "compress": true
  }
 }

Start snapshot creation

 PUT /_snapshot/indices-6.1.3/snapshot_1?wait_for_completion=false
 {
 }