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Elastic Docs ›Elasticsearch Guide [8.4] ›Snapshot and restore ›Register a snapshot repository

Read-only URL repository

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Read-only URL repository

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This repository type is only available if you run Elasticsearch on your own hardware. If you use Elasticsearch Service, see Elasticsearch Service repository types.

You can use a URL repository to give a cluster read-only access to a shared file system. Since URL repositories are always read-only, they’re a safer and more convenient alternative to registering a read-only shared filesystem repository.

Use Kibana or the create snapshot repository API to register a URL repository.

PUT _snapshot/my_read_only_url_repository
{
  "type": "url",
  "settings": {
    "url": "file:/mount/backups/my_fs_backup_location"
  }
}

Repository settings

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chunk_size
(Optional, byte value) Maximum size of files in snapshots. In snapshots, files larger than this are broken down into chunks of this size or smaller. Defaults to null (unlimited file size).
http_max_retries
(Optional, integer) Maximum number of retries for http and https URLs. Defaults to 5.
http_socket_timeout
(Optional, time value) Maximum wait time for data transfers over a connection. Defaults to 50s.
compress
(Optional, Boolean) If true, metadata files, such as index mappings and settings, are compressed in snapshots. Data files are not compressed. Defaults to true.
max_number_of_snapshots
(Optional, integer) Maximum number of snapshots the repository can contain. Defaults to Integer.MAX_VALUE, which is 2^31-1 or 2147483647.
max_restore_bytes_per_sec
(Optional, byte value) Maximum snapshot restore rate per node. Defaults to unlimited. Note that restores are also throttled through recovery settings.
max_snapshot_bytes_per_sec
(Optional, byte value) Maximum snapshot creation rate per node. Defaults to 40mb per second.
url

(Required, string) URL location of the root of the shared filesystem repository. The following protocols are supported:

  • file
  • ftp
  • http
  • https
  • jar

URLs using the http, https, or ftp protocols must be explicitly allowed with the repositories.url.allowed_urls cluster setting. This setting supports wildcards in the place of a host, path, query, or fragment in the URL.

URLs using the file protocol must point to the location of a shared filesystem accessible to all master and data nodes in the cluster. This location must be registered in the path.repo setting. You don’t need to register URLs using the ftp, http, https, or jar protocols in the path.repo setting.

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