mirror of https://github.com/status-im/consul.git
78 lines
2.8 KiB
Plaintext
78 lines
2.8 KiB
Plaintext
---
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layout: commands
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page_title: 'Commands: Snapshot Save'
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---
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# Consul Snapshot Save
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Command: `consul snapshot save`
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Corresponding HTTP API Endpoint: [\[GET\] /v1/snapshot](/consul/api-docs/snapshot#generate-snapshot)
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The `snapshot save` command is used to retrieve an atomic, point-in-time snapshot
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of the state of the Consul servers which includes key/value entries,
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service catalog, prepared queries, sessions, and ACLs. The snapshot is saved to
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the given file.
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If ACLs are enabled, a management token must be supplied in order to perform
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a snapshot save.
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-> Note that saving a snapshot involves the server process writing the snapshot to a
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temporary file on-disk before sending that file to the CLI client. The default location
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can vary depending on operating system, but typically is `/tmp`. You can get more detailed
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information on default locations in the Go documentation for [os.TempDir](https://golang.org/pkg/os/#TempDir).
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If you need to change this location, you can do so by setting the `TMPDIR` environment
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variable for the Consul server processes. Keep in mind that setting the environment variable for
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the CLI client attempting to perform a snapshot save will have no effect. It _must_ be set in
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the context of the server process. If you're using Systemd to manage your Consul server
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processes, then adding `Environment=TMPDIR=/path/to/dir` to your Consul unit file will work.
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The table below shows this command's [required ACLs](/consul/api-docs/api-structure#authentication). Configuration of
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[blocking queries](/consul/api-docs/features/blocking) and [agent caching](/consul/api-docs/features/caching)
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are not supported from commands, but may be from the corresponding HTTP endpoint.
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| ACL Required |
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| ------------ |
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| `management` |
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## Usage
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Usage: `consul snapshot save [options] FILE`
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#### API Options
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@include 'http_api_options_client.mdx'
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@include 'http_api_options_server.mdx'
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## Examples
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To create a snapshot from the leader server and save it to "backup.snap":
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```shell-session
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$ consul snapshot save backup.snap
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Saved and verified snapshot to index 8419
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```
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By default, snapshots are taken using a consistent mode that forwards requests
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to the leader and the leader verifies it is still in power before taking the
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snapshot.
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After the snapshot is written to the given file it is read back and verified for
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integrity.
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To create a potentially stale snapshot from any available server, use the stale
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consistency mode:
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```shell-session
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$ consul snapshot save -stale backup.snap
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# ...
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```
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This is useful for situations where a cluster is in a degraded state and no
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leader is available. To target a specific server for a snapshot, you can run
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the `consul snapshot save` command on that specific server.
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Please see the [HTTP API](/consul/api-docs/snapshot) documentation for
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more details about snapshot internals.
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