> For the complete documentation index, see [llms.txt](https://docs.weka.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.weka.io/weka-filesystems-and-object-stores/attaching-detaching-object-stores-to-from-filesystems/attaching-detaching-object-stores-to-from-filesystems-1.md).

# Attach or detach object store buckets using the CLI

Attach or detach object store buckets for filesystems using the CLI.

## Attach an object store bucket to a filesystem

Attaches a filesystem to an existing object store bucket so the filesystem can tier data to it.

**Command:** `weka fs tier s3 attach`

```sh
weka fs tier s3 attach <filesystem> <obs-name> [--mode <obs-attach-mode>]
```

**Parameters**

| Parameter                   | Description                                 |
| --------------------------- | ------------------------------------------- |
| `filesystem`\*              | Name of the filesystem.                     |
| `obs-name`\*                | Name of the object store bucket to attach.  |
| `--mode` \<obs-attach-mode> | Operation mode for the object store bucket. |

## Detach an object store bucket from a filesystem

Detaches a filesystem from an object store bucket.

**Command:** `weka fs tier s3 detach`

```sh
weka fs tier s3 detach <filesystem> <obs-name> [--force]
```

**Parameters**

| Parameter       | Description                                                     |
| --------------- | --------------------------------------------------------------- |
| `filesystem`\*  | Name of the filesystem.                                         |
| `obs-name`\*    | Name of the object store bucket to detach.                      |
| `-f`, `--force` | Force action. Perform this action without further confirmation. |

{% hint style="info" %}
To [recover from a snapshot](/weka-filesystems-and-object-stores/snap-to-obj/snap-to-obj-1.md#create-a-filesystem-from-a-local-uploaded-snapshot) uploaded when two `local` object stores have been attached, use the `--additional-obs` parameter in the `weka fs download` command. The primary object store should be the one where the locator has been uploaded to
{% endhint %}


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