Taildrive

Taildrive allows you to persistently share folders with other users and devices on your Tailscale network (known as a tailnet). Using Taildrive, you could:

Share folders with your colleagues.
Access files from your desktop PC or NAS server from your phone, anywhere in the world.
Connect a backup utility, like Duplicati or rclone, to a Taildrive folder on your NAS.

Taildrive is currently in alpha. To try it, follow the steps below to enable it for your network using Tailscale 1.64.0 or later.

How it works

Normally, maintaining a file server requires you to manage credentials and access rules separately from the connectivity layer. Taildrive offers a file server that unifies connectivity and access controls, allowing you to share directories directly from the Tailscale client. You can then use your tailnet policy file to define which members of your tailnet can access a particular shared directory, and even define specific read and write permissions.

Beginning in version 1.64.0, the Tailscale client includes a WebDAV server that runs on 100.100.100.100:8080 while Tailscale is connected. Every directory that you share receives a globally-unique path consisting of the tailnet, the machine name, and the share name: /tailnet/machine/share.

For example, if you shared a directory with the share name docs from the machine mylaptop in the tailnet mydomain.com, the share's path would be /mydomain.com/mylaptop/docs.

Configure Taildrive

Taildrive's server component is only available on Linux, macOS, and Windows devices. iOS and Android devices can access directories shared from these platforms, but cannot share directories themselves.

Enable Taildrive in the policy file

You need to be an Owner, Admin, or Network admin to edit the tailnet policy file. Enabling Taildrive requires two steps: Enabling Taildrive on devices by setting a nodeAttr, and defining sharing permissions using grants.

Add `nodeAttrs` to enable Taildrive on devices

In order to share directories or access directories shared by other devices, you need to enable Taildrive in the nodeAttrs section of your tailnet policy file. Edit your policy file to make this change.

For example, this policy will enable Taildrive on every member's devices. Every member of your tailnet will be able to share directories from their device and access shared directories.

"nodeAttrs": [
  {
    "target": ["autogroup:member"],
    "attr": [
      "drive:share",
      "drive:access",
    ],
  }
]

This policy enables Taildrive access on all devices, but only allows Taildrive sharing on devices owned by tailnet administrators.

"nodeAttrs": [
  {
    // Any device can access shared directories with Taildrive
    "target": ["*"],
    "attr": ["drive:access"],
  },
  {
    // Only tailnet admins can use Taildrive to share directories
    "target": ["autogroup:admin"],
    "attr": [
      "drive:share",
      "drive:access",
    ],
  }
]

Once Taildrive has been enabled on your devices, you must define specific sharing permissions using grants.

The broadest possible policy allows all devices to access all shares in the tailnet, no matter which user or tag owns the device:

"grants": [
  {
    "src": ["*"],
    "dst": ["*"],
    "app": {
      "tailscale.com/cap/drive": [{
        "shares": ["*"],
        "access": "rw"
      }]
    }
  }
]

You may also choose to allow members to read and write to their own shared directories from any of their devices. A policy to allow this would look like:

"grants": [
  {
    "src": ["autogroup:member"],
    "dst": ["autogroup:self"],
    "app": {
      "tailscale.com/cap/drive": [{
        "shares": ["*"],
        "access": "rw"
      }]
    }
  }
]

You can also limit write access or even define permissions for accessing specific shares. The following policy allows all tailnet members to read files from the company-docs share with the tag fileserver, but does not grant access to any other shared directories besides company-docs and does not allow write access:

"grants": [
  {
    "src": ["autogroup:member"],
    "dst": ["tag:fileserver"],
    "app": {
      "tailscale.com/cap/drive": [{
        "shares": ["company-docs"],
        "access": "ro"
      }]
    }
  }
]

macOS GUI macOS CLI Windows Linux Synology iOS Android

Tailscale must be running in order be able to access Taildrive shares at 100.100.100.100:8080.

Using the Tailscale command-line interface (CLI), run the following command to share a directory via Taildrive. Replace <share-name> and <path> with your own values.

tailscale drive share <share-name> <path>

share-name: A name for the share that will be used in the Taildrive path. It does not need to be identical to the directory name. Share names may only contain the lowercase letters a-z, underscores _, parentheses (), or spaces. Leading and trailing spaces are omitted. Lowercase letters are required to avoid problems with clients that don't support case-sensitive file names.
path: The file system path to the directory that you wish to share.

Rename Taildrive shares

To rename an existing Taildrive share, run the following command. Replace <old-share-name> with the share name you want to rename, and <new-share-name> with its intended new name.

tailscale drive rename <old-share-name> <new-share-name>

Once you rename the share, users with the proper access can immediately access the share by using the new name.

Delete Taildrive shares

To delete an existing Taildrive share, run the following command. Replace <share-name> with the share you want to delete.

tailscale drive unshare <share-name>

List existing Taildrive shares

To list all existing Taildrive shares that are shared from a device, run the following CLI command on that device:

tailscale drive list

Tailscale will return a list of the directories on the device which are shared, along with their share name and the local user whose permissions have been used to share the folder.

$ tailscale drive list

name      path                      as
------    ----------------------    ----
nas       /media/data-A/nas-data    root
docs      /pi/docs                  root
backup    /pi/system-backups        root

Access directories shared with Taildrive

You can access Taildrive shares by connecting to the Taildrive server at 100.100.100.100:8080.

Open File Explorer, then right-click on This PC in the left sidebar and select Map network drive
Select the Drive letter and the Folder that you want to map your Taildrive shares to on your local machine.
Select the Reconnect at sign-in (optional) and Connect using different credentials checkboxes.
Select Connect to a Web site that you can use to store your documents and pictures.
Select Next.
Select Choose a custom network location and then select Next.
In the Internet or network address field, enter http://100.100.100.100:8080 and then select Next.
Leave the Username and Password field blank in the pop-up box, and select Ok.
Select the Next button, and then the Finish button.

Your Taildrive directory will appear as a mapped drive in Windows File Explorer, and will contain a folder with your tailnet name. Inside that folder, Taildrive will load a folder for each device in your tailnet, and any shares that are active on the devices will appear within those folders.

By default, Windows limits WebDAV files to 50MB. This can be changed by editing the registry key:

Open the Windows Run dialog by using the keyboard shortcut Windows + R.
In the dialogue box, type Regedit and select Ok.
Locate the registry key at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters, under the entry FileSizeLimitInBytes.
Change the value to 4294967295, which is 4GB. This is the maximum allowed value.

Limitations

A device shared into your tailnet cannot access any Taildrive folders in your tailnet. Similarly, a device you share to another tailnet cannot access any Taildrive folders in the other tailnet
Using Taildrive with rclone on client version 1.64.2 or earlier will fail without the --inplace flag. Use version 1.65.75 or later to avoid this.