Using Mounts

Mounts is a feature that allows administrators to mount other directories from the host file-system into a Server's container.

Mounts is a feature that allows administrators to mount other directories from the host file-system into a Server's container.

Kuber Configuration

For security reasons it is not possible to mount directories on a cluster by default. Directories that should be mountable have to be specified explicitly in the Kuber configuration.

In the Kuber configuration file (/etc/kubectyl/config.yml) the allowed_mounts field is used to list mountable directories. The listed directories and all their subdirectories can be mounted.

allowed_mounts:
- /example

You have to restart Kuber to apply new changes to your Kuber config.

Panel Configuration

You have to configure mounts in admin Panel in order to use them with your servers. They consist of a source pad on the node and a target path where it will be mounted in the container.

Path in the container

Mounts cannot be mounted to or inside of /home/container or any subdirectory of it, nor can you cross-mount servers such as Server A's directory into Server B.

Creating a Mount

1. In the admin Panel go to Mounts.

2. Create a new mount.

3. Fill in the details as required.

   • Name: Name for your mount.

   • Description: Description for your mount.

   • Source: The absolute path to the folder or files on the Node machine.

   • Target: The absolute path where the mount will be placed inside of your server, can not include /home/container in the path.

   • Read Only: Whether the mount will be read-only for the servers using it.

   • User Mountable: Whether to allow users to self mount this mount.

4. After creating the mount, you are required to add both Rockets and Clusters that this mount may be used on.

Mounts used by multiple servers

All servers using the same mounts will only share their contents when they are on the same cluster node. Mounts are not synchronized between nodes.

Assigning a Mount to a Server

1. In the admin Panel navigate to the server you would like to use a mount with

2. Go to the mounts page

3. Click the + button

4. Restart the server

The files of the mount should become available in the target path in the container. You can temporarily change your server startup command to ls <mount target>, which should output the contents of the mount if configured correctly.

Mounts cannot be accessed

Mounts do not appear in the Panel's file manager, nor are they accessible via SFTP. However, the server itself will be able to see and use the mounts.

Example Mount

The example mount below is stored in the path /var/lib/kubectyl/mounts, which we add to the Kuber config.yml

allowed_mounts:
  - /var/lib/kubectyl/mounts