Connecting a USB device to an LXC container can be a useful feature when you want to access USB devices from within the container. In this article, we will guide you through the process of connecting a USB device to an LXC container step by step.
Prerequisites
Before we begin, make sure you have the following:
- An LXC container running on your system
- A USB device that you want to connect to the container
Step 1: Check USB Device Availability
First, you need to check if your USB device is available on the host system. Connect the USB device to your system and run the following command in the terminal:
lsusb
This command will list all the connected USB devices on your system. Make a note of the device ID or any other identifying information of the USB device you want to connect to the LXC container.
Step 2: Configure the LXC Container
Next, you need to configure the LXC container to allow USB device access. Open the configuration file of your LXC container using a text editor. The configuration file is usually located in the /var/lib/lxc directory with the name of your container as the file name, followed by config as the extension.
Find the line that starts with lxc.cgroup.devices.allow and add the following entry:
lxc.cgroup.devices.allow = c 189:* rwm
This entry allows the container to access USB devices by granting read, write, and mknod permissions. Save the changes and exit the text editor.
Step 3: Restart the LXC Container
After making the configuration changes, you need to restart the LXC container for the changes to take effect. Use the following command to restart the container:
sudo lxc-stop -n CONTAINER_NAME
sudo lxc-start -n CONTAINER_NAME
Replace CONTAINER_NAME with the actual name of your LXC container.
Step 4: Connect the USB Device to the LXC Container
Now, you can connect the USB device to the LXC container. In the terminal, run the following command:
sudo lxc-attach -n CONTAINER_NAME
This command will attach your terminal to the LXC container. Once you are inside the container, run the following command to list the available USB devices:
lsusb
You should see the USB device listed among the connected devices. If the device is not listed, make sure it is properly connected to the host system and try again.
Step 5: Mount the USB Device
Finally, you need to mount the USB device inside the LXC container to access its contents. Run the following command to create a mount point:
sudo mkdir /mnt/usb
Next, mount the USB device to the mount point using the following command:
sudo mount /dev/bus/usb/DEVICE_ID /mnt/usb
Replace DEVICE_ID with the device ID you noted in Step 1.
You can now access the contents of the USB device by navigating to the /mnt/usb directory inside the LXC container.
Conclusion
By following these steps, you should now be able to connect a USB device to an LXC container and access its contents. Remember to properly unmount the USB device before disconnecting it to avoid data corruption.
References
| Source | Link |
|---|---|
| LXC Documentation | https://linuxcontainers.org/lxc/documentation/ |
| Ubuntu Documentation | https://help.ubuntu.com/lts/serverguide/lxc.html |