How to Hide Mountpoints and Hosts Hardware Info from Container
When running containers, it is sometimes necessary to hide certain information about the underlying system from within the container. This can be useful for security reasons or to prevent sensitive information from being exposed. In this article, we will discuss how to hide mountpoints and hosts hardware information from a container.
Hiding Mountpoints
Mountpoints are directories on the host system that are made available to the container. By default, all the mountpoints on the host are visible within the container. However, there are ways to hide specific mountpoints.
To hide a mountpoint from a container, you can use the --volume-driver flag when starting the container. This flag allows you to specify a different volume driver for the container, effectively hiding the mountpoints associated with the default driver.
Here is an example command to start a container with a different volume driver:
docker run --volume-driver=mydriver mycontainerBy using a custom volume driver, you can control which mountpoints are visible within the container.
Hiding Hardware Info
In addition to hiding mountpoints, you may also want to hide hardware information from within the container. This can include details about the host system's CPU, memory, and other hardware components.
To hide hardware information, you can use the --device flag when starting the container. This flag allows you to specify which devices are visible within the container.
For example, if you want to hide the CPU information, you can use the following command:
docker run --device=/dev/null mycontainerBy mapping a device to /dev/null, you effectively hide the hardware information associated with that device from within the container.
Conclusion
Hiding mountpoints and hardware information from within a container can be important for security and privacy reasons. By using custom volume drivers and device mappings, you can control what information is visible within the container, preventing sensitive information from being exposed.
References
| Source | Link |
|---|---|
| Docker Documentation | https://docs.docker.com/ |
| Stack Overflow | https://stackoverflow.com/ |
| Docker Forums | https://forums.docker.com/ |