modules from super container world of warship

In the most privileged version, the SPC will use ONLY the MOUNT (newns) namespace. This means it is exposed to more of the Host OS. I define an SPC as a container that runs with security turned off ( -privileged) and turns off one or more of the namespaces or 'volume mounts in' parts of the host OS into the container. Super Privileged Container (SPC)Ī proposal I have been knocking around for a while now is the idea of a Super Privileged Container (SPC). You can also modify the SELinux type that a container will run with using the -security-opt label:TYPE_T calls. You can get more fine grained controls then this by using cap_add and cap_remove to modify the Linux capabilities given to a container (see Capabilities, a short intro and Capability-based security for an overview). The -privileged option turns off almost all of the security used to confine one container from others and from the host. The first thing you usually have to do to get this to work (but not always) is turn off or turn down the security. However, if you want to install debugging tools, monitoring tools, management tools, etc you should also ship them as container images. Which, in the abstract, makes perfect sense. Second: the application can be installed without breaking any other applications or the host.Įnter container hosts, like Project Atomic, which keep the OS minimal and ship all of the software as containers. One: the application always has the same runtime environment - meaning packages can be installed on the host, without affecting the application. In other words, the application brings all of the content needed to do its job with it, including the shared libraries, and specific versions of python, ruby, glibc. I envision a world where lots of software gets shipped in image format. However, what if you want to ship a container that needs to have access to the host system or other containers? Well, let's talk about removing all the security! Safely? * Are Docker containers really secure?* and * Bringing new security features to Docker*. I have written a lot about *Containing the Containers*, e.g. Letting the containers out of containment.

Modules from super container world of warship