Prompted by the merge of support for user namespaces in recent kernels, I've written a couple of simple standalone tools that use them together with mount, PID and other namespaces to implement containers.
I've put these utilities up here in case they're of use to anyone else, and also as demonstrations of how easy-to-use these new kernel interfaces are: https://github.com/arachsys/containers http://arachsys.github.io/downloads/containers-0.9.tar.gz http://arachsys.github.io/downloads/containers-0.9.tar.sign They support the same /etc/subuid and /etc/subgid files that Eric Biederman proposed in his patch set against the shadow package, which will hopefully become a fairly standard mechanism for delegating extra users and groups. User namespaces arrived without much fanfare, but they're really useful new functionality. I was pleasantly surprised how straightforward it was to build both fully isolated containers, and also a replacement for fakeroot which allows me to chroot to build packages. Many thanks to Eric for working on this and also for patiently explaining the rationale behind the design decision to remap user IDs on the kernel list recently. Cheers, Chris. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
