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FreeBSD Jails - notes jotted on the prison wall.

Bjoern A. Zeeb
Author Description:
Bjoern A. Zeeb is a FreeBSD source committer and a member of the Security and Release Engineering Teams.

He earned a Bachelor's Degree in Computer Science from University of Cooperative Education Stuttgart. If not spending his time on FreeBSD he is doing R&D as well as consulting.

In his other life, he likes the big blue room, cycling and his camera, as well as following the life Dinosaurs of modern computing.
For over a decade, FreeBSD has supported lightweight OS virtualisation through the Jail framework. The jail approach allows a single kernel to share multiple user space installations, each with their own root user and management environment. Jail has been widely adopted by Internet service providers to achieve virtual machine densities of hundreds or thousands of virtual instances, per server, but also for enterprise service virtualisation.

This talk describes the changes of the last years as well exciting on-going work on new features like resource limits, the virtual network stack and further virtualisation. It will give you the background to be able to decide when modern Jails are more appropriate than other approaches, like fully virtualised hardware. Ideas on interesting use cases for research and development, on simulations, for Internet Service Providers or other businesses will help you with your evaluation. The talk will end with an outlook on future plans.
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