LXC allows for isolated environments called containers within a single Linux host using cgroups and namespaces. It provides a user-space interface and tools to easily create and manage these containers, which provide isolation of CPU, memory, block I/O and networking resources. LXC has been in development since 2009 and became production ready with version 1.0.0 in 2014, utilizing kernel features introduced in version 2.6.32. It includes commands like LXC-CREATE to build containers and LXC-INFO to view container information.

1. LXC
Joel Corrêa – Software architect @ilegra︎

2. OS level virtualization
Isolated environments in a single host
Virtual Machine -> Virtual environment
Isolated CPU, Memory, Block IO, Network
Joel Corrêa – Software architect @ilegra︎

3. Joel Corrêa – Software architect @ilegra︎

4. CGROUPS NAMESPACES
Kernel features
Joel Corrêa – Software architect @ilegra︎

5. “LXC is a user-space interface for the
Linux kernel containment features.
Through a powerful API and simple tools,
it lets Linux users easily create and
manage system or application containers.”
Technically speaking
Joel Corrêa – Software architect @ilegra︎

6. Joel Corrêa – Software architect @ilegra︎

7. Since Kernel 2.6.32 (2009)
First production ready
release: 1.0.0 (2014)
Joel Corrêa – Software architect @ilegra︎

8. Joel Corrêa – Software architect @ilegra︎

9. LXC Commands
LXC-CREATE
LXC-INFO
LXC-START
Joel Corrêa – Software architect @ilegra︎

10. Joel Corrêa – Software architect @ilegra︎

11. Docker
LXC Libcontainer
Joel Corrêa – Software architect @ilegra︎

12. Joel Corrêa – Software architect @ilegra︎

13. Additional References
https://www.stgraber.org/2013/12/20/lxc-1-0-blog-post-series/
http://jancorg.github.io/blog/2015/01/03/libcontainer-overview/
http://upstart.ubuntu.com/wiki/Cgroup
http://blog.scottlowe.org/2013/09/04/introducing-linux-network-namespaces/
Joel Corrêa – Software architect @ilegra︎