Book Image

Containerization with LXC

By : Konstantin Ivanov
Book Image

Containerization with LXC

By: Konstantin Ivanov

Overview of this book

In recent years, containers have gained wide adoption by businesses running a variety of application loads. This became possible largely due to the advent of kernel namespaces and better resource management with control groups (cgroups). Linux containers (LXC) are a direct implementation of those kernel features that provide operating system level virtualization without the overhead of a hypervisor layer. This book starts by introducing the foundational concepts behind the implementation of LXC, then moves into the practical aspects of installing and configuring LXC containers. Moving on, you will explore container networking, security, and backups. You will also learn how to deploy LXC with technologies like Open Stack and Vagrant. By the end of the book, you will have a solid grasp of how LXC is implemented and how to run production applications in a highly available and scalable way.
Table of Contents (17 chapters)
Containerization with LXC
About the Author
About the Reviewer
Customer Feedback

Software bridging in Linux

Connecting LXC or any other type of virtual machine such as KVM or Xen, the hypervisor layer, or in the case of LXC, the host OS, requires the ability to bridge traffic between the containers/VMs and the outside world. Software bridging in Linux has been supported since the kernel version 2.4. To take advantage of this functionality, bridging needs to be enabled in the kernel by setting Networking support | Networking options | 802.1d Ethernet Bridging to yes, or as a kernel module when configuring the kernel.

To check what bridging options are compiled in the kernel, or available as modules, run the following command:

root@host:~# cat /boot/config-`uname -r` | grep -ibridge
# PC-card bridges