I will appreciate if someone could introduce me to LXC and tell me how to get started with this technology? In which cases does it make sense to use, and in which should i stay away from it?
Linux Containers ( Ubuntu )
Overview
Linux Containers (LXC) are lightweight virtualization technology and provide a free software virtualization system for computers running GNU/Linux, This is accomplished through kernel level isolation, It allows one to run multiple virtual units (containers) simultaneously on the same host.
A container is a way to isolate a group of processes from the others on a running Linux system. By making use of existing functionality like the Linux kernel's new resource management and resource isolation features (Cgroups and name spaces), these processes can have their own private view of the operating system with its own process ID (PID) space, file system structure and network interfaces.
Containers share the same kernel with anything else that is running on it, but can be constrained to only use a defined amount of resources such as CPU, memory or I/O. By combining containers with other features like the Btrfs file system , it will be possible to quickly set up multiple lightweight isolated Linux instances on a single host. Therefore containers are better compared to Solaris zones or BSD jails.
Installation
Making LXC easier
One of the main focus for Ubuntu LTS was to make LXC dead easy to use, to achieve this.
Creating a basic container and starting it on Ubuntu
sudo apt-get install lxc
sudo lxc-create -t ubuntu -n my-container
sudo lxc-start -n my-container
Log In
sudo lxc-console -n my-container -t 1
This will default to using the same version and architecture as your machine, additional option are obviously available (–help will list them). Login/Password are ubuntu/ubuntu.
For More About LXC
For Newbie I would recommend to use LXC Webpanel, The good part is that if you make a container through cli mode, It will show up in LXC Web Panel
sudo apt-get install lxc debootstrap bridge-utils -y
sudo su
wget https://lxc-webpanel.github.com/tools/install.sh -O - | bash
Open Web Browser and Connect
http://your_ip_address:5000/
Login with user admin and password admin
Containers Overview
LXC Network
Container Settings
Resource Limitation
User Modification ( Create, Delete Modify )
