Monday, January 13, 2014

[LXC] How to use LXC?

At the first glimpse, I was amazed by its way to provide a lightweight container in virtual environment. With shell scripts combining, we can use these to build a convenient and powerful automation solution to test all kind of programs that need multiple virtual machines within a server host ( at least my focus is on the automation test...XD ). There are already a bunch of articles to introduce LXC. Here I only list some common use commands for reference quickly:

# Install LXC
sudo apt-get install lxc

# Create a Linux Container named base ( -t: template, -n: namespace )
sudo lxc-create -t ubuntu -n base

# Start the Linux Container ( -d: daemon )
sudo lxc-start -n base -d

# Stop the Linux Container
sudo lxc-stop -n base

# List Linux Containers
lxc-ls --fancy

# Clone the Linux Container
lxc-clone -o base -n newvm1

# Access the container
lxc-console -n newvm1

# Shudown
lxc-shutdown -n test-container

# Destroy
lxc-destroy -n test-container

LXC can be controlled via Libvirt:

Exploring LXC Networking:

By default, containers will not be started after a reboot, even if they were running prior to the shutdown.
To make a container autostart, you simply need to symlink its config file into the /etc/lxc/auto directory:
ln -s /var/lib/lxc/test-container/config /etc/lxc/auto/test-container.conf


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