What are LXCs?

Containers are a lightweight virtualization technology. They are more akin to an enhanced chroot than to full virtualization like Qemu or VMware, both because they do not emulate hardware and because containers share the same operating system as the host.

Installing lxc

First of all, you have to install lxc and its dependencies. So, go ahead and issue the following command:

sudo apt-get install lxc

Downloading a template and creating a container

The next step, after installing lxc, is to download the template you want and create the container:

sudo lxc-create -t download -n n1

After executing the above command, the system will list the available templates and interactively ask you to choose among the options of Distribution,

Sponsored
Release and Architecture.

In this example, we will use an archlinux image.

Distribution: archlinux
Release: current
Architecture: amd64

Note: Adjust the above options to your needs.

Once the operation is finished, you’ll see the following message:

You just created an ArchLinux container (release=current, arch=amd64, variant=default)

For security reason, container images ship without user accounts
and without a root password.

Use lxc-attach or chroot directly into the rootfs to set a root password
or create user accounts.

This means that the container has been created successfully.

You can verify that the container is created by issuing the following command:

sudo lxc-ls --fancy

Which will return:

NAME STATE   AUTOSTART GROUPS IPV4 IPV6 
n1   STOPPED 0         -      -    -

Running a container

To run the created container, you have to execute the following command:

sudo lxc-start -n n1 -d

Obviously, n1 is the container we created earlier.

Sponsored

To see if it started, run:

sudo lxc-ls --fancy

Which will now return:

NAME STATE   AUTOSTART GROUPS IPV4       IPV6 
n1   RUNNING 0         -      10.0.3.119 -

Attaching to a container

You can connect to the running container using the

lxc-attach

  command.

sudo lxc-attach -n n1

You will be then logged in as root to the newly created container.

Stopping a container

You can stop a container with the following command:

sudo lxc-stop -n <container name>

For our example:

sudo lxc-stop -n n1

Destroying a container

If you want to completely destroy a container:

sudo lxc-destory -n <container name>

 

The post Setting up Linux Containers (LXC) appeared first on NixPal.

Ubuntu Server Admin

Recent Posts

Welcome to the Ubuntu Weekly Newsletter 883

Welcome to the Ubuntu Weekly Newsletter, Issue 883 for the week of March 9 –…

11 hours ago

How to Install nvidia-smi on Ubuntu or Debian Linux

In this article, we will see how to install nvidia-smi on Ubuntu or Debian Linux.…

23 hours ago

How to Install clang tool on Ubuntu or Debian Linux

In this article, we will see how to install clang tool on Ubuntu or Debian…

2 days ago

How to resolve Ubuntu 20.04 Container Signature Errors on Raspberry Pi ARM Devices

When working with Docker containers on Raspberry Pi devices, you might encounter frustrating signature verification…

3 days ago

How to fix DNS Resolution Issues with OpenVPN on Ubuntu 18.04

You’ve recently upgraded to Ubuntu 18.04 and found that your OpenVPN connection no longer resolves…

3 days ago

How to Fix Ubuntu 18.04 System Monitor Launch Issues

Have you ever tried to open System Monitor on your Ubuntu 18.04 system only to…

4 days ago