Learn how to create a custom LXD Debian Image. Our LXC/LXD Support team is here to help you with your questions and concerns.
How to create Custom LXD Debian Image
Today, we are going to create a custom LXD image based on a basic Debian installation. This works for local use or publishing.
- To begin with, we have to install debootstrap.
sudo apt install debootstrap
Copy CodeThis will let us create a minimal Debian system in a specified directory.
- If LXD is not already installed and configured, we have to install updates on Debian box as seen here:
$ sudo apt update $ sudo apt upgrade
Copy Code - Then, it is time to create a minimal Debian installation in a specified directory.
For instance, to install Debian Sid (unstable) in a temporary directory:
mkdir /tmp/sid-lxd sudo debootstrap sid /tmp/sid-lxd
Copy CodeAt this point, we have to enter the created chroot environment to make changes. This will make our container different. For example, to preconfigure the repository for Node.js:
sudo chroot /tmp/sid-lxd wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - echo 'deb https://deb.nodesource.com/node_8.x sid main' > /etc/apt/sources.list.d/nodesource.list echo 'deb-src https://deb.nodesource.com/node_8.x sid main' >> /etc/apt/sources.list.d/nodesource.list exit
Copy Code - Then, we have to create a compressed tarball of the root directory of our newly installed system:
sudo tar -cvzf rootfs.tar.gz -C /tmp/sid-lxd
Copy Code - Now, it is time to create a metadata.yaml file. It contains information like image creation date, architecture, name, and description. In order to create an LXD image, we need a metadata.yaml file.
For example:
architecture: "x86_64" creation_date: 1458040200 properties: architecture: "x86_64" description: "Debian Unstable (sid) with preconfigured Node.js repository (20171227)" os: "debian" release: "sid"
Copy Code - After the metadata file creation, we have to create a tarball with the metadata file:
tar -cvzf metadata.tar.gz metadata.yaml
Copy Code - Then, import the two tarballs as LXD images:
lxc image import metadata.tar.gz rootfs.tar.gz --alias sid-nodejs
Copy Code - Then, we can create a new container from this image:
lxc launch sid-nodejs tutorial lxc exec tutorial bash
Copy Code - Next, verify if the container uses the Node.js repository with this command:
sudo apt update && apt-cache show nodejs
Copy Code - Then, configure the LXD daemon to listen to the network and tag the image as public:
lxc config set core.https_address "[::]:8443"
Copy CodeOther users can now add our server as a public image server and create containers from our image.
- Additionally, we can make our LXD image available for server users, by modifying the public parameter:
lxc image edit sid-nodejs
Copy CodeHere, change `false` to `true` in the last line, save the file, and we have shared our LXD image!
Furthermore, we can see all available Debian OS templates by running:
lxc image list images: debian
Copy CodeWe can easily create a container with Debian 10 OS as seen here:
lxc launch images:debian/10 my-debian
Copy Code
[Need assistance with a different issue? Our team is available 24/7.]
Conclusion
In brief, our Support Experts demonstrated how to create a custom LXD Debian Image.
PREVENT YOUR SERVER FROM CRASHING!
Never again lose customers to poor server speed! Let us help you.
Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.
0 Comments