#Systemrescuecd 5.1.0 how to#
#Systemrescuecd 5.1.0 install#
#Systemrescuecd 5.1.0 iso#
#Systemrescuecd 5.1.0 download#

#Systemrescuecd 5.1.0 download#

The official repo is on GitHub - dmacvicar/terraform-provider-libvirt and you can download a precompiled version for your distro from the repo, or you can download a generic version from my gitlab repo Terraform provider to provision infrastructure with Linux’s KVM using libvirt

To access the libvirt daemon via terraform, we need the terraform-libvirt provider.

Verify that you have access to libvirt $ virsh -c qemu:///system version Same thing for libvirt $ libvirtd -version

#Systemrescuecd 5.1.0 install#

Install Terraform v0.13 either from your distro or directly from hashicopr’s site.

#Systemrescuecd 5.1.0 how to#

In this article I will try to explain how to use libvirt -that means kvm- with terraform and provide a simple way to run this on your linux machine.īe aware this will be a (long) technical article and some experience is needed with kvm/libvirt & terraform but I will try to keep it simple so you can follow the instructions. I was doing this kind of testing with public cloud providers with minimal VMs and for short time of periods to reduce any costs. Working on your home lab, it is quiet often that you need to spawn containers or virtual machines to test or develop something. Many thanks to erethon for his help & support on this article. We need to see our base image grow we our changes disk size: 1.6 GiBĪnd we can verify that by getting the image info (details) sudo qemu-img commit /var/lib/libvirt/images/lEvXLA_tf-vol.qcow2īe aware, we commit our changes the volume disk => so our base will get the updates !! Base Image If we want to commit our volume changes to our base images, we need to commit them. Image: /var/lib/libvirt/images/lEvXLA_tf-base.qcow2īy inspecting the volume disk, we see that this image is chained to our base image. Qemu-img info –backing-chain /var/lib/libvirt/images/lEvXLA_tf-vol.qcow2 image: /var/lib/libvirt/images/lEvXLA_tf-vol.qcow2 Let’s first understand a bit better what is happening here The volume disk contains only the delta from the base image! baking file If I copy the volume disk, then I will copy 1.6G of the snapshot disk. It will help me speed things up and also do some common things I am usually doing in every setup. I would like to use my own cloud image as base for some projects. Qemu-img info /var/lib/libvirt/images/lEvXLA_tf-vol.qcow2 image: /var/lib/libvirt/images/lEvXLA_tf-vol.qcow2īacking file: /var/lib/libvirt/images/lEvXLA_tf-base.qcow2Ĭause I have extended the volume disk size to 10G from 2.2G, doing some updates and install some packages. The most important attributes to inspect are virtual size: 2.2 GiBĪnd the volume disk of my virtual machine Qemu-img info /var/lib/libvirt/images/lEvXLA_tf-base.qcow2 image: /var/lib/libvirt/images/lEvXLA_tf-base.qcow2 To see how that works here is a local example from my linux machine. Or you can always create another snapshot and revert if needed. It is best because you can always quickly revert all your changes and (re)spawn the VM from the fresh/clean base image. So instead of doing that, the best practice is to copy this image as base and start from a snapshot aka a baking file from that image. When choosing this image, then all changes will occur to that image and if you want to spawn another virtual machine, you need to (re)download it.

#Systemrescuecd 5.1.0 iso#

When creating a new Libvirt (qemu/kvm) virtual machine, you can use this base image to start your VM instead of using an iso to install ubuntu 22.04 LTS. Just for the sake of this example, let us say that the base cloud image is the jammy-server-cloudimg-amd64.img

When creating a new Cloud Virtual Machine the cloud provider is copying a virtual disk as the base image (we called it mí̱tra or matrix) and starts your virtual machine from another virtual disk (or volume cloud disk) that in fact is a snapshot of the base image.