SUSE is well known for the standard enterprise linux distribution (aka SLES). As a result, most of the customers we have are not cloud-native, so cool stuff like microservices and serverless are no gonna happen within the day for them. There is a very good chance that some old monoliths running in Cobol today, will continue running in the same way for the next 10 years. However, companies are evolving and some parts of the business might (or they can be already) converted into containers. So what happens now? They have to keep maintaining two infrastructures:
- a modern kubernetes infrastructure
- the old and rusty one, running virtual machines
KubeVirt is giving a solution here, by teaching kubernetes to manage virtual machines as well. So kubelet instead of talking to Docker, now it can talk to KVM as well. That's simply amazing, plus on top of it, you can for free all the good features or self-healing, scaling and such of kubernetes now working with Virtual Machines.
It's the best intermediately step for businesses who want to migrate to microservices and cloud-native. Most of them are simply not there yet and this is the perfect middle-ground for them at the very moment.
With this project I will try to setup a SLES15SP1 virtual machine on my CaaSP v4.0 cluster using KubeVirt
Read more: https://kubevirt.io
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A CLI for Harvester by mohamed.belgaied
Harvester does not officially come with a CLI tool, the user is supposed to interact with Harvester mostly through the UI. Though it is theoretically possible to use kubectl to interact with Harvester, the manipulation of Kubevirt YAML objects is absolutely not user friendly. Inspired by tools like multipass from Canonical to easily and rapidly create one of multiple VMs, I began the development of Harvester CLI. Currently, it works but Harvester CLI needs some love to be up-to-date with Harvester v1.0.2 and needs some bug fixes and improvements as well.
Project Description
Harvester CLI is a command line interface tool written in Go, designed to simplify interfacing with a Harvester cluster as a user. It is especially useful for testing purposes as you can easily and rapidly create VMs in Harvester by providing a simple command such as:
harvester vm create my-vm --count 5
to create 5 VMs named my-vm-01 to my-vm-05.
Harvester CLI is functional but needs a number of improvements: up-to-date functionality with Harvester v1.0.2 (some minor issues right now), modifying the default behaviour to create an opensuse VM instead of an ubuntu VM, solve some bugs, etc.
Github Repo for Harvester CLI: https://github.com/belgaied2/harvester-cli
Done in previous Hackweeks
- Create a Github actions pipeline to automatically integrate Harvester CLI to Homebrew repositories: DONE
- Automatically package Harvester CLI for OpenSUSE / Redhat RPMs or DEBs: DONE
Goal for this Hackweek
The goal for this Hackweek is to bring Harvester CLI up-to-speed with latest Harvester versions (v1.3.X and v1.4.X), and improve the code quality as well as implement some simple features and bug fixes.
Some nice additions might be: * Improve handling of namespaced objects * Add features, such as network management or Load Balancer creation ? * Add more unit tests and, why not, e2e tests * Improve CI * Improve the overall code quality * Test the program and create issues for it
Issue list is here: https://github.com/belgaied2/harvester-cli/issues
Resources
The project is written in Go, and using client-go the Kubernetes Go Client libraries to communicate with the Harvester API (which is Kubernetes in fact).
Welcome contributions are:
- Testing it and creating issues
- Documentation
- Go code improvement
What you might learn
Harvester CLI might be interesting to you if you want to learn more about:
- GitHub Actions
- Harvester as a SUSE Product
- Go programming language
- Kubernetes API
- Kubevirt API objects (Manipulating VMs and VM Configuration in Kubernetes using Kubevirt)
