mikrolite - a cli to create lighweight Kubernetes clusters using microvms
an invention by rcase
Updated about 1 year ago. 1 hackers ♥️. 2 followers.

Project Description

This project will create a CLI utility that will use "microvm" technology (a.k.a. lightweight virtualization) to enable users to create virtual machines and compose these into Kubernetes clusters.

The experience may look something like this (dependent on whether args & config file are supported), to create a VM:

bash mikrolite vm create --name vm1 --root-image ghcr.io/baseimages/myimage:latest --user-data ud.txt --kernel-cmdline= .... mikrolite vm create --config spec.json

Or if you want to create a Kubernetes cluster (which will automatically create the required vms):

bash mikrolite cluster create --name test1 --cp-count=3 --worker-count=3 --cp-root-image=ghcr.io/baseimages/myimage:latest --bootstrap rke2 ... mikrolite cluster create --config spec.json

Goal for this Hackweek

The goal of the hackweek is to get to a working prototype that does the following:

  • create/delete vms
  • create/delete cluster using k3s or rke2

There is a new GitHub org to contain this project

Resources

Eventually, it would be good to support multiple microvm implementations (so we need suitable abstractions in code). For hack week, we will add support for either of these, this can be decided upfront or on the first day:

  • Firecracker - the cool kids choice, is used to power AWS Fargate and AWS Lambda.
  • Cloud Hypervisor - more feature rich, supports PCI passthrough, Windows, confidential compute etc

Working with raw filesystems is painful, so we could use containers and the containerd devmapper snapshotter for volumes. If we want to use config files then we can consider using CUE to validate the config files.

Ideally we would like to allow plugins for the microvm and kubernetes bootstrapper.

Looking for hackers with the skills:

virtualization kubernetes firecracker cloud-hypervisor vm

This project is part of:

Hack Week 23

Activity

  • about 1 year ago: ademicev0 joined this project.
  • about 1 year ago: rcase liked this project.
  • about 1 year ago: rcase added keyword "virtualization" to this project.
  • about 1 year ago: rcase added keyword "kubernetes" to this project.
  • about 1 year ago: rcase added keyword "firecracker" to this project.
  • about 1 year ago: rcase added keyword "cloud-hypervisor" to this project.
  • about 1 year ago: rcase added keyword "vm" to this project.
  • about 1 year ago: rcase started this project.
  • about 1 year ago: rcase originated this project.


    • Comments

    • rcase
      about 1 year ago by rcase | Reply

      GitHub org and repo's created for this.

    • rcase
      about 1 year ago by rcase | Reply

      Initial working version has been created: https://github.com/mikrolite/mikrolite

    Similar Projects

    Contribute to terraform-provider-libvirt by pinvernizzi

    Description

    The SUSE Manager (SUMA) teams' main tool for infrastructure automation, Sumaform, largely relies on terraform-provider-libvirt. That provider is also widely used by other teams, both inside and outside SUSE.

    It would be good to help the maintainers of this project and give back to the community around it, after all the amazing work that has been already done.

    If you're interested in any of infrastructure automation, Terraform, virtualization, tooling development, Go (...) it is also a good chance to learn a bit about them all by putting your hands on an interesting, real-use-case and complex project.

    Goals

    • Get more familiar with Terraform provider development and libvirt bindings in Go
    • Solve some issues and/or implement some features
    • Get in touch with the community around the project

    Resources

    Harvester Packer Plugin by mrohrich

    Description

    Hashicorp Packer is an automation tool that allows automatic customized VM image builds - assuming the user has a virtualization tool at their disposal. To make use of Harvester as such a virtualization tool a plugin for Packer needs to be written. With this plugin users could make use of their Harvester cluster to build customized VM images, something they likely want to do if they have a Harvester cluster.

    Goals

    Write a Packer plugin bridging the gap between Harvester and Packer. Users should be able to create customized VM images using Packer and Harvester with no need to utilize another virtualization platform.

    Resources

    Hashicorp documentation for building custom plugins for Packer https://developer.hashicorp.com/packer/docs/plugins/creation/custom-builders

    Source repository of the Harvester Packer plugin https://github.com/m-ildefons/harvester-packer-plugin

    SUSE KVM Best Practices by roseswe

    Description

    SUSE Best Practices around KVM, especially for SAP workloads. Early Google presentation already made from various customer projects and SUSE sources.

    Goals

    Complete presentation we can reuse in SUSE Consulting projects

    Resources

    KVM (virt-manager) images

    SUSE/SAP/KVM Best Practices

    • https://documentation.suse.com/en-us/sles/15-SP6/single-html/SLES-virtualization/
    • SAP Note 1522993 - "Linux: SAP on SUSE KVM - Kernel-based Virtual Machine" && 2284516 - SAP HANA virtualized on SUSE Linux Enterprise hypervisors https://me.sap.com/notes/2284516
    • SUSECon24: [TUTORIAL-1253] Virtualizing SAP workloads with SUSE KVM || https://youtu.be/PTkpRVpX2PM
    • SUSE Best Practices for SAP HANA on KVM - https://documentation.suse.com/sbp/sap-15/html/SBP-SLES4SAP-HANAonKVM-SLES15SP4/index.html

    Extending KubeVirtBMC's capability by adding Redfish support by zchang

    Description

    In Hack Week 23, we delivered a project called KubeBMC (renamed to KubeVirtBMC now), which brings the good old-fashioned IPMI ways to manage virtual machines running on KubeVirt-powered clusters. This opens the possibility of integrating existing bare-metal provisioning solutions like Tinkerbell with virtualized environments. We even received an inquiry about transferring the project to the KubeVirt organization. So, a proposal was filed, which was accepted by the KubeVirt community, and the project was renamed after that. We have many tasks on our to-do list. Some of them are administrative tasks; some are feature-related. One of the most requested features is Redfish support.

    Goals

    Extend the capability of KubeVirtBMC by adding Redfish support. Currently, the virtbmc component only exposes IPMI endpoints. We need to implement another simulator to expose Redfish endpoints, as we did with the IPMI module. We aim at a basic set of functionalities:

    • Power management
    • Boot device selection
    • Virtual media mount (this one is not so basic add-emoji )

    Resources

    Technical talks at universities by agamez

    Description

    This project aims to empower the next generation of tech professionals by offering hands-on workshops on containerization and Kubernetes, with a strong focus on open-source technologies. By providing practical experience with these cutting-edge tools and fostering a deep understanding of open-source principles, we aim to bridge the gap between academia and industry.

    For now, the scope is limited to Spanish universities, since we already have the contacts and have started some conversations.

    Goals

    • Technical Skill Development: equip students with the fundamental knowledge and skills to build, deploy, and manage containerized applications using open-source tools like Kubernetes.
    • Open-Source Mindset: foster a passion for open-source software, encouraging students to contribute to open-source projects and collaborate with the global developer community.
    • Career Readiness: prepare students for industry-relevant roles by exposing them to real-world use cases, best practices, and open-source in companies.

    Resources

    • Instructors: experienced open-source professionals with deep knowledge of containerization and Kubernetes.
    • SUSE Expertise: leverage SUSE's expertise in open-source technologies to provide insights into industry trends and best practices.

    Small healthcheck tool for Longhorn by mbrookhuis

    Project Description

    We have often problems (e.g. pods not starting) that are related to PVCs not running, cluster (nodes) not all up or deployments not running or completely running. This all prevents administration activities. Having something that can regular be run to validate the status of the cluster would be helpful, and not as of today do a lot of manual tasks.

    As addition (read enough time), we could add changing reservation, adding new disks, etc. --> This didn't made it. But the scripts can easily be adopted.

    This tool would decrease troubleshooting time, giving admins rights to the rancher GUI and could be used in automation.

    Goal for this Hackweek

    At the end we should have a small python tool that is doing a (very) basic health check on nodes, deployments and PVCs. First attempt was to make it in golang, but that was taking to much time.

    Overview

    This tool will run a simple healthcheck on a kubernetes cluster. It will perform the following actions:

    • node check: This will check all nodes, and display the status and the k3s version. If the status of the nodes is not "Ready" (this should be only reported), the cluster will be reported as having problems

    • deployment check: This check will list all deployments, and display the number of expected replicas and the used replica. If there are unused replicas this will be displayed. The cluster will be reported as having problems.

    • pvc check: This check will list of all pvc's, and display the status and the robustness. If the robustness is not "Healthy", the cluster will be reported as having problems.

    If there is a problem registered in the checks, there will be a warning that the cluster is not healthy and the program will exit with 1.

    The script has 1 mandatory parameter and that is the kubeconf of the cluster or of a node off the cluster.

    The code is writen for Python 3.11, but will also work on 3.6 (the default with SLES15.x). There is a venv present that will contain all needed packages. Also, the script can be run on the cluster itself or any other linux server.

    Installation

    To install this project, perform the following steps:

    • Create the directory /opt/k8s-check

    mkdir /opt/k8s-check

    • Copy all the file to this directory and make the following changes:

    chmod +x k8s-check.py

    Harvester Packer Plugin by mrohrich

    Description

    Hashicorp Packer is an automation tool that allows automatic customized VM image builds - assuming the user has a virtualization tool at their disposal. To make use of Harvester as such a virtualization tool a plugin for Packer needs to be written. With this plugin users could make use of their Harvester cluster to build customized VM images, something they likely want to do if they have a Harvester cluster.

    Goals

    Write a Packer plugin bridging the gap between Harvester and Packer. Users should be able to create customized VM images using Packer and Harvester with no need to utilize another virtualization platform.

    Resources

    Hashicorp documentation for building custom plugins for Packer https://developer.hashicorp.com/packer/docs/plugins/creation/custom-builders

    Source repository of the Harvester Packer plugin https://github.com/m-ildefons/harvester-packer-plugin

    Extending KubeVirtBMC's capability by adding Redfish support by zchang

    Description

    In Hack Week 23, we delivered a project called KubeBMC (renamed to KubeVirtBMC now), which brings the good old-fashioned IPMI ways to manage virtual machines running on KubeVirt-powered clusters. This opens the possibility of integrating existing bare-metal provisioning solutions like Tinkerbell with virtualized environments. We even received an inquiry about transferring the project to the KubeVirt organization. So, a proposal was filed, which was accepted by the KubeVirt community, and the project was renamed after that. We have many tasks on our to-do list. Some of them are administrative tasks; some are feature-related. One of the most requested features is Redfish support.

    Goals

    Extend the capability of KubeVirtBMC by adding Redfish support. Currently, the virtbmc component only exposes IPMI endpoints. We need to implement another simulator to expose Redfish endpoints, as we did with the IPMI module. We aim at a basic set of functionalities:

    • Power management
    • Boot device selection
    • Virtual media mount (this one is not so basic add-emoji )

    Resources

    Install Uyuni on Kubernetes in cloud-native way by cbosdonnat

    Description

    For now installing Uyuni on Kubernetes requires running mgradm on a cluster node... which is not what users would do in the Kubernetes world. The idea is to implement an installation based only on helm charts and probably an operator.

    Goals

    Install Uyuni from Rancher UI.

    Resources