Set Uyuni to manage edge clusters at scale
a project by RDiasMateus
Updated about 2 hours ago. No love. 1 follower.

Description

Prepare a Poc on how to use MLM to manage edge clusters. Those cluster are normally equal across each location, and we have a large number of them.

The goal is to produce a set of sets/best practices/scripts to help users manage this kind of setup.

Goals

step 1: Manual set-up

Goal: Have a running application in k3s and be able to update it using System Update Controler (SUC)

  • Deploy Micro 6.2 machine

  • Deploy k3s - single node

    • https://docs.k3s.io/quick-start

  • Build/find a simple web application (static page)

    • Build/find a helmchart to deploy the application

  • Deploy the application on the k3s cluster

  • Prepare a SUC to update the application, k3s application (OS Updates?)

    • https://github.com/rancher/system-upgrade-controller
    • https://documentation.suse.com/cloudnative/k3s/latest/en/upgrades/automated.html

step 2: Automate day 2

Goal: Trigger the application deployment and update from MLM

  • Salt states (with static data)
    • Deploy the application helmchart, if not present
    • Update/deploy the SUC?
    • Update/deploy the SUC CRD with the update procedure
  • Link it to GIT
    • Define how to link the state to the machines (based in some pillar data? Using configuration channels by importing the state?)
    • Update git SUC - CR and apply the state to trigger the update of the machine.
  • Recurrent state applying configuration channel?

step 3: Customize salt states

Goal: Usability on how to set the installation version.

  • Do we need to customize the pillar data when setup the salt states from step 2?

  • Provide a mechanism to customize salt states (application version) based on pillar

    • Pillars can be set on GIT, and we can have a heararquy definition. Test on how to set pillar specific to minions. How to set pillars for each machine or groups of machines? Use System groups (only exposes groupid, would need some small code changes) or glue with Configuration Channels?
    • Where to store the pillar data? Git pillar data or should/can we have it on MLM?

  • Another option could be to define a new salt formula where we can have a UI to collect the pillar data, and customize the pillar

    • The formula state can be just include the state on git

step 4: Scale it

  • Make it work on HUB deployment, with more then 1 peripheral server.

step 5: Build a customized image for provisioning

  • Build a deployable image with k3s
  • Should we have an ignition script that downloads the bootstrap script and runs it?
    • An alternative would be to have the agent pre-installed
    • We would need to have the MLM server FQDN pre-defined

Resources

Join this project

Looking for hackers with the skills:

uyuni susemanager edge

This project is part of:

Hack Week 25

Activity

  • about 2 hours ago: RDiasMateus added keyword "susemanager" to this project.
  • about 2 hours ago: RDiasMateus added keyword "edge" to this project.
  • about 2 hours ago: RDiasMateus started this project.
  • about 2 hours ago: RDiasMateus added keyword "uyuni" to this project.
  • about 2 hours ago: RDiasMateus originated this project.


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