TechnologyExplain Like I'm 5Intermediate
Production Kubernetes Across Environments, a free technology course on Tomo

Production Kubernetes Across Environments

Bridge the gap between basic container concepts and running reliable clusters across Google Cloud, self-hosted GitHub Actions runners, bare metal, and Talos Linux.

Like Duolingo, but for Production Kubernetes Across Environments. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

24 levels across 4 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Managed Kubernetes on Google Cloud, Scalable CI/CD with Kubernetes Runners, Kubernetes on Bare Metal and On-Premises, and Modern Immutable Infrastructure with Talos Linux. It assumes you already know the basics.

24 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Kubo the Koala, the guide who teaches the Production Kubernetes Across Environments course
Production Kubernetes Across Environments
with Kubo the Koala
24
Levels
4
Sections
5
Min/day
What you'll learn

Key ideas in Production Kubernetes Across Environments

  • Autopilot manages nodes automatically and restricts SSH, hostPath, and privileged DaemonSets.
  • Standard mode grants full access to node pools, custom machine types, and underlying VM config.
  • Autopilot bills per requested Pod resource, while Standard bills for provisioned worker VMs.
  • Workload Identity maps a Kubernetes ServiceAccount to an IAM ServiceAccount in Google Cloud.
  • The GKE metadata server intercepts Pod token requests to fetch short-lived OAuth tokens.
  • Annotating the Kubernetes ServiceAccount tells GKE which IAM identity to impersonate.
  • VPC-native clusters allocate secondary subnet IP ranges directly to Pods via alias IPs.
  • Routes-based clusters rely on static VPC routing tables that hit network scale limits.
  • Alias IPs eliminate the performance overhead of overlay packet encapsulation networks.
  • Node Auto-Provisioning inspects unscheduled Pod resource requests to create new node pools on the fly.
  • Standard Cluster Autoscaler can only add or remove instances in pre-existing node pools.
  • Node Auto-Provisioning automatically selects the optimal machine family and hardware accelerator.
  • Maintenance windows restrict automated GKE control-plane and node upgrades to defined hours.
  • PodDisruptionBudgets block GKE node draining if eviction would drop replicas below a threshold.
  • Blue-green upgrade strategy creates a new node pool and drains workloads before deleting old nodes.
  • GKE Ingress provisions external Google Cloud Load Balancers outside the cluster.
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Production Kubernetes Across Environments the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Choosing Modes and Connecting Safely

When does your team want GKE Standard mode instead of Autopilot?

Get it right to open this lesson and 23 more in the app.

Course map

How to learn Production Kubernetes Across Environments, step by step

Go in order. 24 short levels across 4 sections, about 48 minutes in all, five minutes a day.

  1. 1

    Managed Kubernetes on Google Cloud

    • Operating Production Clusters on GKE
    • Exposing and Securing Traffic with Cloud-Native Ingress
  2. 2

    Scalable CI/CD with Kubernetes Runners

    • Deploying the Actions Runner Controller (ARC)
    • Hardening and Caching Containerized CI Pipelines
  3. 3

    Kubernetes on Bare Metal and On-Premises

    • Solving On-Premises Ingress and Storage
    • Control Plane Resiliency and Networking on Physical Nodes
  4. 4

    Modern Immutable Infrastructure with Talos Linux

    • Declarative, API-Only Nodes with Talos Linux
    • Cluster Lifecycle and Day-Two Operations in Talos

4 sections · 8 units · 24 levels. Built to play, not to enroll.

Questions

Questions about Production Kubernetes Across Environments

  1. How do I learn Production Kubernetes Across Environments?

    Go in order: start with Managed Kubernetes on Google Cloud, then Scalable CI/CD with Kubernetes Runners, then Kubernetes on Bare Metal and On-Premises, then Modern Immutable Infrastructure with Talos Linux. On Tomo that's 24 short levels, about 48 minutes in all, played five minutes a day. Start free and play the first level in under a minute.

  2. Is there a Duolingo-style app for Production Kubernetes Across Environments?

    Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Production Kubernetes Across Environments is one of its free courses, and you can type any other topic to get a course of your own.

  3. Is the Production Kubernetes Across Environments course free?

    Yes. Production Kubernetes Across Environments is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.

  4. How long does it take to learn Production Kubernetes Across Environments?

    24 levels across 4 sections, about 48 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.

  5. Do I need any background to start Production Kubernetes Across Environments?

    No. It's pitched at an intermediate level, so it starts where you are and builds up. If you can tap a phone, you can start.

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How it's taught

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This course
Explain Like I'm 5

Production Kubernetes Across Environments is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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