Guided, hints are free
Tutorials
A step-by-step path, with notes and the editor open beside the terminal. To learn something new without getting stuck.
- Progress is saved
- Hints cost nothing
At launch
Launching soon
A real cluster.
Not a simulation.
Klastro starts an isolated Kubernetes cluster in seconds. You do the work inside it, and your result is graded automatically.
The technologies you actually operate during a session
Why Klastro
Nobody learns to fix a cluster by ticking boxes
An engineer picking up Kubernetes has two unsatisfying options. Quiz platforms confirm they memorised the syntax of a manifest, never that they can bring a cluster back up. Demo labs lend them a terminal for twenty minutes and grade nothing: they leave without knowing whether they got it right.
The same gap exists in hiring. A technical interview ends on an impression, or on an algorithm exercise that says nothing about diagnosing a pod that refuses to start. Teams hiring cloud-native engineers know this, and work around it with homegrown tests that are slow to write and impossible to compare between candidates.
Those are two symptoms of one hole: there is no real, disposable infrastructure that a machine can grade. Klastro is that engine. It brings up a dedicated cluster in seconds, lets someone work in it without a safety net, then reads the cluster’s actual state to establish what is done and what is not.
A disposable cluster, graded on its real state. Learning and assessing are then just two ways of looking at the same session.
The category
Quiz platforms test recall. Demo labs grade nothing.
Klastro sits at the intersection of the two: real isolated infrastructure, work that is graded automatically, and a single engine that serves both training and hiring.
| Real, isolated infrastructure | Quiz platforms | Demo labs | Klastro |
|---|---|---|---|
| Real, isolated infrastructure | – | ||
| Automatic, reproducible grading | – | ||
| Live supervision | – | – | |
| Per-session network isolation | – | ||
| One engine for training and hiring | – | – |
From scenario to result, in three moves
Klastro handles the infrastructure. What is left is the work itself.
-
Pick a scenario
A catalogue of cloud-native scenarios, or your own. Each one defines its environment type, the tasks to complete, and the validation rules that grade them.
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Open the environment
A dedicated cluster starts in seconds. Terminal, editor and notes open in the browser. Nothing to install locally.
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Collect the result
Validation rules run against the real cluster state. Learners see their progress, hiring teams get a score they can defend.
Four formats, one engine
Choose how you work
The same real infrastructure, framed around what you are trying to do.
Graded automatically
Challenges
A failure to fix, an objective to reach. Validation rules read the real cluster state and the score lands immediately.
- Visible score
- Attempt history
At launch
Open, no objective
Playgrounds
An empty cluster, yours. To test a change, reproduce an incident or prep a demo, without building a local environment.
- No imposed tasks
- Ready in seconds
At launch
For hiring teams
Assessment
Ordered scenarios under a global timer, live supervision, a score hidden from the candidate, and an exportable report.
- Supervised sessions
- Private scenarios, SSO, EU data residency
Four environments, provisioned on demand
The scenario picks the machine it needs. You configure nothing.
Scroll sideways
Pricing
A real lab burns real resources
Lab time is always metered or capped. No surprises on the invoice.
Community
Free
Enough to touch real infrastructure and find out whether the format suits you.
- Public scenarios and playgrounds
- Credits on sign-up
- Auto-graded challenges
Pro
from €25 per user, per month
Full access to the catalogue, with credits included every month.
- Every scenario, tutorial and challenge
- Credits included, then metered
- Per-member progress tracking
Assessment
A contract product, enabled per organization and set up with our team. Proctoring, SSO, private scenarios, data hosted in the EU.
Indicative pricing, confirmed when the service opens.
Product status
What already runs, and what is next
Klastro is not a waiting page: the engine exists and starts clusters today. Here is where we are, unrounded.
In place
3-
Session engine
Four environment types started on demand, isolated per session, destroyed at the end. This is the hard part, and it works.
-
Automatic grading
Validation rules run against real cluster state and produce a reproducible score, task by task.
-
In-browser workspace
Terminal, instructions and editor in a single tab, with nothing installed on the machine.
In progress
3-
Launch catalogue
The first cloud-native scenarios: guided tutorials, graded challenges and open playgrounds, reviewed one by one before opening.
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Accounts, credits and billing
Sign-up, credit balance and the Pro subscription. This is what stands between the engine and a public opening.
-
Assessment for teams
Supervised sessions, private scenarios and an exportable report. The product runs; we are setting it up with the first pilot teams.
Next
1-
Scenario Studio
An editor for writing your own scenarios and their validation rules without touching YAML. Not started yet.
Common questions
What people ask us before we open.
- When does Klastro open?
- In waves, and without announcing a date we could not hold. The engine already starts clusters; what is left is the launch catalogue and account handling. People who request early access come in first.
- What happens if I request early access?
- You email us and we reply. No form, no tracker, no mailing list: mostly we want to know what you are trying to do, because that decides the order in which we finish the scenarios.
- What exactly is a credit?
- A credit is lab time. The hourly cost depends on the environment: a vcluster burns less than a two-node kubeadm cluster, because it uses fewer resources. Your balance will be visible at all times in the dashboard.
- Do I need to install anything?
- No. The terminal, the editor and the instructions all open in the browser. You need a connection and nothing else.
- Where will my data be hosted?
- In the European Union. Session clusters, the database and the backups all stay in the EU, and every session gets its own isolated network space.
- Is this suitable for CKA, CKAD or CKS prep?
- That is one of our launch goals. Scenarios run on real clusters and are graded against actual cluster state, the way a practical exam works, and timed challenges reproduce the time pressure. Klastro prepares you for those exams; it is not affiliated with or endorsed by the Linux Foundation.
Early access
Open the first cluster with us
We are opening in waves, starting with the people who tell us what they want to do in there. Tell us in one line which side you are on.
or write to us directly at [email protected]
An email that lands in a real inbox. We answer every one.