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Lab 2

Build a Kubernetes Application

Novices | ~ 1 hour

Learn about building an application in Kubernetes

How to build container images
Running your application on Kubernetes
Tools to improve your workflow
Kubestr overview

Prerequisites

Read Blog

Building a Kubernetes application

Thomas Keenan • Instructor • Mentor • Contributor

in K10, Data Protection, Kubernetes, Community

Watch Video

Lab 2 Video Overview

Review Slides

Lab 2 Slides

Hands-On Lab #2

Build a Kubernetes Application

Start Lab #2

Ratings and Reviews

4.8

Avg. Rating

249 Ratings

5

194

4

47

3

8

2

0

1

0

What's your experience? We'd love to know!

hl

Posted 3 months ago

learning

cant download ebook. URL seems to have bad reputation that it was blocked ?

Eza

Posted 3 months ago

time too short

I would like to have a downloadable paper with the commands and instructions provided during the hands-on lab.

Suraj

Posted 3 months ago

good

nice

Mohamed A. Hassan

Posted 3 months ago

Kubestr

the bench marking feature

emaa_forlin

Posted 3 months ago

Easily compressive

Is very simple but complete, includes another tools that are used in k8s developments

kapil

Posted 3 months ago

Don't auto move to next step

In Hands-on, I think it would be great to give users an option to proceed further than auto moving after clicking on check

akhil

Posted 3 months ago

You are awesome

You are awesome

ashwanic

Posted 3 months ago

Nothing else to do with the labs

Nothing else to do with the labs

jalbaladejo

Posted 3 months ago

very interesting

many thanks

sanyam96

Posted 3 months ago

nice

nice

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What's your experience? We'd love to know!

Lab Content

Lab 2: Build a Kubernetes Application

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Lab 2 background

This lab is for those who are new to building applications to run on Kubernetes or want a refresher. It covers:

How to build container images
How to run your application directly and locally on Kubernetes
Tools you can use to improve your workflow
How to manage manifests for deployment.
Kubestr, an open source collection of tools to discover, validate and evaluate your Kubernetes storage options.

Is there pre-work for the lab?

Yes. Be sure to complete reading and studying this blog, the video description of the work to be performed during the lab, and the accompanying slides.

What is the structure of the lab?

The lab consists of two sections, both of which are approximately 40 minutes long. Your time may vary, depending on how quickly you pass either section.

Section 1 — Applications Background

This section will cover background topics and terminology for the relevance and use of applications in the Kubernetes world. Each topic will provide some review material on screen first, then pose a challenge question. You must answer the question correctly to proceed to the next section. You’ll learn:

The what how and why of container images
How containers relate to applications
Stateless applications
- Short term apps that do not retain data regarding a transaction - (e.g. print services, microservices)
Stateful applications
- Applications that typically use a database (e.g. MySQL) and process a read/write and thus retain information regarding each transaction involved
Options for running applications locally/remotely/other
Tools to help you build an application
What’s involved in managing manifests

Section 2 — Hands-on Commands - Build an application

This section will cover Kubernetes keyboard commands needed to set up and scale an application in Kubernetes. Specific commands covered include:

Discovering K8s storage
- Kubectl get storage class
Choosing a data service- MySql (stateful data services and volume focus)
- Applying use case (PetClinic) for MySql
Installing the app
Exploring the app
Using it as a service to expose the app
Running multiple instances of the app
Scaling your app
Performing a rolling update
Adding data
Exploring persistent volume/ volume claim

In the more advanced section of the hands-on portion, you’ll learn how to install Kubestr, an open source collection of tools to discover, validate and evaluate your Kubernetes storage options. Kubestr can:

Identify various storage options present in a cluster
Validate if storage options are configured correctly
Evaluate storage using common benchmarking tools such as FIO

Here’s a summary of the steps we’ll take as we install Kubester during the lab:

1) Install Kubestr

Ensure that the Kubernetes context is set and the cluster is accessible through your terminal. (Does kubectl work?)
Download the latest release here.
Unpack the tool and make it an executable chmod +x kubestr.

2) Discover available storage options:

Run ./kubestr

3) Run an FIO test:

Run ./kubestr fio -s <storage class>
Additional options like —size and —fiofile can be specified.
For more information visit our fio page.

4) Check a CSI drivers snapshot and restore capabilities:

Run ./kubestr csicheck -s <storage class> -v <volume snapshot class>

5) Install another storage class and use Kubestr to compare the two (GCP storage classes).

6) Link to the Application Transformation lab later to produce a sequence/template.

How do I access Lab 2?

Go to Learning.Kasten.io to start your learning journey! Remember: you can pause during the lab and return to the same spot without losing your place.

All the best, enjoy!