Jump right into Kubernetes development with career-focused lessons and hands-on practice.

DevOps for Developers

Kubernetes is a powerful container management tool that's taking the world by storm. This detailed course will help you master it.

In this course, you'll start with the fundamentals of Kubernetes and what the main components of a cluster look like. You'll then learn how to use those components to build, test, deploy, and upgrade applications, as well as how to achieve state persistence once your application is deployed. You'll also learn how to secure your deployments and manage resources, which are crucial DevOps skills.

By the time you're done, you'll have a firm grasp on what Kubernetes is, as well as the skills to deploy your own clusters and applications with confidence.

A Practical Guide to Kubernetes


The **output**, limited to the relevant parts, is as follows.

...
Containers:
  db:
    ...
    Limits:
      cpu:    100m
      memory: 100Mi
    Requests:
      cpu:    10m
      memory: 50Mi
...
QoS Class:       Burstable
...

The Pod is assigned `Burstable` QoS.
>**Note:** Its limits are different from requests, so it did not qualify for Guaranteed QoS. 

Since its resources are set, and it is not eligible for Guaranteed QoS, Kubernetes assigned it the second best QoS.
# Checking QoS with a modified definition
Now, let's look at a slightly modified definition `go-demo-2-qos.yml`.

Examining QoS in Action

Checking QoS with initial definition