Operator SDK basics in Kubernetes - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Operator SDK?

The Operator SDK is a tool that helps developers build Kubernetes operators easily by providing libraries and code scaffolding.

beginner

Which programming languages can you use with Operator SDK?

You can use Go, Ansible, or Helm to build operators with the Operator SDK.

beginner

What is the purpose of an Operator in Kubernetes?

An Operator automates the management of complex applications on Kubernetes, like installing, updating, and handling failures.

intermediate

What command initializes a new Operator project using the Operator SDK CLI?

The command is operator-sdk init --domain=example.com --repo=github.com/example/memcached-operator.

intermediate

How does the Operator SDK help with Custom Resource Definitions (CRDs)?

It helps generate and manage CRDs, which define the custom resources your Operator will manage.

What is the main role of the Operator SDK?

A To replace Kubernetes API server

B To help build Kubernetes operators easily

C To manage Docker containers directly

D To monitor Kubernetes cluster health

The Operator SDK is designed to simplify building Kubernetes operators.

Which of these languages is NOT supported by Operator SDK for building operators?

A Python

B Go

C Ansible

D Helm

Operator SDK supports Go, Ansible, and Helm, but not Python directly.

What does the command operator-sdk init do?

A Updates Kubernetes cluster

B Deploys the Operator to the cluster

C Creates a new Operator project scaffold

D Deletes an existing Operator

The init command sets up a new Operator project structure.

What is a Custom Resource Definition (CRD) in Kubernetes?

A A Kubernetes network policy

B A built-in Kubernetes service

C A container image format

D A way to define new resource types

CRDs let you create new resource types Kubernetes can manage.

Which Operator SDK component helps automate application lifecycle tasks?

A The Operator controller

B The Kubernetes scheduler

C The Docker daemon

D The kubelet

The Operator controller watches resources and automates tasks.

Explain what the Operator SDK is and why it is useful in Kubernetes.

Think about how it helps developers automate tasks.

Describe the role of Custom Resource Definitions (CRDs) in the Operator SDK workflow.

CRDs let Kubernetes understand new resource types.