Kubernetes Troubleshooting for Application Developers

Kubernetes

Kubernetes Troubleshooting for Application Developers

Troubleshoot Kubernetes apps using kubectl to fix image pulls, crashes, pending pods, RBAC, network policies, and ingress issues.

Nourhan Khaled

DevOps Engineer

Kubernetes Troubleshooting for Application Developers

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Description

Learning to Kubernetes is one thing, working with Kubernetes however, is an entirely different story. This course is intended to bridge the gap. The focus of this course is to show real-life scenarios that Kubernetes application developers run into in practice.

In this fully hands-on scenario-based course, we will be troubleshooting a variety of issues relating to Kubernetes application development, from crashing pods to unreachable services. By the end of the course, you will be familiar with the commonly encountered issues while working with Kubernetes as well as how to navigate your way around new ones.

What You’ll Learn:

Kubectl Essentials: Revisit fundamental `kubectl` commands with a special focus on commands used for troubleshooting.
Common Errors: Understand, diagnose, and resolve frequent issues such as image pull errors, create container errors, pod crashloopbackoffs and much more.
Practical Tips & Tricks: Learn hands-on tips and tricks that you might not have learned in theory but will definitely need in practice.
Common Kubernetes Pitfalls: Learn how to navigate your way around well-known configuration pitfalls in Kubernetes including deployment configurations, RBAC, and network policies.
New Tools: Add a couple of new Kubernetes tools to your toolset.

This highly practical condensed course is based on scenarios that mimic many of the real-world scenarios that you will encounter when you work with Kubernetes. Complemented by the hands-on labs, this course will ensure you’re well-equipped to handle a wide range of Kubernetes troubleshooting scenarios efficiently.

Target Audience:

Kubernetes application developers and beginners seeking to augment their theoretical knowledge of Kubernetes with practical experience.
DevOps Engineers seeking Kubernetes troubleshooting skills.
Site Reliability Engineers (SREs)
Cloud Engineers managing Kubernetes clusters
Technical Support Engineers focusing on Kubernetes environments
Technical Leads overseeing cloud-native applications

About the instructor

Nourhan Khaled is a DevOps Engineer who finds joy in making things work. Prior to her DevOps career, she had experience developing both web and machine learning applications. She went from developing applications to deploying them, becoming a Certified Kubernetes Application Developer along the way. She particularly enjoys demystifying complex DevOps topics for beginners, passing on the tips and tricks she learns along the way.

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Course Content

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Introduction

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Lesson Content

Module Content

Course Introduction 02:37

Join Our Community

Prerequisites

Topics

Lesson Content

Module Content

kubectl refresher - Intro 00:25

kubectl get 04:29

kubectl describe 02:40

kubectl get events 01:43

kubectl logs 03:01

kubectl logs --label 01:11

kubectl logs --timestamps 01:55

kubectl logs --follow 00:44

kubectl exec 01:27

kubectl port-forward 04:00

kubectl auth can-i 06:00

kubectl top 02:11

kubectl explain 01:42

kubectl diff 01:15

Lab: kubectl refresher

Kubernetes Ephemeral/Debug Containers 11:36

Lab: Kubernetes Ephemeral/Debug Containers

k9s Walkthrough 11:02

Troubleshooting Scenarios

Topics

Lesson Content

Module Content

Image Pull Errors 08:24

Lab: Image Pull Errors

Crashing Pods 13:48

Lab: Crashing Pods

Pending Pods 07:19

Case of the Missing Pods 09:24

Schrödinger's Deployment 06:40

Create Container Errors 06:51

Config Out of Date 08:35

Reloader 04:12

Endlessly Terminating Pods 05:37

Field Immutability 02:57

enableServiceLinks 08:42

Lab: Troubleshooting Combo

Interns can see our secrets! 05:38

Lab: RBAC Troubleshooting

Port Mania 04:36

Unreachable Pods + Leaky Network Policies 17:19

Lab: Troubleshooting Network Policies

What the Ingress? 09:40

Lab: Troubleshooting Ingress

Multi-Attach Volume Errors 11:14

Lab: Troubleshooting Storage

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