Gain insights into container fundamentals, delve into Docker and Kubernetes, learn about managing clusters, explore fixing network errors, and discover creating robust container infrastructure.

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Troubleshoot

Containers help applications easily be packaged and shipped to any environment. Two of the most popular container tools are Docker and Kubernetes. Depending on their utilization, containers can experience image build, pods and node failures, and communication issues. This course will help you learn how to handle those issues.

This course teaches you what containers are and why they were adopted. You’ll explore Docker images, review log files in Docker, inspect containers, and clean resources while learning to fix issues with Docker image builds and resolving Docker container network errors. Then, you’ll get an overview of Kubernetes, how to manage a cluster and resolve reliability issues, and how to fix pod, network, container, configuration, and ingress issues. Finally, you’ll create a robust container infrastructure.

By the end of this course, you’ll also have a strong grasp on approaching and handling container issues and troubleshooting various issues in Docker and Kubernetes.

Troubleshooting Docker and Kubernetes Containers

apiVersion: v1
kind: Pod
metadata:
  name: app
spec:
  containers:
  - name: container
    image: busybox
    command: ["/bin/sh", "-c", "while true; do echo 'Running...'; sleep 10; done"]
    resources:
      requests:
        cpu: "6"      
        memory: "10Gi" 

# To get pod status
kubectl get pods

# To get logs of pod
kubectl logs <pod_name>

# To get more details on pod
kubectl describe pod <pod_name>

# To edit pod
nano pod.yaml

# To delete a pod
kubectl delete pod <pod_name>

# To create a pod after solving the issue
kubectl apply -f pod.yaml

Challenge yourself by troubleshooting some issues in Kubernetes.

Getting Started

Introducing Troubleshooting Containers

Troubleshooting Docker

Fixing Common Issues with Docker

Resolving Docker Container Networking Errors

Troubleshooting Kubernetes

Troubleshooting Further in Kubernetes

Troubleshooting Docker Image Build Issues

Conclusion

Deploy a Full Stack Web Application over Kubernetes

Challenge: Troubleshooting Kubernetes

Problem 1: Resolving resource error issues