This course gives a clear insight into how to handle issues in containerized environments for both Docker and Kubernetes.

Troubleshooting containers 3(Docker and Kubernetes-02.png

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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

We want to run a container in detached mode. Which of these flags is the right to add to our `docker run` command?

We want to run a container in detached mode. Which of these flags is the right to add to our <code>docker run</code> command?

We’re getting an error in our docker container. Which of these directories will help us with the logs?

We’re getting an error in our docker container. Which of these directories will help us with the logs?

`docker network inspect -f '{{range .IPAM.}}{{.Subnet}}{{end}}' <network name>`

`docker network inspect -f '{{range .IPAM.Config}}{{.Subnet}}{{end}}' <network_name>`

`docker network inspect -f '{{range .IPAM.Config}}{{.}}{{end}}' <container name>`

`docker network -f '{{range .IPAM.Config}}{{.Subnet}}{{end}}' <container name>`

Which command can we use to get the subnet of a network?

Which command can we use to get the subnet of a network?

We have a container that was running initially but stopped. Which type of navigation method will we need for it?

We have a container that was running initially but stopped. Which type of navigation method will we need for it?

Docker images used for launching containers

Images that are still used in a running container

Images found in the environment from exited containers or failed pods

Which command can we use to open a crontab file?

Which command can we use to open a crontab file?

Test yourself on what you’ve learned so far in this chapter.

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

Quiz: Troubleshooting Docker