Book Image

Mastering CoreOS

By : Sreenivas Makam
Book Image

Mastering CoreOS

By: Sreenivas Makam

Overview of this book

<p>CoreOS makes Google and Amazon-style Cloud infrastructure available for anyone building their own private Cloud. This book covers the CoreOS internals and the technologies used in the deployment of container-based distributed applications. It starts with an overview of CoreOS and distributed application development while sharing knowledge on related technologies. Critical CoreOS services and networking and storage considerations for CoreOS are covered next.</p> <p>In latter half of the book, you will learn about Container runtime systems such as Docker and Rkt and Container Orchestration using Kubernetes. You will also find out about the integration of popular orchestration solutions such as OpenStack, the AWS Container service, and the Google Container Engine with CoreOS and Docker. Lastly, we cover troubleshooting as well as production considerations.</p>
Table of Contents (19 chapters)
Mastering CoreOS
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Other CoreOS debugging tools


We covered basic CoreOS debugging in Chapter 2, Setting Up the CoreOS Lab in the Basic debugging section. The following are a few utilities that can be used:

  • The journalctl utility can be used to check the logs of all systemd services

  • The systemctl utility can be used to check the status of all the services

  • The cloud-config validator tool can be used to validate the cloud-config before using it with CoreOS

  • Utilities such as Etcd, Fleet, Flannel, and Locksmith have their own debugging capabilities that can be turned on if necessary