Book Image

OpenStack Orchestration

By : Adnan Ahmed Siddiqui
Book Image

OpenStack Orchestration

By: Adnan Ahmed Siddiqui

Overview of this book

This book is focused on setting up and using one of the most important services in OpenStack orchestration, Heat. First, the book introduces you to the orchestration service for OpenStack to help you understand the uses of the templating mechanism, complex control groups of cloud resources, and huge-potential and multiple-use cases. We then move on to the topology and orchestration specification for cloud applications and standards, before introducing the most popular IaaS cloud framework, Heat. You will get to grips with the standards used in Heat, overview and roadmap, architecture and CLI, heat API, heat engine, CloudWatch API, scaling principles, JeOS and installation and configuration of Heat. We wrap up by giving you some insights into troubleshooting for OpenStack. With easy-to-follow, step-by-step instructions and supporting images, you will be able to manage OpenStack operations by implementing the orchestration services of Heat.
Table of Contents (14 chapters)
OpenStack Orchestration
About the Author
About the Reviewers
Stack Group of Connected Cloud Resources

Chapter 7. Troubleshooting Heat

In the previous chapters, we talked about how to set up and run OpenStack Heat in detail. We tried to cover almost every aspect of Heat. This included the basic architecture of Heat, the main components of Heat, which build up the Orchestration service for OpenStack, Heat message flow, and the command-line arguments accepted by the Heat CLI. The Heat template formats and structures supported by Heat were also discussed. Finally, we explained the message flow for Heat.

In this chapter, we will focus on troubleshooting the issues encountered with Heat. The issues discussed in this chapter are:

  • VM instances cannot connect to the external network or the Internet

  • Error received during installation: Unable to write random state

  • Timeout error received while running jeos_create during customization

  • A template running with incorrect parameters cannot be deleted

  • Error: Internal error process exited while connecting to the monitor

  • It takes too long to create a JeOS

  • Error: Quota...