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OpenStack Orchestration

OpenStack Orchestration

By : Ahmed Siddiqui
3 (3)
Buy this Book
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OpenStack Orchestration

OpenStack Orchestration

3 (3)
By: Ahmed Siddiqui
Buy this Book

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 (9 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with the Orchestration Service for OpenStack
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1. Getting Started with the Orchestration Service for OpenStack
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Introduction to the OpenStack architecture
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The Orchestration service for OpenStack
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The Heat workflow
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The Orchestration authorization model
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The authorization model configuration
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Stack domain users
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Summary
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2. The OpenStack Architecture
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2. The OpenStack Architecture
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Components of OpenStack
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OpenStack node types
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The OpenStack logical architecture
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TOSCA – Heat ideas and standards
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Heat components
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The example architecture 1 (based on the Nova network)
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The example architecture 2 (based on Neutron)
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Network layout for OpenStack networking
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Summary
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3. Stack Group of Connected Cloud Resources
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3. Stack Group of Connected Cloud Resources
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Heat basics
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Autoscaling
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Summary
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4. Installation and Configuration of the Orchestration Service
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4. Installation and Configuration of the Orchestration Service
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Orchestration module concepts
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OpenStack Heat installation
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Creating a stack with Heat
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Summary
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5. Working with Heat
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5. Working with Heat
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Standards used in Heat
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Heat overview and roadmap
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The Heat architecture and CLI
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The Heat basic workflow
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JeOS
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Summary
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6. Managing Heat
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6. Managing Heat
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Heat and DevStack
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The event stack list
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Get the stack list
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Create a stack
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Show stack details
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Show resource details
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Update a stack
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Delete a stack
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The template structure
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The CloudFormation template
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Summary
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7. Troubleshooting Heat
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7. Troubleshooting Heat
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VM instances cannot connect to the external network or the Internet
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Error received during installation – Unable to write random state
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Timeout error received while running jeos_create during customization
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A template running with incorrect parameters cannot be deleted
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Error – internal error process exited while connecting to monitor
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It takes too long to create a JeOS
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Error – Quota exceeded: code=InstanceLimitExceeded (HTTP 413)
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Error – Response from Keystone does not contain a Heat endpoint
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Error – Internal Server Error
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Error – Provided KeyName is not registered with Nova
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A template is not working after editing
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Instances shutdown immediately after creation
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Yum update fails with dependency problems related to the oz package
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Failed to start qpidd
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OpenStack daemons can't connect to qpidd
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Ubuntu VMs cannot receive DHCP assignments from hosts running CentOS/Fedora
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Debugging OpenStack Heat
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Heat list returns 503 error
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Heat list hangs up
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Troubleshooting common OpenStack errors
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Summary
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Index
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Index

OpenStack node types

In the following table, we will describe the node types that constitute an OpenStack cloud:

Type

Description

Controller

The OpenStack controller node is used to perform the control operations in an OpenStack cloud environment. The main components running on a compute node are:

Identity service (Keystone)

Image service (Glance)

Management functions of compute (Nova)

Networking (Neutron)

Dashboard (Horizon)

It may also include the following optional OpenStack components:

Block storage

Object storage

Orchestration

Telemetry

Besides the preceding core required and optional packages, it also includes some helper packages or applications including:

Database (MySQL or other)

Network Time Protocol (NTP)

Compute

This is the node which runs the virtual machines in a hypervisor portion. OpenStack uses the KVM hypervisor by default. Besides the hypervisor portion, the compute node also runs the agents for networking services that provide connectivity to internal and external...

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