OpenStack Orchestration电子书

OpenStack Orchestration

Table of Contents

OpenStack Orchestration

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Why subscribe?

Free access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. Getting Started with the Orchestration Service for OpenStack

Introduction to the OpenStack architecture

Horizon

Nova

Neutron

Swift

Cinder

Keystone

Glance

Ceilometer

Heat

Trove

The Orchestration service for OpenStack

The Heat workflow

The Orchestration authorization model

Password authorization

Keystone trusts authorization

Trusts authorization execution

The authorization model configuration

Stack domain users

Configuring stack domain users

Creating a stack

Summary

2. The OpenStack Architecture

Components of OpenStack

OpenStack node types

The OpenStack logical architecture

TOSCA – Heat ideas and standards

Heat components

The Heat CLI

heat-api

heat-api-cfn

heat-engine

Heat Orchestration Template (HOT) specification

The example architecture 1 (based on the Nova network)

Node hardware specifications

An overview

A detailed description

The example architecture 2 (based on Neutron)

Network layout for OpenStack networking

The internal network

The public network

The VM traffic network (private network)

The physical connectivity of nodes

Individual node connectivity diagrams

Controller nodes

Compute nodes

Network nodes

Storage nodes

Summary

3. Stack Group of Connected Cloud Resources

Heat basics

Stacks

Templates

CFN

Heat Orchestration Template (HOT)

The HOT template example

Heat_template_version

Description

Resources

Properties or parameters

Resource types

Autoscaling

Vertical scaling versus horizontal scaling

Vertical scaling

Horizontal scaling

Autoscaling with Heat

How autoscaling works in Heat

High availability

Stateless versus stateful services

Active/Passive

Active/Active

HA mechanisms for different levels

Horizontal scaling and databases

The approach – the metadata server and cfn-hup

cfn-hup

The metadata server

Benefits

Summary

4. Installation and Configuration of the Orchestration Service

Orchestration module concepts

Installing and configuring Orchestration

Installing and configuring the Orchestration components

Finalize installation

Verify operations

OpenStack Heat installation

Creating a stack with Heat

Creating an advanced template for Heat

Creating a stack

Verifying a stack

Summary

5. Working with Heat

Standards used in Heat

Amazon CloudFormation

Simplified infrastructure management

A quick replication of services

Track changes and control

The TOSCA standard

Heat overview and roadmap

The Heat architecture and CLI

The Heat command-line reference

Usage

Getting help

Heat subcommands

Heat optional arguments

The Heat basic workflow

The Heat CLI tools

The Heat API

The Heat CloudWatch API

Message queue (MQ)

The Heat engine

Heat autoscaling principles

JeOS

Summary

6. Managing Heat

Heat and DevStack

The event stack list

Get the stack list

Create a stack

Show stack details

Show resource details

Update a stack

Delete a stack

The template structure

The CloudFormation template

The AWS template format version

Description

Metadata

Parameters

Mappings

Conditions

Resources

Outputs

Summary

7. Troubleshooting Heat

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 monitor

It takes too long to create a JeOS

Error – Quota exceeded: code=InstanceLimitExceeded (HTTP 413)

Error – Response from Keystone does not contain a Heat endpoint

Error – Internal Server Error

Error – Provided KeyName is not registered with Nova

A template is not working after editing

Instances shutdown immediately after creation

Yum update fails with dependency problems related to the oz package

Failed to start qpidd

OpenStack daemons can't connect to qpidd

Ubuntu VMs cannot receive DHCP assignments from hosts running CentOS/Fedora

Debugging OpenStack Heat

Heat list returns 503 error

Heat list hangs up

Troubleshooting common OpenStack errors

Error – internal error Failed to create mDNS client: Daemon not running

The solution

Error – Failed to add image

Keystone ValueError – you need to pass either an existing engine or a database uri

Error – No handlers could be found for logger keystoneclient.client

Error – Access denied for user 'keystone'@'openstack1' (using password: YES)

Error – Connect error/bad request to Auth service at URL %(url)s

Summary

Index