Book Image

OpenStack Essentials - Second Edition

By : Dan Radez
Book Image

OpenStack Essentials - Second Edition

By: Dan Radez

Overview of this book

OpenStack is a widely popular platform for cloud computing. Applications that are built for this platform are resilient to failure and convenient to scale. This book, an update to our extremely popular OpenStack Essentials (published in May 2015) will help you master not only the essential bits, but will also examine the new features of the latest OpenStack release - Mitaka; showcasing how to put them to work straight away. This book begins with the installation and demonstration of the architecture. This book will tech you the core 8 topics of OpenStack. They are Keystone for Identity Management, Glance for Image management, Neutron for network management, Nova for instance management, Cinder for Block storage, Swift for Object storage, Ceilometer for Telemetry and Heat for Orchestration. Further more you will learn about launching and configuring Docker containers and also about scaling them horizontally. You will also learn about monitoring and Troubleshooting OpenStack.
Table of Contents (20 chapters)
OpenStack Essentials Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Monitoring network services


Next, let's take a look at monitoring networking services. Networking services in general usually stay running, and things that go wrong are happening inside the running service. We will go ahead and put a service status check on each of them and add additional checks to make sure things are working across the board. Start with giving each of the network services a service status check – the same checks that the control services got:

neutron-dhcp-agent
neutron-l3-agent
neutron-lbaas-agent
neutron-metadata-agent
neutron-metering-agent
neutron-openvswitch-agent
neutron-ovs-cleanup
openvswitch

Now, let's look at what can be monitored to make sure that when these services say that they are running, the network service is actually running. The configuration we have used in this book uses VXLAN tunnels to build overlay networks for OpenStack tenants. What this means is that each compute node is connected to the network node and to each other with VXLAN tunnels that encapsulate...