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OpenStack Networking Cookbook

You're reading from   OpenStack Networking Cookbook Harness the power of OpenStack Networking for public and private clouds using 90 hands-on recipes

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Product type Paperback
Published in Oct 2015
Publisher
ISBN-13 9781785286100
Length 282 pages
Edition 1st Edition
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Authors (2):
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Sriram Subramanian Sriram Subramanian
Author Profile Icon Sriram Subramanian
Sriram Subramanian
Chandan Dutta Chandan Dutta
Author Profile Icon Chandan Dutta
Chandan Dutta
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Toc

Table of Contents (14) Chapters Close

Preface 1. Getting Started with OpenStack Networking FREE CHAPTER 2. Using Open vSwitch for VLAN-Based Networks 3. Exploring Other Network Types in Neutron 4. Exploring Overlay Networks with Neutron 5. Managing IP Addresses in Neutron 6. Using Routing Services in Neutron 7. Using Neutron Security and Firewall Services 8. Using HAProxy for Load Balancing 9. Monitoring OpenStack Networks 10. Writing Your Own Neutron ML2 Mechanism Driver 11. Troubleshooting Tips for Neutron 12. Advanced Topics Index

Troubleshooting a VM that does not get external Network access


In this recipe, we will look at some of the reasons where the VM might not get external Network access in OpenStack.

To provide external access to your VM, you must fulfill the following prerequisites:

  • Your VM must be connected to a Router

  • The Router must have its external gateway set

Getting ready

The following information is required for this recipe:

  • OpenStack Horizon access as an administrator

  • SSH-based login credentials for the Controller and Network node

  • SSH-based login credentials for the Compute node

How to do it…

The following steps will show you how to troubleshoot the VMs that are unable to access the external Networks:

  1. Log in to Horizon and make sure that the VM is connected to a Router through the internal Network. This can be seen by navigating to Project | Network | Network Topology.

  2. On Horizon, navigate to Project | Network | Router and make sure that the Router has its gateway set. Note the ID for this Router on the Router...

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