Cloud & Networking
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You're reading from  OpenStack Essentials. - Second Edition

Product typeBook
Published inAug 2016
PublisherPackt
ISBN-139781786462664
Edition2nd Edition
Tools
OpenStack
Concepts
Cloud Computing
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Author (1)
Dan Radez
Dan Radez
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Dan Radez

Dan Radez joined the OpenStack community in 2012 in an operator role. His experience is focused on installing, maintaining, and integrating OpenStack clusters. He has been given the opportunity to internationally present OpenStack content to a range of audiences of varying expertise. In January 2015, Dan joined the OPNFV community and has been working to integrate RDO Manager with SDN controllers and the networking features necessary for NFV. Dan's experience includes web application programming, systems release engineering, and virtualization product development. Most of these roles have had an open source community focus to them. In his spare time, Dan enjoys spending time with his wife and three boys, training for and racing triathlons, and tinkering with electronics projects.
Read more about Dan Radez

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Troubleshooting Glance image management

It's not often that Glance needs troubleshooting. There are two common ways that you will have things fail related to Glance:

  • If Glance cannot access the filesystem that it will be writing to when it is saving an image into the registry

  • If Nova cannot get an image that has been assigned to launch an instance with

In the event that you are not able to save an image to the registry, you will just have to read the logs in /var/log/glance/*. Depending on the backing store that you have chosen, or that has been configured for you, there will be different errors. In most cases, when you resolve these errors, you will have a working Glance service.

When a new instance is launched on a compute node, one of the things that the Nova compute service does is to check whether it has a cached copy of the image that the instance is being launched from on the compute node. If it does, it will use the local cache; if it does not, it will connect to Glance and download...

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OpenStack Essentials. - Second Edition
Published in: Aug 2016Publisher: PacktISBN-13: 9781786462664
© 2016 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Dan Radez

Dan Radez joined the OpenStack community in 2012 in an operator role. His experience is focused on installing, maintaining, and integrating OpenStack clusters. He has been given the opportunity to internationally present OpenStack content to a range of audiences of varying expertise. In January 2015, Dan joined the OPNFV community and has been working to integrate RDO Manager with SDN controllers and the networking features necessary for NFV. Dan's experience includes web application programming, systems release engineering, and virtualization product development. Most of these roles have had an open source community focus to them. In his spare time, Dan enjoys spending time with his wife and three boys, training for and racing triathlons, and tinkering with electronics projects.
Read more about Dan Radez

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