Book Image

Production Ready OpenStack - Recipes for Successful Environments

By : Arthur Berezin
Book Image

Production Ready OpenStack - Recipes for Successful Environments

By: Arthur Berezin

Overview of this book

OpenStack is the most popular open source cloud platform used by organizations building internal private clouds and by public cloud providers. OpenStack is designed in a fully distributed architecture to provide Infrastructure as a Service, allowing us to maintain a massively scalable cloud infrastructure. OpenStack is developed by a vibrant community of open source developers who come from the largest software companies in the world. The book provides a comprehensive and practical guide to the multiple uses cases and configurations that OpenStack supports. This book simplifies the learning process by guiding you through how to install OpenStack in a single controller configuration. The book goes deeper into deploying OpenStack in a highly available configuration. You'll then configure Keystone Identity Services using LDAP, Active Directory, or the MySQL identity provider and configure a caching layer and SSL. After that, you will configure storage back-end providers for Glance and Cinder, which will include Ceph, NFS, Swift, and local storage. Then you will configure the Neutron networking service with provider network VLANs, and tenant network VXLAN and GRE. Also, you will configure Nova's Hypervisor with KVM, and QEMU emulation, and you will configure Nova's scheduler filters and weights. Finally, you will configure Horizon to use Apache HTTPD and SSL, and you will customize the dashboard's appearance.
Table of Contents (16 chapters)
Production Ready OpenStack - Recipes for Successful Environments
About the Author
About the Reviewers

Configuring the Glance image size limit and storage quota

The glance-api and glance-registry services are commonly configured to use /var filesystem to store locally Glance images and to cache images locally. It is possible to limit the maximum image size that can be uploaded to glance to avoid filling the /var filesystem or abusing the service.


The maximum possible should be set to a value under 8 exabyte (9223372036854775808).

How to do it...

To limit the size of glance images, follow these steps:

  1. Set the maximum image size, in bytes, that can be uploaded through the glance-api service to 1 TB:

    [root@controller ~]# openstack-config --set /etc/glance/glance-api.conf default image_size_cap 1099511627776
  2. Restart the glance-api service:

    [root@controller ~]# systemctl restart openstack-glance-api
    [root@controller ~]# systemctl restart openstack-glance-registry

There's more…

It is also possible to specify the maximum amount of storage that each user can use across all storage stores.