By default, images used are based on Ubuntu’s daily cloud images.
pycloudlib uses simplestreams to determine the latest daily images using the appropriate images found at Ubuntu Cloud Images site.
The image search is filtered based on a variety of options, which vary from cloud to cloud. Here is an example for Amazon’s EC2:
filters = [ 'arch=%s' % arch, 'endpoint=%s' % 'https://ec2.%s.amazonaws.com' % self.region, 'region=%s' % self.region, 'release=%s' % release, 'root_store=%s' % root_store, 'virt=hvm', ]
This allows for the root store to be configurable by the user.