Previous

This blog on Openstack modelled using Archimate follows on from the previous Blog on OpenStack Cloud Block Storage in Archimate – Part 5.

Glance = Images

Mission: The Image service (glance) provides a service where users can upload and discover data assets that are meant to be used with other services. This currently includes images and metadata definitions.

What is a virtual machine image? A virtual machine image is a single file which contains a virtual disk that has a bootable operating system installed on it. Virtual machine images come in different formats: Raw, AKI, AMI, ARI, ISO, OVF, QCOW2, UEC Tarball, VDI, VHD, VHDX, VMDK.

Glance image services include discovering, registering, retrieving and format converting virtual machine (VM) images. Glance has a RESTful API that allows querying of VM image metadata as well as retrieval of the actual image.

Glance = Images Structural Logical Architecture

Glance image services include discovering, registering, and retrieving virtual machine images. Glance has a RESTful API that allows querying of VM image metadata as well as retrieval of the actual image. VM images made available through Glance can be stored in a variety of locations from simple filesystems to object-storage systems like the OpenStack Swift project.

Glance = Images Behavioural Services Architecture

These are the REST & CLI Services offered by Glance for Images. For each Service below there are one or many sub-services or commands that can be found here: https://developer.openstack.org/api-ref/image/v2/index.html

Next

The next blog in the series is OpenStack Cloud Object Storage in Archimate – Part 7