In this chapter, you learned:
An image is a file containing a virtual disk installed with a bootable operating system. Images are managed by the Image Service (Glance). An image is one of the fundamental requirements for deploying instances.
Images are stored and managed by the Image service, which manages the catalog of images. Depending on configurable attributes, images are available to some or all users.
You must specify a flavor to deploy an instance. The Compute service schedules the deployment by checking the compute nodes for sufficient available resources, as requested by the flavor. If no host (compute node) can be found with sufficient resources, the instance deployment fails.
Customize a flavor so that hardware requirements meet user needs. In addition to system disk and memory size, and the number of VCPUs, you can define other parameters, such as adding a swap disk or additional ephemeral disk.
Projects are provided with their own networks by the OpenStack Networking Service. These networks are isolated using Virtual Local Area Network (VLAN) segregation (every project network is a network VLAN).
Click CREATE to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
If you DELETE your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.