Availability Zone An Amazon EC2 concept of an isolated area that is used for fault tolerance. Do not confuse with an OpenStack Compute zone or cell.
Allowed Address Pairs In Neutron there is a feature called allowed address pairs , this allow you to define <mac, ip> pairs that are allowed for a specific port regardless of his configured MAC address/IP address.
Dashboard (horizon) OpenStack project which provides an extensible, unified, web-based user interface for all OpenStack services. A Python class representing a top-level navigation item (e.g. “project”) which provides a consistent API for Horizon-compatible applications.
Floating IP Floating IP address allow you to: - Associate the floating IP address with an instance of the project. - Only one floating IP address can be allocated to an instance at any given time. - Disassociate a floating IP address from an instance in the project. - Delete a floating IP from the project which automatically deletes that IP’s associations.
Horizon The OpenStack dashboard project. Also the name of the top-level Python object, which handles registration for the app.
Instance A running VM, or a VM in a known state such as suspended, that can be used like a hardware server.
Instance ID Alternative term for instance UUID.
Instance state The current state of a guest VM image.
Panel A Python class representing a sub-navigation item (e.g. “instances”) which contains all the necessary logic (views, forms, tests, etc.) for that interface.
Project Used in user-facing text in place of the term “Tenant” which is Keystone’s word.
Region A discrete OpenStack environment with dedicated API endpoints that typically shares only the Identity (keystone) with other regions.
Volume Disk-based data storage generally represented as an iSCSI target with a file system that supports extended attributes; can be persistent or ephemeral.