Glossary

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See also Architecture.

Deployment Architecture

• Node – A server which is managed by Crowbar.
• Admin Node – Node which the Crowbar/Chef servers run on
• Compute Node – a node which has an OpenStack Compute (Nova) Role.
• Controller Node – Has the Nova-Controller/Keystone/… Role
  • Controller Nodes – can be one or many (ie Keystone Controller, Swift-Proxy Controller, MySQL Controller,…)
• Swift-Proxy Node – Has the swift-proxy role

Crowbar Install Items

• Sledgehammer - a PXE-bootable image for performing hardware discovery and inventory on nodes before they are assigned to particular roles.
• rainbows - a ruby web/application server

Crowbar UI & Chef Items

• barclamp - A set of data, templates and other necessary logic for applying a particular role to a node, or to some set of nodes.
• proposal - a collection of barclamp-specific settings and a list of role assignments to nodes against which the barclamp will trigger configuration management tasks when the configuration is applied
• role - a subset of configuration that has been or will be applied to a node so that it can serve a particular purpose (e.g. run a particular system service or OpenStack component)
• Chef - an automated configuration management platform.
• recipe - a group of chef scripts (written in Chef/Ruby) and templates used by chef to deploy a unit of functionality.
• cookbook - a collection of chef recipes which deploy a software stack or technology. It is the unit of distribution for chef.