openstack2天培训.pdf

TM Mirantis /training Goals •  Understand OpenStack purpose and use cases •  Understand OpenStack ecosystem o  history o  projects •  Understand OpenStack architecture o  logical architecture o  components o  request flow •  Get enough theory for hands-on lab /training What is OpenStack? Open source software for building private and public clouds /training OpenStack capabilities •  VMs on demand o  provisioning o  snapshotting •  Volumes •  Multi-tenancy o  quotas for different users o  user can be associated with multiple tenants •  Object storage for VM images and arbitrary files /training OpenStack History •  July 2010 - Initial announcement •  October 2010 - Austin Release •  April 2011 - Cactus Release •  October 2011 - Diablo Release •  April 2012 - Essex Release •  October 2012 - Folsom Release /training OpenStack Projects •  Nova (Compute) •  Glance (Image Service) •  Swift (Object Store) •  Keystone (auth) •  Horizon (Dashboard) /training OpenStack Projects: Relationship /training OpenStack: Deployment Topology /training OpenStack Projects: Detailed View /training Horizon The OpenStack Dashboard (Horizon) provides a baseline user interface for managing OpenStack services. /training Horizon notes •  Stateless •  Error handling is delegated to back-end •  Doesnt support all API functions •  Can use memcached or database to store sessions •  Gets updated via nova-api polling /training Horizon internals •  2 subprojects o  horizon - generic Django libraries and components to work with REST-based back-end o  openstack-dashboard - web app itself, with styles, locale, etc. •  Dashboard for each