OpenStack

Architecture schema

Dashboard

• Web UI is providing access to OpenStack services
• For administrators of OpenStack resources
• Self-service for users of OpenStack resources

Dashboard - Horizon

• Django based application
• Growing AngularJS codebase
• Plugin based architecture - can be extended for other services

Architecture schema

Identity

• Authentication, authorization and service discovery
• Can support other existing backends as LDAP
• Can use external authentication (Kerberos, X.509, ...)

Identity - Keystone

• HTTP API

Architecture schema

Compute

• Manages and automates pools of compute resources
• VM image and live VM management

Compute - Nova

• Supported hypervisors - KVM, Xen, VMware, LXC, and more
• Consists of multiple python daemons
• Native API as well as Amazon EC2 and S3 APIs

Architecture schema

Networking

• System for managing networks and IP addresses
• Pluggable, scalable and API-driven

Networking - Neutron

• Pluggable backend architecture
• Software-defined Network (OpenFlow)

Architecture schema

Orchestration

• App look is described by declarative language
• Description gets translated to the OpenStack API calls
• Autoscaling and self-healing of apps

Orchestration - Heat

• Composable resource templates
• Integrate other services as plugins
• You can define your custom resources

Architecture schema

Object Storage

• Distributed object storage system
• Scale horizontally simply by adding new servers

Object Storage - Swift

• Object versioning
• Simple REST API

Architecture schema

Block Storage

• Provides persistent block level storage devices
• Self-service for users with snapshot and backup API

Block Storage - Cinder

• Multiple backends - Ceph, NetApp, Nexenta, SolidFire, and Zadara
• Access and quota management

Architecture schema

Image Storage

• Discovers, registers, and retrieves VM images
• RESTful API

Image Storage - Glance

• Can use as backend - file, Swift, Cinder, S3, ...

Architecture schema