OpenStack Architecture and its advantages (1)

OpenStack provides scalable and resilient cloud computing services for both private and public clouds, which must be simple to deploy and scalable.

1. Loose coupling of modules

2. The configuration of components is flexible.

3. The second development is easy

I. OpenStack component

OpenStack shared Services components:

Database Services (Database Service): MairaDB and MongoDB

Message transfer (Message Queues): RabbitMQ

Cache (cache): Memcached time (time sync): NTP

Storge provider: ceph, GFS, LVM, ISICI, etc.

High availability and load balancing: pacemaker, HAproxy, keepalive, lvs, etc.

OpenStack core components:

Identity Service (Identity Service): Keystone

Computing (Compute): Nova

Mirror Service (Image Service): Glance

Network & address Management (Network): Neutron

Object storage (Object Storage): Swift

Block storage (Block Storage): Cinder

UI interface (Dashboard): Horizon

Measure (Metering): Ceilometer

Deployment orchestration (Orchestration): Heat