This tutorial will show how to install the main components of OpenStack, specifically:

MySQL

MySQL database is used together with the RabbitMQ messaging system for storing and sharing information about the status of the cloud. Alternatively the PostgreSQL software can be also used as database backend. We will use default one: MySQL.

RabbitMQ

Messaging service used for inter-process communication among various OpenStack components. Alternatives to RabbitMQ are the Qpid and ZeroMQ softwares, in this tutorial we will again use the default one: RabbitMQ.

Keystone

OpenStack service which provides the authentication service and works as a catalog of the various services available on the cloud. Different backends can be used: in our setup we will store login, password and tokens in a MySQL db.

nova

OpenStack orchestrator: it works as a main API endpoint for Horizon and for command line tools, schedule the requests, talks to the other OpenStack components to provide the requested resources, setup and run the OpenStack instances. It is thus composed of multiple services: nova-api, nova-scheduler, nova-conductor, nova-cert, ect.

nova-network

OpenStack service used to configure the network of the instances and to optionally provide the so-called Floating IPs. IPs that can be attached and detached from an instance while it is already running. Those IPs are usually used for accessing the instances from outside world.

nova-compute

OpenStack service which runs on the compute node and is responsible of actual managing the OpenStack instances. It supports different hypervisors. The complete list bellow can be found here. The commonly used one is KVM but due to limitation in our setup we will use qemu.

glance

OpenStack imaging service. It is used to store virtual disks used to start the instances. It is split in two different services: glance-api and glance-registry

cinder

OpenStack volume service. It is used to create persistent volumes which can be attached to a running instances later on. It is split in three different services: cinder-api, cinder-scheduler and cinder-volume

Horizon

OpenStack Web Interface.

TODO: add something more