Swarm on OpenStack
Speaking of private cloud, the most popular open source solution for IaaS is OpenStack. OpenStack is a great ecosystem of programs (formerly known as projects), with the goal of providing a so-called cloud operating system. The core OpenStack programs are:
- Keystone: The identity and authorization system
- Nova: The virtual machine abstraction layer. Nova can be plugged with virtualization modules, such as Libvirt, VMware
- Neutron: The network module, which handles tenant networks, instances ports, routing, and traffic
- Cinder: The storage module responsible for handling volumes
- Glance: The image storage
Everything is glued up by additional actors:
- A database system, such as MySQL, keeping the configurations
- An AMQP broker, such as Rabbit, ...
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