Nova is the OpenStack<\/a> project that provides a way to provision compute instances (aka virtual servers). Nova supports creating virtual machines, baremetal servers (through the use of ironic), and has limited support for system containers. Nova runs as a set of daemons on top of existing Linux<\/a> servers to provide that service.<\/p>\n It requires the following additional OpenStack services for basic function:<\/p>\n in choosing which provider of those resources will be used when creating a virtual machine. It can also integrate with other services to include: persistent block storage, encrypted disks, and baremetal compute instances.<\/p>\n As an end user of nova, youll use nova to create and manage servers with either tools or the API directly.<\/p>\n The OpenStack Compute service allows you to control an Infrastructure-as-a-Service (IaaS)<\/a> cloud computing platform. It gives you control over instances and networks, and allows you to manage access to the cloud through users and projects. Compute does not include virtualization software. Instead, it defines drivers that interact with underlying virtualization mechanisms that run on your host operating system, and exposes functionality over a web-based API<\/a>.<\/p>\n 2.1.1 End user guide <\/b><\/p>\n 2.1.1.1 Availability zones<\/b><\/p>\n Availability Zones are an end-user visible logical abstraction for partitioning a cloud without knowing the physical infrastructure. Availability zones can be used to partition a cloud on arbitrary factors, such as location (country, datacenter, rack), network layout and\/or power source. Because of the flexibility, the names and purposes of availability zones can vary massively between clouds. In addition, other services, such as the networking service and the block storage service, also provide an availability zone feature. However, the implementation of these features differs vastly between these different services. Consult the documentation for these other services for more information on their implementation of this feature.<\/p>\n Usage<\/b><\/p>\n Availability zones can only be created and configured by an admin but they can be used by an end-user when creating an instance. For example: It is also possible to specify a destination host and\/or node using this command; however, this is an admin-only operation by default. For more information, see\u00a0Using availability zones to select hosts<\/i>.<\/p>\n 2.1.1.2 Launch instances<\/b><\/p>\n Instances are virtual machines that run inside the cloud. Before you can launch an instance, gather the following parameters:<\/p>\n\n
Chapter Two – For End Users<\/b><\/h2>\n
2.1 User Documentation\u00a0<\/b><\/h3>\n
\n$ openstack server create –availability-zone ZONE … SERVER<\/p>\n\n
\n