Welcome!

@CloudExpo Authors: Pat Romanski, Zakia Bouachraoui, Yeshim Deniz, Liz McMillan, Elizabeth White

Related Topics: FinTech Journal, Microservices Expo, Open Source Cloud, Agile Computing, @CloudExpo, Cloud Security, SDN Journal

FinTech Journal: Article

Overview of the OpenStack Cloud

Distilling terminology and acronyms that define OpenStack

Overview
OpenStack is an Infrastructure as a Service offering. (see my prior post for an explanation of IaaS).

OpenStack is an OpenSource project, founded by RackSpace, NASA and others.

OpenStack can be deployed as a public or private cloud.

The OpenStack projects are: CINDER, GLANCE, KEYSTONE, NOVA, QUANTUM, SWIFT.

OpenStack Compute: (NOVA)
Project NOVA, or OpenStack Compute, provisions and manages on-demand virtual machines and associated resources: CPU, Memory, Disk and Network.

Virtual machines can be started, stopped, suspended, created and deleted, while network options for a virtual machine are static, DHCP, or IPv6.

The virtual machines run on hypervisors such as XEN or KVM, but others are supported too - even VMware ESXi!

Users and administrators use the GUI to request virtual machines, while developers may typically use an API.

Security? Of course there are security groups, similar to AWS, to control access to virtual machines and RBAC to govern user access by role and project.

Storage
Object Storage (project SWIFT)

Object Storage is a distributed storage system for static data such as files (graphics, movies) and virtual machine images. Objects and files are written to multiple disk drives, while OpenStack is responsible for ensuring data replication and integrity. Storage scales horizontally by adding new servers.  If a server or hard drive fails, OpenStack replicates its content from other active servers to new servers in the cluster. Since OpenStack uses software to ensure data replication and distribution across servers, inexpensive servers can be used rather than expensive storage hardware.

Block storage (project CINDER)
Block storage is essentially volumes used by OpenStack virtual machines. Snapshots back up data stored on block storage volumes. Snapshots can be restored or used to create a new block storage volume.

Network (project QUANTUM)
OpenStack provides networking models to accomodate different applications or users. Standard network models include flat networks or VLANs to separate servers and network traffic. OpenStack Networking manages IP addresses, to allocate static  or DHCP addresses. Floating IP addresses allow traffic to be dynamically rerouted to any compute resource,  for example to redirect traffic during maintenance or in the case of a failure. OpenStack Networking has an extension framework to add intrusion detection systems (IDS), load balancing, firewalls and virtual private networks (VPN) .

Shared Services
Identity services (project KEYSTONE)
OpenStack Identity provides a central repository of users mapped to the OpenStack services they can access. OpenStack identity is a common authentication system and integrates with existing backend directory services such as LDAP. It supports several forms of authentication including username and password, tokens and AWS-type logins. The identity service also provides a queryable list of services deployed in the OpenStack cloud and users can programmatically determine their level of access.
OpenStack.

OpenStack Administrators can:

  • Configure centralized policies across users and systems
  • Create users and tenants and define permissions for compute, storage and networking resources using role-based access control (RBAC)
  • Integrate with an existing directory like LDAP, allowing for a single source of identity authentication across the cloud.

Image services (Project GLANCE)

The OpenStack Image Service provides discovery, registration and delivery services for disk and server images. Saved images can be used as a template to get new virtual servers up and running (especially useful for multiple servers of the same type and configuration). It can also be used to store and catalog an umlimited number of backups.

The image service stores private and public images in a variety of formats:

  • AMI
  • qcow2 (Qemu/KVM)
  • OVF (Open Virtualization Format)
  • RAW
  • VDI (VirtualBox)
  • VHD (Hyper-V)
  • VMDK (VMWare)

Image below courtesy of OpenStack.org

More Stories By Jonathan Gershater

Jonathan Gershater has lived and worked in Silicon Valley since 1996, primarily doing system and sales engineering specializing in: Web Applications, Identity and Security. At Red Hat, he provides Technical Marketing for Virtualization and Cloud. Prior to joining Red Hat, Jonathan worked at 3Com, Entrust (by acquisition) two startups, Sun Microsystems and Trend Micro.

(The views expressed in this blog are entirely mine and do not represent my employer - Jonathan).

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


CloudEXPO Stories
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or personal computing needs.
DXWorldEXPO LLC announced today that the upcoming DXWorldEXPO | DevOpsSUMMIT | CloudEXPO New York will feature 10 companies from Poland to participate at the "Poland Digital Transformation Pavilion" on November 12-13, 2018. Polish Digital Transformation companies which will exhibit at CloudEXPO | DevOpsSUMMIT | DXWorldEXPO include All in Mobile, dhosting, Cryptomage, Perfect Gym, Polcom, Apius Technologies, Aplisens, ELZAB SA, TELDAT, and Rebug.io.
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to advisory roles at startups. He has worked extensively on monetization, SAAS, IoT, ecosystems, partnerships and accelerating growth in new business initiatives.
Lori MacVittie is a subject matter expert on emerging technology responsible for outbound evangelism across F5's entire product suite. MacVittie has extensive development and technical architecture experience in both high-tech and enterprise organizations, in addition to network and systems administration expertise. Prior to joining F5, MacVittie was an award-winning technology editor at Network Computing Magazine where she evaluated and tested application-focused technologies including app security and encryption-related solutions. She holds a B.S. in Information and Computing Science from the University of Wisconsin at Green Bay, and an M.S. in Computer Science from Nova Southeastern University, and is an O'Reilly author.
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more business becomes digital the more stakeholders are interested in this data including how it relates to business. Some of these people have never used a monitoring tool before. They have a question on their mind like "How is my application doing" but no idea how to get a proper answer.