OpenStack Interview Questions and Answers

OpenStack Interview Questions and Answers

OpenStack is an open-source software platform for cloud computing. OpenStack lets users deploy virtual machines and other instances that handle different tasks for managing a cloud environment on the fly. It makes horizontal scaling easy, which means that tasks that benefit from running concurrently can easily serve more or fewer users on the fly by just spinning up more instances. For example, a mobile application that needs to communicate with a remote server might be able to divide the work of communicating with each user across many different instances, all communicating with one another but scaling quickly and easily as the application gains more users. And most importantly, OpenStack is open source software, which means that anyone who chooses to can access the source code, make any changes or modifications they need, and freely share these changes back out to the community at large. It also means that OpenStack has the benefit of thousands of developers all over the world working in tandem to develop the strongest, most robust, and most secure product that they can.

The software platform consists of interrelated components that control diverse, multi-vendor hardware pools of processing, storage, and networking resources throughout a data center. Users either manage it through a web-based dashboard, through command-line tools, or through RESTful web services.

In July 2010, Rackspace Hosting and NASA jointly launched an open-source cloud-software initiative known as OpenStack. As of 2016, it is managed by the OpenStack Foundation, a non-profit corporate entity established in September 2012 to promote OpenStack software and its community. More than 500 companies have joined the project. Private cloud distributions run on OpenStack are better than DIY approaches—and there’s proof. 451 Research found that it only takes a 6% increase in the number of virtual machines facilitated by OpenStack’s easy installation and management for OpenStack distributions to become significantly more valuable than private clouds created on your own. Now Pike (2017.02.20) / 30 August 2017.

What is OpenStack?

Why OpenStack?

What are the components of OpenStack?

What is use of Python SDK in OpenStack?

What is API-server?

What is orchestration?

What is alarm in openstack?

What is sanitization process?

What is Cells in OpenStack?

What is Token in OpenStack?

What is Hypervisor?

What types of hypervisor does Openstack support?
Why compliance is required in openstack?

What is the basic functions of Identity Service in OpenStack?

What are the main components of identity user management?

What are functions of “Nova”?

What is the OpenStack Block Storage?

What is the command used for unpause and pause an instance?

What OpenStack does?

What is RabbitMQ server?

What types of storage openstack compute provides?

How is OpenStack used in a cloud environment?

What are benefits of Openstack?

What is the networking options used in OpenStack?

What is Horizon?

What is bare-metal node and what does it comprised of?

What are data privacy concerns in openstack, how those can be remediated?

What you will do in case of server failure?

What are the critical elements of a secure OpenStack cloud?

Explain storage locations for VM images in OpenStack?

What is job of user CRUD?

What are commands to generate key pairs?

Which command is used to list IP address information?

Give an example where logs help in openstack security?

How to migrate running instances from one openstack compute server to another openstack compute server?

Who is OpenStack for?

What is difference between Virtualization and Openstack?