2 vm provisioning
- 2. Introduction Let’s focus on two core services that enable the users to get the best out of the IaaS model in public and private cloud setups, Virtual machine provisioning and migration services. Analogy for Virtual Machine Provisioning: • Historically, when there is a need to install a new server for a certain workload to provide a particular service for a client, lots of effort was exerted by the IT administrator, and much time was spent to install and provision a new server . 1)Check the inventory for a new machine, 2) get one, 3) format, install OS required, 4)and install services; a server is needed along with lots of security batches and appliances.
- 3. Contd… • With the emergence of virtualization technology and the cloud computing IaaS model: • It is just a matter of minutes to achieve the same task. • All you need is to provision a virtual server through a self-service interface with small steps to get what you desire with the required specifications. 1) provisioning this machine in a public cloud like Amazon Elastic Compute Cloud (EC2), or 2) using a virtualization management software package or a private cloud management solution installed at your data center in order to provision the virtual machine inside the organization and within the private cloud setup.
- 5. What is VM provisioning? Virtual machine provisioning, or virtual server provisioning, is a systems management process that creates a new virtual machine (VM) on a physical host server and allocates computing resources to support the VM
- 6. Contd… Analogy for Migration Services: • Previously, whenever there was a need for performing a server’s upgrade or performing maintenance tasks, you would exert a lot of time and effort, because it is an expensive operation to maintain or upgrade a main server that has lots of applications and users. • with the advance of the revolutionized virtualization technology and migration services associated with hypervisors’ capabilities, these tasks (maintenance, upgrades, patches, etc.) are very easy and need no time to accomplish.
- 7. Contd… • Provisioning a new virtual machine is a matter of minutes, saving lots of time and effort, Migrations of a virtual machine is a matter of milliseconds: 1)saving time, 2) effort, 3) making the service alive for customers, and 4) achieving the SLA/SLO agreements and quality-of-service (QoS) specifications required.
- 10. Layered Virtualization Technology • The virtualization layer partitions the physical resource of the underlying physical server into multiple virtual machines with different workloads. The virtualization layer 1)Schedules resources, 2) Allocates physical resources, 3)Makes each virtual machine think that it totally owns the whole underlying hardware’s physical resource (Preprocessor, disks, etc.) 4) Makes it flexible and easy to manage resources. 5)Improve the utilization of resources by multiplexing many virtual machines on one physical host. 6)The machines can be scale up and down on demand with a high level of resources’ abstraction. 7) Enables High, Reliable, and agile deployment mechanism. 8) Provides On-demand cloning and live migration. 9) Having efficient management suite for managing virtual machines
- 11. Private cloud and Infrastructure Services • A private cloud aims at providing public cloud functionality, but on private resources, while maintaining control over an organization’s data and resources to meet security and governance’s requirements in an organization. • Private cloud exhibits a highly virtualized cloud data center located inside your organization’s firewall. It may also be a private space dedicated for your company within a cloud vendor’s data center designed to handle the organization’s workloads, and in this case it is called Virtual Private Cloud (VPC).
- 12. Private clouds exhibit the following characteristics: 1) Allow service provisioning and compute capability for an organization’s users in a self-service manner. 2) Automate and provide well-managed virtualized environments. 3) Optimize computing resources, and servers’ utilization. 3) Support specific workloads. There are many examples for vendors and frameworks that provide infrastructure as a service in private setups. The best- known examples are Eucalyptus and OpenNebula. 4) It is also important to highlight a third type of cloud setup named “hybrid cloud,” in which a combination of private/internal and external cloud resources exist together by enabling outsourcing of noncritical services and functions in public cloud and keeping the critical ones internal. 5) Hybrid cloud’s main function is to release resources from a public cloud and to handle sudden demand usage, which is called “cloud bursting.”
- 13. Cloud and Virtualization Standardization Efforts • Standardization is important to ensure interoperability between virtualization management vendors, the virtual machines produced by each one of them, and cloud computing. • Distributed Management Task Force (DMTF) have produced standards for almost all the aspects of virtualization technology. • DMTF initiated the VMAN (Virtualization Management Initiative), which delivers broadly supported interoperability and portability standards for managing the virtual computing lifecycle.
- 14. Contd… • VMAN’s OVF (Open Virtualization Format) in a collaboration between industry key players: Dell, HP , IBM, Microsoft, XenSource, and VMware. • OVF specification provides a common format to package and securely distribute virtual appliances across multiple virtualization platforms. VMAN profiles define a consistent way of managing a heterogeneous virtualized environment
- 15. Cloud and Virtualization Standardization Efforts • Another standardization effort has been initiated by Open Grid Forum (OGF) through organizing an official new working group to deliver a standard API for cloud IaaS, the Open Cloud Computing Interface Working Group (OCCIWG). • This group is dedicated for delivering an API specification for the remote management of cloud computing’s infrastructure and for allowing the development of interoperable tools for common tasks including deployment, autonomic scaling, and monitoring.
- 16. Contd… • The new API for interfacing “IaaS” cloud computing facilities will allow: • Consumers to interact with cloud computing infrastructure on an ad hoc basis. • Integrators to offer advanced management services. • Aggregators to offer a single common interface to multiple providers. • Providers to offer a standard interface that is compatible with the available tools. • Vendors of grid/clouds to offer standard Interfaces for dynamically scalable service’s delivery in their products.
- 17. Virtual Machine Provisioning and Manageability Virtual Machine Life Cycle • Virtual Machine Provisioning and Manageability Virtual Machine Life Cycle • The cycle starts by a request delivered to the IT department, stating the requirement for creating a new server for a particular service. • This request is being processed by the IT administration to start seeing the servers’ resource pool, matching these resources with requirements • Starting the provision of the needed virtual machine. • Once it provisioned and started, it is ready to provide the required service according to an SLA. • Virtual is being released; and free resources.
- 18. F I G U R E 5.3 . Virtu al m a ch i n e life cycle. • E nd of servic e • C o mp u t e resources deallocated to other V M s V l 1 s I n O p e r a tion • S e r vin g w eb requests • Migration servic e s • S eal o n -d e m a nd compu_ te resources I T S e r ,ice R equest • Infrastructure Requirem e n ts Analy sis • I T req u est VJ.1 P rovi jon • L oad O S + A ppliance s • C u s tom i z e a n d Configure • Start t h e server