A Framework for Multicloud Environment Services

Int. J. Advanced Networking and Applications
Volume: 6 Issue: 3 Pages: 2338-2341 (2014) ISSN : 0975-0290
2338
A Framework for Multicloud Environment
Services
Dr. C S. Pillai
Associate .Professor & HOD,ACS College OF Engineering, Bangalore.
Email : Pillai.cs5@gmail.com
----------------------------------------------------------------ABSTRACT-----------------------------------------------------------------
The recent surge in cloud computing arises from its ability to provide software, infrastructure, and platform services
without requiring large investments or expenses to manage and operate them. Clouds typically involve service providers,
Infrastructure / resource providers, and service users (or clients). They include applications delivered as services, as well
as the hardware and software systems providing these services. Our proposed framework for generic cloud collaboration
allows clients and cloud applications to simultaneously use services from and route data among multiple clouds. This
framework supports universal and dynamic collaboration in a multicloud system. It lets clients simultaneously use
services from multiple clouds without prior business agreements among (CSP) cloud service providers, and without
adopting common standards and specifications.
KEYWORDS: cloud clients, cloud service provider, applications delivered as services.
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Date of Submission: October 18, 2014 Date of Acceptance: December 01, 2014
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1. INTRODUCTION
Cloud computing characteristics include a ubiquitous
(network-based) access channel; resource pooling;
multitenancy, automatic and elastic provisioning and
release of computing capabilities; and metering of
resource usage (typically on a pay-per-use basis).
Virtualization of resources such as processors, network,
memory, and storage ensures scalability and high
availability of computing capabilities. Clouds can
dynamically provision these virtual resources to hosted
applications or to clients that use them to develop their
own applications or to store data. Rapid provisioning and
dynamic reconfiguration of resources help cope with
variable demand and ensure optimum resource utilization.
As more organizations adopt cloud computing, cloud
service providers (CSPs) are developing new technologies
to enhance the cloud’s capabilities. Cloud mash-ups are a
recent trend; mashups combine services from multiple
clouds into a single service or application, possibly with
on-premises (client-side) data and services. This service
composition lets CSPs offer new functionalities to clients
at lower development costs.
Collaboration among multiple cloud-based services, like
cloud mashups, opens up opportunities for CSPs to offer
more-sophisticated services that will benefit the next
generation of clients.
A proposed proxy-based multicloud computing
framework allows dynamic, on-the-fly collaborations and
resource sharing among cloud-based services, A proposed
proxy-based multicloud computing framework allows
dynamic, on the-addressing trust, policy, and privacy
issues without preestablished collaboration agreements or
standardized interfaces.
With cloud computing initiatives, the scope of insider
threats, a major source of data theft and privacy breaches,
is no longer limited to the organizational perimeter
2. PRESENT SYSTEM AND PROBLEMS
Many existing cloud data services provide similar access
control models, in which individual and organizational
privacy, a key requirement for digital identity
management, is unprotected. Also, with cloud computing
initiatives, the scope of insider threats, a major source of
data theft and privacy breaches, is no longer limited to the
organizational perimeter. Multicloud environments
exacerbate these issues because proxies can access data
(which the environment might dynamically move or
partition across different clouds) on behalf of clients.
Revealing sensitive information in identity attributes to
proxies that grant them authorization to access the data on
behalf of clients is not an attractive solution. Thus,
assuring the private and consistent management of
information relevant to ABAC becomes more complex in
multicloud systems.
• Increase in the attack surface due to system
complexity,
• Loss of client’s control over resources and data due
to asset migration,
• Threats that target exposed interfaces due to data
storage in public domains, and
• Data privacy concerns due to multitenancy
3. MULTICLOUD COMPUTING FRAMEWORK
Multi-Cloud computing has many advantages such as it
provides usage of data from various clouds, the ability of

2339
choice for the user, stops vendor lock-in and
synchronization between different cloud service providers
with cost optimization. The main issue in implementing
multi-cloud is its working in a distributed environment as
the services are to be collaborated with different cloud
service providers to make it possible a framework is laid
in the research work of “Collaboration Framework for
Multi-cloud Systems” [6] which specify the use of proxies
at different level of collaboration. These proxies can be
implemented by the cloud service provider or can be set
by the institutionsorganization so as to gain service from
collaborated service providers. These proxies can also be
used to have a secure communication between the client
and the service provider. To protect data at rest and data
in transit, proxies must provide a trusted computing
platform that prevents malicious software from taking
control and compromising sensitive client and cloud
application data [6]. This also deals with the security
aspect of the cloud computing. The cloud services have
been classified as software as a service (SaaS), Platform
as a service (PaaS) and Infrastructure as a Service (IaaS)
it becomes important that the cloud service providers
must be able to provide these services on distributed
environment of multi-cloud for that purpose research
work of “A Federated Multi-Cloud PaaS Infrastructure”
[4] can be effective as it provides a platform for various
services to be provides in a collaborated paradigm. It is
also important that the cost effectiveness of multi-cloud
must be considered before shifting towards a new
paradigm to solve this issue research work of “Cloud
Brokering Algorithm” [10] has given an algorithm based
on the Virtual infrastructure in cloud environment which
will effectively determine the allocation of VM both on
static and dynamic basis. This paper is based on review of
the technique that will proof to be efficient while shifting
towards the multi-cloud environment. All the factor
included in this paper are the research work done in the
fields which are the major concern whenever a new
technology is to be implemented it includes the
framework, platform for new technology to be
implemented and the cost effectiveness on the side of the
consumer.
3.1 Cloud hosted proxy
As Figure 1.1 shows, each CSP can host proxies within its
cloud infrastructure, manage all proxies within its
administrative domain, and handle service requests from
clients that wish to use those proxies for collaboration.
The proxy instances might need to be
CSP specific. For example, in Figure 1.1, both C1 and C2
might mutually and dynamically provision sharing and
collaboration logic as proxy virtual instances within their
respective administrative domains.
Figure1.1:Cloud-hosted-proxy
3.2 Proxy as a service
Figure1.2: Proxy as a service
As Figure 1.2 shows, this scenario involves deploying
proxies as an autonomous cloud that offers collaborative
services to clients and CSPs. A group of CSPs that are
willing to collaborate can manage this proxy-as-a-service
cloud, or a third-party entity, a proxy service provider
(PSP), can provide management. Clients directly
subscribe to the proxy cloud service and employ them for
inter cloud collaboration.
4. GENERIC CLOUD COLLABORATION
Our proposed framework for generic cloud collaboration
allows clients and cloud applications to simultaneously
use services from and route data among multiple clouds.
This framework supports universal and dynamic
collaboration in a multicloud system. It lets clients
simultaneously use services from multiple clouds without
prior business agreements among cloud providers, and
without adopting common standards and specifications.
As more organizations adopt cloud computing, cloud
service providers (CSPs) are developing new technologies
to enhance the cloud’s capabilities. Cloud mashups are a

2340
recent trend; mashups combine services from multiple
clouds into a single service or application, possibly with
on-premises (client-side) data and services. This service
composition lets CSPs offer new functionalities to clients
at lower development costs.
The proposed framework includes refining the proxy
deployment scenarios and development of infrastructural
and operational components of a multicloud system. This
must be accompanied by implementation of an
experimental platform using open source tools and
libraries. Enhance id management protocol framework for
more authentication. user centric identity management
and is being considered as a complete all-round solution
addressing all possible issues of cloud IDMs.
5. IMPLEMENTATION
After careful analysis the system has been identified to
have the following
• Collaboration Framework For Multicloud System
• Client/Users
• Cloud Service Provider
• Proxy Service Provider
• Collaboration Framework For Multicloud System :
Cloud collaboration allows clients and cloud applications
to simultaneously use services from and route data among
multiple clouds. This framework supports universal and
dynamic collaboration in a multicloud system. It lets
clients simultaneously use services from multiple clouds
without prior business agreements among cloud
providers, and without adopting common standards and
specifications.
• Client/Users :
Client sends a request to cloud C1, which dynamically
discovers the need to use services from clouds C2 and C3.
C1 employs proxies to manage these interactions. A client
that wishes to simultaneously use services from multiple
clouds must individually interact with each cloud service,
gather intermediate results, process the collective data,
and generate final results. Proxies can facilitate
collaboration without requiring prior agreements between
the cloud service providers. First, the requesting entity
chooses proxies to act on its behalf and to interact with
cloud applications. A client or a CSP might employ
multiple proxies to interact with multiple CSPs. It can
select proxies based on, for example, latencies between
proxies and clouds or workload conditions at various
proxies.
• Cloud Service Provider :
Cloud service providers (CSPs) deploy proxies as an
autonomous cloud system and offer it as a service to
clients. A client employs two proxies to interact with
CSPs C1 and C2. Alternatively, a client initiates a service
request with C1, which then discovers the need for a
service from C2. PSP: proxy service provider. Clients
deploy proxies within the infrastructure of their
organization. A client employs two proxies to interact
with CSPs C1 and C2. A client initiates a service request
with C1, which then discovers the need for a service from
C2.
• Proxy Service Provider :
It involves deploying proxies as an autonomous cloud that
offers collaborative services to clients and CSPs. A group
of CSPs that are willing to collaborate can manage this
proxy-as-a-service cloud, or a third-party entity, a proxy
service provider (PSP), can provide management. Clients
directly subscribe to the proxy cloud service and employ
them for intercloud collaboration. To protect data at rest
and data in transit, proxies must provide a trusted
computing platform that prevents malicious software from
taking control and compromising sensitive client and
cloud application data.
Fig 1.3 Owner uploads file
Fig 1.4 Uploaded file can be viewed
Fig 1.5 New service level agreement
Fig 1.6 New service level agreement successful

2341
Fig 1.7 File requested by user ‘b’ is successful
Fig 1.8 File requested by user ‘a’ is successful
6. CONCLUSION
The platform on which the services are to be shared and at
last the market point of view that is its cost effectiveness
compared to the available. The multi-cloud environment
can end the vendor lock-in of the consumer which is
attained in the single cloud. The major area of concern in
this field is the agreement between the cloud service
providers for collaboration of their services in multi-
cloud. The consumer will get highly benefited with multi-
cloud environment and obtain service based on his
preferences and requirement and not based on his cloud
service provider.
A secure multicloud computing which provides
collaboration between clouds and gives the user
opportunity to download the files from different cloud
that is present. This also provides the security to the
user’s password and also to the files and data present in
the cloud.
7. FUTURE ENHANCEMENT
Cloud computing is new and growing very quickly, but
because security issues are still delaying its adoption, we
need to provide security mechanisms to ensure that cloud
computing benefits are fully realized and utilized.
Although there are many advantages to using a cloud-
based system, practical problems remain that have to be
solved before the technology can be more fully deployed,
particularly those problems related to service level
agreements, security, privacy, and power efficiency.
8. BIBLIOGRAPHY
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[3]. R. Buyya et al., “Market-Oriented Cloud
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A Framework for Multicloud Environment Services

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