1. Virtualization of Infrastructure as a Service (IaaS): Redundancy Mechanism of the Controller Node in OpenStack Cloud Computing Platform BY Shahed murshed Mobarak Hossain

2. Infrastructure as a Service (IaaS)
SUMMARY
Cloud Computing
cloud computing is considered as a process of storing and accessing data and programs over the Internet instead of in a hard drive of a computer.
Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) offers computing capabilities and basic storage as standardized services over the network.
Servers, storage systems, switches, routers, and other systems are reserved and made available to the user through the internet.
Resources allocated as per requirement and billed as per use.
Major IaaS service providers: AWS, Azure, Google, IBM, RackSace, RedHat, Vmware, Oracle, Verizon.

3. Redundancy of Controller Node in OpenStack OS
OpenStack platform is a virtual network and the network connectivity and addressing is managed by a set of API.
OpenStack is a collection of open-source software projects developed by individual groups which are used to develop and manage the IT infrastructure of an organization.
Redundancy of Controller Node in OpenStack OS
The OpenStack network is built on concentric to the controller node and all the nodes involved in the network are interconnected through network components known as switch and router.
If the controller node is down results in a network downtime.
Proposed a second standby controller in the system to takeover the services which directs to uninterrupted services.

4. Research quires and solution:
PROBLEM and SOLUTION
Research quires and solution:
What is the purpose of introducing redundancy option to the controller node of OpenStack Cloud Platform?
In this platform all the instruction flow are centralized to the controller node.
If the controller node is down the service is
down.
Controller
Compute 1
Compute 2
Block Storage
Object Storage
Object Storage 2

5. PROBLEM and SOLUTION
What is the implication of this redundancy technique?
Introduced a standby controller node and a link node to monitor the controller nodes and direct packets based on the status of the controller nodes.
The new model ensures that the network dose not experience downtime - making the network more efficient and robust.
MikroTik Router
External Switch
Stand by Controller
Controller
Compute 1
Compute 2
Internal Switch
Block Storage
Object Storage 2
Object Storage 2

6. PROBLEM and SOLUTION Link Node
In the proposed architecture a second controller node is added which ensures redundancy if the first one is down.
A Mikrotik router is added which acts as the link node between controller nodes and it also monitors both controller.
If a null signal is received from the first controller the link node immediately send message to the standby controller to takeover and ensure maximum uptime.
External Switch
Mikrotik Router
Internal Switch
Stand by Controller
Controller

7. RESEARCH METHODOLOGY
Analyzed business models of existing IaaS platforms designed by various cloud service providers.
Selected OpenStack platform for analysis and followed exploratory research method.
The research approach was mainly based on literature search and review, conducting interview on a focus group and of course by brainstorming on the existing technique being used in the IaaS models.
The research was also depended heavily on reference check and journals on related subject matters.
The logic proposed are adopted based on thorough examination of the concepts and technologies of IaaS cloud platforms.
A combination of cloud networking concept and the economical factor associated are analyzed to bring out a realistic solution.

8. RESULTS & DISCUSSIONS
Three VM’s have been installed in OpenStack service , web service and cloud application for file sharing .
Application are unavailable if the controller experiences downtime and results in service outag
We introduced a second controller node as standby controller which takes over in the case the first one is down and the users gets maximum network uptime.
The Mikrotik router is monitoring both controllers and data in both controllers are updated in real time through synchronization software .

9. RESULTS & DISCUSSIONS
When user logged in to OpenStack dash board user can monitor total systems load such as number of VMs and VCPUs running , How much memory being used, how many IPs have been activated etc .

10. REFERENCES
A beginner’s guide to understanding OpenStack
OpenStack Architecture
OpenStack Architecture Design Guide
Securing OpenStack Clouds

11. CONCLUSION/FUTURE STEPS
The network is build concentric to the Controller Node of the platform and the network is developed mostly by depending on VM migration or horizontal scaling techniques.
In this article the OpenStack architecture that has been introduced has ensured a redundancy mechanism for the Controller Node to make the platform more reliable and fast and robust.
It have been observed that all applications are running properly with the system developed.

12. THANK YOU