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Demystifying Kubernetes: The tool to manage Google-scale workloads in the cloud

Once every five years, the IT industry witnesses a major technology shift. In the past two decades, we have seen server paradigm evolve into web-based architecture that matured to service orientation before finally moving to the cloud. Today it is containers.

When launched in 2008, Amazon EC2 was nothing short of a revolution – a self-service portal that launched virtual servers at the click of a button fundamentally changed the lives of developers and IT administrators.Elasticity and automation introduced the powerful paradigm of programmable infrastructure. Applications became self-aware and could scale-out and scale-in dynamically. This concept was exciting five years ago, but not any more.Now, we are witnessing a new technology wave in the form of immutable infrastructure and micro-services. Leading this change is a Linux-based technology called containers, where a single kernel runs multiple instances on a single operating system.

Docker resurrecting container technology

The concept of containers is not new – FreeBSD, Solaris, Linux and even Microsoft Windows had some sort of isolation to run self-contained applications. When an application runs within a container, it gets an illusion that it has exclusive access to the operating system. This reminds us of virtualisation, where the guest operating system (OS) lives in an illusion that it has exclusive access to the underlying hardware.

Containers and virtual machines (VMs) share many similarities but are fundamentally different because of the architecture. Containers run as lightweight processes within a host OS, whereas VMs depend on a hypervisor to emulate the x86 architecture. Since there is no hypervisor involved, containers are faster, more efficient and easier to manage.

One company that democratised the use of Linux containers is Docker. Though it did not create the container technology, it deserves the credit for building a set of tools and the application programming interface (API) that made containers more manageable.

Like most of the successful product launches, Docker was well-timed and came at a point when the industry was looking for better ways to exploit cloud to run web-scale workloads.

Read the complete article at Computer Weekly

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Janakiram MSV heads the Cloud Infrastructure Services at Aditi Technologies. He was the founder and CTO of Get Cloud Ready Consulting, a niche Cloud Migration and Cloud Operations firm that recently got acquired by Aditi Technologies. In his current role, he leads a highly talented engineering team that focuses on migrating and managing applications deployed on Amazon Web Services and Microsoft Windows Azure Infrastructure Services.
Janakiram is an industry analyst with deep understanding of Cloud services. Through his speaking, writing and analysis, he helps businesses take advantage of the emerging technologies. He leverages his experience of engaging with the industry in developing informative and practical research, analysis and authoritative content to inform, influence and guide decision makers. He analyzes market trends, new products / features, announcements, industry happenings and the impact of executive transitions.
Janakiram is one of the first few Microsoft Certified Professionals on Windows Azure in India. Demystifying The Cloud, an eBook authored by Janakiram is downloaded more than 100,000 times within the first few months. He is the Chief Editor of a popular portal on Cloud called www.CloudStory.in that covers the latest trends in Cloud Computing. Janakiram is an analyst with the GigaOM Pro analyst network where he analyzes the Cloud Services landscape. He is a guest faculty at the International Institute of Information Technology, Hyderabad (IIIT-H) where he teaches Big Data and Cloud Computing to students enrolled for the Masters course. As a passionate speaker, he has chaired the Cloud Computing track at premier events in India.
He has been the keynote speaker at many premier conferences, and his seminars are attended by thousands of architects, developers and IT professionals. His sessions are rated among the best in every conference he participates.
Janakiram has worked at the world-class product companies including Microsoft Corporation, Amazon Web Services and Alcatel-Lucent. Joining as the first employee of Amazon Web Services in India, he was the AWS Technology Evangelist. Prior to that, Janakiram spent 10 years at Microsoft Corporation where he was involved in selling, marketing and evangelizing the Microsoft Application Platform and Tools.