How do you virtualize and containerize?

Virtualization is essential in modern IT, even (if not - especially) if your company has only one server :). It's not only a cost-saver, allowing you to use multiple virtual machines on a single server (and thus use resources more efficiently); it's a catalyst for agility. Need a new server instance? It can be up and running in minutes. Virtualization is also the basis of cloud computing and containerization. Why use a public cloud when you can create your own (with blackjack and... :])? Backups? Easy. By not implementing virtualization, you are not only wasting resources, but also limiting your IT's potential for adaptability and scalability.

Overall, virtualization is a foundational technology that offers numerous benefits like efficient resource utilization, flexibility, and easier management. It has become a vital component in modern IT infrastructure. It is absolutely mandatory to have at least an understanding of the fundamentals of virtualization if one wants to be successful in today's technology driven world.

I often virtualise and containerise applications to test applications and operating systems before considering such applications in a production environment. It helps me lower the cost to about 95%, meeting the financial needs for critical projects. Virtualisation is a way of running a new operating system without shutting down the main computer or server. The new operating system shares the same resources as the hardware the main operating system is using. Containerisation is a way of running applications minimally without the need for a full operating system, thereby reducing the space consumed and resources. For example application inside a virtual machine.

Yes, i am totally agree with that. Virtualisation is on of the excellent feature that save time, resources, and cost as well.

Virtualization is great for isolating entire operating systems, making it suitable for running different OS versions on the same hardware. - Containerization is perfect for isolating applications and their dependencies, ensuring consistent deployment and scaling. Both technologies offer benefits like resource isolation, scalability, and flexibility, but the choice between them depends on your specific use case and requirements. Often, they are used together, with containers running inside virtual machines for added isolation and security.

When using containerization for scalability, consider adopting a stateless architecture for your applications. Stateless applications store data and state outside of the application instance itself, relying on external databases or storage systems. This approach enhances scalability because containers can be easily spun up or down without concerns about data consistency or synchronization.

In very basic terms you could think of a container as being like a web application you use instead of traditional software. All the same functionality still exists, but instead of installing the application on your computer, you run it in the browser. Containers are a little more complicated than this but the premise is the same. Take a traditional application and run it away from your computer.

Talking about some details like sharing libs, kernel also cgroups and all kind of namespaces that enables applications to be containerized without the need of creating new VMs

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Both virtualization and containerization have their advantages, and the choice between them depends on your specific use case and requirements.

Ambas tecnologías se comparan con la elección entre un coche y una bicicleta en una ciudad. La virtualización, compacta y versátil, transporta varios pasajeros y se adapta a diferentes condiciones en la carretera o el clima, ofreciendo un entorno aislado y protegido, pero con mayores costes. En contraste, un contenedor, al igual que una bicicleta, es ligera y ágil, perfecta para desplazamientos en entornos urbanos con mucho tráfico. Aunque no proporciona el mismo nivel de aislamiento que un coche, es más eficiente en términos de recursos e ideal para trayectos cortos. En definitiva, la elección entre virtualización y contenedorización dependerá de las necesidades específicas, el contexto y las metas a largo plazo de una organización.

The benefits of virtualization are so many that it's fair to say that a business cannot survive in today's market if it does not adopt virtualization for its environment.

Yes that’s right. It help in managing servers and resources. In terms of resources, we can use shared resources which will save resources for other machines as well.

Although virtualization will still be used extensively for the foreseeable future, it's steadily becoming only one tool in an arsenal of tools that support today's workloads. To accommodate both legacy and modern applications, virtualization vendors must continue to modify their portfolios to meet the demands of organizations that require platforms capable of supporting their fluctuating and evolving workloads.

It would nice to talk about what someone would study to become a specialist at Virtualization, Containerization. Also the career path that's is related to this subject.