What is a Container? Technical Characteristics of a Container

The issues arising regarding software dependency on the system environment when handing over products and applications are immense. So, what is the way to mitigate this risk? The answer is virtualization technology. In this article, Vcloudia will share insights about a virtualization technology currently "taking by storm" in the domestic and global technology communities, which is the "Container".

What is a Container?

A container is a solution to address the problem of how to reliably deliver software (without errors) across different computing environments. For instance, between a developer's computer and a tester's machine, between a staging environment (also known as a pre-production environment) and a production environment, or even between a dedicated server located in a data center and a virtual machine on the Cloud.

Containers solve the above problem by creating an isolated environment containing everything the software requires to run, including source code, runtime libraries, system libraries, and system tools, etc. (referred to as dependencies), without being impacted by factors related to the system environment or affecting the rest of the system.

Technical Characteristics of a Container

The architectural model of a container consists of main components: the Server (physical server or virtual machine), host OS (operating system installed on the server), and containers.

Each application (App A and App B) will possess its own distinct dependencies, encompassing both software (services or libraries) and hardware (CPU, memory, storage).

These applications will be packaged by the Container Engine, a streamlined virtualization tool installed on the host OS, which isolates the dependencies of various applications by bundling them into containers. The processes within one container are isolated from the processes of other containers within the same system; however, all these containers share the host OS kernel (utilizing a common host OS).

With the aforementioned model, the application's dependency on the OS layer as well as the infrastructure is eliminated, making the implementation of the container's "deploy anywhere" approach significantly more efficient. Furthermore, because they share the host OS, containers can be created almost instantaneously, enabling scale-up and scale-down operations according to demand to be executed rapidly.

For businesses looking to accelerate the deployment of Kubernetes infrastructure, Open Kubernetes Service (OKS) offers a dedicated environment that can be rapidly provisioned on Vcloudia’s public cloud platform. The service supports centralized management, flexible resource scaling, and a reduced operational workload for technical teams.

Learn more at: https://vcloudia.com/en/kubernetes-service