February 2022
Intermediate to advanced
322 pages
8h 9m
English
Content preview from Cloud Native Infrastructure with Azure
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Chapter 4. Kubernetes: The Grand Orchestrator
As monolithic applications were broken down into microservices, containers became the de facto housing for these microservices. Microservices are a cloud native architectural approach in which a single application is composed of many smaller, loosely coupled, and independent deployable components or services. Containers ensure that software runs correctly when moved between different environments. Through containers, microservices work in unison with other microservices to form a fully functioning application.
While breaking monolithic applications into smaller services solves one problem, it creates bigger problems in terms of managing and maintaining an application without significant downtime, networking the various microservices, distributed storage, and so on. Containers help by decoupling applications into fast-moving, smaller codebases with a focus on feature development. However, although this decoupling is clean and easy at first since there are fewer containers to manage, as the number of microservices in an application increases it becomes nearly impossible to debug, update, or even deploy the containerized microservices safely into the stack without breaking something or causing downtime.
Containerizing applications was the first big step toward creating self-healable environments with zero downtime, but this practice needed to evolve further, especially in terms of software development and delivery in cloud native environments. ...
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