Getting Started With Kubernetes: Application Basics

The article is the second in a series exploring the use of infrastructure as code to deploy applications with Kubernetes, specifically focusing on deploying applications using Kubernetes objects like Pods, Services, Volumes, Namespaces, and Controllers. It explains how Kubernetes is more than just a container orchestrator, emphasizing its capabilities for scaling applications and maintaining high availability by managing multiple instances of application containers. The article details the lifecycle and states of Pods, the role of Services in routing traffic to Pods, and the importance of PersistentVolumes for data persistence beyond container lifecycles. It also elaborates on the use of Namespaces for organizing virtual clusters and Controllers for managing application states. The article culminates with a practical example of deploying an Nginx application using Pulumi, illustrating how programming languages can offer advantages over traditional YAML manifests by providing enhanced development tools, such as variable definitions, error checking, and code completion, which can reduce errors typically associated with manually editing YAML files. The article hints at future content focusing on more complex application deployments and the use of Helm charts in Kubernetes environments.

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