50 Kubernetes Concepts Every Devops Engineer Should Know Free Pdf !exclusive! Jun 2026
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Below is a comprehensive breakdown of the essential Kubernetes concepts every DevOps engineer must understand, organized by category.
The front end for the Kubernetes control plane. It exposes the HTTP API that users, tools, and internal components communicate through. This public link is valid for 7 days
Never hardcode passwords in your image.
An abstract way to expose an application running on a set of pods as a network service. 20. ClusterIP Can’t copy the link right now
The firewall of Kubernetes. It specifies how groups of pods are allowed to communicate with each other and other network endpoints. 26. CoreDNS
If you stumbled on any of the above,
A set of rules that give hints to the scheduler about where to place pods. Node affinity uses node labels and can be either "required" (hard constraints) or "preferred" (soft constraints).
An API object used to store non-confidential data in key-value pairs. It separates environment-specific configurations from container images. 34. Secret The front end for the Kubernetes control plane
: Maps a Service to a DNS name instead of a selector, acting as a simple internal alias.
Similar to a ConfigMap but specifically used to hold sensitive data like passwords, tokens, or SSH keys. 35. Environment Variables