In the fast-moving world of cloud-native development, Kubernetes (K8s) has become the gold standard for container orchestration. Whether you’re scaling a global application or managing a handful of microservices, understanding the core components of K8s is no longer optional—it's essential for any DevOps engineer.
: Allows you to constrain which nodes your pod can be scheduled on based on labels of pods that are already running on those nodes.
While there isn't a single official "50 Concepts" free PDF from the Kubernetes project itself, the book 50 Kubernetes Concepts Every DevOps Engineer Should Know
A directory accessible to containers in a pod. Data survives container restarts within that specific pod. 29. PersistentVolume (PV) While there isn't a single official "50 Concepts"
Setting up clusters in major clouds like Azure (AKS) , AWS (EKS) , and GCP (GKE) , as well as on-premises reality checks.
Manages external access to services, typically HTTP/HTTPS, often providing load balancing and SSL termination.
Scratch space. Pods have temporary disk space (logs, emptyDir volumes). You must control this via ephemeral-storage requests/limits. PersistentVolume (PV) Setting up clusters in major clouds
The cluster's "brain" that makes all global decisions: pod scheduling, failure detection, and event response. It includes the API Server, etcd, Scheduler, and Controller Manager.
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A network proxy running on each node. It maintains network rules on nodes, allowing network communication to pods from inside or outside the cluster. 10. Container Runtime Mastering Kubernetes is a marathon
The "50 Concepts" curriculum is designed to move a DevOps engineer from basic understanding to production-level management. Key areas include: 50 Kubernetes Concepts Every DevOps Engineer Should Know
Kubernetes (K8s) has become the de facto standard for container orchestration, making it an essential tool for any DevOps engineer. Mastering Kubernetes is a marathon, not a sprint, given its massive ecosystem and evolving nature.
Creates one or more pods and ensures they run to completion.