Hannes Norbert Göring

Mastering Kubernetes – Beginner Edition

What if deploying complex applications was as simple as mailing a letter? Learn how Kubernetes makes this a reality for developers.

Mastering Kubernetes – Beginner Edition
#1about 1 minute

The origins and history of the Kubernetes project

Kubernetes evolved from Google's internal Borg system to become the leading open-source container orchestrator.

#2about 3 minutes

A review of containers and early orchestration tools

Containers standardize application packaging, while tools like Docker Swarm and Docker Compose address orchestration needs at different scales.

#3about 4 minutes

How to communicate with and configure a cluster

Use the kubectl command-line tool and declarative YAML manifests to manage and configure your Kubernetes cluster resources.

#4about 4 minutes

Understanding master nodes and worker nodes in a cluster

The master node manages the cluster's state and schedules work, while worker nodes execute the actual containerized applications.

#5about 4 minutes

Using pods as the fundamental unit of execution

A Pod is the smallest deployable unit in Kubernetes, acting as a logical wrapper for one or more containers.

#6about 6 minutes

Managing application replicas and updates with Deployments

Deployments manage ReplicaSets to ensure a specified number of pod replicas are running and to control rolling updates.

#7about 2 minutes

Running pods on specific nodes using DaemonSets

A DaemonSet ensures that a copy of a pod runs on all or a specific subset of nodes in the cluster.

#8about 4 minutes

Exposing applications using Services and Ingress controllers

Services provide stable internal networking and load balancing for pods, while Ingress manages external HTTP/S access to those services.

#9about 3 minutes

How to manage application configuration and secrets

Decouple sensitive information and configuration from your application code using Secrets and ConfigMaps.

#10about 3 minutes

Providing persistent storage for stateful applications

Persistent Volume Claims allow stateful applications like databases to request and mount durable storage that outlives the pod lifecycle.

#11about 1 minute

Isolating resources within a cluster using namespaces

Namespaces function as virtual clusters within a single physical cluster, allowing you to partition resources between different teams or projects.

#12about 3 minutes

A high-level overview of Kubernetes cluster architecture

A complete request flows from an external user through a cloud load balancer, Ingress, Service, and finally to a Pod running the application.

#13about 2 minutes

A practical example of a webshop on Kubernetes

A real-world webshop example demonstrates how to structure microservices like APIs and databases using various Kubernetes resources.

#14about 6 minutes

A summary of concepts and the postal office analogy

Kubernetes acts like a postal service for your applications, where you define the destination and it handles all the complex delivery logistics.

#15about 9 minutes

Q&A on desired state, self-healing, and project scope

Key questions are answered regarding Kubernetes's promise theory, self-healing capabilities, and its suitability for small versus large projects.

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