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Learn Kubernetes: A Deep Dive

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Kubernetes Primer

Kubernetes Background Where Did Kubernetes Come From?The Operating System of the Cloud Quiz: Kubernetes Primer Summary: Kubernetes Primer

Kubernetes Principles of Operation

Kubernetes From 40K Feet Control Plane and Nodes: Control Plane Control Plane and Nodes: Worker Nodes Packaging Apps for Kubernetes The Declarative Model and the Desired State Pods Deployments Quiz: Kubernetes Principles Summary: Kubernetes Principles

Getting Kubernetes

Local Kubernetes Cluster Hosted Kubernetes Cluster Working with kubectl Summary: Getting Kubernetes

Working With Pods: Theory

Pod Theory Pods and Scheduling Pod Lifecycle How Do We Deploy Pods Multi-container Pods: Init Containers Quiz: Theory of Working With Pods Summary: Theory of Working With Pods

Working with Pods: Hands-On

Pod Manifest Files Manifest Files: Empathy as Code Introspecting Pods kubectl exec: Running Commands in Pods Check Pod Immutability Multi-container Pod Example – Init Container Multi-container Pod Example – Sidecar Container Quiz: Working Hands-on With Pods Summary: Working Hands-on With Pods

Virtual Clusters with Namespaces

Namespaces Namespace Use Cases Default Namespaces Creating and Managing Namespaces Deploying to Namespaces Quiz: Virtual Clusters with Namespaces Summary: Virtual Clusters with Namespaces

Kubernetes Deployments

Deployment Theory ReplicaSets and Scaling Rolling Updates With Deployments How to Create a Deployment Accessing Deployments Accessing the Apps Performing a Rolling Update How to Perform a Rollback Quiz: Kubernetes Deployments Summary Kubernetes Deployments

Kubernetes Services: Theory

Introduction to Services Labels and Loose Coupling Services and Endpoints Objects Accessing Apps From Inside the Cluster Accessing Apps From Outside the Cluster Quiz: Theory of Kubernetes Services Summary: Theory of Kubernetes Services

Kubernetes Services: Hands-On

Create a Service - The Imperative Way Create a Service - The Declarative Way Introspecting Services and Endpoint Objects Quiz: Hands-On With Kubernetes Services Summary: Hands-On With Kubernetes Services

Ingress

Setting the Scene for Ingress Ingress Architecture Working with NGINX Controller Configure Host-Based and Path-Based Routing Inspecting Ingress Objects Quiz: Ingress Summary: Ingress

WebAssembly on Kubernetes

WebAssembly Primer Wasm on Kubernetes Build and Prepare the Wasm App Build and Configure Kubernetes for Wasm Deploy and Test the App Quiz: WebAssembly on Kubernetes Summary: WebAssembly on Kubernetes

Service Discovery Deep Dive

Understanding Service Discovery The Service Registry Service Registration Service Discovery Service Discovery and Namespaces Troubleshooting Service Discovery Quiz: Service Discovery Summary: Service Discovery

Kubernetes Storage

The Big Picture Storage Providers and Container Storage Interface The Kubernetes Persistent Volume Subsystem Storage Classes and Dynamic Provisioning Provision Volume using an Existing StorageClass Provision Volume by Creating a New StorageClass Quiz: Kubernetes Storage Summary: Kubernetes Storage

ConfigMaps

Introduction to ConfigMaps

ConfigMap Theory

Hands-On: Creating ConfigMaps Imperatively

Hands-On: Creating ConfigMaps Declaratively

Injecting ConfigMap and Secret Data Into Pods and Containers

Hands-on with Secrets

Quiz: ConfigMaps

Summary: ConfigMaps

StatefulSets

Introduction to StatefulSets Ordered Creation and Deletion Volumes and Handling Failures Network and Headless Services Hands-On With StatefulSets Creating a Governing Headless Service Deploy the StatefulSet Testing Peer Discovery Scaling StatefulSets Test a Pod Failure Quiz: StatefulSets Summary: StatefulSets

API Security and RBAC

API Security Big Picture Authentication Authorization (RBAC)Cluster-level users and permissions Admission Control Quiz: API Security and RBAC Summary: API Security and RBAC

Kubernetes API

Introduction to Kubernetes API API Analogy The API Server A Word on CRUD The API Inspecting the API Alpha, Beta, and Stable Quiz: Kubernetes API Summary: Kubernetes API

Threat Modeling Kubernetes

Introduction to Threat Modeling Spoofing Tampering Repudiation Information Disclosure Denial of Service Elevation of Privilege Protecting Pods Pod Security Admission Quiz: Threat Modeling Kubernetes Summary: Threat Modeling Kubernetes

Real-World Kubernetes Security

CI/CD Pipeline Moving Images From Non-Production to Production Workload Isolation Identity and Access Management (IAM)Auditing and Security Monitoring Quiz: Real-World Kubernetes Security Summary: Real-World Kubernetes Security

Conclusion

Glossary Wrap Up

Summary: ConfigMaps

A quick summary of the concepts learned in this chapter.

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Recap

Recap

ConfigMaps and Secrets are the Kubernetes-native way of decoupling applications and associated configuration data. Both are first-class objects in the Kubernetes API, we can create them imperatively and declaratively, and we can inspect them with kubectl

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