Descrizione

Il Corso Kubernetes Developers CKAD è progettato per insegnare come utilizzare Kubernetes per distribuire, scalare e gestire le applicazioni containerizzate. Gli obiettivi del corso includono la comprensione dell’architettura e dei componenti di Kubernetes, l’interazione con un cluster Kubernetes tramite kubectl, l’uso di manifesti YAML per definire e distribuire applicazioni, l’implementazione di servizi di rete per esporre le applicazioni, la gestione dello storage per i dati delle applicazioni, l’implementazione di best practice di sicurezza e accesso, l’integrazione di Kubernetes con i processi di Continuous Integration e Continuous Deployment (CI/CD) e, infine, la preparazione per l’esame di Certificazione Kubernetes Application Developer CKAD.

Target

Questo corso è rivolto agli ingegneri Kubernetes, agli ingegneri cloud e ad altri professionisti IT responsabili della creazione, distribuzione e configurazione di applicazioni cloud native con Kubernetes.

Prerequisiti

Conoscenza di base runtime dei container e dell'architettura dei microservizi.

Programma Corso

Kubernetes Architecture

• Introduction to Kubernetes Architecture
• Components of Kubernetes
• Challenges
• The Borg Heritage
• Kubernetes Architecture
• Terminology
• Control Plane Node
• Control Plane Node Components
• Worker Nodes
• Pods
• Services
• Operators
• Single IP per Pod
• Networking Setup
• API Call Flow
• CNI Network Configuration File
• Pod-to-Pod Communication
• Cloud Native Computing Foundation (CNCF)
• Resource Recommendations

Build

• Introduction to Build
• Build
• Container Options
• Container Runtime Interface (CRI)
• containerd
• CRI-O
• Docker
• rkt
• Containerizing an Application
• Rewrite Legacy Applications
• Creating the Dockerfile
• Hosting a Local Repository
• Creating a Deployment
• Running Commands in a Container
• Multi-Container Pod
• readinessProbe, liveness Probe, and startupProbe
• Testing
• Helm

Design

• Introduction to Design
• Design
• Traditional Applications – Considerations
• Decoupled Resources
• Transience
• Flexible Framework
• Managing Resource Usage
• Using Label Selectors
• Multi-Container Pods
• Sidecar, Adapter, Ambassador, and initContainers
• Custom Resource Definitions
• Points to Ponder
• Jobs

Deployment Configuration

• Introduction to Deployment Configuration
• Deployment Configuration
• Volumes Overview
• Introducing Volumes
• Volume Spec
• Volume Types
• Shared Volume Example
• Persistent Volumes and Claims
• Phases to Persistent Storage
• Persistent Volume
• Persistent Volume Claim
• Dynamic Provisioning
• Secrets
• Using Secrets via Environment Variables
• Mounting Secrets as Volumes
• Portable Data with ConfigMaps
• Using ConfigMaps
• Deployment Configuration Status
• Scaling and Rolling Updates
• Deployment Rollbacks

Understanding Security

• Introduction to Understanding Security
• Security
• Accessing the API
• Authentication
• Authorization
• RBAC and the RBAC Process Overview
• Admission Controller
• Security Contexts
• Pod Security Policies (PSPs)
• Pod Security Standards
• Network Security Policies
• Network Security Policy Example
• Default Policy Example

Exposing Applications

• Introduction
• Introduction to Exposing Applications
• Exposing Applications
• Service Types
• Services Diagram
• Service Update Pattern
• Accessing an Application with a Service
• Service Without a Selector
• ClusterIP
• NodePort
• LoadBalancer
• ExternalName
• Ingress Resource
• Ingress Controller
• Service Mesh

Application Troubleshooting

• Troubleshooting
• Basic Troubleshooting Steps
• Ongoing (Constant) Change
• Basic Troubleshooting Flow: Pods
• Basic Troubleshooting Flow: Node and Security
• Basic Troubleshooting Flow: Agents
• Monitoring
• Logging Tools
• Monitoring Applications
• System and Agent Logs

Attività Laboratoriali

• How to connect to lab
• Work with the cluster
• Imperative and declarative
• API
• Namespace
• Labels
• Running Pods
• Pod Lifecycle
• Implementing container probes
• System Pods and Controllers
• Create Deployment
• Create Deployment-Replicaset
• Update a Deployment
• Rolling back a Deployment
• Scaling a Deployment
• Running Multi-container Pods
• Running Sidecar Containers
• Running Adapter Containers
• Storage Static Provisioning
• Storage Dynamic Provisioning
• Environment Variables
• Secrets
• Private Container Registry
• ConfigMap
• Services
• Service Discovery
• Ingress
• Logging
• Troubleshooting Workloads
• Authentications
• Manage Authorizations
• kubeconfig and context
• RBAC

Certificazione

Certified Kubernetes Application Developer CKAD