Managing Clusters and Containers with Kubernetes Training

This Kubernetes (K8s) course teaches attendees the architecture behind Kubernetes and how to design and manage K8s clusters.

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Course Details

Duration

3 days

Prerequisites

Be comfortable using command shell commands in a Linux or Unix environment.

Skills Gained

Understand the architecture of Kubernetes and use basic terminology
Design and Manage Kubernetes Clusters

Course Outline

Chapter 1. Overview of Containerization Systems

Modern Infrastructure Terminology
Virtualization
Hypervisors
Hypervisor Types
Type 1 Hypervisors
Type 2 Hypervisors
Type 1 vs Type 2 Processing
Paravirtualization
Virtualization Qualities (1/2)
Virtualization Qualities (2/2)
Disadvantages of Virtualization
Containerization
Virtualization vs Containerization
Where to Use Virtualization and Containerization
Containerization: High-Level
Popular Containerization Systems
What are Linux Containers
Docker
OpenVZ
Solaris Zones (Containers)
Container Orchestration Tools
Docker Swarm
Kubernetes
Mesos and Marathon
Mesos and Marathon (contd.)
Docker Use-Cases
Microservices
Microservices and Containers / Clusters
Summary

Chapter 2. Introduction to Docker

Docker Basics
Where Can I Run Docker?
Installing Docker Container Engine
Docker Toolbox
What is Docker?
Docker Architecture
Docker Architecture Diagram
Docker Images
Docker Containers
Docker Integration
Docker Services
Docker Application Container Public Repository
Docker Run Command
Starting, Inspecting, and Stopping Docker Containers
Docker Volume
Dockerfile
Docker Compose
Using Docker Compose
Dissecting docker-compose.yml
Specifying services
Dependencies between containers
Injecting Environment Variables
Summary

Chapter 3. Getting Started with Kubernetes

Kubernetes Basics
What is Kubernetes?
Container Orchestration
Kubernetes Architecture
Kubernetes Concepts
Cluster and Namespace
Nodes
Master
Pod
Using Pods to Group Containers
Label
Label Syntax
Annotation
Label Selector
Replication Controller and Replica Set
Service
Storage Volume
Secret
Resource Quota
Authentication and Authorization
Routing
Docker Registry
Summary

Chapter 4. Application Administration in Kubernetes

Installation
Startup
Kubernetes Tools
kubectl Command Line Interface
API Proxy
Dashboard
Kubernetes Component Hierarchy
Deployments
Deployment Commands
Updating Deployments
Network Considerations
Services
Namespaces
Other Useful Commands
Summary

Chapter 5. Kubernetes Cluster Administration Overview

Architecture Diagram
Components
Kubernetes Cluster
Master Node
Kube-Control-Manager
Nodes
Other Components
Interacting with Kubernetes
Summary

Chapter 6. Planning and Designing a Kubernetes Cluster

Cloud Native Security
Code Security
Container Security
Cluster Security
Cloud/Data Source Security
Access Management
API Server Ports
API Access
Security Policies
RBAC Role Based Access Control
Role Example
ClusterRole Example
Granting Roles to Users
Security Contexts
Kubernetes Namespaces
Namespace Advantages
Initial Namespaces
Custom Namespaces
Namespaced Objects
kubectl Commands and Namespaces
Uses for Namespaces
Summary

Chapter 8. Managing Kubernetes Nodes

Kubernetes Scheduler Overview
Trusting the Kubernetes Scheduler
Scheduling Process
Scheduling Process - Predicates
Scheduling Process - Priorities
Scheduling Algorithm
Kubernetes Scheduling Algorithm
Scheduling Conflicts
Controlling Scheduling
Label Selectors
Label Selectors (Contd.)
Node Affinity and Anti-affinity
Node Affinity Example
Node Antiaffinity Example
Taints and Tolerations
Taints and Tolerations (Contd.)
Taints and Tolerations - Example
Summary

Chapter 9. Managing Kubernetes Clusters

Kubernetes Cluster
Points of Configuration
Sizing a Cluster
Resizing a Cluster
Horizontal auto-scaling
Maintenance on a Node
Kubernetes Cluster Limits
Considerations for Running Large Clusters
Considerations for Running Multiple Clusters
Multi-Cluster Architectural Choices
Resource Quotas
Example Resource Allocation
Cluster Failure Modes
Cluster Troubleshooting Workflow
Summary

Chapter 10. High-Availability K8S Clusters

Overview
Cluster Components
Reliable Nodes
Reliable Storage
Replicated API Servers
Load Balancing
Cluster Control Components
Installing Configuration Files
Summary

Chapter 11. K8S Cluster Configuration Best Practices

Cluster Configuration Best Practices
Specifying Kubernetes Version
YAML vs. JSON for Configurations
Apply Multiple Resource Config Files at Once
Combining Multiple Resource Config Files
Use Standalone Pods for Temporary Work
Use Deployments to Manage Pods with ReplicaSets
Let Kubernetes Assign Ports
Use Namespaces and Labels
Managing Container Images
Other General Tips
Summary

Lab Exercises

Lab 1. Managing Docker Containers
Lab 2. Building Docker Images
Lab 3. Dockerfiles
Lab 4. Accessing the Kubernetes API
Lab 5. Working with Kubernetes Workloads
Lab 6. Kubernetes Cluster Overview
Lab 7. Planning a Kubernetes Cluster
Lab 8. Accessing Applications
Lab 9. Scheduling and Node Management
Lab 10. High-Availability K8s Clusters