Kubernetes Administration (GL360)

Audience

Systems administrators and DevOpsprofessionals

Prerequisites

• Proficiency with the Linux CLI (U8583S: Linux Fundamentals (GL120))
• A broad understanding of Linux system administration (H7091S: Enterprise Linux Systems Administration (GL250))
• Basic knowledge of Linux containers, e.g. Docker (H0DS3S: Docker (GL340))

Detailed course outline

Core Concepts

• CKA objectives covered
• Kubernetes architecture
• Cluster communication
• Objects
• Object properties
• Labels and selectors
• Annotations
• Object management
• Image fundamentals
• Container fundamentals
• Pod fundamentals
• Working with pods
• Writing YAML files

Installation

• CKA objectives covered
• Installation prerequisites
• Installation (single node)
• Installation (production)
• Client tool optimizations
• Installing HA control plane (demo)

Application Lifecycle Management

• CKA objectives covered
• Pod lifecycle
• Container lifecycle
• Init containers
• Container: command and args
• Container: defining environment
• ReplicaSet
• Deployments
• Working with deployments
• Deployment rollouts

Networking

• CKA objectives covered
• Network overview
• Service discovery and CoreDNS
• Container Network Interface (CNI)
• Services
• Ingress objects

Storage

• CKA objectives covered
• Storage
• Volume types
• Static volumes (demo)
• ConfigMap

Security

• Controlling access to the Kubernetes API
• Kubectl configuration
• Admission controllers
• Pod security policies admission controller
• Default admission controllers

Scheduling

• CKA objectives covered
• Controlling and tracking resources
• Scheduler operation
• DaemonSet
• Node affinity and anti-affinity
• Pod affinity and anti-affinity
• Taints and tolerations

Jobs and CronJobs

• Jobs
• CronJobs

Linux Containers

• Application management landscape
• Application isolation
• Resource measurement and control
• Container security
• OverlayFS overview
• Container security
• Open container initiative