Introduction to Kubernetes

1. 1Why Kubernetes Exists: From One Box to a Fleetp. 1
2. 2Servers vs VMs vs Containers, and the K8s Brainp. 2
3. 3Worker Nodes and the Resource Model (YAML)p. 3

Hands-On: Installation & Local Cluster

1. 4Installing Kubernetes: Picking Your Battle (kubeadm vs Managed vs Local)p. 4
2. 5Hands-On: kubeadm on Ubuntu + minikube on Your Laptopp. 5

Kubernetes Objects

1. 6Kubernetes Objects, Images & Nodesp. 6
2. 7Namespaces, Labels & Jobsp. 7

Hands-On: Pods

1. 8Pods 101: The Smallest LEGO Brick in Kubernetesp. 8
2. 9Writing a Pod Manifest (& Poking Inside with kubectl exec)p. 9
3. 10Two Containers, One Pod: The Sidecar Patternp. 10

ReplicaSets & Deployments

1. 11Replication Controller — The Original Pod Babysitterp. 11
2. 12ReplicaSet — Keeping N Pods Running (and why it beat RC)p. 12
3. 13Deployments — Rolling Updates, Rollbacks & Revision Historyp. 13

Scheduling

1. 14Scheduling: How Pods Find a Home (Scheduler + nodeName)p. 14
2. 15Steering Pods: Taints, Tolerations & Node Affinityp. 15

Services & Networking

1. 16Services: A Stable Address for Disposable Podsp. 16
2. 17ClusterIP vs NodePort: Internal Plumbing vs the Side Doorp. 17
3. 18LoadBalancer, DNS Discovery & Locking Down Trafficp. 18

Hands-On: Storage & Secrets

1. 19Volumes & Persistent Storage in Kubernetesp. 19
2. 20Secrets — Storing & Consuming Sensitive Datap. 20

Hands-On: Working with kubectl

1. 21kubectl: The Cluster Remote Controlp. 21
2. 22Essential Commands + create vs apply vs deletep. 22

Hands-On: ConfigMaps

1. 23ConfigMaps 101: Stop Hardcoding Your Configp. 23
2. 24Injecting ConfigMaps: Env Vars vs Mounted Filesp. 24