Kubernetes

Structure

• exercise/: exercise - attendees
• solution/: exercise's solution, solution scripts - attendees
• .build/: instruction / build scripts - trainers only
• demo/: demos - trainers only

Build tasks to provision Kubernetes in AWS/GCP/Azure

References

• docker CLI reference: https://docs.docker.com/engine/reference/commandline/docker/
• docker-compose CLI reference: https://docs.docker.com/compose/reference/
• kubectl CLI reference: https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#expose
• kubectl Cheat sheet: https://kubernetes.io/docs/reference/kubectl/cheatsheet/

Sample app from Jérôme Petazzoni - code under Apache License 2.0

Table of contents

• 01-01-01 Docker

  • Start
  • Building Docker Images
    • Dockerfile
      • Note
  • Next steps

• 01-01-02 Docker

  • Tagging and Publishing a Docker Image
    • Tag the Docker images
    • Authenticate to the Docker Hub registry
    • Publish the Docker image
  • Next steps

• 01-01-03 Docker

  • Running Docker Containers
    • Remove local Docker images
    • Start the twkoins_webui service container
  • Cleanup

• 01-02 Docker Compose

  • Start
  • Create a Compose file
  • Container DNS names
  • Scaling our app
  • Docker Compose Limitations
  • Cleanup

• 02-01 Kubectl

  • Setup
    • GCP
    • Azure
  • Start
    • Access to the cluster API
    • Helpful links
  • Getting used to the kubectl CLI
    • Listing the nodes of the cluster
    • Listing the pods of the cluster
    • Links

• 02-02 Kubernetes namespaces

  • Create a namespace

• 02-03 Kubernetes pods

  • Start
  • Create a pod
    • References
  • Show all events occurring in the pod
  • Access the logs of a pod
  • Troubleshoot containers running in a pod
  • Displaying logs from multiple containers (optional part)
  • Delete a pod

• 02-04 Kubernetes replica set

  • Create a replica set
  • Scaling our application to multiple instances
  • Delete a pod in the replicaset
  • Delete the replicaset

• 02-05-01 Kubernetes Deployment and Service

  • Pre-requisites
    • kubectl
    • Kubernetes cluster
  • Create a namespace

• 02-05-02 Kubernetes Deployment and Service

  • Create a deployment

• 02-05-03 Kubernetes Deployment and Service

  • External access to the pod - how to create a basic service

• 03-01 Kubernetes ConfigMaps

  • Start
    • ConfigMaps
  • Cleanup

• 03-02 Kubernetes Secrets

  • Start
    • Secret maps
  • Secrets are encoded, but not encrypted
  • Cleanup

• 03-03 Ingress

  • Ingress rules
    • Nginx ingress controller, path-based routing
    • Nginx ingress controller, using a domain name
    • Nginx ingress controller, one domain name, two services

• 03-04 Helm charts

  • Start
  • Helm charts
  • Install the Helm CLI
    • Windows
    • MacOS
  • Installing a Helm chart from a public repository
  • Why use Helm charts?
  • What is in a Helm chart?
  • Search for a Helm chart in a private repository
  • Run a Helm chart
  • Upgrade and rollback a Helm chart
  • Cleanup

• 03-05 Kustomize

• 04-01 Metrics collection and visualisation

  • Start
  • Application instrumentation with Prometheus
    • Adding metrics to a NodeJS application
    • Collecting application metrics with Prometheus in Kubernetes
    • Visualise metrics in the Prometheus expression browser
    • Grafana application dashboard
    • Resources
  • Cleanup

• 05-01 Azure Kubernetes Service (AKS) cluster

  • Start
  • Kubernetes context and kubeconfig file

• 05-02 Azure Function Core Tools

  • Start
  • Cross platform development with func
  • Cleanup

• 06-01 Feature toggling

  • Exercise 1
    • Kiali
  • Exercise 2
    • Clean up

• 06-02 Traffic Shifting

  • Exercise
    • Kiali
    • Clean up

• 06-03 Fault Injection

  • Setup

• Exercise 1

  • Injecting a HTTP delay fault
    • Configure the rule
    • Testing the delay configuration
    • What happened?
    • Fixing the bug

• Exercise 2

  • Injecting a HTTP abort fault
    • Configure the rule
    • Testing the abort configuration
  • Clean up

• 06-04 Canary Deployments with Flagger

  • Setup
  • Flagger Canary

• 06-05 Observability

  • Setup
  • Prometheus
  • Grafana
  • Jaeger
  • With Kiali
    • Setup
    • Understanding the Graph
    • Workloads
    • Services

• 06-00-01 Service mesh features

  • Getting started

• 06-00-02 Service Mesh Workshop

  • Pre-Workshop Setup
    • Creating the Cluster
    • Installing Istio
    • Kiali

• Exercises

  • Feature Toggles
  • Exercise 1.1
    • Kiali
  • Exercise 1.2
    • Clean up
  • Traffic Shifting
  • Exercise 2.1
  • Exercise 2.2
  • Exercise 2.3
    • Clean up
  • Fault Injection
  • Exercise 3.1
    • Injecting a HTTP delay fault
    • Configure the rule
    • Testing the delay configuration
    • What happened?
    • Fixing the bug

• Exercise 3.2

  • Injecting a HTTP abort fault
    • Configure the rule
    • Testing the abort configuration
    • Clean up
  • Canary Deployments with Flagger
  • Setup
  • Flagger Canary

• Final Cleanup

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