# Fundamentals 04th-05th October 2022

## Welcome

Welcome to the 2 day Kubernetes Fundamentals workshop from [Control Plane](https://control-plane.io)

Slides and exercises will be shared at the end of the course.

## TL;DR

### Links

- [Exercises](https://control.training/fundamentals)
- [Materials](https://drive.google.com/drive/folders/1KE0ZhTZ-bqp11fO5evVuW1kUFYgzwOPp?usp=sharing)
- [Google Cloud Console](https://console.cloud.google.com/)
- [Google Cloud Shell](https://shell.cloud.google.com/)

### Trainers

- [Ahmed Gaber󠁢󠁷󠁬󠁳󠁿]([e-mail])
- [Sophia󠁢 Mexi-Jones󠁷󠁬󠁳󠁿](mailto:[e-mail])

## Schedule

> All times BST

### Day 1

| Time (UK) | Task |
| ------------ | --------------- |
| 09:00 | Setting up |
| 09:30 | Introductions |
| 09:45 | Container Basics |
| 10:30 | **Break** |
| 10:45 | Content |
| 12:00 | **Lunch** |
| 13:00 | Content |
| 15:00 | **Break** |
| 15:15 | Content |
| 16:30 | Quiz |
| 17:00 | Closing Day 1 |

### Day 2

| Time (UK) | Task |
| ------------ | --------------- |
| 09:00 | Setting up |
| 09:30 | Content |
| 10:30 | **Break** |
| 11:00 | Content |
| 12:00 | **Lunch** |
| 13:00 | Content |
| 13:30 | Content |
| 15:00 | **Break** |
| 15:15 | Content |
| 15:45 | Debugging |
| 17:00 | Closing Day 2 |

## Videos

Videos will be added throughout the course:

- [Container Basics](https://vimeo.com/412031802/79eeba76d0)
- [Docker Basics](https://vimeo.com/412031593/278e420d68)
- [Kubernetes Core Resources slides](https://vimeo.com/407555119/4584cc70e4)
- [The Kubernetes Controlplane slides](https://vimeo.com/412029319/fe0b9b53c3)
- [Inter-cluster Networking](https://vimeo.com/407554821/cde1e684df)
- [Network Policy slides](https://vimeo.com/407554981/ab8ed09aa3)
- [Secrets](https://vimeo.com/407555400/7af1c3f6eb)

## Code Snippets

Any code that has been discussed will be shared here making it easier to use

## Slide Links

### Container Basics

- [What is a Container?](https://www.docker.com/resources/what-container)
- [CGROUPS](https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt)
- [Demystifying namespaces and containers in Linux](https://opensource.com/article/19/10/namespaces-and-containers-linux)

### Docker Concepts

- [Best practices for writing Dockerfiles](https://docs.docker.com/develop/develop-images/dockerfile_best-practices/)
- [tianon / dockerfiles](https://github.com/tianon/dockerfiles)
- [Lean Go Containers with Multi-Stage Dockerfiles](https://container-solutions.com/lean-go-containers-multi-stage-dockerfiles/)
- [jwilder / docker-squash](https://github.com/jwilder/docker-squash)
- [Orca build](https://github.com/cyphar/orca-build)
- [Hadolint](https://github.com/hadolint/hadolint)
- [Docker security non-events](https://docs.docker.com/engine/security/non-events/)

### Core Kubernetes Resources

- [kubectl Cheat Sheet](https://kubernetes.io/docs/reference/kubectl/cheatsheet/)
- [Configure Liveness, Readiness and Startup Probes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/)
- [Container Networking From Scratch](https://static.sched.com/hosted_files/kccna18/c1/slides.pdf)
- [Understanding kubernetes networking: services](https://medium.com/google-cloud/understanding-kubernetes-networking-services-f0cb48e4cc82)
- [Learn Kubernetes Basics](https://kubernetes.io/docs/tutorials/kubernetes-basics/)
- [The Almighty Pause Container](https://www.ianlewis.org/en/almighty-pause-container)
- [Minikube](https://minikube.sigs.k8s.io/docs/start/)

### Control Plane Introduction

- [API server ports and IPs](https://kubernetes.io/docs/reference/access-authn-authz/controlling-access/#api-server-ports-and-ips)
- [Runway Model Raft](https://runway.systems/?model=github.com/ongardie/runway-model-raft#)
- [Kubernetes High Availability: No Single Point of Failure](https://thenewstack.io/kubernetes-high-availability-no-single-point-of-failure/)
- [Kube Ops View](https://codeberg.org/hjacobs/kube-ops-view)
- [What happens when ... Kubernetes edition!](https://github.com/jamiehannaford/what-happens-when-k8s)
- [Kubernetes Networking: How to Write Your Own CNI Plug-in with Bash](https://www.altoros.com/blog/kubernetes-networking-writing-your-own-simple-cni-plug-in-with-bash/)

## Training links

> References to tools during training:

- [Distroless](https://github.com/GoogleContainerTools/distroless)
- [kubectx](https://github.com/ahmetb/kubectx) - helps manage which cluster/namespace that you're connecting onto
- [dive](https://github.com/wagoodman/dive) - review the images that you've pulled down
- [k9s](https://k9scli.io/)
- [Strangler Fig Pattern](https://martinfowler.com/bliki/StranglerFigApplication.html)#

## CNI Plug in issue

kubectl apply -f https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s-1.11.yaml

## Docker Debug

> Please try to find the flags :smile:

### Scenario 0

docker run -d --name inspect denhamparry/workshop:0
docker exec -it inspect cat hello.txt

### Scenario 1

docker run --rm --name details denhamparry/workshop:1
docker run --rm --name details -e VERSION=13 denhamparry/workshop:1
mkdir -p /tmp/data
echo "hello" > /tmp/data/hello.txt
docker run --rm --name details -e VERSION=13 -v /tmp/data/:/data denhamparry/workshop:1
echo "13" > /tmp/data/hello.txt
docker run --rm --name details -e VERSION=13 -v /tmp/data/:/data denhamparry/workshop:1

### Scenario 2

docker run --rm --name walls denhamparry/workshop:2
docker run --rm --name walls -p 3333:3333 denhamparry/workshop:2
telnet localhost 3333
friend

## History

A list of what we have done so far, all times GMT

### Day 1

- 09:00 am
- Setup
- 09:30 am
- Introductions
- 09:45 am
- Guide to the workshop
- 10:00 am
- [Container Basics](https://vimeo.com/412031802/79eeba76d0)
- [Docker Basics](https://vimeo.com/412031593/278e420d68)
- 10:25 am
- Review of slides/videos
- 10:30 am
- Break
- 10:45 am
- [Container Basics](https://control.training/fundamentals/modules/container-basics/)
- 12:00 pm
- Lunch
- 13:00 pm
- Container Basics review
- 14:10 pm
- [Kubernetes Core Resources slides](https://vimeo.com/407555119/4584cc70e4)
- [The Kubernetes Controlplane slides](https://vimeo.com/412029319/fe0b9b53c3)
- 14:30 pm
- Installing a Cluster with kubeadm walkthrough
- 15:00 pm
- [Installing a Cluster with kubeadm](https://control.training/fundamentals/modules/installing-a-cluster-with-kubeadm/)
- [Core Kubernetes](https://control.training/fundamentals/modules/core-kubernetes/)
- 16:30 pm
- Quiz
- 17:00 pm
- --FIN--

### Day 2

- 9:00 am
- Docker Debug
- 09:30 am
- Core Kubernetes Review - Namespaces / Pods / Deployments
- 10:00 am
- Demo
- 10:30 am
- Break
- 10:45
- [Inter-cluster Networking](https://vimeo.com/407554821/cde1e684df)
- Services
- Demo
- 12:00 pm
- Lunch
- 13:00 pm
- [Network Policy](https://vimeo.com/407554981/ab8ed09aa3)
- [Networking workshop](https://control.training/fundamentals/modules/networking/)
- 14:00 pm
- [Secrets](https://vimeo.com/407555400/7af1c3f6eb)
- Demo
- 14:45 pm
- Break
- 15:00 pm
- [Secrets workshop](https://control.training/fundamentals/modules/secrets/)
- 17:00 pm
- --FIN--