Docker and Kubernetes workshop

README.md

Docker

Source: https://gist.github.com/bradtraversy/89fad226dc058a41b596d586022a9bd3#file-docker-help-md

Containers

docker version
docker info
docker help

docker container run -it -p 80:80 nginx
docker run -it -p 80:80 nginx

docker container run -d -p 80:80 nginx
docker container run -d -p 80:80 --name nginx-server nginx

docker container ls
docker ps

docker container logs nginx-server
docker container stats nginx-server

docker container stop nginx-server
docker container start nginx-server

docker container run -it --name nginx-bash-test nginx bash
docker container exec -it nginx-server bash

docker container rm nginx-server
docker container rm -f nginx-server
docker rm -f $(docker ps -aq)

Images

docker image ls
docker pull [IMAGE]

docker image build -t nginx-website .
docker container run -d -p 80:80 nginx-website

docker rm -f $(docker ps -aq)
docker image rm nginx-website

Docker Compose

docker-compose up
docker-compose up -d
docker-compose ps
docker-compose stop
docker-compose start
docker-compose down

Kubernetes

Source: https://cloud.google.com/kubernetes-engine/docs/quickstarts/deploy-app-container-image

gcloud config set project pixie-playground
gcloud config set "compute/zone" europe-west3-a
gcloud config set "compute/region" europe-west3

gcloud container clusters create antonmry-pixie-cluster --num-nodes=2 --machine-type=e2-standard-4
gcloud container clusters get-credentials antonmry-pixie-cluster
kubectl get nodes
kubectl get pods --all-namespaces

kubectl apply -f deployment.yaml
kubectl get deployments
kubectl get pods

kubectl apply -f service.yaml
kubectl get services

kubectl scale deployment helloworld-gke --replicas=3
kubectl autoscale deployment helloworld-gke --cpu-percent=80 --min=1 --max=5

gcloud container clusters delete antonmry-pixie-cluster 

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-gke
spec:
  replicas: 1
  selector:
    matchLabels:
      app: hello
  template:
    metadata:
      labels:
        app: hello
    spec:
      containers:
      - name: hello-app
        image: nginx:latest
        ports:
        - containerPort: 80
        env:
          - name: PORT
            value: "80"

docker-compose.yml

version: '2'

services:
  nginx:
    image: nginx
    ports:
      - '80:80'

Dockerfile

FROM nginx:latest
WORKDIR /usr/share/nginx/html
COPY index.html index.html

index.html

Hello world!

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: hello
spec:
  type: LoadBalancer
  selector:
    app: hello
  ports:
  - port: 80
    targetPort: 80