DockerGrunn 10 intro talk
- 1. Docker Grunn #10 Deep Blue Sea February 27, 2019
- 2. • 19:30 Welcome + Docker intro • 19:45 Peter Jaap - Kubernetes @ Elgentos • 20:15 Joshua - Kubernetes @ Verifai • 20:45 Arthur - Persistence & ELK stack • 21:15 Container-borrel Programme
- 3. Organization Tijmen Klein @timmipetit Henk Bokhoven @BOK Joshua Peper @joshuapeper
- 4. Sponsor
- 5. Future meetups Got an interesting topic or a nice location for the next Meetup? Please let us know!
- 7. Intro: Wut?
- 8. Services in portable containers: ★ Web server ★ Database server ★ Workers ★ Compilers ★ Tests ★ Browsers What to run?
- 9. ★ Linux (native) ★ Mac (via xhyve hypervisor) ★ Windows (via Hyper-V) Where?
- 10. Images !== Containers && Containers !== Images
- 11. Image: immutable like a CD-ROM or class Container: instance like memory boot volume or object
- 12. ★ Docker Hub: collection of images ★ Find something nice ★ Run the container: $ docker run docker/whalesay cowsay boo How?
- 13. $ docker run docker/whalesay cowsay boo Unable to find image 'docker/whalesay:latest' locally latest: Pulling from docker/whalesay e9e06b06e14c: Pull complete a82efea989f9: Pull complete 37bea4ee0c81: Pull complete 07f8e8c5e660: Pull complete 676c4a1897e6: Pull complete 5b74edbcaa5b: Pull complete 1722f41ddcb5: Pull complete 99da72cfe067: Pull complete 5d5bd9951e26: Pull complete fb434121fc77: Already exists Digest: sha256:d6ee73f Status: Downloaded newer image for docker/whalesay:latest _____ < boo > ----- ## . ## ## ## == ## ## ## ## === /""""""""""""""""___/ === ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~ ______ o __/ __/ __________/
- 14. $ docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker/whalesay latest fb434121fc77 3 hours ago 247 MB Images
- 15. FROM docker/whalesay:latest RUN apt-get -y update && apt-get install -y fortunes CMD /usr/games/fortune -a | cowsay Dockerfile: $ docker build -t fortune-whale . Sending build context to Docker daemon 2.048 kB ...snip... Removing intermediate container cb53c9d09f3b Successfully built c2c3152907b5 Start the build: Build your own
- 16. $ docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker/whalesay latest fb434121fc77 3 hours ago 247 MB fortune-whale latest c2c3152907b5 4 minutes ago 275 MB $ docker run fortune-whale ______________________________________ < You will be successful in your work. > -------------------------------------- ## . ## ## ## == ## ## ## ## === /""""""""""""""""___/ === ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~ ______ o __/ __/ __________/ Build your own And start a container:
- 17. I want to run containers in production!
- 18. ★ System for managing containerized applications ★ Easy deploying & scaling ★ Declarative configuration ★ Shitload of features Kubernetes (k8s)
- 19. ★ Pod: basic unit, runs 1 (or more) containers ★ Replication set: scale identical replicas of pods ★ Deployments: creates replication sets, responsible for rolling updates, rollbacks ★ Service: abstraction for internal access to a set of pods ★ Ingress: manages external access to service Basic concepts
- 20. apiVersion: apps/v1 kind: Deployment metadata: name: hello spec: selector: matchLabels: app: hello replicas: 1 template: metadata: labels: app: hello spec: containers: - name: hello image: gcr.io/google-samples/hello-app:1.0 ports: - containerPort: 8080 k8s hello world deployment.yaml
- 21. apiVersion: v1 kind: Service metadata: name: hello spec: ports: - port: 8080 selector: app: hello Service & ingress service.yaml apiVersion: extensions/v1beta1 kind: Ingress metadata: name: hello spec: rules: - host: 'hello.local' http: paths: - backend: serviceName: hello servicePort: 8080 ingress.yaml
- 22. $ kubectl apply -f deployment.yaml -f service.yaml -f ingress.yaml deployment.apps/hello created service/hello created ingress.extensions/hello created $ kubectl get pods —output=wide NAME READY STATUS RESTARTS AGE IP NODE hello-867c96c46b-7lp4d 1/1 Running 0 2s 172.17.0.7 minikube $ kubectl scale deployment hello --replicas=2 deployment.extensions/hello scaled $ kubectl get pods —output=wide NAME READY STATUS RESTARTS AGE IP NODE hello-867c96c46b-xsntq 1/1 Running 0 11s 172.17.0.8 minikube hello-867c96c46b-7lp4d 1/1 Running 0 1m 172.17.0.7 minikube Apply
- 25. ★ Jobs & Cronjobs ★ Stateful Sets ★ Persistent Volumes ★ Rolling updates & rollbacks ★ CPU/memory limitations ★ Liveness & readiness probes ★ Horizontal autoscaling ★ Configmaps & Secrets ★ Namespaces ★ etc etc There’s more!
- 26. Thank u, next