This document contains the agenda for a Docker Meetup event. It lists the scheduled talks and their topics, which include introductions to Docker, Kubernetes, and using containers with an ELK stack. It also provides logistical details like the date, location, and organizers of the meetup. Finally, it includes introductory information about Docker concepts like images, containers, and running a simple "whalesay" demo container.

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!

6. Friday, 10 may
2019

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