https://www.youtube.com/watch?v=3L4_xNw_ZE8&index=2&list=PLpPdQMJWIciFukX3rh8YOXxewyqX_4wkJ

1. commit => #GitHub =>
#CircleCI => #Docker =>
#Kubernetes #AWS cluster
6. sraz přátel Symfony v Praze
31.3.2016

2. continuous integration
… deployment
… delivery

3. Kouzelná Almara
1 Java aplikace v Tomcatu
(RESTful API + Wicket UI)

4. Tomcat…?
hot deploy 🤘
PermGen 💩

5. fuck it!
🐙
#BitBucket => #Bamboo => SSH upload
WARka => jetty-runner.jar + automatický reload
po uploadu nového WARu (Node.JS skript)

6. Skrz
3 frontend PHP(-FPM) aplikace,
2 3 ReactPHP aplikace, ~30 RabbitMQ consumers,
1 Go aplikace

7. SVN 👹

8. fuck it!
🐙
#BitBucket => BB hook => checkout git do
~/commits/<commit> => hook.sh =>
(na stagingu automaticky) swap.sh

9. hitserver, adserver, ranking, RabbitMQ
consumers
supervisord 🤘
porty 💩

10. hitserver, adserver, ranking, RabbitMQ
consumers
supervisord 💩
porty 💩

11. Liftago
7 Java aplikací, 2 Node.JS aplikace,
Python skripty v crontabu

12. 💩 Jelastic 💩
💩 Dogado 💩

13. fuck! fuck fuck!
🐙

14. ❓ Java/PHP/Go/Node/…
❓ Java 7 vs. 8, PHP 5.3 vs. 7.0, …
❓ supervisor/autorestart
❓ rolling deployment
❓ porty
❓ nezávislé na hostingu

15. ❓ Java/PHP/Go/Node/… ✅ Docker
❓ Java 7 vs. 8, PHP 5.3 vs. 7.0, … ✅ Docker
❓ supervisor/autorestart ✅ Kubernetes
❓ rolling deployment ✅ Kubernetes
❓ porty ✅ Kubernetes
❓ nezávislé na providerovi ✅ Kubernetes

16. Kubernetes

20. Pods
Docker container
billing:2016-03-31.345
Label
app=billing
Label
env=prod
Docker container
logrotate:latest
Volume
/var/lib/invoices
Volume
/var/log
10.0.0.34
8080

21. Reconciliation loop
Observed state Desired state

22. Reconciliation loop
Observed state Desired statecreate

23. Reconciliation loop
Observed state Desired statescale

24. Reconciliation loop
Observed state Desired statehealth check

25. Replication controller
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
replicas=3
app=billing
env=prod
Pod
billing 10.0.0.35
app=billing
env=prod
Pod
billing 10.0.0.36
app=billing
env=prod

26. Replication controller
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
replicas=1
app=billing
env=prod

27. Service
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
Pod
billing 10.0.0.35
app=billing
env=prod
Pod
api 10.0.0.14
app=api
env=prod
??? ???

28. Service
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
Pod
api 10.0.0.14
app=api
env=prod
??? !!!

29. Service
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
Pod
billing 10.0.0.35
app=billing
env=prod
Pod
api 10.0.0.14
app=api
env=prod
Service
billing-prod 10.1.0.1

30. Service
Pod
billing 10.0.0.34
Replication
controller
billing-prod
app=billing
env=prod
Pod
api 10.0.0.14
app=api
env=prod
Service
billing-prod 10.1.0.1

31. Service
Replication
controller
billing-prod
Pod
billing 10.0.0.66
app=billing
env=prod
Pod
api 10.0.0.14
app=api
env=prod
Service
billing-prod 10.1.0.1

32. …a více
• Job (cron scheduler plánovaný na 1.3)
• DaemonSet
• Horizontal Pod Autoscaler
• Secret
• Ingress

34. $ kubectl create -f - <<EOF
> apiVersion: v1
> kind: ReplicationController
> metadata:
> name: billing-prod
> spec:
> replicas: 3
> template:
> metadata:
> labels:
> app: billing
> env: prod
> spec:
> containers:
> - name: billing
> image: docker-registry.liftago.com/billing:latest
> imagePullPolicy: Always
…

35. …
> env:
> - name: SPRING_PROFILES_ACTIVE
> value: prod
> ports:
> - containerPort: 8080
> livenessProbe:
> httpGet:
> path: /health
> port: 8080
> initialDelaySeconds: 60
> timeoutSeconds: 5
> readinessProbe:
> httpGet:
> path: /health
> port: 8080
> initialDelaySeconds: 1
> timeoutSeconds: 1
> imagePullSecrets:
> - name: docker-repository.liftago.com
> EOF

36. $ kubectl create -f <<EOF
> apiVersion: v1
> kind: Service
> metadata:
> name: billing-prod
> labels:
> app: billing
> env: prod
> spec:
> clusterIP: 10.1.0.1
> ports:
> - port: 80
> targetPort: 8080
> protocol: TCP
> selector:
> app: billing
> env: prod
> EOF

37. $ kubectl get po -l app=billing,env=prod
NAME READY STATUS RESTARTS AGE
billing-prod-e3jcm 1/1 Running 0 1m
billing-prod-4sdfb 1/1 Running 0 1m
billing-prod-sd134 1/1 Running 0 1m
$ kubectl get rc -l app=billing,env=prod
NAME DESIRED CURRENT AGE
billing-prod 3 3 1m
$ kubectl get svc -l app=billing,env=prod
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
billing-prod 10.1.0.1 <none> 80/TCP 1m

38. $ kubectl exec -it billing-prod-e3jcm bash
$ cat /etc/hosts
127.0.0.1 billing-prod-e3jcm
…

39. kubernetes.io
github.com/jakubkulhan/kube-jessie-ansible
github.com/jakubkulhan/dockerfiles

40. A co ty
commity/#GitHub/#CircleCI?
🤔

41. machine:
java:
version: oraclejdk8
environment:
DOCKER_TAG: $(date +%Y-%m-%d).$CIRCLE_BUILD_NUM
services:
- docker
post:
- docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS $DOCKER_REGISTRY
dependencies:
post:
- sudo wget 'http://storage.googleapis.com/kubernetes-release/release/v1.2.0/bin/linux/amd64/kubectl' -O /usr/local/bin/kubectl
- sudo chmod 755 /usr/local/bin/kubectl
# docker pull suggested by https://discuss.circleci.com/t/caching-docker-image-with-docker-hub/1784
- docker pull $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:latest || true
test:
…
deployment:
kubernetes:
branch: master
commands:
- docker build -t $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:$DOCKER_TAG .
- docker push $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:$DOCKER_TAG
- docker tag -f $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:$DOCKER_TAG $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:latest
- docker push $DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:latest
- >
kubectl config set-cluster kubernetes --server=$KUBERNETES_MASTER &&
kubectl config set-credentials circleci --token=$KUBERNETES_TOKEN &&
kubectl config set-context kubernetes --cluster=kubernetes --user=circleci &&
kubectl config use-context kubernetes
- kubectl rolling-update billing-prod --image=$DOCKER_REGISTRY/$CIRCLE_PROJECT_REPONAME:$DOCKER_TAG --update-period=10s

42. Díky!
Otázky?
twitter.com/jakubkulhan
medium.com/@jakubkulhan
github.com/jakubkulhan