Presentation on automated builds and deployments in OpenShift and the relationship between OpenShift and Kubernetes.

1. Automated Image Builds
in OpenShift and
Kubernetes
Graham Dumpleton - Red Hat
@GrahamDumpleton

2. OpenShift Stack

3. Access and Control

4. Namespace

5. Pods

6. Persistent Volumes

7. Networking

8. Deployments

9. Builds

10. Docker Build

11. apiVersion: v1
kind: BuildConfig
metadata:
name: myimage
spec:
strategy:
type: Docker
dockerStrategy:
from:
kind: ImageStreamTag
name: centos:7
source:
type: Git
git:
uri: https://github.com/demo/myimage.git
output:
to:
kind: ImageStreamTag
name: myimage:latest
BuildConfig (Docker Strategy)

12. apiVersion: v1
kind: ImageStream
metadata:
name: centos
spec:
tags:
- from:
kind: DockerImage
name: centos:7
name: 7
apiVersion: v1
kind: ImageStream
metadata:
name: myimage
ImageStream(s)

13. Loading the Resources
oc create -f myimage-build-configuration.yaml

14. Short Cut for Creating Docker Build
oc new-build https://github.com/demo/myimage.git

15. Manually Trigger a Rebuild
oc start-build myimage

16. apiVersion: v1
kind: BuildConfig
metadata:
name: myimage
spec:
strategy:
type: Docker
…
source:
type: Git
git:
uri: https://github.com/demo/myimage.git
triggers:
- type: ConfigChange
- type: ImageChange
- type: GitHub
github:
secret: kkDMDki2O40wtqDd_cxA
Build Triggers

17. Build ConfigChange Trigger
oc set env bc/myimage --env DEBUG=1

18. ImageChange Trigger
oc import-image centos:7

19. GitHub Trigger

20. Deployment

21. apiVersion: v1
kind: DeploymentConfig
metadata:
name: myimage
spec:
replicas: 1
selector:
app: myimage
template:
metadata:
labels:
app: myimage
spec:
containers:
- image: 172.30.240.125:5000/demo/myimage:latest
name: myimage
ports:
- containerPort: 8080
protocol: TCP
Deployment Configuration

22. apiVersion: v1
kind: Service
metadata:
name: myimage
spec:
ports:
- name: 8080-tcp
port: 8080
protocol: TCP
targetPort: 8080
selector:
app: myimage
Service

23. Short Cut for Deploy
oc new-app myimage

24. Short Cut for Build/Deploy
oc new-app https://github.com/demo/myimage.git

25. apiVersion: v1
kind: DeploymentConfig
metadata:
name: myimage
spec:
…
triggers:
- type: ConfigChange
- type: ImageChange
imageChangeParams:
containerNames:
- myimage
from:
kind: ImageStreamTag
name: myimage:latest
namespace: demo
Deployment Triggers

26. Deployment ConfigChange Trigger
oc set env dc/myimage --env DEBUG=1

27. apiVersion: v1
kind: Route
metadata:
name: myimage
spec:
host: ""
port:
targetPort: 8080-tcp
to:
name: myimage
Route

28. Short Cut for Exposing Service
oc expose svc/myimage

29. Source Build

30. apiVersion: v1
kind: BuildConfig
metadata:
name: myapp
spec:
strategy:
type: Source
sourceStrategy:
from:
kind: ImageStreamTag
namespace: openshift
name: python:2.7
source:
type: Git
git:
uri: https://github.com/demo/myapp.git
output:
to:
kind: ImageStreamTag
name: myapp:latest
BuildConfig (Source Strategy)

31. apiVersion: v1
kind: ImageStream
metadata:
name: python
namespace: openshift
spec:
tags:
- from:
kind: DockerImage
name: centos/python-27-centos7:latest
name: "2.7"
Builder ImageStream

32. Short Cut for Source Build/Deploy
oc new-app python:2.7~https://github.com/demo/myapp.git

33. S2I Execution Steps

34. S2I Application Image
cat /tmp/files.tar | docker run -i --name mybuild
centos/python-27-centos7:latest
bash -c "tar -C /tmp -xf - &&
/usr/libexec/s2i/bin/assemble"
docker commit mybuild myapp:latest

35. Assemble Script
#!/bin/bash
WARPDRIVE_APP_ROOT=/opt/app-root
WARPDRIVE_SRC_ROOT=$WARPDRIVE_APP_ROOT/src
cp -Rf /tmp/src/. $WARPDRIVE_SRC_ROOT
rm -rf /tmp/src
warpdrive build
chmod -Rf g+w $WARPDRIVE_SRC_ROOT || true

36. Running Image
docker run -p 8080:8080 myapp

37. Run Script
#!/bin/bash
exec warpdrive start

38. Using S2I Outside of OpenShift
s2i build https://github.com/demo/myapp.git
centos/python-27-centos7:latest myapp
docker run -p 8080:8080 myapp

39. Source to Image Project
• https://github.com/openshift/source-to-image

40. Demo/Questions

41. OpenShift Resources
• OpenShift Origin
https://www.openshift.org
• OpenShift Enterprise/Dedicated
https://www.openshift.com
• OpenShift Commons
http://commons.openshift.org

42. Try OpenShift
• OpenShift TestDrive Lab on Amazon Web Services
https://www.openshift.com/dedicated/test-drive.html
• All-In-One Vagrant VM box
https://www.openshift.org/vm/
• Free Red Hat Container Development Kit (CDK)
http://developers.redhat.com/products/cdk/overview/