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Automated Image Builds in OpenShift and Kubernetes
The document provides detailed instructions on automating image builds in OpenShift and Kubernetes using various strategies including Docker and Source-to-Image (S2I). It outlines the configuration of build and deployment resources, shortcuts for creating applications, and methods for triggering builds and deployments. Additionally, it offers links to OpenShift resources and tools for testing and development.
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Automated Image Builds in OpenShift and Kubernetes
- 1. Automated Image Builds inOpenShift and Kubernetes Graham Dumpleton - Red Hat @GrahamDumpleton
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- 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 occreate -f myimage-build-configuration.yaml
- 14. Short Cut forCreating Docker Build oc new-build https://github.com/demo/myimage.git
- 15. Manually Trigger aRebuild 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 ocset env bc/myimage --env DEBUG=1
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- 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 forDeploy oc new-app myimage
- 24. Short Cut forBuild/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 ocset 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 forExposing Service oc expose svc/myimage
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- 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 forSource Build/Deploy oc new-app python:2.7~https://github.com/demo/myapp.git
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- 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
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- 38. Using S2I Outsideof OpenShift s2i build https://github.com/demo/myapp.git centos/python-27-centos7:latest myapp docker run -p 8080:8080 myapp
- 39. Source to ImageProject • https://github.com/openshift/source-to-image
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- 41. OpenShift Resources • OpenShiftOrigin https://www.openshift.org • OpenShift Enterprise/Dedicated https://www.openshift.com • OpenShift Commons http://commons.openshift.org
- 42. Try OpenShift • OpenShiftTestDrive 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/