Containerizing Middleware Applications -...
Transcript of Containerizing Middleware Applications -...
![Page 1: Containerizing Middleware Applications - sysws.org.uksysws.org.uk/workshop/2018/43-dowland-middleware.pdf · Cekit • Dockerfile pre-processor image.yaml → cekit ⇒ Dockerfile,](https://reader035.fdocuments.net/reader035/viewer/2022081515/5aba28c87f8b9aa6018eb31c/html5/thumbnails/1.jpg)
Containerizing Middleware [email protected]
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Definitions & Technologies
• Container • Docker• Middleware• Orchestration • Kubernetes • OpenShift
![Page 3: Containerizing Middleware Applications - sysws.org.uksysws.org.uk/workshop/2018/43-dowland-middleware.pdf · Cekit • Dockerfile pre-processor image.yaml → cekit ⇒ Dockerfile,](https://reader035.fdocuments.net/reader035/viewer/2022081515/5aba28c87f8b9aa6018eb31c/html5/thumbnails/3.jpg)
First Steps: Inheritance heirarchy
RHEL ↳ base ↳ base JDK ↳ standalone ↳ OpenShift
![Page 4: Containerizing Middleware Applications - sysws.org.uksysws.org.uk/workshop/2018/43-dowland-middleware.pdf · Cekit • Dockerfile pre-processor image.yaml → cekit ⇒ Dockerfile,](https://reader035.fdocuments.net/reader035/viewer/2022081515/5aba28c87f8b9aa6018eb31c/html5/thumbnails/4.jpg)
Dockerfile example
FROM jboss-base-7/jdk8:1.2 ENV JBOSS_IMAGE_VERSION=1.2 … ADD some-script.sh /tmp USER 0 RUN chmod +x /tmp/some-script.sh \ && /tmp/some-script.sh \ && rm /tmp/some-script.sh \ USER jboss …
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OpenShift Integration
• turning features off• integrating features• runtime configuration
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Sharing scripts via inheritance
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Artefacts and private URIs
ADD http://private.url/jboss-eap-7.0.0.GA.zip…
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Cekit
• Dockerfile pre-processor
image.yaml → cekit ⇒ Dockerfile, artefacts, shared scripts
https://github.com/cekit/cekit
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Cekit YAML example
name: "jboss-eap-7/eap71-openshiftdescription: "Red Hat JBoss Enterpversion: "1.2"from: "jboss-eap-7/eap71:latest"labels: - name: "com.redhat.component" value: "jboss-eap-7-eap71-op - name: "io.k8s.description" value: "Platform for buildin
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Alternatives
• Ansible Container
https://docs.ansible.com/ansible-container/
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