Step-by-Step Guide to Deploy Java Applications to Redhat Openshift(Kubernetes)
1. Register for a RedHat Developer Sandbox
https://developers.redhat.com/developer-sandbox
2. Login to your RedHat Developer Sandbox
https://developers.redhat.com/developer-sandbox/get-started
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3. Install "oc" command line utility (RedHat's version of kubectl)
Instructions are here
4. Test "oc" command line utility
oc status
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5. Copy the "oc login" command from the UI and run it on the console
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6. Clone The Simple Java Application from GitHub
git clone git@github.com:dalgado-aws/first-openshift-java.git
7. Change into Application Directory
cd first-openshift-java
8. Create an "Image Stream" to refer to your Images
oc create is my-java-image-stream
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9. Create a "Build Config" to convert your Java Source Code to an Image
oc apply -f manifests/oc_1_bc.yaml
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10. Start the Build to create an Image
oc start-build build-my-java --from-dir=. --follow
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11. Deploy the Image
export OPENSHIFT_NAMESPACE=$(oc config view --minify -o 'jsonpath={..namespace}')
oc process -f manifests/oc_2_dc.yaml -p OPENSHIFT_NAMESPACE=$OPENSHIFT_NAMESPACE |oc create -f -
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12. Create the Service to access the application from within Openshift
oc apply -f manifests/oc_3_service.yaml
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13. Create the Route to access the application from the Internet
oc process -f manifests/oc_4_route.yaml -p OPENSHIFT_NAMESPACE=$OPENSHIFT_NAMESPACE |oc create -f -
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14. Access the Application
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