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  1. OpenShift Jenkins
  2. JKNS-257

Use sidecar pattern for Jenkins pod templates

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      In OpenShift Container Platform 4.10, the non-sidecar maven and nodejs pod templates for Jenkins are deprecated. These pod templates are planned for removal in a future release. Bug fixes and support are provided through the end of that future life cycle, after which no new feature enhancements are made. Instead, with this update, you can run Jenkins agents as sidecar containers. (JKNS-257)

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      In OpenShift Container Platform 4.10, the non-sidecar maven and nodejs pod templates for Jenkins are deprecated. These pod templates are planned for removal in a future release. Bug fixes and support are provided through the end of that future life cycle, after which no new feature enhancements are made. Instead, with this update, you can run Jenkins agents as sidecar containers. ( JKNS-257 )
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    • Sprint 211, Sprint 212, Sprint 213

    Description

      User Story

      As a developer using Jenkins to build my application
      I want to use the base Jenkins agent image as a sidecar in my PodTemplate
      So that I can use any s2i builder image in my Jenkins pipelines

      Acceptance Criteria

      • Provide new Kubernetes Plugin Pod Templates which uses the sidecar pattern for NodeJS and Maven.
      • Add documentation on how to use the new pod template in a Jenkinsfile (need to specify the container where the build occurs).
      • Add documentation on how developers can provide an inline pod template within a Jenkinsfile. Documentation should have the following formats:
        • New YAML declarative format
        • Deprecated Groovy format
      • Existing pipelines that use the default Kubernetes Plugin Pod Templates do not break.
      • End to end testing (for client or sync plugin) verifies that the new pod templates work.

      QE Impact

      QE will need to verify that the new pod templates can successfully execute a JenkinsPipeline build.

      Docs Impact

      Documentation needs to be updated to explain how to use the new template.

      PX Impact

      Unclear if we need new CEE/PX materials beyond doc updates.

      Notes

      We currently have built-in pod templates for NodeJS and Maven, which use specialized agent images with NodeJS/Maven image.
      Blog post here outlines the process: https://developers.redhat.com/blog/2020/06/04/an-easier-way-to-create-custom-jenkins-containers/

      The Groovy style of declaring in-line pod templates is deprecated in favor of a YAML-style format.

      Existing documentation for the Jenkin pod templates: https://docs.openshift.com/container-platform/4.9/openshift_images/using_images/images-other-jenkins.html#images-other-jenkins-config-kubernetes_images-other-jenkins

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            gmontero@redhat.com Gabe Montero
            adkaplan@redhat.com Adam Kaplan
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