Sounds like you need something that isolates the "Jenkins Slave" functionality from your build environment. I see these solutions:

A new machine with the Jenkins Slave that does SSH to your CentOS 5 build environment in the build step.

Put your CentOS 5 build environment in a Docker container and use one of these plugins:

* Docker Slaves: This plugin is marked as experimental and has not seen any updates this year. It works with some kinks. E.g. There is no limit on how many nodes it can start at once when using pipeline. This dynamically provisions a full slave for each build.

* Cloudbees Docker Custom Build Environment plugin. This plugin has not seen any updates for a couple of years, but a new maintainer is getting started now. This plugin attaches on an existing slave and uses the Jenkins Slave mechanisms for scheduling. It lacks pipeline support and does not work if the slave itself is running as a Docker container.

/Jacob


On 2017-06-24 07:27, Conrad T. Pino wrote:

  * A secure Java 8 JRE is unavailable on CentOS 5.
      o Oracle JRE free support ended long ago.
      o OpenJDK 8 binary packages unavailable.
      o Fedora EPEL latest is OpenJDK 1.7.0_131
  * Can Jenkins 2.60.1 work with Java 7 JRE slaves?

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