We have been using successfully Jenkins for a long time, but our Jenkins environment was very outdated. The master and its slaves were still running on JDK1.6 with Jenkins version 1.456. So it was “very” old. Even the installation of new plugins was impossible because these were usually based on Java7. Overall we have 20 Jenkins slaves for 27 projects and 200 jobs. The projects are in several states: just started, ongoing, release or maintanence. The normal project work should not be disturbed by this upgrade.
Therefore we decided not to update the existing installation but to use a completely new Jenkins and update the JDK too.
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