Jenkins is a tool for continuous integration, often used by software development companies to provide automated workflows for building and deploying software. Usual use-case scenarios of Redmine plus Jenkins would mean that you can track Jenkins, build statuses from Redmine, and more advanced integration makes Jenkins able to create issues in Redmine automatically if a build fails.
A Jenkins server with active and configured jobs is required.
Redmine server administrator access and Redmine administrator account is required.
Once you have made sure that your Jenkins server and job that is related to your Redmine project is properly configured, proceed with the Redmine Jenkins plugin installation: ...