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Once a plugin file has been uploaded, the Jenkins master must be manually restarted in order for the changes to take effect. 

## On the master 

Assuming a .hpi  file has been explicitly downloaded by a systems administrator, the administrator can manually place the .hpi  file in a specific location on the file system. 

Copy the downloaded .hpi`  file into the JENKINS_HOME/plugins  directory on the Jenkins master (for example, on Debian systems JENKINS_HOME  is generally /var/lib/jenkins ). 

The master will need to be restarted before the plugin is loaded and made available in the Jenkins environment. 

## NOTE 

The names of the plugin directories in the Update Site [27: updates.jenkins.io] are not always the same as the plugin’s display name. Searching plugins.jenkins.io for the desired plugin will provide the appropriate link to the .hpi  files. 

