Installing a plugin From the web UI CAUTION Jenkins provides a couple of different methods for installing plugins on the master: Each approach will result in the plugin being loaded by Jenkins but may require different levels of access and trade-offs in order to use. The two approaches require that the Jenkins master be able to download meta-data from an Update Center, whether the primary Update Center operated by the Jenkins project [27: updates.jenkins.io], or a custom Update Center. The plugins are packaged as self-contained  .hpi  files, which have all the necessary code, images, and other resources which the plugin needs to operate successfully. The simplest and most common way of installing plugins is through the  Manage Jenkins  >  Manage Plugins  view, available to administrators of a Jenkins environment. Under the  Available  tab, plugins available for download from the configured Update Center can be searched and considered: Most plugins can be installed and used immediately by checking the box adjacent to the plugin and clicking  Install without restart . If the list of available plugins is empty, the master might be incorrectly configured or has not yet downloaded plugin meta-data from the Update Center. Clicking the  Check now  button will force Jenkins to attempt to contact its configured Update Center. 160 1. Using the "Plugin Manager" in the web UI. 2. Using the Jenkins CLI  install-plugin  command.