Once you register your plug-in package extension, the plug-in is downloaded and deployed on vSphere Client. You can verify that the deployment procedure is successful by using the log files of the Tomcat server, which are available at /var/log/vmware/vsphere-ui.
You can verify that your plug-in package is deployed correctly by searching the log file of the vSphere Client application server for your plug-in package ID. If the package is deployed correctly, the plug-in package ID is included in a message about a successful package deployment.
On startup, the vSphere Client caches the downloaded plug-in package in /etc/vmware/vsphere-ui/vc-packages/vsphere-client-serenity/* .
Note: If you want to update the content of a plug-in package, you must register the plug-in with a new version or remove the plug-in package from the cache.