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+Data souce AltCloud will be used to pick up user data on
+RHEVm and vSphere.
+
+RHEVm:
+======
+For REHVm v3.0 the userdata is injected into the VM using floppy
+injection via the RHEVm dashboard "Custom Properties". The format
+of the Custom Properties entry must be:
+"floppyinject=user-data.txt:<base64 encoded data>"
+
+e.g.: To pass a simple bash script
+
+% cat simple_script.bash
+#!/bin/bash
+echo "Hello Joe!" >> /tmp/JJV_Joe_out.txt
+
+% base64 < simple_script.bash
+IyEvYmluL2Jhc2gKZWNobyAiSGVsbG8gSm9lISIgPj4gL3RtcC9KSlZfSm9lX291dC50eHQK
+
+To pass this example script to cloud-init running in a RHEVm v3.0 VM
+set the "Custom Properties" when creating the RHEMv v3.0 VM to:
+floppyinject=user-data.txt:IyEvYmluL2Jhc2gKZWNobyAiSGVsbG8gSm9lISIgPj4gL3RtcC9KSlZfSm9lX291dC50eHQK
+
+NOTE: The prefix with file name must be: "floppyinject=user-data.txt:"
+
+It is also possible to launch a RHEVm v3.0 VM and pass optional user
+data to it using the Delta Cloud.
+For more inforation on Delta Cloud see: http://deltacloud.apache.org
+
+vSphere:
+========
+For VMWare's vSphere the userdata is injected into the VM an ISO
+via the cdrom. This can be done using the vSphere dashboard 
+by connecting an ISO image to the CD/DVD drive.
+
+To pass this example script to cloud-init running in a vSphere VM
+set the CD/DVD drive when creating the vSphere VM to point to an
+ISO on the data store.
+
+The ISO must contain the user data:
+
+For example, to pass the same simple_script.bash to vSphere:
+
+Create the ISO:
+===============
+% mkdir my-iso
+
+NOTE: The file name on the ISO must be: "user-data.txt"
+% cp simple_scirpt.bash my-iso/user-data.txt
+
+% genisoimage -o user-data.iso -r my-iso
+
+Verify the ISO:
+===============
+% sudo mkdir /media/vsphere_iso
+% sudo mount -o loop JoeV_CI_02.iso /media/vsphere_iso
+% cat /media/vsphere_iso/user-data.txt
+% sudo umount /media/vsphere_iso
+
+Then, launch the vSphere VM the ISO user-data.iso attached as a CDrom.
+
+It is also possible to launch a vSphere VM and pass optional user
+data to it using the Delta Cloud.
+
+For more inforation on Delta Cloud see: http://deltacloud.apache.org