regenerating root key and removing public key before creating the AMI

centos-i386.json

@@ -89,6 +89,12 @@
 			"type": "shell",
 			"only": ["virtualbox-iso", "vmware-iso"]
 		},
+		{
+			"script": "provisioners/amazon-ebs-32bit.sh",
+			"type": "shell",
+			"execute_command": "chmod +x {{ .Path }}; {{ .Vars }} {{ .Path }}",
+			"only": ["amazon-ebs"]
+		},
 		{
 			"script": "provisioners/cloud.sh",
 			"type": "shell",

provisioners/amazon-ebs-32bit.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+#----------------------------------------------
+# amazon AMI instance is built from 
+# http://www.nixknight.com/2014/04/build-ebs-backed-centos-ec2-ami-from-scratch/
+# 
+# we want rc.local to reexecute everything
+echo "Cleanup -- making sure password gets regenerated"
+touch /root/firstrun
+echo "Cleanup -- removing authorized_keys for root"
+rm -rf /root/.ssh/authorized_keys