Recognize OpenStack too (it also has a metadata service).

Typical values for machdep.dmi are:

machdep.dmi.system-vendor = OpenStack Foundation
machdep.dmi.system-product = OpenStack Nova
machdep.dmi.system-version = 17.0.12
machdep.dmi.system-serial = c46130fb-a56e-43f2-9d98-492d24656b9c
machdep.dmi.system-uuid = 680b8119-0d74-4f78-a6fd-e79dfede905c
machdep.dmi.bios-vendor = SeaBIOS
machdep.dmi.bios-version = 1.10.2-1ubuntu1
machdep.dmi.bios-date = 20140401
machdep.dmi.chassis-vendor = QEMU
machdep.dmi.chassis-type = QEMU
machdep.dmi.chassis-version = pc-i440fx-2.8
machdep.dmi.processor-vendor = QEMU
machdep.dmi.processor-version = pc-i440fx-2.8
machdep.dmi.processor-frequency = 2000 MHz


(rhialto)

@@ -1,4 +1,4 @@
-# $NetBSD: ec2_init,v 1.2 2020/09/09 13:25:48 jmcneill Exp $
+# $NetBSD: ec2_init,v 1.3 2021/07/15 17:20:25 rhialto Exp $
 
 is_ec2() {
 	val=NO
@@ -11,6 +11,10 @@
 			nodeval="$(/sbin/sysctl -n $node | tr '[A-Z]' '[a-z]')"
 			case "$nodeval" in
 			*amazon*)
+				val=YES
+				;;
+			# OpenStack is not EC2 but it does have a metadata service.
+			*openstack*)
 				val=YES
 				;;
 			esac