# cat /etc/cloud/ds-identify.cfg 
search,found=first,maybe=none,notfound=disabled


[up 308.30s] ds-identify
policy loaded: mode=search report=false found=all maybe=all notfound=enabled
/etc/cloud/cloud.cfg.d/90_dpkg.cfg set datasource_list: [ NoCloud, ConfigDrive, OpenNebula, DigitalOcean, Azure, AltCloud, OVF, MAAS, GCE, OpenStack, CloudSigma, SmartOS, Bigstep, Ec2, CloudStack, None ]
DMI_PRODUCT_NAME=Standard PC (i440FX + PIIX, 1996)
DMI_SYS_VENDOR=QEMU
DMI_PRODUCT_SERIAL=
DMI_PRODUCT_UUID=unavailable
PID_1_PLATFORM=unavailable
FS_LABELS=system-boot,writable
KERNEL_CMDLINE=BOOT_IMAGE=(loop)/kernel.img root=LABEL=writable snap_core=core_x1.snap snap_kernel=pc-kernel_x1.snap ro net.ifnames=0 init=/lib/systemd/systemd console=tty1 console=ttyS0 panic=-1
VIRT=qemu
UNAME_KERNEL_NAME=Linux
UNAME_KERNEL_RELEASE=4.4.0-59-generic
UNAME_KERNEL_VERSION=#80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017
UNAME_MACHINE=x86_64
UNAME_NODENAME=localhost
UNAME_OPERATING_SYSTEM=GNU/Linux
DSNAME=
DSLIST=NoCloud ConfigDrive OpenNebula DigitalOcean Azure AltCloud OVF MAAS GCE OpenStack CloudSigma SmartOS Bigstep Ec2 CloudStack None
MODE=search
ON_FOUND=all
ON_MAYBE=all
ON_NOTFOUND=enabled
pid=2348 ppid=2165
is_container=false
check for 'OVF' returned maybe
ec2 platform is 'Unknown'.
1 datasources returned maybe: OVF
[up 308.36s] returning 0