VM compatibility with UKCloud for Oracle Software
This article outlines what you need to do to make sure your Oracle VMs (OVMs) are compatible with UKCloud for Oracle Software service. You may find this useful if you're moving VMs from UKCloud for VMware to UKCloud for Oracle Software.
OVF and VMDK
OVF and VMDK files are not compatible with Oracle Enterprise Manager (OEM), the management plane that's used to deploy and manage your UKCloud for Oracle Software environment. To make sure your VMs are compatible with UKCloud for Oracle Software you may need to transform your VMs.
OVA files (Assembly option) and
tar.gz/tgz (Template option) are the only accepted file formats.
If you select the Assembly option on the upload page, then the uploader will expect an OVA Assembly package file (
ova file). Your
.ova file should contain the following files (in the exact order listed):
.ovf- the OVF descriptor file, which contains all VM specs metadata and links to the embedded virtual disk image file (with a
.mf- contains metadata that is used for integrity and authenticity checks; this data must be correct for the
.ovafile to be accepted in most cases
.vmdk- the embedded virtual disk image file
As the exported
.ova file also contains file hashes that are unique to the files included in the package, simply creating a
tar file with these contents will not work in most cases. For most virtualisation platforms, it's best to use the export functionality from the source virtualisation platform to generate the
One way of converting your VMs to an
.ova file would be to use the OVF Tool, for example:
ovftool "original.ovf" "original.ova"
Make sure you include the quotation marks (
You can download the OVF Tool from:
If you select the Template option on the upload page, then the uploader will expect an Oracle VM Template file (either a
.tar.gz file). This gzipped tarball file normally contains the following files (in the exact order listed):
.cfg- contains the VM specs metadata and links to the embedded RAW disk image file, normally named
system.img- the embedded RAW disk image file, either exported from another XEN platform or converted from other virtual disk formats
For any uploads larger than 500 MB, you'll need to allow sufficient time for the upload to complete before clicking the Upload button or it will fail and the item will not appear in your software library. There is currently no upload progress indicator on OEM. Oracle is aware of this but are treating it as an enhancement request therefore there's currently no indication of when the upload progress indicator will be added on future releases of the platform software.
If you have any comments on this document or any other aspect of your UKCloud experience, send them to firstname.lastname@example.org.