Image
An image is a template for the running environment of a cloud host instance, encompassing the operating system, pre-installed software, and configurations.
Images are categorized into three types:
Standard images. Provided by UCloud Global officially, including various operating systems such as Linux and Windows.
Self-made images. Dedicated images created by users through their UHosts, visible only to the user who created them.
Shared images. Self-made images shared across projects in the same region. Shared projects can quickly create UHosts running in the same image environment.
Cloud market images. Provided by independent software vendors (ISVs) on the UCloud Global Marketplace platform, offering various software images and related services.
Outstanding Dedicated Image
The Outstanding Cloud Host Series adopts Network Enhancement 2.0 and RSSD Cloud Disk technologies. For Linux images, there are certain requirements for the image kernel, which must be at least 4.19 kernel. Therefore, for standard images of CentOS 8.0 and below / Ubuntu 20.04 and below / Debian 10.0 and below, UCloud Global has upgraded them all to the 4.19 kernel, replacing their original kernel. This high version kernel will not affect the use of upper-layer applications, and usually has higher security than lower version kernels.
For images that cannot support Outstanding Cloud Host after uploading, please contact technical support for guidance on kernel version upgrades.
There is no such kernel version requirement for Windows images.
Standard Image Selection
| Product Type | Machine Type | Filter Conditions | Remarks |
|---|---|---|---|
| Cloud Host | Outstanding Model | Image Features contain RssdAttachable, and filter out Vgpu_AMD, Vgpu_NVIDIA | Outstanding model requires dedicated images, identified by RssdAttachable |
| Cloud Host | ARM model | Image Features contain RssdAttachable、Aarch64_Type, and filter out Vgpu_AMD, Vgpu_NVIDIA | ARM model is a type in the Outstanding series, belonging to Outstanding O-type Ampere version |
| Cloud Host | Non-Outstanding Model | ImageName cannot contain “high kernel”, and filter out Vgpu_AMD, Vgpu_NVIDIA | Pseudo code demonstration: !ImageName.includes(“high kernel”) |
Vgpu_AMD、Vgpu_NVIDIA are image enhancement related image Tags for EPC products, which are not redundant here.