第 2 章 Installing a bootc image and publishing to a registry
MicroShift is built and published as image mode containers. When installing a Red Hat Enterprise Linux (RHEL) bootable container image with MicroShift, use either a prebuilt bootable container image or build your own custom bootable container image.
Image mode for RHEL is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
For more information about the support scope of Red Hat Technology Preview features, see the following link:
2.1. The image mode for RHEL with MicroShift workflow
To use image mode for RHEL, ensure that the following resources are available:
- A RHEL 9.4 host with an active Red Hat subscription for building MicroShift bootc images.
- A remote registry for storing and accessing bootc images.
- You can use image mode for RHEL with a MicroShift cluster on AArch64 or x86_64 system architectures.
The workflow for using image mode with MicroShift includes the following steps:
- Find and use a prebuilt MicroShift container image to install Red Hat Enterprise Linux (RHEL).
- Build a custom MicroShift container image if the prebuilt MicroShift container image requires customization.
- Run the container image.
The rpm-ostree file system is not supported in image mode. Do not use the rpm-ostree file system to modify deployments that use image mode.
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