coreos-installer

coreos-installer is a program to assist with installing Fedora CoreOS (FCOS) and Red Hat Enterprise Linux CoreOS (RHCOS). It can do the following:

Install the operating system to a target disk, optionally customizing it with an Ignition config or first-boot kernel parameters (coreos-installer install)
Download and verify an operating system image for various cloud, virtualization, or bare metal platforms (coreos-installer download)
List Fedora CoreOS images available for download (coreos-installer list-stream)
Embed an Ignition config in a live ISO image to customize the running system that boots from it (coreos-installer iso ignition)
Wrap an Ignition config in an initrd image that can be appended to the live PXE initramfs to customize the running system that boots from it (coreos-installer pxe ignition)

The options available for each subcommand are available in the Command Line Reference or via the --help option.

Take a look at the Getting Started Guide for more information regarding how to download and use coreos-installer.

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