RHCOS 4.6 live PXE boot will now require a third artifact

[christianh814]

In OCP 4.6, there will be changes to how PXE needs to be set up. See the following issue tracker

[christianh814]

More info

The CoreOS team has received several BZs that use deprecated coreos-installer kernel arguments. These arguments are harmless, but they make it harder to discern what’s going on in the boot. After you’ve switched your tooling from the legacy RHCOS installer images to the new RHCOS 4.6 live images, please consider updating these kargs:

• coreos.inst=yes - Remove. We now enable installation if coreos.inst.install_dev is specified.
• coreos.inst.install_dev=sdX - Specify full device path, e.g. /dev/sda. The old format (without the preceding /dev/) will continue to be supported.
• coreos.inst.image_url - Remove, usually. By default, the installer now installs directly from the boot media. coreos.inst.image_url is only needed when installing a version of RHCOS that doesn’t match the boot media. In addition, this option disables automatic selection of the correct image for 512-byte/4K sector drives.
• coreos.inst.skip_media_check - Remove. If you need to disable GPG verification for an image specified by coreos.inst.image_url, specify coreos.inst.insecure.
• coreos.inst.ignition_url=skip - Remove. coreos.inst.ignition_url is no longer mandatory.
• rd.neednet=1 or rd.neednet=1 ip=dhcp - Remove unless other network configuration arguments are specified. The default is now to use DHCP.

Here’s a minimal example iPXE script for installing RHCOS:

#!ipxe
kernel https://example.com/rhcos-46.82.202008080040-0-live-kernel-x86_64 initrd=https://example.com/rhcos-46.82.202008080040-0-live-initramfs.x86_64.img coreos.live.rootfs_url=https://example.com/rhcos-46.82.202008080040-0-live-rootfs.x86_64.img coreos.inst.install_dev=/dev/sda coreos.inst.ignition_url=https://example.com/config.ign
boot

[christianh814]

This should be fixed now