[OKD 4.21.0-okd-scos.5] Manual single node installation fails during first boot

[Shorty110]

Describe the bug

Hi,

I would like to deploy a single node okd instance on VMware as described in the documentation here:
https://docs.okd.io/4.19/installing/installing_sno/install-sno-installing-sno.html

Booting the iso fails during these steps:
sysroot.mount
coreos-liveiso-persist-osmet.service

The VM has the advanced parameter "disk.EnableUUID" set to "TRUE" and only has a single disk.
Here is how I created the ISO:

export OKD_VERSION=4.21.0-okd-scos.5
export ARCH=x86_64

curl -L https://github.com/okd-project/okd/releases/download/$OKD_VERSION/openshift-client-linux-$OKD_VERSION.tar.gz -o oc.tar.gz
tar zxf oc.tar.gz
chmod +x oc

curl -L https://github.com/okd-project/okd/releases/download/$OKD_VERSION/openshift-install-linux-$OKD_VERSION.tar.gz -o openshift-install-linux.tar.gz
tar zxvf openshift-install-linux.tar.gz
chmod +x openshift-install

export ISO_URL=$(./openshift-install coreos print-stream-json | jq . | grep location | grep $ARCH | grep iso | cut -d\" -f4)
echo $ISO_URL
# https://rhcos.mirror.openshift.com/art/storage/prod/streams/c10s/builds/10.0.20251103-0/x86_64/scos-10.0.20251103-0-live-iso.x86_64.iso

vim install-config.yaml
apiVersion: v1
baseDomain: company.tld
compute:
- name: worker
  replicas: 0
controlPlane:
  name: master
  replicas: 1
metadata:
  name: openshift-test
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.106.0.0/16
  networkType: OVNKubernetes
  serviceNetwork:
  - 172.30.0.0/16
platform:
  none: {}
bootstrapInPlace:
  installationDisk: /dev/sda
pullSecret: '{"auths":{"fake":{"auth":"aWQ6cGFzcwo="}}}'
sshKey: |
  ecdsa-sha2-nistp256 <my_pub_key>
  
mkdir sno
cp install-config.yaml sno

./openshift-install --dir=sno create single-node-ignition-config

alias coreos-installer='podman run --privileged --pull always --rm -v /dev:/dev -v /run/udev:/run/udev -v $PWD:/data -w /data quay.io/coreos/coreos-installer:release'
coreos-installer iso ignition embed -fi sno/bootstrap-in-place-for-live-iso.ign fcos-live.iso

I tried it with different versions and also openshift / rhcos but always reach the same error.
Any advise?

Thank you,
Christoph

Version

4.21.0-okd-scos.5

Reproducibility

100%

Log Bundle

No response

[jatinsu]

Could you provide the hardware config for your VM? Could you also give us serial console logs from your VMware enviorment? You can do this by adding a new Serial port as a new device and it should connect when the VM with your OKD instance powers on. This would give us much better logs

[Shorty110]

Hi @jatinsu,

thank you for looking into this. Here is the VM hardware config:

And attached is a boot log file:
SNO_serial_console.log

[Shorty110]

Hi @jatinsu, do you have any idea what I'm doing wrong?
I found this blog that says at least two partitions/disks are needed on a okd node but I don't find anything in the docs regarding that. I tried several different ways for the "installationDisk" setting (/dev/sda, /dev/disk/by-id/wwn-...,) but it did not change the outcome.

[Shorty110]

FYI, I tried it with the assisted installer and with a "full iso" I get the same error. With the minimal iso deployment works.

[jatinsu]

Sorry, been a bit swamped lately ☹️. I'll attempt to recreate your environment next week and I'll let you know if I run into the same issue.

[jatinsu]

Hey, small update. I'm working on getting access to VMware workstation. As a Red Hat employee, I have to go through official channels in order to use VMware workstation so it might take a bit for legal to go through it but I should hopefully have it soon!