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Fedora CoreOS

Tested with stable version 37.20230322.3.0

Because package installation with rpm-ostree requires a reboot, playbook may fail while bootstrap. Restart playbook again.

Containers

Tested with

containerd
crio

Network

calico

To use calico create sysctl file with ignition:

files:
    - path: /etc/sysctl.d/reverse-path-filter.conf
      contents:
        inline: |
          net.ipv4.conf.all.rp_filter=1

libvirt setup

Prepare

Prepare ignition and serve via http (a.e. python -m http.server )

{
  "ignition": {
     "version": "3.0.0"
  },

  "passwd": {
    "users": [
      {
        "name": "ansibleUser",
        "sshAuthorizedKeys": [
          "ssh-rsa ..publickey.."
        ],
        "groups": [ "wheel" ]
      }
    ]
  }
}

create guest

machine_name=myfcos1
ignition_url=http://mywebserver/fcos.ign

fcos_version=34.20210611.3.0
kernel=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-kernel-x86_64
initrd=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-initramfs.x86_64.img
rootfs=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-rootfs.x86_64.img
kernel_args="console=ttyS0 coreos.live.rootfs_url=${rootfs} coreos.inst.install_dev=/dev/sda coreos.inst.stream=stable coreos.inst.ignition_url=${ignition_url}"
sudo virt-install --name ${machine_name} --ram 4048 --graphics=none --vcpus 2 --disk size=20 \
                --network bridge=virbr0 \
                --install kernel=${kernel},initrd=${initrd},kernel_args_overwrite=yes,kernel_args="${kernel_args}"

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