XTesting/kubespray/docs/fcos.md

   1 # Fedora CoreOS
   2
   3 Tested with stable version 34.20210611.3.0
   4
   5 Because package installation with `rpm-ostree` requires a reboot, playbook may fail while bootstrap.
   6 Restart playbook again.
   7
   8 ## Containers
   9
  10 Tested with
  11
  12 - containerd
  13 - crio
  14
  15 ## Network
  16
  17 ### calico
  18
  19 To use calico create sysctl file with ignition:
  20
  21 ```yaml
  22 files:
  23     - path: /etc/sysctl.d/reverse-path-filter.conf
  24       contents:
  25         inline: |
  26           net.ipv4.conf.all.rp_filter=1
  27 ```
  28
  29 ## libvirt setup
  30
  31 ### Prepare
  32
  33 Prepare ignition and serve via http (a.e. python -m http.server )
  34
  35 ```json
  36 {
  37   "ignition": {
  38      "version": "3.0.0"
  39   },
  40
  41   "passwd": {
  42     "users": [
  43       {
  44         "name": "ansibleUser",
  45         "sshAuthorizedKeys": [
  46           "ssh-rsa ..publickey.."
  47         ],
  48         "groups": [ "wheel" ]
  49       }
  50     ]
  51   }
  52 }
  53 ```
  54
  55 ### create guest
  56
  57 ```shell script
  58 machine_name=myfcos1
  59 ignition_url=http://mywebserver/fcos.ign
  60
  61 fcos_version=34.20210611.3.0
  62 kernel=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-kernel-x86_64
  63 initrd=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-initramfs.x86_64.img
  64 rootfs=https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/${fcos_version}/x86_64/fedora-coreos-${fcos_version}-live-rootfs.x86_64.img
  65 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}"
  66 sudo virt-install --name ${machine_name} --ram 4048 --graphics=none --vcpus 2 --disk size=20 \
  67                 --network bridge=virbr0 \
  68                 --install kernel=${kernel},initrd=${initrd},kernel_args_overwrite=yes,kernel_args="${kernel_args}"
  69 ```