ignition.yaml

variant: fcos
version: 1.4.0
storage:
  files:
    # CRI-O DNF module
    - path: /etc/dnf/modules.d/cri-o.module
      mode: 0644
      overwrite: true
      contents:
        inline: |
          [cri-o]
          name=cri-o
          stream=1.24
          profiles=
          state=enabled
    # YUM repository for kubeadm, kubelet and kubectl
    - path: /etc/yum.repos.d/kubernetes.repo
      mode: 0644
      overwrite: true
      contents:
        inline: |
          [kubernetes]
          name=Kubernetes
          baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
          enabled=1
          gpgcheck=1
          gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
    # configuring automatic loading of br_netfilter on startup
    - path: /etc/modules-load.d/br_netfilter.conf
      mode: 0644
      overwrite: true
      contents:
        inline: br_netfilter
    # setting kernel parameters required by kubelet
    - path: /etc/sysctl.d/kubernetes.conf
      mode: 0644
      overwrite: true
      contents:
        inline: |
          net.bridge.bridge-nf-call-iptables=1
          net.ipv4.ip_forward=1
passwd: # setting login credentials
  users:
    - name: core
      ssh_authorized_keys:
        - <YOUR PUBLIC KEY>