ignition-config.json

{
  "ignition": { "version": "2.0.0" },
  "storage": {
    "files": [{
       "filesystem": "root",
       "path": "/etc/hostname",
       "mode": 420,
       "contents": {"source": "data:,core1"}
     }],
    "filesystems": [{
      "mount": {
        "device": "/dev/sda",
        "format": "ext4",
        "create": {
          "force": true,
          "options": [ "--label=container_storage" ]
        }
      }
    }],
    "disks": [{
        "device": "/dev/sda",
        "wipeTable": true,
        "partitions": [{
          "label": "container_storage",
          "number": 1,
          "size": 200480,
          "start": 0
        }]
    }]
  },

    "passwd": {
      "users": [{
        "name": "cosman",
        "passwordHash": "$1$MJY9eKiv$M8mXY0ETOpRJTV8rwoI0A.",
        "sshAuthorizedKeys": [ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC2kJG/qk1mFMD3UrqRKB3UdOa/PPGGTjsmWz2U1F335HMqFfugYqqvztz8M486FaGeWJIe5jYQUcs8LNqt5/Kq04StmrkbJEIdWIklPH7lIz1/G1YoThxOilZUu95mR33OivICVBXpCBGknLs0aNpE9tOzz/wXLUgROKeg+dzjbW2benH+zzb+h9us480fRL1vPVUoKl8bEz60dLGEq66sOIeELAwVpuNWGfyDkgIzD/lpgglFCl9WrUj9SjEq76w3OTSCjAHNd1QVdevUiOPfZ3F/jK3DUwnyHr9ZJNl8xGBDi+kSf/TbH/KSewBc0uxgor89bsmZivSjP9bw/xHN [email protected]"],
        "create": {
          "groups": ["sudo", "docker"]
        }
      }]
    },
    "systemd": {
      "units": [{
        "name": "var-lib-data.mount",
        "enable": true,
        "contents": "[Mount]\nWhat=/dev/sda\nWhere=/var/lib/data\nType=ext4\n\n[Install]\nWantedBy=local-fs.target"
      }]
    }
}