cluster_require:
  # the etcd sync duration for 99%.(unit ns)
  etcd_disk_wal_fysnc_duration_seconds: 10000000
  allow_unsupported_distribution_setup: false
  # support ubuntu, centos.
  supported_os_distributions:
    - ubuntu
    - '"ubuntu"'
    - centos
    - '"centos"'
  require_network_plugin: ['calico', 'flannel', 'cilium', 'hybridnet', 'kube-ovn']
  # the minimal version of kubernetes to be installed.
  kube_version_min_required: v1.19.10
  # memory size for each kube_control_plane node.(unit kB)
  # should be greater than or equal to minimal_master_memory_mb.
  minimal_master_memory_mb: 10
  # memory size for each kube_worker node.(unit kB)
  # should be greater than or equal to minimal_node_memory_mb.
  minimal_node_memory_mb: 10
  require_etcd_deployment_type: ['internal','external']
  require_container_manager: ['docker', 'containerd']
  # the minimal required version of containerd to be installed.
  containerd_min_version_required: v1.6.0
  supported_architectures:
    amd64:
      - amd64
      - x86_64
    arm64:
      - arm64
      - aarch64
  min_kernel_version: 4.9.17