文档首页> 鲲鹏BoostKit虚拟化使能套件> 用户指南> Kube-OVN组件 用户指南> 子网管理> Node子网
更新时间：2021-08-26 GMT+08:00
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Node子网

在Kubernetes的网络规范中，要求Node可以和所有的Pod直接通信。为了达到这个目的Kube-OVN创建了一个join子网，并在每个Node节点创建了一块虚拟网卡ovn0接入join子网，通过该网络完成主机和Pod之间的网络互通。

如需更改Node子网配置，则需要在安装步骤时指定，参考配置内置网络章节。

  • 查看Node子网。
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    kubectl get subnet join -o yaml

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    apiVersion: kubeovn.io/v1
kind: Subnet
metadata:
  creationTimestamp: "2020-06-28T06:42:32Z"
  finalizers:
  - kube-ovn-controller
  generation: 2
  name: join
  resourceVersion: "749434"
  selfLink: /apis/kubeovn.io/v1/subnets/join
  uid: 3179fdc6-56a9-4211-a4c2-d922f4463adb
spec:
  cidrBlock: 100.64.0.0/16
  default: false
  excludeIps:
  - 100.64.0.1
  gateway: 100.64.0.1
  gatewayNode: ""
  gatewayType: distributed
  natOutgoing: false
  private: false
  protocol: IPv4
  provider: ovn
  underlayGateway: false
status:
  activateGateway: ""
  availableIPs: 65530
  conditions:
  - lastTransitionTime: "2020-06-28T06:42:33Z"
    lastUpdateTime: "2020-06-28T06:42:33Z"
    reason: ResetLogicalSwitchAclSuccess
    status: "True"
    type: Validated
  - lastTransitionTime: "2020-06-28T06:42:33Z"
    lastUpdateTime: "2020-06-28T06:42:33Z"
    reason: ResetLogicalSwitchAclSuccess
    status: "True"
    type: Ready
  - lastTransitionTime: "2020-06-28T06:42:33Z"
    lastUpdateTime: "2020-06-28T06:42:33Z"
    message: Not Observed
    reason: Init
    status: Unknown
    type: Error
  usingIPs: 3
  • 在Node节点查看ovn0网卡。
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    ifconfig ovn0

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    ovn0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1400
        inet 100.64.0.2  netmask 255.255.0.0  broadcast 100.64.255.255
        inet6 fe80::200:ff:fec6:936d  prefixlen 64  scopeid 0x20<link>
        ether 00:00:00:c6:93:6d  txqueuelen 1000  (Ethernet)
        RX packets 5673864  bytes 530785977 (506.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5243874  bytes 8069050878 (7.5 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
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