5.3. 创建持久性命名规则

流程

1. 将 worker 节点的 MAC 地址名称收集到文件中，并为需要保留的接口提供名称。这个示例使用文件 70-persistent-net.rules 来存储详情。

   $ cat <<EOF > 70-persistent-net.rules
   SUBSYSTEM=="net",ACTION=="add",ATTR{address}=="b8:3f:d2:3b:51:28",ATTR{type}=="1",NAME="ibs2f0"
   SUBSYSTEM=="net",ACTION=="add",ATTR{address}=="b8:3f:d2:3b:51:29",ATTR{type}=="1",NAME="ens8f0np0"
   SUBSYSTEM=="net",ACTION=="add",ATTR{address}=="b8:3f:d2:f0:36:d0",ATTR{type}=="1",NAME="ibs2f0"
   SUBSYSTEM=="net",ACTION=="add",ATTR{address}=="b8:3f:d2:f0:36:d1",ATTR{type}=="1",NAME="ens8f0np0"
   EOF

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2. 将该文件转换为没有换行符的 base64 字符串，并将输出设置为变量 PERSIST ：

   $ PERSIST=`cat 70-persistent-net.rules| base64 -w 0`
   
   $ echo $PERSIST
   U1VCU1lTVEVNPT0ibmV0IixBQ1RJT049PSJhZGQiLEFUVFJ7YWRkcmVzc309PSJiODozZjpkMjozYjo1MToyOCIsQVRUUnt0eXBlfT09IjEiLE5BTUU9ImliczJmMCIKU1VCU1lTVEVNPT0ibmV0IixBQ1RJT049PSJhZGQiLEFUVFJ7YWRkcmVzc309PSJiODozZjpkMjozYjo1MToyOSIsQVRUUnt0eXBlfT09IjEiLE5BTUU9ImVuczhmMG5wMCIKU1VCU1lTVEVNPT0ibmV0IixBQ1RJT049PSJhZGQiLEFUVFJ7YWRkcmVzc309PSJiODozZjpkMjpmMDozNjpkMCIsQVRUUnt0eXBlfT09IjEiLE5BTUU9ImliczJmMCIKU1VCU1lTVEVNPT0ibmV0IixBQ1RJT049PSJhZGQiLEFUVFJ7YWRkcmVzc309PSJiODozZjpkMjpmMDozNjpkMSIsQVRUUnt0eXBlfT09IjEiLE5BTUU9ImVuczhmMG5wMCIK

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3. 运行以下命令，创建机器配置并在自定义资源文件中设置 base64 编码：

   $ cat <<EOF > 99-machine-config-udev-network.yaml

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   apiVersion: machineconfiguration.openshift.io/v1
   kind: MachineConfig
   metadata:
      labels:
        machineconfiguration.openshift.io/role: worker
      name: 99-machine-config-udev-network
   spec:
      config:
        ignition:
          version: 3.2.0
        storage:
          files:
          - contents:
              source: data:text/plain;base64,$PERSIST
            filesystem: root
            mode: 420
            path: /etc/udev/rules.d/70-persistent-net.rules

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4. 运行以下命令在集群中创建机器配置：

   $ oc create -f 99-machine-config-udev-network.yaml

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   输出示例

   machineconfig.machineconfiguration.openshift.io/99-machine-config-udev-network created

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5. 使用 get mcp 命令查看机器配置状态：

   $ oc get mcp

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   输出示例

   NAME     CONFIG                                             UPDATED   UPDATING   DEGRADED   MACHINECOUNT   READYMACHINECOUNT   UPDATEDMACHINECOUNT   DEGRADEDMACHINECOUNT   AGE
   master   rendered-master-9adfe851c2c14d9598eea5ec3df6c187   True      False      False      1              1                   1                     0                      6h21m
   worker   rendered-worker-4568f1b174066b4b1a4de794cf538fee   False     True       False      2              0                   0                     0                      6h21m

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