27.3.3. 使用 systemd 链接文件重命名 IPoIB 设备

流程

1. 显示设备 ib0 的硬件地址：

   # ip addr show ib0
   
   7: ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc fq_codel state UP group default qlen 256
       link/infiniband 00:00:10:71:fe:80:00:00:00:00:00:00:94:6d:ae:03:00:41:80:02 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
       altname ibp7s0
       altname ibs2
       inet 172.31.0.181/24 brd 172.31.0.255 scope global dynamic noprefixroute ib0
          valid_lft 2899sec preferred_lft 2899sec
       inet6 fe80::f652:1403:7b:e1b1/64 scope link noprefixroute
          valid_lft forever preferred_lft forever

2. 要将 MAC 地址为 00:00:10:71:fe:80:00:00:00:00:00:00:94:6d:ae:03:00:41:80:02 的接口命名为 mlx5_ib0，请创建具有以下内容的 /etc/systemd/network/70-custom-ifnames.link 文件：

   [Match]
   MACAddress=00:00:10:71:fe:80:00:00:00:00:00:00:94:6d:ae:03:00:41:80:02
   
   [Link]
   Name=_mlx5_ib0

   此链接文件与 MAC 地址相匹配，并将网络接口重命名为 Name 参数中设置的名称。

验证

1. 重启主机：

   # reboot

2. 验证具有链接文件中指定的 MAC 地址的设备是否已分配给 mlx5_ib0 ：

   # ip addr show mlx5_ib0
   
   3: mlx5_ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2044 qdisc mq state UP group default qlen 1000
       link/infiniband 00:00:00:8c:fe:80:00:00:00:00:00:00:94:6d:ae:03:00:41:80:02 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff
       altname ibp196s0f0
       altname ibs2f0
       inet 172.31.0.40/24 brd 172.31.0.255 scope global dynamic noprefixroute mlx5_ib0
          valid_lft 2497sec preferred_lft 2497sec
       inet6 fe80::6a6d:6879:7ccf:34c7/64 scope link noprefixroute
          valid_lft forever preferred_lft forever