使用nmcli配置主备模式链路聚合

现在让我们在CentOS 7中配置网卡绑定,运行ip link命令查看可以使用的网卡

[root@localhost ~]# ip link  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00  2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000      link/ether 08:00:27:7b:d3:32 brd ff:ff:ff:ff:ff:ff  3: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000      link/ether 08:00:27:81:d3:be brd ff:ff:ff:ff:ff:ff  


在这里使用enp0s3和enp0s8两个网卡配置 主备模式的链路聚合。

创建Team接口

[root@localhost ~]# nmcli connection add type team con-name team0 ifname team0 config '{"runner":{"name":"activebackup"}}'  Connection 'team0' (4df78635-b9fc-4539-ab02-27db11c656fe) successfully added.  


运行nmcli con show查看team0的配置

[root@localhost ~]# nmcli con show  NAME                UUID                                  TYPE      DEVICE  team0               4df78635-b9fc-4539-ab02-27db11c656fe  team      team0  enp0s3              5005942f-a7fd-4e55-b8e7-77928d8da72d  ethernet  enp0s3  Wired connection 1  45dee64a-53b3-3e2a-b2d4-e377f3e668a2  ethernet  enp0s8  

添加Slave接口

在这里使用enp0s3和enp0s8两个网卡作为team0的slave接口:

[root@localhost ~]# nmcli connection add type team-slave con-name team0-port1 ifname enp0s3 master team0  Connection 'team0-port1' (15183c4a-2053-4b53-ad58-de5a07ae3ae9) successfully added.  [root@localhost ~]# nmcli connection add type team-slave con-name team0-port2 ifname enp0s8 master team0  Connection 'team0-port2' (a34e20b0-3422-46e5-a947-bb2eaa6c0622) successfully added.  


查看端口配置信息:

[root@localhost ~]# nmcli connection show  NAME                UUID                                  TYPE      DEVICE  team0               4df78635-b9fc-4539-ab02-27db11c656fe  team      team0  enp0s3              5005942f-a7fd-4e55-b8e7-77928d8da72d  ethernet  enp0s3  Wired connection 1  45dee64a-53b3-3e2a-b2d4-e377f3e668a2  ethernet  enp0s8  team0-port1         15183c4a-2053-4b53-ad58-de5a07ae3ae9  ethernet  --  team0-port2         a34e20b0-3422-46e5-a947-bb2eaa6c0622  ethernet  --  

分配IP地址

给team0分配一个静态的IP地址并启动team0配置:

[root@localhost ~]# nmcli connection modify team0 ipv4.method manual ipv4.addresses 192.168.0.200/24 ipv4.gateway 192.168.0.1 ipv4.dns 202.102.128.68  [root@localhost ~]# nmcli connection up team0  Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/4)  

查看连接配置信息,发现team0-port1没有绑定在enp0s3这个网卡接口上

[root@localhost ~]# nmcli connection  


这是以内ifcfg-team0-port1配置文件和ifcfg-enp0s3两个配置文件都设置为开机启动了

所以我们需要关闭enp0s3的开机启动,在这里我们把enp0s3和Wired connection 1这两个配置都关掉开机启动

[root@localhost ~]# nmcli connection modify enp0s3 autoconnect no  [root@localhost ~]# nmcli connection modify Wired connection 1 autoconnect no  


然后重启一下网络服务,查看链接配置:

[root@localhost ~]# systemctl restart network  [root@localhost ~]# nmcli connection  [root@localhost ~]# ip ad  

可以看到team0-port1和team0-port2都绑定在对应的网卡上面了,team0的ip地址显示的是手动设置的192.168.0.200

验证

查看team0的状态:

[root@localhost ~]# teamdctl team0 state  setup:    runner: activebackup  ports:    enp0s3      link watches:        link summary: up        instance[link_watch_0]:          name: ethtool          link: up          down count: 0    enp0s8      link watches:        link summary: up        instance[link_watch_0]:          name: ethtool          link: up          down count: 0  runner:    active port: enp0s8  


现在活动的端口是enp0s8,我们断开这个端口,看一下主备模式配置是否工作:

[root@localhost ~]# nmcli device disconnect enp0s8  Device 'enp0s8' successfully disconnected.  [root@localhost ~]# teamdctl team0 state  setup:    runner: activebackup  ports:    enp0s3      link watches:        link summary: up        instance[link_watch_0]:          name: ethtool          link: up          down count: 0  runner:    active port: enp0s3  

看到活动接口切换到enp0s3上面了。

总结

主备模式的链路聚合将其中一个接口置于备份状态,并且仅当活动接口断开链接时才会使其处于活动状态。

本文原创地址:https://www.linuxprobe.com/nmcli-team-port.html编辑:逄增宝,审核员:逄增宝

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