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本文介绍在CentOS/RHEL 8操作系统上配置Network Teaming网络组的方法，也可称为NIC组合。
在RHEL/CentOS 8上配置network teaming daemon 要安装teamd，请在终端中输入以下命令： sudo dnf -y install teamd 运行rpm -qi teamd命令查看安装的teamd版本：
使用nmcli配置network teaming 参考：Linux上使用ifconfig、ip、netstat、nmcli命令查找可用的网络接口。 首先，确定将用作从属的网络接口： # ip link show 1: lo: 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: enp1s0: mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:8f:8c:86 brd ff:ff:ff:ff:ff:ff 3: enp7s0: mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:74:99:a9 brd ff:ff:ff:ff:ff:ff 4: enp8s0: mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:2b:db:9c brd ff:ff:ff:ff:ff:ff 由于我在RHEL/CentOS 8服务器机器上运行NetworkManager（参考：使用NetworkManager随机化MAC地址的方法），我将使用nmcli网络管理工具： # nmcli connection show
对于我的设置，我将使用两个网络设备：enp7s0和enp8s0，在开始配置之前，请删除与nmcli的连接：
这两个设备现在应处于断开连接状态： $ nmcli device status
创建新的team接口，名称为team0： $ nmcli connection add type team con-name team0 ifname team0 \ config '{ "runner": {"name": "loadbalance"}, "link_watch": {"name": "ethtool"}}' 你可以使用activebackup、broadcast、lacp、random、roundrobin命令替换loadbalance。 NetworkManager会将配置文件写入/etc/sysconfig/network-scripts/ifcfg-team-team0，要查看分配的其他值，请运行： $ nmcli con show team0 使用以下命令查看刚配置的Team接口： $ nmcli con show
为team接口分配IP地址、DNS和自动连接： nmcli con mod team0 ipv4.addresses 192.168.121.10/24 nmcli con mod team0 ipv4.gateway 192.168.121.1 nmcli con mod team0 ipv4.dns 8.8.8.8 nmcli con mod team0 ipv4.method manual nmcli con mod team0 connection.autoconnect yes 将Network Slave添加到team中： nmcli con add type team-slave con-name team0-slave0 ifname enp7s0 master team0 nmcli con add type team-slave con-name team0-slave1 ifname enp8s0 master team0 样本输出如下： Connection 'team0-slave0' (daa6fc23-cdef-40b1-9b9d-5157d6ff3910) successfully added. Connection 'team0-slave1' (a20cf7ee-fb08-4270-a6e7-b6e20cb490dc) successfully added. 确认连接：
重新启动连接： nmcli connection down team0 && nmcli connection up team0 应该看到分配的IP信息了： $ ip addr show dev team0 8: team0: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 52:54:00:74:99:a9 brd ff:ff:ff:ff:ff:ff inet 192.168.121.10/24 brd 192.168.121.255 scope global noprefixroute team0 valid_lft forever preferred_lft forever inet6 fe80::4c51:96b:c24e:ede9/64 scope link noprefixroute valid_lft forever preferred_lft forever $ ping -c 1 192.168.121.1 PING 192.168.121.1 (192.168.121.1) 56(84) bytes of data. 64 bytes from 192.168.121.1: icmp_seq=1 ttl=64 time=0.134 ms --- 192.168.121.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.134/0.134/0.134/0.000 ms 也可以使用teamdctl检查team状态： $ teamdctl team0 state setup: runner: loadbalance ports: enp7s0 link watches: link summary: up instance[link_watch_0]: name: ethtool link: up down count: 0 enp8s0 link watches: link summary: up instance[link_watch_0]: name: ethtool link: up down count: 0
使用nmcli删除Team 运行nmcli connection show命令显示连接：
Bring down team连接： nmcli connection down team0 删除slaves： $ nmcli connection delete team0-slave0 team0-slave1 Connection 'team0-slave0' (daa6fc23-cdef-40b1-9b9d-5157d6ff3910) successfully deleted. Connection 'team0-slave1' (a20cf7ee-fb08-4270-a6e7-b6e20cb490dc) successfully deleted. 删除team created： $ nmcli connection delete team0 Connection 'team0' (f763a709-3956-497f-b92c-5c06f848bee7) successfully deleted. 确认删除： $ nmcli connection show
使用ifcfg文件创建Network Team 要使用ifcfg文件创建Network Team，请在/etc/sysconfig/network-scripts/目录中创建一个文件，如下所示： $ cat /etc/sysconfig/network-scripts/ifcfg-team0 DEVICE=team0 NAME=team0 DEVICETYPE=Team ONBOOT=yes BOOTPROTO=none IPADDR=192.168.121.10 PREFIX=24 GATEWAY=192.168.121.1 TEAM_CONFIG='{"runner": {"name": "activebackup"}, "link_watch": {"name": "ethtool"}}' 要创建一个端口作为team0的member，请在/etc/sysconfig/network-scripts/目录中创建一个或多个文件，如下所示： $ cat /etc/sysconfig/network-scripts/ifcfg-team0-slave0 NAME=team0-slave0 DEVICE=enp7s0 ONBOOT=yes TEAM_MASTER=team0 DEVICETYPE=TeamPort $ cat /etc/sysconfig/network-scripts/ifcfg-team0-slave1 NAME=team0-slave1 DEVICE=enp8s0 ONBOOT=yes TEAM_MASTER=team0 DEVICETYPE=TeamPort 启动team interface： $ sudo ip link set enp7s0 down $ sudo ip link set enp8s0 down $ sudo ifup team0 列出team端口： $ teamnl team0 ports 4: enp8s0: up 4294967295Mbit FD 3: enp7s0: up 4294967295Mbit FD
附：关于管理managing Team的主要说明
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