网络组Network Teaming
网络组team：是将多个网卡聚合在一起，从而实现容错和提高吞吐量
1 创建网络组接口
nmcli connection add type team con-name TEAMname ifname INTname [config JSON]
TEAMname 指定连接名，INname指定接口名，
JSON指定runner方式，格式为：'{"runner":{"name":"METHOD"}}'
METHOD 可以是broadcast、roundrobin、activebackup、loadbalance、lacp
（1）创建网络接口组team0
[root@centos7 ~]# nmcli connection add type team con-name team0 ifname team0 config '{"runner":{"name":"loadbalance"}}'
Connection 'team0' (e70483a1-2688-4eb2-9466-8e732360291d) successfully added.
（2）给网路组team0配置IP地址
[root@centos7 ~]# nmcli connection modify team0 ipv4.method manual ipv4.addresses 200.200.200.200/24 gw4 200.200.200.1
2 创建port接口（SLAVE）
既就是生成组TEAM组成员的配置文件。
注意：这个配置文件和网卡配置文件是相互独立的。
nmcli connection add type team-slave con-name SLAVEname ifname INname master TEAMname
SLAVEname 指定连接名，INTname指定网络接口名（相当于指定要加入网络组的网卡名），TEAMnmae指定所属网络组。
若连接名不指定，默认为team-slave-IFACE
创建接口组
这里使用ens34、ens38两块网卡
[root@centos7 ~]# nmcli connection add con-name team0-ens34 type team-slave ifname ens34 master team0 Connection 'team0-ens34' (a481fb6d-bf61-413d-a2c7-289966bee1a7) successfully added. [root@centos7 ~]# nmcli connection add con-name team0-ens38 type team-slave ifname ens38 master team0 Connection 'team0-ens38' (758d0eba-1625-46b2-b539-1d853a45be6b) successfully added.
3 启用网络组
启用网络组：nmcli connection up team0
启用组成员：nmcli connection up SLAVEname
[root@centos7 ~]# nmcli connection up team0 Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/20) [root@centos7 ~]# nmcli connection up team0-ens34 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/23) [root@centos7 ~]# nmcli connection up team0-ens38 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/24)
4 查看网络组状态
teamdctl TEAMname state
[root@centos7 ~]# teamdctl team0 state
setup:
runner: loadbalance
ports:
ens34
link watches:
link summary: up
instance[link_watch_0]:
name: ethtool
link: up
down count: 0
ens38
link watches:
link summary: up
instance[link_watch_0]:
name: ethtool
link: up
down count: 0
5 网络组配置文件
（1）MASTER配置文件
[root@centos7 ~]# cat /etc/sysconfig/network-scripts/ifcfg-team0
DEVICE=team0
TEAM_CONFIG="{\"runner\":{\"name\":\"loadbalance\"}}"
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
NAME=team0
UUID=e70483a1-2688-4eb2-9466-8e732360291d
ONBOOT=yes
DEVICETYPE=Team
IPADDR=200.200.200.200
PREFIX=24
GATEWAY=200.200.200.1
（2）组成员（SLAVE）配置文件
[root@centos7 ~]# cat /etc/sysconfig/network-scripts/ifcfg-team0-ens34
NAME=team0-ens34
UUID=a481fb6d-bf61-413d-a2c7-289966bee1a7
DEVICE=ens34
ONBOOT=yes
TEAM_MASTER=team0
DEVICETYPE=TeamPort
6 删除网络组
（1）断开连接
[root@centos7 ~]# nmcli connection down team0 Connection 'team0' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)
查看下状态
[root@centos7 ~]# teamdctl team0 state Device "team0" does not exist
[root@centos7 ~]# nmcli connection show
NAME UUID TYPE DEVICE
ens33 be9d1f2f-20e0-4282-9cb5-0da4c8b0fc7c 802-3-ethernet ens33
virbr0 8b1532d4-d99b-4201-8163-44d733302230 bridge virbr0
team0 e70483a1-2688-4eb2-9466-8e732360291d team --
team0-ens34 a481fb6d-bf61-413d-a2c7-289966bee1a7 802-3-ethernet --
team0-ens38 758d0eba-1625-46b2-b539-1d853a45be6b 802-3-ethernet --
可以看到已经关闭成功
（2）删除TEAM组成员
[root@centos7 ~]# nmcli connection delete team0-ens34 Connection 'team0-ens34' (a481fb6d-bf61-413d-a2c7-289966bee1a7) successfully deleted. [root@centos7 ~]# nmcli connection delete team0-ens38 Connection 'team0-ens38' (758d0eba-1625-46b2-b539-1d853a45be6b) successfully deleted.
（3）删除TEAM组
[root@centos7 ~]# nmcli connection delete team0 Connection 'team0' (e70483a1-2688-4eb2-9466-8e732360291d) successfully deleted.
查看一下
[root@centos7 ~]# nmcli connection show NAME UUID TYPE DEVICE ens33 be9d1f2f-20e0-4282-9cb5-0da4c8b0fc7c 802-3-ethernet ens33 virbr0 8b1532d4-d99b-4201-8163-44d733302230 bridge virbr0
已经看不到team0 相关的内容，说明删除成功
