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