網路組Network Teaming

網路組team：是將多個網卡聚合在一起，從而實現容錯和提高吞吐量

1 創建網路組介面

nmcli connection add type team con-name TEAMname ifname INTname [config JSON]

TEAMname 指定連接名，INname指定介面名，

JSON指定runner方式，格式為：'{"runner":{"name":"METHOD"}}'

METHOD 可以是broadcast、roundrobin、activebackup、loadbalance、lacp

（1）創建網路介面組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）給網路組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 創建port介面（SLAVE）

既就是生成組TEAM組成員的配置文件。

註意：這個配置文件和網卡配置文件是相互獨立的。

nmcli connection add type team-slave con-name SLAVEname ifname INname master TEAMname

SLAVEname 指定連接名，INTname指定網路介面名（相當於指定要加入網路組的網卡名），TEAMnmae指定所屬網路組。

若連接名不指定，預設為team-slave-IFACE

創建介面組

    這裡使用ens34、ens38兩塊網卡

[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 啟用網路組

啟用網路組：nmcli connection up team0

啟用組成員：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 查看網路組狀態

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 網路組配置文件

（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）組成員（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 刪除網路組

（1）斷開連接

[root@centos7 ~]# nmcli connection down team0

Connection 'team0' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)

查看下狀態

[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 --

可以看到已經關閉成功

（2）刪除TEAM組成員

[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）刪除TEAM組

[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

已經看不到team0 相關的內容，說明刪除成功