Centos7 配置网卡链路聚合

编程语言 2018-07-11 10:49:35 阅读次数: 0

一、系统环境

1、在VMware Workstation部署Centos7系统

2、添加网卡




3、查看网卡，看到新加的两张网卡（eno33554984,eno50332208）是没有IP地址的

[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:10:c4:16 brd ff:ff:ff:ff:ff:ff
    inet 192.168.253.131/24 brd 192.168.253.255 scope global dynamic eno16777736
       valid_lft 1601sec preferred_lft 1601sec
    inet6 fe80::20c:29ff:fe10:c416/64 scope link 
       valid_lft forever preferred_lft forever
3: eno33554984: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:10:c4:20 brd ff:ff:ff:ff:ff:ff
4: eno50332208: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:10:c4:2a brd ff:ff:ff:ff:ff:ff

二、配置过程

1、nmcli查看设备状态，新增的网卡CONNECTION为Wired connection 2和1状态

[root@localhost ~]# nmcli device status
DEVICE       TYPE      STATE      CONNECTION         
eno16777736  ethernet  connected  eno16777736        
eno33554984  ethernet  connected  Wired connection 2 
eno50332208  ethernet  connected  Wired connection 1 
lo           loopback  unmanaged  --  

如果CONNECTION显示：Wired connection，删除即可

[root@localhost ~]# nmcli connection delete Wired\ connection\ 2
Connection 'Wired connection 2' (53ae8d3b-0774-42bb-949c-ae01a7fb22b8) successfully deleted.
[root@localhost ~]# nmcli connection delete Wired\ connection\ 1
Connection 'Wired connection 1' (25511265-8a01-4a1c-a370-14091516243b) successfully deleted.

2、创建链接聚合team1并查看网卡状态

[root@localhost ~]# nmcli connection add type team con-name team1 ifname team1 config '{"runner":{"name":"activebackup"}}'
Connection 'team1' (11162383-33d9-4b86-9cee-1349c9c273f7) successfully added.
[root@localhost ~]# nmcli device status 
DEVICE       TYPE      STATE                                  CONNECTION  
eno16777736  ethernet  connected                              eno16777736 
team1        team      connecting (getting IP configuration)  team1       
eno33554984  ethernet  disconnected                           --          
eno50332208  ethernet  disconnected                           --          
lo           loopback  unmanaged                              --          
[root@localhost ~]# nmcli connection show
NAME         UUID                                  TYPE            DEVICE      
eno16777736  2a18182f-7e85-40bf-93bc-c28fe4564ba3  802-3-ethernet  eno16777736 
team1        11162383-33d9-4b86-9cee-1349c9c273f7  team            team1

3、将两张新网卡添加到这个team1中并查看网卡状态

[root@localhost ~]# nmcli connection add type team-slave con-name eno33554984 ifname eno33554984 master team1
Connection 'eno33554984' (722991e8-a542-4761-b347-334d13cae25a) successfully added.
[root@localhost ~]#
[root@localhost ~]# nmcli connection add type team-slave con-name eno50332208 ifname eno50332208 master team1
Connection 'eno50332208' (154fdde2-f162-47d5-b2d4-11dd89ae3a0f) successfully added.
[root@localhost ~]# nmcli device status 
DEVICE       TYPE      STATE      CONNECTION  
eno16777736  ethernet  connected  eno16777736 
eno33554984  ethernet  connected  eno33554984 
eno50332208  ethernet  connected  eno50332208 
team1        team      connected  team1       
lo           loopback  unmanaged  --          
[root@localhost ~]# nmcli connection show
NAME         UUID                                  TYPE            DEVICE      
eno16777736  2a18182f-7e85-40bf-93bc-c28fe4564ba3  802-3-ethernet  eno16777736 
eno50332208  154fdde2-f162-47d5-b2d4-11dd89ae3a0f  802-3-ethernet  eno50332208 
eno33554984  722991e8-a542-4761-b347-334d13cae25a  802-3-ethernet  eno33554984 
team1        11162383-33d9-4b86-9cee-1349c9c273f7  team            team1

4、配置team1的IP地址,红色框是需要修改和添加的内容

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-team1

5、重启网卡服务

[root@localhost ~]# systemctl restart network

查看到网卡状态都是OK

[root@localhost ~]# systemctl status  network
● network.service - LSB: Bring up/down networking
   Loaded: loaded (/etc/rc.d/init.d/network)
   Active: active (exited) since Mon 2018-07-09 18:29:13 CST; 21s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3353 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)
  Process: 3657 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)

Jul 09 18:29:13 localhost.localdomain network[3657]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Jul 09 18:29:13 localhost.localdomain network[3657]: [  OK  ]
Jul 09 18:29:13 localhost.localdomain network[3657]: Bringing up interface eno16777736:  Connection successfully activated (D-Bus active pat...tion/6)
Jul 09 18:29:13 localhost.localdomain network[3657]: [  OK  ]
Jul 09 18:29:13 localhost.localdomain network[3657]: Bringing up interface eno33554984:  Connection successfully activated (D-Bus active pat...tion/7)
Jul 09 18:29:13 localhost.localdomain network[3657]: [  OK  ]
Jul 09 18:29:13 localhost.localdomain network[3657]: Bringing up interface eno50332208:  Connection successfully activated (D-Bus active pat...tion/9)
Jul 09 18:29:13 localhost.localdomain network[3657]: [  OK  ]
Jul 09 18:29:13 localhost.localdomain network[3657]: Bringing up interface team1:  [  OK  ]
Jul 09 18:29:13 localhost.localdomain systemd[1]: Started LSB: Bring up/down networking.
Hint: Some lines were ellipsized, use -l to show in full.

6、查看team1的IP地址和聚合配置，可以看到eno33554984是当前主接口

[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:10:c4:16 brd ff:ff:ff:ff:ff:ff
    inet 192.168.253.131/24 brd 192.168.253.255 scope global dynamic eno16777736
       valid_lft 1727sec preferred_lft 1727sec
    inet6 fe80::20c:29ff:fe10:c416/64 scope link 
       valid_lft forever preferred_lft forever
3: eno33554984: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team1 state UP qlen 1000
    link/ether 00:0c:29:10:c4:20 brd ff:ff:ff:ff:ff:ff
4: eno50332208: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team1 state UP qlen 1000
    link/ether 00:0c:29:10:c4:20 brd ff:ff:ff:ff:ff:ff
6: team1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether 00:0c:29:10:c4:20 brd ff:ff:ff:ff:ff:ff
    inet 192.168.253.140/24 brd 192.168.253.255 scope global team1
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe10:c420/64 scope link 
       valid_lft forever preferred_lft forever
[root@localhost ~]# teamdctl team1 state
setup:
  runner: activebackup
ports:
  eno33554984
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
  eno50332208
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eno33554984

7、模拟接口故障，关掉一个接口测试，主接口变为eno50332208

[root@localhost ~]# ifdown eno33554984
Device 'eno33554984' successfully disconnected.
[root@localhost ~]# teamdctl team1 state
setup:
  runner: activebackup
ports:
  eno50332208
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eno50332208

8、当故障接口恢复也不会抢占主接口，从而避免网络抖动

[root@localhost ~]# ifup eno33554984
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/10)
[root@localhost ~]# teamdctl team1 state
setup:
  runner: activebackup
ports:
  eno33554984
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
  eno50332208
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eno50332208



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