Linux系统—网卡绑定

一、网卡绑定

1、作用

• 增加网络带宽
• 避免网卡的单点故障

2、实现方式

• bond
• team

3、工作模式

• loadbalance
• activebackup

4、创建网卡绑定

• 删除物理网卡的配置

• 创建虚拟网卡，名称team1

[root@localhost ~]# nmcli connection add type team ifname team1 con-name team1 config '{"runner":{"name":"activebackup"}}'

• 绑定物理网卡

[root@localhost ~]# nmcli connection add type team-slave ifname ens33 con-name team1-ens33 master team1 
[root@localhost ~]# nmcli connection add type team-slave ifname ens37 con-name team1-ens37 master team1 

• 配置IP

[root@localhost ~]# nmcli connection modify team1 ipv4.addresses "192.168.140.10/24"
[root@localhost ~]# nmcli connection modify team1 ipv4.gateway "192.168.140.2"
[root@localhost ~]# nmcli connection modify team1 ipv4.dns "114.114.114.114"
[root@localhost ~]# nmcli connection modify team1 +ipv4.dns "223.5.5.5"
[root@localhost ~]# 
[root@localhost ~]# nmcli connection modify team1 ipv4.method manual
[root@localhost ~]# nmcli connection modify team1 autoconnect on
[root@localhost ~]# 
[root@localhost ~]# nmcli connection reload 
[root@localhost ~]# nmcli connection up team1

[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team1 state UP group default qlen 1000
    link/ether 00:0c:29:cc:6b:2f brd ff:ff:ff:ff:ff:ff
3: ens37: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team1 state UP group default qlen 1000
    link/ether 00:0c:29:cc:6b:2f brd ff:ff:ff:ff:ff:ff
7: team1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:0c:29:cc:6b:2f brd ff:ff:ff:ff:ff:ff
    inet 192.168.140.10/24 brd 192.168.140.255 scope global noprefixroute team1
       valid_lft forever preferred_lft forever
    inet6 fe80::8462:6f5d:56b0:48ec/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

• 查看网卡状态

[root@localhost ~]# teamdctl team1 state
setup:
  runner: activebackup
ports:
  ens33
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
  ens37
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: ens33