Linux网卡绑定bond0-实验

虚拟机添加网卡

ip addr  查看新增的网卡是否读取

添加bonding接口

[root@centos8~]$nmcli con add type bond con-name mybond0 ifname bond0 mode active-backup ipv4.method manual ipv4.addresses 10.0.0.111/24
Connection 'mybond0' (9f639157-8a97-4c6e-9785-5ccaecdabdfb) successfully added.

添加从属接口

[root@centos8~]$nmcli con add type bond-slave ifname eth1 master bond0
Connection 'bond-slave-eth1' (22dd25a3-a5bc-46d9-874e-008b536c181a) successfully added.
[root@centos8~]$nmcli con add type bond-slave ifname eth2 master bond0
Connection 'bond-slave-eth2' (6e662363-1adb-4511-ba8e-7ab07ba7efdb) successfully added.

　　注：如无为从属接口提供连接名，则该名称是接口名称加类型构成

启动绑定，则必须先启动从属接口

[root@centos8~]$nmcli con reload
[root@centos8~]$nmcli con up bond-slave-eth1
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
[root@centos8~]$nmcli con up bond-slave-eth2
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/6)

启动绑定

[root@centos8~]$nmcli con up mybond0
Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)

　　测试

[root@centos8~]$ip link set eth0 down    禁用eth0 让bond0工作

[root@centos8~]$ip addr
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: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 00:50:56:33:29:8d brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 00:0c:29:bd:f1:80 brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 00:0c:29:bd:f1:80 brd ff:ff:ff:ff:ff:ff permaddr 00:0c:29:bd:f1:8a
5: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:0c:29:bd:f1:80 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.111/24 brd 10.0.0.255 scope global noprefixroute bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::7f80:d8e3:83ec:8966/64 scope link noprefixroute
       valid_lft forever preferred_lft foreverl　

两张网卡都是启用状态

断掉eht1连接