centos7 bond0 双网卡配置

[root@openldap ~]# ifconfig

bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>  mtu 1500

        inet 192.168.31.48  netmask 255.255.255.0  broadcast 192.168.31.255

        inet6 fe80::20c:29ff:fe55:5ed3  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:55:5e:d3  txqueuelen 1000  (Ethernet)

        RX packets 4116  bytes 265898 (259.6 KiB)

        RX errors 0  dropped 21  overruns 0  frame 0

        TX packets 83  bytes 11927 (11.6 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500

        ether 00:0c:29:55:5e:d3  txqueuelen 1000  (Ethernet)

        RX packets 828  bytes 52513 (51.2 KiB)

        RX errors 0  dropped 1  overruns 0  frame 0

        TX packets 58  bytes 9677 (9.4 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500

        ether 00:0c:29:55:5e:d3  txqueuelen 1000  (Ethernet)

        RX packets 829  bytes 52547 (51.3 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1  (Local Loopback)

        RX packets 166  bytes 14000 (13.6 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 166  bytes 14000 (13.6 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@openldap ~]# cat /etc/sysconfig/network-scripts/ifcfg-bond0

BOOTPROTO=static

DEVICE=bond0

NAME=bond0

TYPE=Bond

BONDING_MASTER=yes

ONBOOT=yes

IPADDR=192.168.31.48

NETMASK=255.255.255.0

GATEWAY=192.168.31.1

PREFIX=24

BONDING_OPTS="miimon=200 mode=1"

[root@openldap ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE=Ethernet

BOOTPROTO=none

DEVICE=eth0

NAME=eth0

BONDING_MASTER=yes

ONBOOT=yes

MASTER=bond0

SLAVE=yes

[root@openldap ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1

TYPE=Ethernet

BOOTPROTO=none

DEVICE=eth1

NAME=eth1

BONDING_MASTER=yes

ONBOOT=yes

MASTER=bond0

SLAVE=yes

[root@openldap ~]#

[root@openldap ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup)

Primary Slave: None

Currently Active Slave: eth0

MII Status: up

MII Polling Interval (ms): 200

Up Delay (ms): 0

Down Delay (ms): 0

Slave Interface: eth0

MII Status: up

Speed: 10000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:55:5e:d3

Slave queue ID: 0

Slave Interface: eth1

MII Status: up

Speed: 10000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:55:5e:dd

Slave queue ID: 0

[root@openldap ~]#

[root@openldap ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup)

Primary Slave: None

Currently Active Slave: eth0

MII Status: up

MII Polling Interval (ms): 200

Up Delay (ms): 0

Down Delay (ms): 0

Slave Interface: eth0

MII Status: up

Speed: 10000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:55:5e:d3

Slave queue ID: 0

Slave Interface: eth1

MII Status: up

Speed: 10000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:0c:29:55:5e:dd

Slave queue ID: 0

[root@openldap ~]#

 

可能会启动失败，bond0的状态不是UP, 查看/var/log/message可看到如下信息

Error: Connection activation failed: Master device bond0 unmanaged or not available for activation

 

需要禁用NetworkManager

 

systemctl stop NetworkManager.service

systemctl disable NetworkManager.service