Linux 系统双网卡绑定配置实现
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# cat /etc/redhat-release
CentOS release 6.8 (Final)
# uname -r
2.6.32-642.6.1.el6.x86_64
网卡说明
eth0 192.168.1.8（服务器外网卡）
eth1
eth2
两块服务器网卡(内网)
关闭防火墙
# /etc/init.d/iptables stop
# chkconfig iptables off
关闭selinux
#setenforce 0
#sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config
禁用NetworkManager
# /etc/init.d/NetworkManager stop
Stopping NetworkManager daemon: [ OK ]
# chkconfig NetworkManager off
# /etc/init.d/network restart
编辑eth1网卡
# cd /etc/sysconfig/network-scripts/
# cat >ifcfg-eth1 <<EOF
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
MASTER=bind0
EOF
编辑eth2网卡
# cat >ifcfg-eth2 <<EOF
DEVICE=eth2
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
MASTER=bind0
EOF
编辑bind0网卡
# cat >ifcfg-bind0 <<EOF
DEVICE=bind0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=none
IPADDR=10.0.0.8
NETMASK=255.255.255.0
GATEWAY=10.0.0.254
IPV6INIT=no
USERCTL=no
EOF
配置bond参数
# cat >/etc/modprobe.conf <<EOF
alias bind0 bonding
options bind0 miimon=100 mode=6
EOF
加入开机自启动(/etc/rc.local)
# cat >>/etc/rc.local <<EOF
ifenslave bind0 eth1 eth2
EOF
重启网络服务
# service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down interface eth2: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface bind0: WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/.
WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/.
Determining if ip address 10.0.0.8 is already in use for device bind0..[ OK ]
Bringing up interface eth0: Determining if ip address 192.168.1.8 is already in use for device eth0... [ OK ]
Bringing up interface eth1: RTNETLINK answers: File exists [ OK ]
Bringing up interface eth2: RTNETLINK answers: File exists [ OK ]
配置使绑定立即生效
# ifenslave bind0 eth1 eth2
测试联通
# ping 10.0.0.8
PING 10.0.0.8 (10.0.0.8) 56(84) bytes of data.
64 bytes from 10.0.0.8: icmp_seq=1 ttl=64 time=0.089 ms
64 bytes from 10.0.0.8: icmp_seq=2 ttl=64 time=0.046 ms
^C
--- 10.0.0.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1921ms
rtt min/avg/max/mdev = 0.046/0.067/0.089/0.023 ms
此时会发现系统多一个网卡
# ifconfig bind0
bind0
Link encap:Ethernet HWaddr 00:0C:29:CC:9B:5
inet addr:10.0.0.8 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fecc:9b55/64 Scope:LinkUP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:151 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11826 (11.5 KiB) TX bytes:258 (258.0 b)
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原文链接：https://segmentfault.com/a/1190000023033452
http://www.zzvips.com/article/80251.html
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