Linux 系统双网卡绑定配置实现

  [root@ ~]# cat /etc/redhat-release     CentOS release 6.8 (Final)    [root@ ~]# uname -r    2.6.32-642.6.1.el6.x86_64

  [root@ ~]# /etc/init.d/iptables stop    [root@ ~]# chkconfig iptables off    

  [root@ ~]#setenforce 0   [root@ ~]#sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config  

  [root@ ~]# /etc/init.d/NetworkManager stop    Stopping NetworkManager daemon:      [ OK ]    [root@ ~]# chkconfig NetworkManager off    [root@ ~]# /etc/init.d/network restart    

  [root@ ~]# cd /etc/sysconfig/network-scripts/  [root@ network-scripts]# cat >ifcfg-eth1 <<EOF  DEVICE=eth1  ONBOOT=yes  BOOTPROTO=none  USERCTL=no  MASTER=bind0  EOF  

  [root@ network-scripts]# cat >ifcfg-eth2 <<EOF      DEVICE=eth2  ONBOOT=yes  BOOTPROTO=none  USERCTL=no  MASTER=bind0  EOF  

  [root@ network-scripts]# 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  

  [root@ network-scripts]# cat >/etc/modprobe.conf <<EOF  alias bind0 bonding  options bind0 miimon=100 mode=6  EOF

  [root@ network-scripts]# cat >>/etc/rc.local <<EOF    ifenslave bind0 eth1 eth2    EOF    

  [root@LVS-2 network-scripts]# 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 ]

  [root@LVS-2 network-scripts]# ifenslave bind0 eth1 eth2

  [root@LVS-2 network-scripts]# 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  

  [root@LVS-2 network-scripts]# 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)