Linux系统双网卡绑定配置教程发布时间:2018/8/29 18:08:00 阅读次数:

    系统版本
  [root@ ~]# cat /etc/redhat-release
  CentOS release 6.8 (Final)
  [root@ ~]# 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   服务器网卡(内网)
  eth2   服务器网卡(内网)
  [root@ ~]# /etc/init.d/iptables stop
  [root@ ~]#  chkconfig iptables off
  关闭selinux
  [root@ ~]#setenforce 0
  [root@ ~]#sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config
  禁用NetworkManager
  [root@ ~]# /etc/init.d/NetworkManager stop
  Stopping NetworkManager daemon:           [  OK  ]
  [root@ ~]# chkconfig NetworkManager off
  [root@ ~]# /etc/init.d/network restart
  双网卡绑定配置过程
  [root@ ~]# cd /etc/sysconfig/network-scripts/
  编辑eth1网卡
  [root@ network-scripts]# cat >ifcfg-eth1 <  > DEVICE=eth1
  > ONBOOT=yes
  > BOOTPROTO=none
  > USERCTL=no
  > MASTER=bind0
  > EOF
  编辑eth2网卡
  [root@ network-scripts]# cat >ifcfg-eth2 <  DEVICE=eth2
  ONBOOT=yes
  BOOTPROTO=none
  USERCTL=no
  MASTER=bind0
  EOF
  编辑bind0网卡
  [root@ network-scripts]# cat >ifcfg-bind0 <  > 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
  [root@ network-scripts]# cat >/etc/modprobe.conf <  > alias bind0 bonding
  > options bind0 miimon=100 mode=6
  > EOF
  加入开机自启动(/etc/rc.local)
  [root@ network-scripts]# cat >>/etc/rc.local <  > ifenslave bind0 eth1 eth2
  > EOF
  重启网络服务
  [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  ]
  配置使绑定立即生效
  [root@LVS-2 network-scripts]# ifenslave bind0 eth1 eth2
  测试联通
  [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
  此时会发现系统多一个网卡
  [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)

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