Channel Bonding

這篇是實作bonding的概念(兩張網卡的備援機制)

概念 : 主要有兩個腳色，Master(ifcfg-bond0)與Slave(eth0、eth1)

當eth0網卡掛掉的時候，eth1會直接接管，讓網路正常運作

LAB:

首先先在虛機新增網路介面卡(e1000) <--- eth1

 #service NetworkManager stop
 #chkconfig NetworkManager off

[Slave(eth0、eth1)]
 #echo 'DEVICE=eth1' > /etc/sysconfig/network-scripts/ifcfg-eth1
 #echo 'ONBOOT=yes' >> /etc/sysconfig/network-scripts/ifcfg-eth1
 #echo 'MASTER=bond0' >> /etc/sysconfig/network-scripts/ifcfg-eth1
 #echo 'SLAVE=yes' >> /etc/sysconfig/network-scripts/ifcfg-eth1

因為eth0的設定是跟eth1一樣的，只有DEVICE的部分需要更改而已

所以

#cp /etc/sysconfig/network-scripts/ifcfg-eth1 /etc/sysconfig/network-scripts/ifcfg-eth0
#sed -i 's/eth1/eth0/' /etc/sysconfig/network-scripts/ifcfg-eth0

這樣SLAVE的部分就算是大功告成了，再來就要設定他們的主人了

 #echo 'DEVICE=bond0' >> /etc/sysconfig/network-scripts/ifcfg-bond0
 #echo 'ONBOOT=yes' >> /etc/sysconfig/network-scripts/ifcfg-bond0
 #echo 'IPADDR=192.168.0.140' >> /etc/sysconfig/network-scripts/ifcfg-bond0
 #echo 'PREFIX=24' >> /etc/sysconfig/network-scripts/ifcfg-bond0
 #echo 'BONDING_OPTS="mode=1 miimon=50"' >> /etc/sysconfig/network-scripts/ifcfg-bond0
 #cat /etc/sysconfig/network-scripts/ifcfg-bond0
 #service network restart