centos7.2网卡绑定

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查看硬件状态

nmcli device status


1.关闭防火墙

systemctl status firewalld

systemctl stop firewalld

systemctl disable firewalld

systemctl mask firewalld


2.关闭selinux

sed -i 's/SELINUX=.*/SELINUX=disabled/' /etc/selinux/config

getenforce 0


3.关闭sshDNS解析

sed -i 's/#UseDNS yes/UseDNS no/' /etc/ssh/sshd_config

systemctl restart sshd.service


4.加载模块

centos7默认没有加bonding内核模板,加载方式

modprobe --first-time bonding


查看是否加载成功

lsmod | grep bonding 或者 modinfo bonding


5.配置nameserver

echo 'nameserver 218.85.157.99' >> /etc/resolv.conf


6.配置bond0网卡

备份旧的网卡

mv ifcfg-ens192{,.bak}


7.配置网卡bond0

nmcli conn add type bond con-name bond0 ifname bond0 mode active-backup [主备]

或者

nmcli conn add type bond con-name bond0 ifname bond0 mode balance-rr [轮询]


8.配置eth0和eth1 要绑定网卡

nmcli conn add type bond-slave con-name eth0 ifname ens192 master bond0

nmcli conn add type bond-slave con-name eth1 ifname ens224 master bond0


网卡配置信息如下:

[root@www network-scripts]#ifcfg-eth0

cat <<EOF> /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE=Ethernet

NAME=eth0

#UUID=f6b97d3b-0fee-44a7-8a7b-ef22268ac6c4

DEVICE=ens192

ONBOOT=yes

MASTER=bond0

SLAVE=yes

EOF

[root@www network-scripts]# ifcfg-eth1


cat <<EOF> /etc/sysconfig/network-scripts/ifcfg-eth1

TYPE=Ethernet

NAME=eth1

#UUID=cda4ec94-acaf-4549-82bf-c0080acf21eb

DEVICE=ens224

ONBOOT=yes

MASTER=bond0

SLAVE=yes

EOF

[root@www network-scripts]# ifcfg-bond0


cat <<EOF> /etc/sysconfig/network-scripts/ifcfg-bond1

DEVICE=bond0

BONDING_OPTS=mode=active-backup

TYPE=Bond

BONDING_MASTER=yes

BOOTPROTO=static

NAME=bond0

#UUID=edf218d2-9d71-4c42-bae7-9a4252fc6ecf

ONBOOT=yes

IPADDR=192.168.1.144

NETMASK=255.255.255.0

GATEWAY=192.168.1.1

EOF


4.启动网卡

nmcli connection up eth0

nmcli connection up eth1

nmcli connection up bond0


5.开机自动加载模块到内核


vim /etc/modprobe.d/modprobe.conf

echo 'alias bond1 bonding' >> /etc/modprobe.d/modprobe.conf

echo 'options bond1 miimon=10 mode=1' >> /etc/modprobe.d/modprobe.conf



6.service network restart


7.此命令查看绑定情况

cat /proc/net/bonding/bond0


8.开机启动绑定

/etc/rc.d/rc.local添加如下内容

echo 'ifenslave bond0 eth0 eth1' >> /etc/rc.d/rc.local



9.可以看到调用的是哪几个物理网卡

cat /proc/net/bonding/bond0


10.测试ifdown eth0/eth1

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