centos7和centos6的bond0配置

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本文详细介绍了在CentOS7和CentOS6中如何通过两个网卡设置bond0，实现主备模式，确保网络连接的高可用性和安全性。步骤包括启用NetworkManager，创建和配置bond0，设置网卡作为slave，以及激活和管理bond0。

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centos7和centos6的bond0配置

通过两个网卡设置主备模式，已达到更加安全的措施。当一块网卡坏时，另一块网卡会自动补充上去，以此来实现热备的效果
centos7设置bond 要开启图形化管理工具NetworkManager
1：加2块网卡（最好相同的）
2：设置bond0
切换到配置目录查看：

cd /etc/sysconfig/network-scripts/

[root@localhost network-scripts]# nmcli connection show

[root@localhost network-scripts]# nmcli connection show

NAME                UUID                                  TYPE            DEVICE

ens38               66a3bea1-4d11-3369-ab1f-737ae0a38604  802-3-ethernet  ens38  

mage243             c96bc909-188e-ec64-3a96-6a90982b08ad  802-3-ethernet  ens33  

virbr0              af0712a1-1bcb-44d7-92b2-445e0e90790e  bridge          virbr0

Wired connection 1  c3bc0416-5ac8-31f4-9fb4-fc15bba98416  802-3-ethernet  --     

Wired connection 2  a960b53a-dbfa-33f4-8a4a-d3c1b8848bb3  802-3-ethernet  --     

mage247             175a7d99-4ca2-4c1c-b641-18161b3a3790  802-3-ethernet  --

使用nmcli connection show此命令查看绑定的网卡信息

3：设置bond0

[root@localhost network-scripts]# nmcli connection add con-name bond0 ifname bond0 type bond mode active-backup

#创建一个bond0类型也是bond0，名字也是bond0

[root@localhost network-scripts]# nmcli connection add con-name bond0 ifname bond0 type bond mode active-backup

在当前目录下创建一个bond0；

[root@localhost network-scripts]# ls
ifcfg-bond0     ifdown-ipv6      ifup-bnep    ifup-sit
ifcfg-ens33     ifdown-isdn      ifup-eth     ifup-Team
ifcfg-ens37     ifdown-post      ifup-ib      ifup-TeamPort
ifcfg-lo        ifdown-ppp       ifup-ippp    ifup-tunnel

4：设置两个网卡

增加slave的方案给两块新加的网卡

[root@localhost network-scripts]# nmcli connection add con-name slave-38 ifname ens38 type ethernet master bond0 Connection 'slave-38' (97708606-56ac-48aa-9014-c23a376c2379) successfully added.

[root@localhost network-scripts]# nmcli connection add con-name slave-39 ifname ens39 type ethernet master bond0 Connection 'slave-39' (608dc1a0-9407-45be-a720-4c415b4b8488) successfully added.

#名字为slave-38，类型为ens38，绑定的网卡名为bond0，slave-38的UUID号

[root@localhost network-scripts]# nmcli connection add con-name slave-38 ifname ens38 type ethernet master bond0 Connection 'slave-38' (97708606-56ac-48aa-9014-c23a376c2379) successfully added.

[root@localhost network-scripts]# nmcli connection add con-name slave-39 ifname ens39 type ethernet master bond0 Connection 'slave-39' (608dc1a0-9407-45be-a720-4c415b4b8488) successfully added.

5：配置bond0

[root@localhost network-scripts]# nmcli connection modify bond0 ipv4.method manual connection.autoconnect yes ipv4.addresses 20.20.20.20/24 ipv4.dns 8.8.8.8 ipv4.gateway 20.20.20.1

#配置详情：名字bond0，ipv4.addresses 设置ip，ipv4.dns设置dns，ipv4.gateway设置网关

[root@localhost network-scripts]# nmcli connection modify bond0 ipv4.method manual connection.autoconnect yes ipv4.addresses 20.20.20.20/24 ipv4.dns 8.8.8.8 ipv4.gateway 20.20.20.1

[root@localhost network-scripts]# cat ifcfg-bond0 
DEVICE=bond0
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=bond0
UUID=5faa222a-7122-48c7-bfdd-cbca4a20e537
ONBOOT=yes
DNS1=8.8.8.8
BONDING_OPTS=mode=active-backup
IPADDR=20.20.20.20
PREFIX=24
GATEWAY=20.20.20.1
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes

6：激活bond0

[root@localhost network-scripts]# nmcli connection up bond0

root@localhost network-scripts]# nmcli connection up bond0

禁用及删除：

[root@localhost network-scripts]# nmcli connection down bond0 #禁用

[root@localhost network-scripts]# nmcli connection delete bond0

[root@localhost network-scripts]# nmcli connection delete slave-39

[root@localhost network-scripts]# nmcli connection delete slave-34

[root@localhost network-scripts]# nmcli connection down bond0    #禁用

[root@localhost network-scripts]# nmcli connection delete bond0  #删除

[root@localhost network-scripts]# nmcli connection delete slave-39

[root@localhost network-scripts]# nmcli connection delete slave-34

centos6配置bond0
1：添加2块网卡
2：创建bond文件

[root@localhost network-scripts]# cp ifcfg-eth0 ifcfg-bond0

3：修改bond0文件：

[root@localhost network-scripts]# vim ifcfg-bond0

DEVICE=bond0TYPE=EthernetONBOOT=yesNM_CONTROLLED=noDEFROUTE=yesPEERDNS=yesPEERROUTES=yesIPV4_FAILURE_FATAL=yesIPV6INIT=noNAME="System eth1"BONDING_OPTS="miimon=100 mode=1"IPADDR=4.4.4.4NETMASK=255.255.255.0

4：配置网卡文件：

[root@localhost network-scripts]# vim ifcfg-eth2 DEVICE=eth2TYPE=EthernetONBOOT=yesSLAVE=yesMASTER=bond0NM_CONTROLLED=no

[root@localhost network-scripts]# vim ifcfg-eth3 DEVICE=eth3TYPE=EthernetONBOOT=yesSLAVE=yesMASTER=bond0NM_CONTROLLED=no

5：重启网络服务

[root@localhost network-scripts]# service network restart