CentOS配置bond

centos6.x 配置bond

1、物理网卡配置

ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
ifcfg-eth1
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
2、bond0网卡配置

ifcfg-bond0
DEVICE=bond0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.123.185.11
NETMASK=255.255.255.128
NETWORK=10.123.185.0
GATEWAY=10.123.185.1
DNS1=8.8.8.8
IPV6INIT=yes
IPV6ADDR=2408::f03e/120
IPV6_DEFAULTGW=2408::f001
BONDING_OPTS="mode=0 miimon=100"
centos6.x下使用双网卡配置bond0

注意：centos6 bond配置不需要在/etc/modprobe中定义bond

直接在网卡中定义BONDING_OPTS 即可

重启网卡
service network restart
3、查看bond0网卡状态
cat /proc/net/bonding/bond0

centos7.x网卡bond配置

1、使用nmcli命令配置bond

# 生成bond配置文件
[root@localhost network-scripts]# nmcli connection add type bond ifname bond0 mode 1

# 如果不想修改bond网络接口配置文件可以在第2步的第一条命令后加上 ip4 "ip地址" gw4 "网关地址"
[root@localhost network-scripts]# nmcli connection add type bond ifname bond0 mode 1 ip4 192.168.92.20/24 gw4 192.168.92.2

# 将网卡`eno33554960`与`eno50332184`绑定到bond0
[root@localhost network-scripts]# nmcli connection add type bond-slave ifname eno33554960 master bond0
[root@localhost network-scripts]# nmcli connection add type bond-slave ifname eno50332184 master bond0

# 查看生成的配置文件
[root@localhost network-scripts]# ls ifcfg-bond-*
ifcfg-bond-bond0 ifcfg-bond-slave-eno33554960 ifcfg-bond-slave-eno50332184

bond的mode如下：

balance-rr (0) –轮询模式，负载均衡（bond默认的模式）
active-backup (1) –主备模式（常用）
balance-xor (2)
broadcast (3）
802.3ad (4) –聚合模式
balance-tlb (5)
balance-alb (6)

2、修改bond0网卡配置

[root@localhost network-scripts]# vim ifcfg-bond-bond0
DEVICE=bond0
BONDING_OPTS=mode=active-backup
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=static    # 将dhcp改为static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=bond-bond0
UUID=af2d6662-608c-4f5d-8018-1984cc3d87ef
ONBOOT=yes
IPADDR=192.168.92.20    # 配置IP地址
PREFIX=24   # 配置掩码也可以使用NETMASK=255.255.255.0
GATEWAY=192.168.92.2    # 配置网关

3、重启网络，验证配置结果

查看网卡信息

[root@localhost network-scripts]# ip addr show
1: lo:<LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno16777736:<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:07:2c:86 brd ff:ff:ff:ff:ff:ff
inet 192.168.92.11/24 brd 192.168.92.255 scope global eno16777736
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe07:2c86/64 scope link
valid_lft forever preferred_lft forever
3: eno33554960:<BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
link/ether 00:0c:29:07:2c:90 brd ff:ff:ff:ff:ff:ff
4: eno50332184:<BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
link/ether 00:0c:29:07:2c:90 brd ff:ff:ff:ff:ff:ff
31: bond0:<BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 00:0c:29:07:2c:90 brd ff:ff:ff:ff:ff:ff
inet 192.168.92.20/24 brd 192.168.92.255 scope global bond0
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe07:2c90/64 scope link
valid_lft forever preferred_lft forever

查看bond信息

[root@localhost network-scripts]# cat /proc/net/bonding/bond0
EthernetChannelBondingDriver: v3.7.1(April27,2011)
BondingMode: fault-tolerance (active-backup)    # bond主备模式
PrimarySlave:None
CurrentlyActiveSlave: eno33554960   # 当前激活的网卡eno33554960
MII Status: up
MII PollingInterval(ms):100
UpDelay(ms):0
DownDelay(ms):0
SlaveInterface: eno33554960 # bond0组内的网卡
MII Status: up
Speed:1000Mbps
Duplex: full
LinkFailureCount:0
Permanent HW addr:00:0c:29:07:2c:90
Slave queue ID:0
SlaveInterface: eno50332184 # bond0组内的网卡
MII Status: up
Speed:1000Mbps
Duplex: full
LinkFailureCount:0
Permanent HW addr:00:0c:29:07:2c:9a
Slave queue ID:0

4、删除 bond 设备

查看网络设备

[root@localhost ~]# ls /sys/class/net/
bond0 bond1 bonding_masters eno16777736 eno33554960 eno50332184 eno67109408 eno83886632 lo

删除bond网络设备

[root@localhost ~]# echo -bond0 >/sys/class/net/bonding_masters

直接删除bond0，会提示无权限。
可以通过bonding_masters文件删除bond设备,但是bonding_masters文件是无法直接修改的。
echo 后面的 ‘-’ 是删除设备，‘+’是增加设备