CentOS配置bond

centos6.x 配置bond

1、物理網卡配置

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網卡配置

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下使用雙網卡配置bond0
• 注意：centos6 bond配置不需要在/etc/modprobe中定義bond
• 直接在網卡中定義BONDING_OPTS 即可

重啟網卡

service network restart

3、查看bond0網卡狀態

cat /proc/net/bonding/bond0

centos7.x網卡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網絡接口配置文件可以在第2步的第一條命令后加上 ip4 "ip地址" gw4 "網關地址"
[root@localhost network-scripts]# nmcli connection add type bond ifname bond0 mode 1 ip4 192.168.92.20/24 gw4 192.168.92.2

# 將網卡`eno33554960`與`eno50332184`綁定到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) –輪詢模式，負載均衡（bond默認的模式）
• active-backup (1) –主備模式（常用）
• balance-xor (2)
• broadcast (3）
• 802.3ad (4) –聚合模式
• balance-tlb (5)
• balance-alb (6)

2、修改bond0網卡配置

[root@localhost network-scripts]# vim ifcfg-bond-bond0
DEVICE=bond0
BONDING_OPTS=mode=active-backup
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=static    # 將dhcp改為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   # 配置掩碼也可以使用NETMASK=255.255.255.0
GATEWAY=192.168.92.2    # 配置網關

3、重啟網絡，驗證配置結果

查看網卡信息

[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主備模式
PrimarySlave:None
CurrentlyActiveSlave: eno33554960   # 當前激活的網卡eno33554960
MII Status: up
MII PollingInterval(ms):100
UpDelay(ms):0
DownDelay(ms):0
SlaveInterface: eno33554960 # bond0組內的網卡
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組內的網卡
MII Status: up
Speed:1000Mbps
Duplex: full
LinkFailureCount:0
Permanent HW addr:00:0c:29:07:2c:9a
Slave queue ID:0

4、刪除 bond 設備

查看網絡設備

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

刪除bond網絡設備

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

• 直接刪除bond0，會提示無權限。
• 可以通過bonding_masters文件刪除bond設備,但是bonding_masters文件是無法直接修改的。
• echo 后面的 ‘-’ 是刪除設備，‘+’是增加設備