Configure Network Bonding
系统环境
[root@test03 ~]
Linux test03 3.10.0-327.el7.x86_64
[root@test03 ~]
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:29:56:69:4d brd ff:ff:ff:ff:ff:ff
inet 192.168.231.13/24 brd 192.168.231.255 scope global eno16777736
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe56:694d/64 scope link
valid_lft forever preferred_lft forever
3: eno33554992: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:56:69:57 brd ff:ff:ff:ff:ff:ff
4: eno50332216: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:56:69:61 brd ff:ff:ff:ff:ff:ff
双网卡绑定目标
一个网卡处于活跃状态，另一个处于备份状态，所有流量都在主链路上处理，当活跃网卡down掉时，启用备份网卡。
设置网卡eno33554992为主网卡(优先处于活跃状态)，eno50332216为辅网卡(备份状态，主网卡链路正常时，辅网卡处于备份状态)。
双网卡绑定步骤
查看物理网卡信息
[root@test03 network-scripts]
DEVICE TYPE STATE CONNECTION
eno16777736 ethernet connected eno16777736
eno33554992 ethernet connected eno33554992
eno50332216 ethernet connected eno50332216
lo loopback unmanaged --
查看网卡连接信息
[root@test03 network-scripts]
NAME UUID TYPE DEVICE
eno50332216 36b38556-4bf8-4ce0-8045-4f5465530f67 802-3-ethernet eno50332216
eno33554992 46831ccf-905b-4361-b5ba-c5448133e288 802-3-ethernet eno33554992
eno16777736 613db14a-2375-4a89-b55a-d2abd8fc65d5 802-3-ethernet eno16777736
删除网卡连接信息
本次Network bonding配置中，需要将eno33554992和eno50332216绑定为bond0，并且设置eno33554992为主网卡，首先需要这两块网卡现有的配置信息，否则team0创建完成后，未删除的网卡配置信息会影响bond0的正常工作。
如果nmcli connectionshow命令输出中无将要进行配置的网卡连接信息，则无需进行删除操作。
[root@test03 network-scripts]
[root@test03 network-scripts]
[root@test03 network-scripts]
[root@test03 network-scripts]
NAME UUID TYPE DEVICE
eno16777736 613db14a-2375-4a89-b55a-d2abd8fc65d5 802-3-ethernet eno16777736
[root@test03 network-scripts]
/etc/sysconfig/network-scripts
[root@test03 network-scripts]
ifcfg-eno16777736 ifcfg-lo
创建bond0
[root@test03 network-scripts]
Connection 'bond0' (dc55d681-0d5a-4de2-8e94-0e5cb2e249c9) successfully added.
-
primary eno33554992：指定主网卡为eno33554992
-
mode active-backup：指定bonding模式为active-backup
-
miimon 100：以毫秒为单位指定 MII 链接监控的频率(默认为0，即关闭此功能；配置miimon参数时，最好从100开始)。
bonding内核模块必须在ifcfg-bondN中的BONDING_OPTS="bonding parameters"中指定，各参数间使用空格分隔，不要在/etc/modprobe.d/bonding.conf和已经弃用的/etc/modprobe.conf文件中指定bonding配置选项。
配置完成后，此时会在/etc/sysconfig/network-scripts目录下生成ifcfg-bond0的配置文件：
[root@test03 network-scripts]
DEVICE=bond0
BONDING_OPTS="miimon=100 mode=active-backup primary=eno33554992"
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=none
IPADDR=192.168.231.200
PREFIX=24
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=bond0
UUID=dc55d681-0d5a-4de2-8e94-0e5cb2e249c9
ONBOOT=yes
创建bond0子接口
将网卡eno33554992和eno50332216创建为bond0的子接口：
[root@test03 network-scripts]
Connection 'bond0-p1' (aaa54dc4-8122-4246-99e8-afd711e3102d) successfully added.
[root@test03 network-scripts]
Connection 'bond0-p2' (11e38097-2273-4565-bf1c-3ce2e2e2a0ea) successfully added.
配置完成后，此时会在/etc/sysconfig/network-scripts目录下生成ifcfg-bond0-p1,ifcfg-bond0-p2的配置文件：
[root@test03 network-scripts]
TYPE=Ethernet
NAME=bond0-p1
UUID=aaa54dc4-8122-4246-99e8-afd711e3102d
DEVICE=eno33554992
ONBOOT=yes
MASTER=bond0
SLAVE=yes
[root@test03 network-scripts]
[root@test03 network-scripts]
TYPE=Ethernet
NAME=bond0-p2
UUID=11e38097-2273-4565-bf1c-3ce2e2e2a0ea
DEVICE=eno50332216
ONBOOT=yes
MASTER=bond0
SLAVE=yes
激活bond0及其子接口
查看当前已激活的网络接口：
[root@test03 network-scripts]
NAME UUID TYPE DEVICE
eno16777736 613db14a-2375-4a89-b55a-d2abd8fc65d5 802-3-ethernet eno16777736
bond0-p2 11e38097-2273-4565-bf1c-3ce2e2e2a0ea 802-3-ethernet eno50332216
bond0-p1 aaa54dc4-8122-4246-99e8-afd711e3102d 802-3-ethernet eno33554992
bond0 dc55d681-0d5a-4de2-8e94-0e5cb2e249c9 bond bond0
如果bond0-p1、bond0-p2、bond0没有激活，可使用下面命令进行激活：
[root@test03 network-scripts]
[root@test03 network-scripts]
[root@test03 network-scripts]
bonding状态查看
[root@test03 network-scripts]
[root@test03 bonding]
bond0
[root@test03 bonding]
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eno33554992 (primary_reselect always)
Currently Active Slave: eno33554992
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eno33554992
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:57
Slave queue ID: 0
Slave Interface: eno50332216
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:61
Slave queue ID: 0
bonding切换测试
首先查看bond0当前状态：
[root@test03 network-scripts]
[root@test03 bonding]
bond0
[root@test03 bonding]
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eno33554992 (primary_reselect always)
Currently Active Slave: eno33554992
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eno33554992
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:57
Slave queue ID: 0
Slave Interface: eno50332216
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:61
Slave queue ID: 0
当前活跃网卡为主网卡：eno33554992，长ping bond0 IP地址：ping 192.168.231.200 -t，网络畅通，现在断开eno33554992的网络连接：
[root@test03 bonding]
Connection 'bond0-p1' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
来自 192.168.231.200 的回复: 字节=32 时间=2ms TTL=64
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
请求超时。
请求超时。
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
发现网络短暂断开后恢复(本次测试环境为虚拟机，真实物理机应该看不到网络断开连接的情况)，此时查看bond0状态为：
[root@test03 bonding]
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eno50332216
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eno50332216
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:61
Slave queue ID: 0
现在恢复eno33554992的网络连接：
[root@test03 bonding]
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)
来自 192.168.231.200 的回复: 字节=32 时间=2ms TTL=64
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
请求超时。
请求超时。
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
来自 192.168.231.200 的回复: 字节=32 时间<1ms TTL=64
查看bond0工作状态为:
[root@test03 bonding]
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eno33554992 (primary_reselect always)
Currently Active Slave: eno33554992
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eno50332216
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:61
Slave queue ID: 0
Slave Interface: eno33554992
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:0c:29:56:69:57
Slave queue ID: 0
