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slm
Asked: 2018-10-12 21:35:54 +0800 CST

我想在 VirtualBox 的 CentOS 7 中使用 2 个 eth 设备设置一个 bond0 接口？

  • 772

我想在 VirtualBox 中设置一个 CentOS 7.x 虚拟机，以便我可以尝试绑定接口。如何设置此 VM，使其具有以下接口：

  • eth1（专用网络 - 192.168.56.101）
  • eth2（从属bond0）
  • eth3（从属bond0）
  • 债券 0（使用 LACP）

使用 Vagrant 来促进设置会很有帮助，因此更容易复制。

注意：我想手动进行设置，所以请展示一个禁用 NetworkManager 的示例。

networking centos

1 个回答

  1. Best Answer

    设置流浪者

    首先，您可以使用以下内容Vagrantfile来构建您的 VM：

    $ cat Vagrantfile
Vagrant.configure("2") do |config|

  config.vm.box = "centos/7"
  config.vm.hostname="box-101"
  config.ssh.forward_x11 = true

  config.vm.network "private_network", ip: "192.168.56.101"
  config.vm.network "public_network", bridge: "en0: Wi-Fi (Wireless)", auto_config: false
  config.vm.network "public_network", bridge: "en0: Wi-Fi (Wireless)", auto_config: false

  config.vm.provider "virtualbox" do |vb|
    vb.memory = "2048"
  end

  config.vm.provision "shell", inline: <<-SHELL
    yum install -y git vim socat tcpdump wget sysstat
    yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
  SHELL
end

    注意：我使用的 NICpublic_network是我的 Macbookbridge: "en0: Wi-Fi (Wireless)"设备。如果您在其他任何东西上执行此操作，则需要将其更改为运行 Vagrant/VirtualBox 的主机系统上的适当 NIC。

    上面的文件包含 3 个 NIC，它们会在 VM 启动时产生。启动 VM 和 SSH 进入其中：

    $ vagrant up
$ vagrant ssh

    初始网络设置

    如果我们查看生成的网络，我们将看到以下内容：

    $ ip a l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 52:54:00:c0:42:d5 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 brd 10.0.2.255 scope global noprefixroute dynamic eth0
       valid_lft 85127sec preferred_lft 85127sec
    inet6 fe80::5054:ff:fec0:42d5/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:ce:88:39 brd ff:ff:ff:ff:ff:ff
    inet 192.168.56.101/24 brd 192.168.56.255 scope global noprefixroute eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:fece:8839/64 scope link
       valid_lft forever preferred_lft forever
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:d7:c2:ec brd ff:ff:ff:ff:ff:ff
    inet6 fe80::df68:9ee2:4b5:ad5f/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:59:b0:69 brd ff:ff:ff:ff:ff:ff

    以及对应的路由：

    $ ip r
default via 10.0.2.2 dev eth0 proto dhcp metric 100
10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15 metric 100
192.168.56.0/24 dev eth1 proto kernel scope link src 192.168.56.101 metric 102

    禁用网络管理器

    对于这个 VM，我们将禁用 NetworkManager，这样我们就可以手动配置绑定接口 + 从属。

    $ for i in NetworkManager-dispatcher NetworkManager NetworkManager-wait-online; do
    systemctl disable $i && systemctl stop $i
  done

    确认 NM 现在已禁用：

    $ systemctl list-unit-files |grep NetworkManager
NetworkManager-dispatcher.service             disabled
NetworkManager-wait-online.service            disabled
NetworkManager.service                        disabled

    设置绑定接口

    首先，我们将构建 3 个文件。1个用于bond0接口，1个用于我们将用作从属的2个接口（eth2和eth3）。

    ifcfg-债券0

    $ cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
Type=Bond
NAME=bond0
BONDING_MASTER=yes
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.1.232
PREFIX=24
GATEWAY=192.168.1.2
BONDING_OPTS="mode=4 miimon=100 lacp_rate=1"

    注意： mode=4是（802.3ad）又名。LACP。miimon=100是 100 毫秒的检查间隔，并且lacp_rate=1是来自合作伙伴的快速 TX。您可以通过此命令查看绑定模块接受的所有参数modinfo bonding。

    eth2

    $ cat /etc/sysconfig/network-scripts/ifcfg-eth2
DEVICE=eth2
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
IPV6INIT=no
MASTER=bond0
SLAVE=yes

    eth3

    $ cat /etc/sysconfig/network-scripts/ifcfg-eth3
DEVICE=eth3
TYPE=Ethernet
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
IPV6INIT=no
MASTER=bond0
SLAVE=yes

    注意：在上面我静态地为bond0接口分配IP地址192.168.1.232和网关192.168.1.2。您需要将这些更改为适合您情况的内容。

    启动界面

    到目前为止，启动网络最简单的方法是重新启动网络服务：

    $ systemctl restart network

    如果我们看一下接口和路由：

    $ ip a l
..
..
4: eth2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP group default qlen 1000
    link/ether 08:00:27:d7:c2:ec brd ff:ff:ff:ff:ff:ff
5: eth3: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP group default qlen 1000
    link/ether 08:00:27:d7:c2:ec brd ff:ff:ff:ff:ff:ff
6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 08:00:27:d7:c2:ec brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.232/24 brd 192.168.1.255 scope global bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:fed7:c2ec/64 scope link
       valid_lft forever preferred_lft forever

$ ip r
default via 10.0.2.2 dev eth0
10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev eth1 scope link metric 1003
169.254.0.0/16 dev bond0 scope link metric 1006
192.168.1.0/24 dev bond0 proto kernel scope link src 192.168.1.232
192.168.56.0/24 dev eth1 proto kernel scope link src 192.168.56.101

    粘合细节

    我们还可以查看绑定接口的设备以获取有关接口状态的更多详细信息：

    $ cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: fast
Min links: 0
Aggregator selection policy (ad_select): stable
System priority: 65535
System MAC address: 08:00:27:d7:c2:ec
Active Aggregator Info:
    Aggregator ID: 1
    Number of ports: 1
    Actor Key: 9
    Partner Key: 1
    Partner Mac Address: 00:00:00:00:00:00

Slave Interface: eth2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:d7:c2:ec
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: churned
Actor Churned Count: 0
Partner Churned Count: 1
details actor lacp pdu:
    system priority: 65535
    system mac address: 08:00:27:d7:c2:ec
    port key: 9
    port priority: 255
    port number: 1
    port state: 207
details partner lacp pdu:
    system priority: 65535
    system mac address: 00:00:00:00:00:00
    oper key: 1
    port priority: 255
    port number: 1
    port state: 3

Slave Interface: eth3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:59:b0:69
Slave queue ID: 0
Aggregator ID: 2
Actor Churn State: churned
Partner Churn State: churned
Actor Churned Count: 1
Partner Churned Count: 1
details actor lacp pdu:
    system priority: 65535
    system mac address: 08:00:27:d7:c2:ec
    port key: 9
    port priority: 255
    port number: 2
    port state: 199
details partner lacp pdu:
    system priority: 65535
    system mac address: 00:00:00:00:00:00
    oper key: 1
    port priority: 255
    port number: 1
    port state: 3

    验证外部连接

    下面您可以看到对我在网络中的另一个盒子上运行的 bond0 的 IP 地址的 ping 输出。一旦我们重新启动network服务，我们可以看到它变得可以访问：

    $ ping 192.168.1.232
From 192.168.1.10 icmp_seq=7414 Destination Host Unreachable
From 192.168.1.10 icmp_seq=7415 Destination Host Unreachable
64 bytes from 192.168.1.232: icmp_seq=7416 ttl=64 time=886 ms
64 bytes from 192.168.1.232: icmp_seq=7417 ttl=64 time=3.58 ms
64 bytes from 192.168.1.232: icmp_seq=7418 ttl=64 time=3.52 ms
64 bytes from 192.168.1.232: icmp_seq=7419 ttl=64 time=3.46 ms
64 bytes from 192.168.1.232: icmp_seq=7420 ttl=64 time=3.15 ms
64 bytes from 192.168.1.232: icmp_seq=7421 ttl=64 time=3.50 ms

    重启提示

    在 CentOS 7.x 上，bond0 接口在引导期间正常启动似乎存在错误/问题。此问题的解决方法是将以下内容添加到：

     $ echo "ifup bond0" >> /etc/rc.d/rc.local
 $ chmod +x /etc/rc.d/rc.local

    这将保证bond0在引导期间正确启动接口。

    参考

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