我正在尝试使用 vagrant 在本地笔记本上设置特定的虚拟机集群。我有一台 Win10 Pro，以 HyperV 作为主机。不幸的是，我无法更改它，因此我想在 HyperV 上创建一个 Linux VM（我称之为“嵌套”），并启用嵌套虚拟化。然后在“嵌套”Linux 上，我想使用 KVM/libvirt 创建多个 VM。为简单起见，示例代码中只有一个（“guest”）。
假设是在 Windows Host 上进行最小设置并通过 Vagrant 配置所有内容。但事实上这并不那么容易，因为 HyperV 提供程序不允许在公共和私有接口中设置静态 IP。
目标是创建一个私有网络（例如 10.75.10.0/24）并为每个虚拟机分配一个静态 IP 地址，并允许它们相互看到。我部分实现了这一点。我的虚拟机可以互相 ping 通，但嵌套的虚拟机除外（“guest1”<->“guest2”，“guest”<->Host，Host<->Nested）。guest<->nested 在两个方向上都看不到对方。
要求： 1. 启用 HyperV 的 Win10 2. 用户需要属于 HyperV 管理组
我使用 PowerShell 脚本（Adm）在主机中创建了一个内部交换机：
New-VMSwitch –SwitchName “NAT-Switch” –SwitchType Internal –Verbose
Get-NetAdapter
#put the proper index in the next line
New-NetIPAddress –IPAddress 10.75.0.1 -PrefixLength 24 -InterfaceIndex 16 –Verbose
New-NetNat –Name NATNetwork –InternalIPInterfaceAddressPrefix 10.75.0.0/24 –Verbose
Get-VM | Get-VMNetworkAdapter | Connect-VMNetworkAdapter –SwitchName “NAT-Switch”
ipconfig：
Ethernet adapter vEthernet (NAT-Switch):
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Hyper-V Virtual Ethernet Adapter #5
Physical Address. . . . . . . . . : XXXX
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : XXXX
IPv4 Address. . . . . . . . . . . : 10.75.10.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
这是我的项目结构：
./nested
./nested/Vagrantfile
./provision.sh
./Vagrantfile
猫Vagrantfile
$bridge_script = <<EOF
ifconfig eth0 10.75.10.10 netmask 255.255.255.0 up
route add default gw 10.75.10.1
EOF
Vagrant.configure("2") do |config|
config.vm.box = "generic/ubuntu1804"
config.vm.define "nested"
config.vm.hostname = "nested"
config.vm.provider "hyperv" do |hv|
hv.cpus = "2"
hv.memory = "2048"
hv.maxmemory = "2048"
hv.enable_virtualization_extensions = true
hv.differencing_disk = true
end
config.vm.network "public_network", :bridge => "NAT-Switch", auto_config: false
config.vm.provision :"shell", run: "always", inline: $bridge_script
config.vm.provision :file, source: "nested", destination: "~/"
config.vm.provision :shell, :path => "provision.sh"
config.vm.provision :shell, inline: "sudo -i -u vagrant bash -c 'cd ~vagrant/nested; vagrant up --provider=libvirt'"
end
猫规定.sh
apt-get update
apt-get install -y bridge-utils qemu-kvm virtinst libvirt-bin qemu-utils qemu ebtables dnsmasq vagrant vagrant-libvirt
usermod -aG libvirt-qemu,libvirt vagrant
systemctl enable libvirt-bin
systemctl start libvirt-bin
vagrant plugin install vagrant-libvirt
vagrant plugin list
猫嵌套/Vagrantfile
Vagrant.configure("2") do |config|
config.vm.box = "generic/ubuntu1604"
config.vm.define "guest"
config.vm.network "public_network", ip: "10.75.10.11", netmask: "24"
config.vm.hostname = "guest"
config.vm.provider :libvirt do |libvirt|
libvirt.uri = 'qemu+unix:///system'
libvirt.cpus = "1"
libvirt.memory = "1024"
end
end
运行后：
vagrant --provider=hyperv
我得到以下结果：
嵌套虚拟机：
vagrant@nested:~$ ip 地址
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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:15:5d:38:01:5c brd ff:ff:ff:ff:ff:ff
inet 10.75.10.10/24 brd 10.75.10.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::215:5dff:fe38:15c/64 scope link
valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:6f:8e:84 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:6f:8e:84 brd ff:ff:ff:ff:ff:ff
5: virbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:6c:f9:2f brd ff:ff:ff:ff:ff:ff
inet 192.168.121.1/24 brd 192.168.121.255 scope global virbr1
valid_lft forever preferred_lft forever
6: virbr1-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr1 state DOWN group default qlen 1000
link/ether 52:54:00:6c:f9:2f brd ff:ff:ff:ff:ff:ff
7: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master virbr1 state UNKNOWN group default qlen 1000
link/ether fe:54:00:bc:01:c9 brd ff:ff:ff:ff:ff:ff
8: macvtap0@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 500
link/ether 52:54:00:a7:eb:55 brd ff:ff:ff:ff:ff:ff
vagrant@nested:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.75.10.1 0.0.0.0 UG 0 0 0 eth0
10.75.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.121.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr1
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
对于 VM1：
vagrant@guest:~$ ip 地址
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 52:54:00:bc:01:c9 brd ff:ff:ff:ff:ff:ff
inet 192.168.121.45/24 brd 192.168.121.255 scope global eth0
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 52:54:00:a7:eb:55 brd ff:ff:ff:ff:ff:ff
inet 10.75.10.11/24 brd 10.75.10.255 scope global eth1
valid_lft forever preferred_lft forever
vagrant@guest:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.121.1 0.0.0.0 UG 0 0 0 eth0
10.75.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.121.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
我希望有人能重现这个状态。我提供了 99% 自动化的脚本。
问题是：我该如何改进此设置以使嵌套虚拟机可见？操作接口寻址和路由会导致 vagrant 长时间中断。我也可以改进这一点吗？有没有更好的方法在嵌套虚拟机中设置网络？