从libvirt / KVM主机，我想获得通过桥接适配器连接到网络的正在运行的虚拟机的IP地址 .
重要提示：我知道如何通过libvirt / kvm默认NAT网络连接虚拟机时获取IP地址 - 这就是互联网上针对此问题描述的大多数解决方案 .
但我无法找到通过网桥连接的虚拟机的IP地址 .
从虚拟机内部：
root@zvm:~# ifconfig -a
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.133 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::5054:ff:fed0:1e27 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:d0:1e:27 txqueuelen 1000 (Ethernet)
RX packets 36 bytes 18540 (18.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 37 bytes 4128 (4.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 334 bytes 24670 (24.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 334 bytes 24670 (24.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
网络正在运行：
root@zvm:~# curl www.google.com
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A HREF="http://www.google.com.au/?gfe_rd=cr&dcr=0&ei=u-uJWqTyJPLc8weU9JHABg">here</A>.
</BODY></HTML>
root@zvm:~# curl www.google.com
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A HREF="http://www.google.com.au/?gfe_rd=cr&dcr=0&ei=ge6JWv_0Co7r8wf6gKGwBQ">here</A>.
</BODY></HTML>
root@zvm:~#
从虚拟机主机：
(venv2.7) ubuntu@kvmhost:/opt/foo$ arp -n
Address HWtype HWaddress Flags Mask Iface
192.168.122.35 ether 52:54:00:61:1b:f2 C virbr0
192.168.122.210 (incomplete) virbr0
192.168.1.1 ether 30:b5:c2:08:91:e3 C br0
192.168.122.10 ether 52:54:00:ee:c8:2a C virbr0
192.168.122.80 ether 52:54:00:18:93:6e C virbr0
192.168.1.126 ether ac:87:a3:00:b1:63 C br0
192.168.122.21 ether 52:54:00:5f:3a:70 C virbr0
192.168.122.182 (incomplete) virbr0
192.168.1.1 (incomplete) enp3s0
192.168.122.32 (incomplete) virbr0
192.168.122.112 ether 52:54:00:82:7d:75 C virbr0
192.168.122.183 ether 52:54:00:a4:eb:ba C virbr0
192.168.122.36 ether 52:54:00:b1:e4:83 C virbr0
192.168.122.139 (incomplete) virbr0
192.168.122.209 (incomplete) virbr0
192.168.1.140 (incomplete) br0
(venv2.7) ubuntu@kvmhost:/opt/foo$
使用ifconfig：
(venv2.7) ubuntu@kvmhost:/opt/foo$ ifconfig -a
br0 Link encap:Ethernet HWaddr d2:d6:16:58:19:e0
inet addr:192.168.1.139 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::d0d6:16ff:fe58:19e0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:576693 errors:0 dropped:0 overruns:0 frame:0
TX packets:381883 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:399735319 (399.7 MB) TX bytes:39484740 (39.4 MB)
enp3s0 Link encap:Ethernet HWaddr fc:aa:14:a9:95:bf
inet addr:192.168.1.140 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:577654 errors:0 dropped:153 overruns:0 frame:0
TX packets:384437 errors:1 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:407978078 (407.9 MB) TX bytes:39670335 (39.6 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:814 errors:0 dropped:0 overruns:0 frame:0
TX packets:814 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:168110 (168.1 KB) TX bytes:168110 (168.1 KB)
virbr0 Link encap:Ethernet HWaddr 52:54:00:22:5c:7b
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:901 errors:0 dropped:0 overruns:0 frame:0
TX packets:536 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:76426 (76.4 KB) TX bytes:175557 (175.5 KB)
virbr0-nic Link encap:Ethernet HWaddr 52:54:00:22:5c:7b
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vnet0 Link encap:Ethernet HWaddr fe:54:00:d0:1e:27
inet6 addr: fe80::fc54:ff:fed0:1e27/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:82 errors:0 dropped:0 overruns:0 frame:0
TX packets:325 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7776 (7.7 KB) TX bytes:69359 (69.3 KB)
wlp2s0 Link encap:Ethernet HWaddr d0:7e:35:69:cf:b2
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
(venv2.7) ubuntu@kvmhost:/opt/foo$
来自主机的虚拟机的XML转储：
(venv2.7) ubuntu@kvmhost:/opt/foo$ virsh dumpxml zvm
<domain type='kvm' id='41'>
<name>zvm</name>
<uuid>4e544a34-5a31-43ac-a2af-dbac612110d4</uuid>
<metadata>
<kvirt:info xmlns:kvirt="kvirt">
<kvirt:creationdate>18-02-2018 21:05</kvirt:creationdate>
<kvirt:profile>zesty</kvirt:profile>
<kvirt:template>zesty-server-cloudimg-amd64.img</kvirt:template>
<kvirt:plan>kvirt</kvirt:plan>
</kvirt:info>
</metadata>
<memory unit='KiB'>1048576</memory>
<currentMemory unit='KiB'>1048576</currentMemory>
<vcpu placement='static'>1</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-i440fx-2.5'>hvm</type>
<boot dev='hd'/>
<boot dev='cdrom'/>
<bootmenu enable='yes'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='allow'>Westmere</model>
<feature policy='require' name='vmx'/>
</cpu>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/kvm-spice</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/zvm_1.img'/>
<backingStore type='file' index='1'>
<format type='qcow2'/>
<source file='/var/lib/libvirt/images/zesty-server-cloudimg-amd64.img'/>
<backingStore/>
</backingStore>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/zvm.ISO'/>
<backingStore/>
<target dev='hdd' bus='ide'/>
<readonly/>
<alias name='ide0-1-1'/>
<address type='drive' controller='0' bus='1' target='0' unit='1'/>
</disk>
<controller type='usb' index='0'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<controller type='ide' index='0'>
<alias name='ide'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:d0:1e:27'/>
<source bridge='br0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/2'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/2'>
<source path='/dev/pts/2'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<input type='tablet' bus='usb'>
<alias name='input0'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' port='5900' autoport='yes' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='cirrus' vram='16384' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memballoon>
</devices>
<seclabel type='dynamic' model='apparmor' relabel='yes'>
<label>libvirt-4e544a34-5a31-43ac-a2af-dbac612110d4</label>
<imagelabel>libvirt-4e544a34-5a31-43ac-a2af-dbac612110d4</imagelabel>
</seclabel>
</domain>
(venv2.7) ubuntu@kvmhost:/opt/foo$
1 回答
vm如何获取IP地址？如果它是DHCP - 您应该转到DHCP数据，并查找接口的地址（即：52：54：00：d0：1e：27） .
您可以尝试以下方法：
您可以在/var/lib/libvirt/dnsmasq/default.conf中查看dhcp-hosts文件，以查找此文件的位置 .
编辑：
如果是桥接网络，则主机无法直接知道访客的IP . 您可以尝试一些方法，例如：
在主机的arp输出中查找MAC地址 .
ssh到guest虚拟机并使用ifconfig打印IP .