how to know the IP address of a VM

[jluc2808]

Hello,
i have installed a VM which is build on a debian-x86.7-1 iso
the VM is running and i could enter the console SPICE to run android.

as i would like to install HA-Bridge inside a VM , i want to enter a SSL session on that VM , where coul I find the IP address ?

surely a noob question ?

thanks

 

[dcsapak]

you configure the ip inside the vm so you can look there
from outside that is not so easy but maybe you can find out with 'arp -a' provided the host and the guest are in the same subnet and have communicated in the recent past

 

[Romsch]

where you want to see the ip address? inside the vm? try "ifconfig" in a console, or "ip a". If "ifconfig" not works, install it with "apt-get install net-tools"
outside the vm via browser? activate "qemu agent" at options in the vm config, and install inside the vm "apt-get install qemu-guest-agent" - then the ip will be shown outside the vm at the browser in the proxmox gui

 

[jluc2808]

from inside : I'm surely completly noob , but i don't find where is stored the IP inside the VM , when i look at the material , i get only the mac address under IP ?
from outside ???? where i could type this command line (from SSL to proxmox ?)
best regards

 

[jluc2808]

where you want to see the ip address? inside the vm? try "ifconfig" in a console, or "ip a". If "ifconfig" not works, install it with "apt-get install net-tools"
outside the vm via browser? activate "qemu agent" at options in the vm config, and install inside the vm "apt-get install qemu-guest-agent" - then the ip will be shown outside the vm at the browser in the proxmox gui

thanks for this reply , the pb is , when i start the VM, i enter inside android display, the only app i could use is terminal-emulator adi have setted super-privileged , when i want to use
- apt-get i get unknow command
- if i make an su root , idem
- if i make su -s apt-get the response not permitted

sorry again if this is obvious

 

[Romsch]

Inside the vm - do you have a terminal in the vm? and are you user root? there you will need a command line e.g. root@debiantest1:~#
If you have a graphical installation with debian, you should open a terminal to get the command line tool. And there you enter "ip a" and it should show you the ip configuration.
You can also install at the terminal the qemu-guest-agent inside the vm, this is necessary to "passthrough" the ip adress to the proxmox gui - this you install with "apt-get install qemu-guest-agent" also in the vm at the terminal. Dont forget to activate qemu guest agent at the vm - klick in the proxmox gui on the vm, then options and activate qemu agent. Shutdown vm and start it new - the ip should be shown at the proxmox gui. Do not reboot, that takes no effect of changing options of a vm.

best regards, roman

 

[jluc2808]

i got the IP form the terminal-emulator with ip-a ==> 192.168.1.52
but i 'm unable to install something (sudo apt-get install xx) or to connect with SSL

so i decide to follow your recommandation
when i want to install qemu-guest-agent i get an error (on the proxmox system)

admin@proxmox:~$ sudo apt-get install qemu-guest-agent
[sudo] password for admin:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
qemu-guest-agent
0 upgraded, 1 newly installed, 0 to remove and 29 not upgraded.
1 not fully installed or removed.
Need to get 315 kB of archives.
After this operation, 1,270 kB of additional disk space will be used.
Get:1 http://ftp.fr.debian.org/debian stretch/main amd64 qemu-guest-agent amd64 1:2.8+dfsg-6+deb9u5 [315 kB]
Fetched 315 kB in 0s (1,400 kB/s)
Selecting previously unselected package qemu-guest-agent.
(Reading database ... 54807 files and directories currently installed.)
Preparing to unpack .../qemu-guest-agent_1%3a2.8+dfsg-6+deb9u5_amd64.deb ...
Unpacking qemu-guest-agent (1:2.8+dfsg-6+deb9u5) ...
Setting up libvirt-daemon-system (3.0.0-4+deb9u3) ...
Job for libvirtd.service failed because the control process exited with error code.
See "systemctl status libvirtd.service" and "journalctl -xe" for details.
invoke-rc.d: initscript libvirtd, action "start" failed.
● libvirtd.service - Virtualization daemon
Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Fri 2019-04-12 12:54:01 CEST; 9ms ago
Docs: man:libvirtd(8)
http://libvirt.org
Process: 10571 ExecStart=/usr/sbin/libvirtd $libvirtd_opts (code=exited, status=6)
Main PID: 10571 (code=exited, status=6)
CPU: 56ms

Apr 12 12:54:01 proxmox systemd[1]: Failed to start Virtualization daemon.
Apr 12 12:54:01 proxmox systemd[1]: libvirtd.service: Unit entered failed state.
Apr 12 12:54:01 proxmox systemd[1]: libvirtd.service: Failed with result 'e…de'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package libvirt-daemon-system (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up qemu-guest-agent (1:2.8+dfsg-6+deb9u5) ...
Processing triggers for systemd (232-25+deb9u9) ...
Processing triggers for man-db (2.7.6.1-2) ...
Errors were encountered while processing:
libvirt-daemon-system
E: Sub-process /usr/bin/dpkg returned an error code (1)

 

[Stoiko Ivanov]

* You need to install the qemu-guest-agent inside the guest - the hypervisor/proxmox side is enabling the Guest agent flag in the VM config (in the GUI -> VM -> 'Options')

* libvirt is incompatible with PVE - PVE uses it's own stack to run KVM (and LXC) - please remove the package and make sure that the 'proxmox-ve' metapackage is installed.

Hope this helps!

 

[jluc2808]

ok i have remove libvir* package , clean with autoremove , re-installed in Proxmox-Ve qemu-guest-agent, setted qemu agent in my VM (activated)
but when i run the VM and look at the resume screen : i get
IPs Guest Agent not running
i cannot access to the apt-get install function (i'm running a terminal emulator inside android debian 7) even if set su root, no way

i'm surely wrong somewhere and i surely miss something

when i edit : sudo nano /etc/pve/qemu-server/102.conf (my VM)
the contents is

agent: 1
balloon: 1280
bootdisk: scsi0
cores: 2
cpu: core2duo
ide2: local:iso/android-x86-7.1-r2.iso,media=cdrom
memory: 2000
name: Proxmox-android
net0: virtio=9A:C5:49:48:93:ED,bridge=vmbr0
numa: 0
onboot: 1
ostype: l26
scsi0: local-lvm:vm-102-disk-0,size=32G
scsihw: virtio-scsi-pci
smbios1: uuid=99bb2f19-a2ca-4828-b16e-6cc55ddf757b
sockets: 1
tablet: 0
vga: qxl
vmgenid: c0fcb236-2639-4e93-b188-4510fc9f8780

 

[Stoiko Ivanov]

ok i have remove libvir* package , clean with autoremove , re-installed in Proxmox-Ve qemu-guest-agent, setted qemu agent in my VM (activated)

You need to install qemu-guest-agent inside the guest

 

[jluc2808]

Yes I understand and try to do that part, but as I said I couldn't open a ssh session on the guest till I have installed this soft. So it's a snake biting his tail, if I want to access ssl I need to install qemu-guest-agent but to install this I need ssl session?

 

[Stoiko Ivanov]

You can access the VM's console via GUI - there you should be able to find the ip it currently is having - with the tools of the guest OS
(`ip addr show` should work on most recent linux distros, `ifconfig -a` on BSDs, `ipconfig /all` on Windows)

If the guest gets its ip via dhcp - you can look it up in the dhcp logs as well

 

[Chaminda Bandara]

You can access the VM's console via GUI - there you should be able to find the ip it currently is having - with the tools of the guest OS
(`ip addr show` should work on most recent linux distros, `ifconfig -a` on BSDs, `ipconfig /all` on Windows)

If the guest gets its ip via dhcp - you can look it up in the dhcp logs as well

I am expecting a command or a tool to obtain the IP address from the host not the guest.

 

[ph0x]

nslookup is your friend. Or you just look in the GUI after installing qemu-guest-agent in the VM.

 

[AlBayrouni]

* You need to install the qemu-guest-agent inside the guest - the hypervisor/proxmox side is enabling the Guest agent flag in the VM config (in the GUI -> VM -> 'Options')

* libvirt is incompatible with PVE - PVE uses it's own stack to run KVM (and LXC) - please remove the package and make sure that the 'proxmox-ve' metapackage is installed.

Hope this helps!

i have already tried installing libvirt, and ended ups seeing proxmox pakages being removed
thanks a lot for mentioning this

 

[UdoB]

I am expecting a command or a tool to obtain the IP address from the host not the guest.

Without installed guest-agent but only unsing generic Linux tools:

Look for the mac address in the configuration of the vm. In my example: vmid = 1176

~# qm config 1176 | grep net
boot: order=scsi0;ide2;net0
net0: virtio=4E:57:9F:01:4E:6F,bridge=vmbr12,firewall=1

Now you can use "arp" to get the current IP address from the MAC:

~# arp -n | grep -i 4E:57:9F:01:4E:6F
10.12.4.59               ether   4e:57:9f:01:4e:6f   C                     vmbr12

 

[BassT]

in VM use

hostname -I

 

[syntaxerrormmm]

Hi all,

So there's also the (longer way) of leveraging the QEMU Agent and the Proxmox API via pvesh to get those information:

# pvesh get /nodes/<hostname>/qemu/<vmid>/agent/network-get-interfaces

Remember to replace <hostname> and <vmid> with your specific information.

I suggest to use a slightly modified version of the command, parsing with jq:

# pvesh get /nodes/pve/qemu/201/agent/network-get-interfaces -o json | jq

Of course, the QEMU Guest Agent must be installed in the guest and enabled in the VM configuration.

Regards,

 

[ams0]

Just want to add the full jq query for this:

pvesh get /nodes/cloud/qemu/115/agent/network-get-interfaces -o json | jq '.result[] | select(.name == "eth0") | .["ip-addresses"][] | select(.["ip-address-type"] == "ipv4") | .["ip-address"]'
"192.168.1.122"