Get IP addresses of Hyper-V Linux machines

I have Hyper-V on Windows Server 2012, and in the Hyper-v I have CentOS 6/7 vm. I doing the following command:

Get-vm -name "x" | select -ExpandProperty NetworkAdapters

Output:

Name IsManagementOs VMName SwitchName MacAddress Status IPAddresses
---- -------------- ------ ---------- ---------- ------ -----------
Network Adapter False "x" InternalSwitch Mac {Degraded, protocolversion} {}

Why is IPAddresses empty?

I tried (command).ipaddresses and got the same result.

3 Answers

I had to install Linux Integration Services to the virtual machine (Linux Integration Services 4.1):

1. Download the package from Linux Integration Services Version 4.1 for Hyper-V to the guest server (Linux) and unpack it. There is also an ISO image available that you can mount with Hyper-V Manager if you have no way of transferring the package to the guest host.
2. Find your distribution under the unpacked directory (e.g. CentOS72).
3. Run install.sh as root.
4. Reboot the guest OS.

For CentOS 7 it also required to disable NetworkManager. That (and other hints) is told in Supported CentOS and Red Hat Enterprise Linux virtual machines on Hyper-V (Notes 2 for NetworkManager)

Run: systemctl disable NetworkManager and reboot

Now the Hyper-V Manager should show you the IP address of the VM and Get-VM should also work.

You're not alone here, I have this issue too. Make sure that you're running PowerShell as admin, or you wouldn't get any IP addresses at all. And even if it run as admin, I still can get IP address only for one VM out of 30 on my host.

I could not solve this issue using PowerShell tools, but there is a workaround:

You can get the MAC address of your VM with Get-VMNetworkAdapter. From the Hyper-V host, ping the IP address range you know you VM can get (from DHCP I suppose), and test the ARP table for the MAC address.