Saturday, April 9, 2022

Ubuntu/Linux/Hyper-V: Creating an Ubuntu 20.04 VM can be accessed from Hyper-V's Host Computer

I was assigned a project where a shell script had to be run remotely on an Ubunto 20.04 Virtual Machine (VM). The remote script failed on an Azure VM so I fell back on Hyper-V running on Windows 11. The way I traditionally configured an Ubuntu 20.04 VM did not permit SSH access from the host computer. These are the steps required to set up an Ubuntu 20.04 that can be configured to accept SSH connections from the host computer.

Create VM (Basic Ubuntu Install)

Create VM pre-installing Ubuntu from an Image

1) Download the Ubuntu 20.04 LTS from Download Ubuntu Desktop on the host computer. The format of the image download will be ISO.

2) Launch Hyper-V Manager on the host computer and make sure that the host computer name is selected in the left panel:

3) Select Action | New| Virtual Machine:

4)  Navigate click Next in the New Virtual Machine Wizard under the Specify Name and Location panel is displayed:

5) Enter the name of the virtual machine to be created (the name above is devops02-ubuntu20.04) and click on Next:

By default, Generation 2 VMs cannot use an ISO operating system image for installation. This will be addressed at a later step in the installation process.

6) From the Specify Generation panel select the Generation 2 radio button and click Next:

7) From the Configure Networking panel select Bridge (which allows external access to say the internet and provides access to the internal network, a.k.a. the LAN) which will enable access to the VM from the host computer (the VM will be assigned a local IP address) and click Next:

8) Configure the hard drives and click Next:

9) Specify the location of the Ubuntu install media and click on next:

10) Click Finish on the final setup screen:

Configure Ubuntu to Install from ISO

1) From Hyper-V Manager highlight the VM being setup and from the Actions panel on the right click on Settings:

2) From Settings dialog select Hardware | Security from the pane on the left:

3) Click on OK.

Installing Ubuntu on the VM

1) From Hyper-V Manager, double click on the VM to be set up in order to establish a connection to the VM (opens the connection dialog):

2) From the per-VM connection dialog click on Start:

3) Clicking on Start displays the standard Ubuntu install wizard.

4) Click on Continue and perform the steps required to complete the installation of Ubuntu.

Verify Static IP Address

The previous steps ensured that a VM was assigned a static IP address. In order to verify that this static IP address was assigned, run ifconfig from a terminal on the VM. The installation of ifconfig is presented in the post, Ubuntu/Linux: Retrieving a Computer's IP Address using ifconfig). 

Below is a screenshot showing the output from ifconfig when run from the VM:

The output from running ifconfig (above) shows a static IP address has been assigned to the VM.

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