Remote ubuntu install

[Keith]

On 4/30/22 9:02 PM, Jerry Geis wrote:
> Is there a way to just take the files from server-iso image (kernel and 
> initramfs) put that on my current OLD machine (CentOS 7 based)
> and have kernel command line instructions to start the UBuntu install ?  
>   I desire "not" to download the server-live iso as that takes most of 
> my 2G ram.
> 
> How can I take just the kernel and initramfs from the server-live -and 
> have that be the bases for an install?
> Thanks
> 
> Jerry
> 
> On Sat, Apr 30, 2022 at 7:55 PM Jerry Geis <jerry.geis at gmail.com 
> <mailto:jerry.geis at gmail.com>> wrote:
> 
>     Is there a method to install ubuntu - Without downloading the
>     server-live iso ? (which is large).
>     I have autoinstall working - but again - it has to download the
>     server-live iso.
> 
>     I "desire" a very minimal "download" or EVEN no download of an iso
>     (seems mini is no longer supported)... That based on autoinstall
>     file  - will just reformat the disk - and "download" everything from
>     the net and install - no ~2G iso to download.
> 
>     I can login to the teh current machine - put anything I want/need on
>     there - reboot and let Ubuntu install. Typically I install the
>     "grub" command needed to boot- do the autoinstall - downloads the
>     live server - and installs and reboots. But that ~2G iso is a
>     problem on machines with 2G ram. Sometimes it works - sometimes it
>     doesn't
> 
>     How can I do that ? Thanks
> 
>     Jerry
> 
> 
Not sure about rolling your own, but I recently installed 22.04 in a 
virtualbox vm by first installing 20.04 from the netboot mini.iso (80M 
or so) and then immediately upgrading by using "do-release-upgrade -d". 
I provisioned the vm with 2gig mem, 20gig disk space and it went 
smoothly. The upgrade installed about 460M worth of packages with the 
linux-firmware package taking up about 240M of that total. Of course, 
this was for a clean install and not an upgrade of an existing system.

What you'll have after the upgrade is not what I would call a bare-bones 
system, but its pretty scaled down. Total disk footprint was 2.7G. No 
gui or even common Server services are installed.

-- 
Keith