What tools can be used to prepare 6 PCs in the same way?

Question

linux

There are 6 PCs without OS. On all of them you need to install Ubuntu, java, postgreSQL and one application (the installation looks like running a script in the terminal). Also set static IP addresses. Everywhere all the software and settings are absolutely identical.
With what tools, if any, can I make my life easier and not install and configure each machine manually, but do it with the help of some tool / technology?
There is already 1 ready PC that performs its tasks. Can I use it as a point to control exactly the same six? And actually somehow use it to speed up the settings of the other six?
All 7 PCs will be territorially removed from each other and, alas, with dynamic IPs. Only 1 of them with static.

Answer 1

Either preseed or orchestrated.
For a total of six pieces and an unlikely recurrence, I would suggest the first.
Clone machines, if they are then on the same network, I would beware.
Preseed guides often include image manipulation, which is not really required. It is enough to boot from the stock image, exit grub to the console (ESC) and type auto url={ path to the preseed file available via http }
PS Judging by the clarifications, the machines still remain in active support and regular updates. Then orchestration, of course.

Answer 2

Clonezilla .
You make a disk image on a working computer and deploy it on new ones.

Answer 3

https://qna.habr.com/q/673213