Originally published on February 16, 2023 at https://bruno.verachten.fr/2023/02/16/minijen-is-alive/ miniJen The Jenkins multi-architecture CPU instance What is that contraption? Nope, it’s not a robot of some sort, it won’t move by itself. It’s not Cerebro from Professor Xavier; no, it can’t fly either. What you’re looking at is a Jenkins “ cluster ” or “ instance ”. It is composed of a controller (the “brain” or conductor) and three agents (the workers or musicians if we continue a little further with the metaphor). During FOSDEM , we displayed the aarch64 Jenkins controller dashboard on an another computer screen using the same Wi-Fi network. This Jenkins instance was featured in the Hackaday blog post about FOSDEM. These boards are not microcontrollers , they are miniature computers running GNU/Linux , like the infamous Raspberry Pi . Hardware The controller runs on a NanoPi R5S , sold as a router (thus the three RJ45 connectors).…