Change hostname

Hi there.
I have several computers “folding” at the moment on the one account, and I like to keep track of them with different names. Since installing Balena’s app on a raspberry pi, I can’t ssh into it to change the host name. The host name that Balena selected is really useless. Does anyone know how it can be changed? I’ve looked through the various files on the sd card and cannot find anything that corresponds to the given host name.

You can update device hostname via config.json file.