Years ago, at a previous job, i was asked to put up a monitoring display showing details from our service desk. I was given a TV and a Raspberry Pi, and told to go at it.
I hacked around a bit, eventually had something that sort of worked, noted down how i'd done it, and moved on. When a friend asked me for more details i passed on my notes, and after a couple of years of poking around between a few of us, we have a pretty good idea how to implement this. Tas has documented it in great detail on her blog here and here.
So, at work i've set up a new monitoring system for our servers and services.
And i've found a nice dashboard that hooks into it and gives a ten-foot view.
And i have a spare raspberry pi and projector. Hmm.
I decided this time though, i'd do it properly. I've faffed about running through those instructions too many times in the past few years, and i'm now pretty handy with ansible for automation. Seems logical to implement it using that right?
So to start with, we have a raspberry pi running raspbian lite. We don't need
all the full everything installed on it, just the few bits we want to display a
browser full screen. We need to specify the user we plan on running as, and the
url to display. I do this in
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Then we have a role set up to actually do the thing. This is the playbook
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We then have a handler to restart lightdm when we change any settings. This
will cause the kiosk display to restart. It sits at
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And finally, the template for the xsession, this has a few modifications, it
will automatically detect your screen size, and checks that it can see a http
200 code from the specified URL before starting the browser. It lives at
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