Arvados

This LGTM, thanks.

Two nitpicks:

Let's Encrypt issues 90-day certs, and recommends renewing every 60 days. With that schedule I'd suggest different thresholds: yellow for <29 days (one less than 30 so the timing of a daily cron job doesn't cause a yellow) and red for <22 days (arbitrarily picking 1 week after yellow).

For non-LE, my first thought was that turning yellow at 6 months seems pretty aggressive -- but then, non-LE renewal is more likely to be manual and/or very slow, so perhaps that's a good time to start looking into it.

Could the green/OK indicator on the Arvados Cluster Overview dashboard be more muted -- like a much darker green? It seems a bit odd for it to be so loud & prominent when it doesn't need attention. (If this were an overall status indicator that only turned green when literally every measurable thing looked good, then a bright green might seem like a more reasonable choice... but this is just one of many things that should be green, so it probably shouldn't look so decisive.)

Tom Clegg wrote in #note-10:

Let's Encrypt issues 90-day certs, and recommends renewing every 60 days. With that schedule I'd suggest different thresholds: yellow for <29 days (one less than 30 so the timing of a daily cron job doesn't cause a yellow) and red for <22 days (arbitrarily picking 1 week after yellow).

Sounds good.

Could the green/OK indicator on the Arvados Cluster Overview dashboard be more muted -- like a much darker green? It seems a bit odd for it to be so loud & prominent when it doesn't need attention. (If this were an overall status indicator that only turned green when literally every measurable thing looked good, then a bright green might seem like a more reasonable choice... but this is just one of many things that should be green, so it probably shouldn't look so decisive.)

This is a good idea! Instead of using a dull green color, I'll set the background as transparent.