EDIT: while this did solve some problems for some people, it didn’t solve the notification issue that was reported.
I just found and fixed an issue with infosec.exchange that I hadn't seen in a long time. The problem was that sometimes feeds would not refresh, particularly notifications. The problem started around the time I upgraded to 4.2.0, however that isn't the problem. A look at the web server error logs shows lots of instances of this error:
24: Too many open files
This is a problem I fought a lot in the early days. The issue is the file limits in ubuntu are too low for busy web servers (infosec.exhange web servers regularly have 3000-4000 active connections)
The fix is pretty simple - adding
LimitNOFILE=1000000
to the nginx.service file. The problem is that when I upgraded mastodon, I also upgraded nginx. And apparently, like a bastard, nginx replaced the system service file, which no longer contained the LimitNOFILE=1000000 statement.
Osiris Rex’s sample lands in just under an hour. I look forward to seeing video of the aliens busting out of the container on live TV: https://www.nasa.gov/nasalive
