Starting last Wednesday, 2020-06-10, the number of connection failures with the Termbox SSR services seems to sharply rise to about 300 - 450 per hour.
https://logstash.wikimedia.org/goto/808228af4133ed6e857a168de0c6cd4c
{F31866132}
The error message is given as:
> Wikibase\View\Termbox\Renderer\TermboxRemoteRenderer: encountered a bad response from the remote renderer
with the content being:
> upstream connect error or disconnect/reset before headers. reset reason: connection termination
**It is currently unclear what is going on or what the effects are.** At the very least there is lots of logspam that started recently.
IRC log of discussion: https://wm-bot.wmflabs.org/browser/index.php?start=06%2F15%2F2020&end=06%2F15%2F2020&display=%23wikimedia-serviceops
Investigate:
- what is going on
- what are the effects
Acceptance criteria:
[] Investigation results are provided in this task