I've started seeing a weird issue that I can't find the trace in the logs.
I'm running t3a.medium instance on ec2 and hosting 10 websites on it. No caching, just wp + LE. All of that is behind Cloudflare, and it was working fine until yesterday. I keep getting error 522 with CF proxy enabled, or domain.com took too long to respond when i disable CF proxy. However, for any of the websites, I don't see anything in access or error logs. I've tried rebooting the server, upgraded to latest WO, and all the packages. Double checked AWS Security group to allow all ports (and only those I needed) even tried to disable fail2ban and ufw on the server. Without any change.
The only thing I see is when i try to issue LE.
xxx.com:Verify error:Fetching http://xxx.com/.well-known/acme-challenge/7-wlw8nBeyjpv20002XHfC_yZrG8Wln8djVysjiu1HY: Timeout during connect (likely firewall problem)
[Mon Nov 4 14:20:37 UTC 2019] Please add '--debug' or '--log' to check more details.
Did anyone experience similar issues?