Report here the timeline of incidents and interventions on off2 server. Keep things short or write a report.
see 2024-01-19 Certbot failure on off2 reverse proxy
openpetfoodfats.org answers with a 502 bad gateway.
curl --header "Host: world.openpetfoodfacts.org" http://10.1.0.110:80/ does not work from proxy, while it works from off2.
The problem solves as I launch a ping 10.1.0.101 from opff (110)…
I think it's an ARP problem.
The website https://fr.openpetfoodfacts.org use a certificate expired on 2023-10-20 and emited on july 22th.
certbot renew says nothing is to be renewed.
Looked at /etc/letsencrypt/live/openpetfoodfacts.org/ and /etc/letsencrypt/archive/openpetfoodfacts.org/ and configuration, all seems ok.
Finally a systemctl reload nginx did it.
see reports/2023-05-off2-110-unreachable.md