My Home Assistant started sending me a daily warning: Let's Encrypt certificate is expiring in 29 days, 28 days, 27 days - until I finally found time to investigate why the certificate is not renewing. And fix the issue.
Posted by ads' corner on Saturday, April 18, 2026
While upgrading my Pihole from 5.x to 6.x I ran into a nuisance: the session timeout for the web interface is really short. On the plus side: the session timeout is now configurable.
Posted by ads' corner on Wednesday, June 18, 2025
Was setting up a new Debian Bookworm system in my home environment. So far I was not using certificates at home, and wanted to change this along the way, using Let's Encrypt. Since the IP-addresses here are RFC1918, I can't use the http01 challenge, and have to resort to dns01 challenges. On Debian Bookworm, using certbot, this fails reproducible.
Posted by ads' corner on Monday, June 9, 2025