https://iter8lab.net/tags/incident-response/ Recent content in Incident-Response on iter8lab https://iter8lab.net/images/mascot.png https://iter8lab.net/images/mascot.png Hugo en-us Fri, 11 Sep 2026 00:00:00 +0000 https://iter8lab.net/posts/2026-09-11-smtp-panic-vmcore/ Fri, 11 Sep 2026 00:00:00 +0000 https://iter8lab.net/posts/2026-09-11-smtp-panic-vmcore/ A fourth silent smtp reboot finally came with a vmcore attached, and the mechanism behind it turned out to be a Ceph mon flap wearing a kernel watchdog costume. https://iter8lab.net/posts/2026-09-03-five-months-of-silence/ Thu, 03 Sep 2026 00:00:00 +0000 https://iter8lab.net/posts/2026-09-03-five-months-of-silence/ A cert-verification gap let 13 GB of vulnerability data sit frozen since April; fixing it triggered a second failure I hadn’t budgeted for.