#sysadmin
4 posts
-
My Server Froze After 1044 Days of Uptime
A dedicated server stopped responding after 1044 days without a reboot. Diagnosing the soft lockups, tracing it to AMD erratum 1474, and disabling the CC6 idle state on Linux.
-
Fibre Optic Cables
A practical guide to fibre optic cables - how they work, single-mode vs multi-mode, connector types (LC, SC, FC, ST, MTP), and polish finishes (UPC, APC, PC).
-
Disable WordPress Automatic Update Emails
A one-file must-use plugin that stops WordPress from sending automatic update notification emails for core, plugins, and themes.
-
Replacing an NVMe Drive in a Hetzner Dedicated Server
Step-by-step walkthrough of replacing an NVMe drive with a SMART endurance warning in a software RAID-1 setup on a Hetzner Robot dedicated server.