By Michael McGarrah ·
1 min read
The ISC2 CC certification was offered free through end of 2024 — a solid entry point into security fundamentals and a direct stepping stone toward CCSP and CISSP.
By Michael McGarrah ·
2 min read
Powerline networking repeatedly tripped the AFCI breakers in a modern house — turns out arc fault interrupters and powerline adapters are fundamentally incompatible.
By Michael McGarrah ·
9 min read
An extended power outage plus a remote kernel upgrade left half the cluster unbootable, video outputs dead, and Ceph unstable — a crash cart recovery story with four overlapping root causes.
By Michael McGarrah ·
11 min read
Ceph Monitor refuses to start after a Proxmox 8.2.4 upgrade because root partitions hit 95% — fixed by clearing apt cache, removing atop logs, and purging old PVE and Debian kernels.
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