Modern IT infrastructure, in five pillars
The framework I use to keep infrastructure sane: five pillars on four foundations, every component a CI wired to the rest.
Notebook
Identity × Operations
Who or what is acting — users, service accounts, devices, AI agents. · Run it — provisioning, patching, incidents, SLAs.
Opinion notes
Expert hands, junior judgment
Implementing AI isn't buying a tool. It's staffing a team: expert at the task, junior at the call. Why that reshapes hiring, not just headcount.
How the agent fleet is wired, in five layers
From a typed request to a guarded action against a real system, a walk down the stack that turns Claude Code into a fleet of homelab operators: the CLI, the shared agent-core, the agents, their skills, and the actions they perform.
A Cisco ISE MAB fallback that won't lock you out
A critical-auth VLAN so a dead RADIUS server doesn't take a whole floor offline.