Systems & Reliability Engineering.
Tested in a live Windows Server & Proxmox VE environment on dedicated Dell OptiPlex hardware. Production-grade PowerShell toolsets, Active Directory automation, and segmented pfSense virtualization runbooks. Built with strict Pester unit testing to eliminate manual toil and configuration drift.
Active Directory Core
13-Part Master Series, Kerberos protocol flows, FSMO role transfers, AD CS Certificate Authorities, Schema attributes, and DFSR replication.
Windows Server Infrastructure
Windows Server 2025/2022 administration, Hyper-V virtual switches, Storage Replica, RDS Session Hosts, Windows Containers, and NIC Teaming LBFO.
Incident Troubleshooting
Battle-tested post-mortems indexed by exact Event ID: Event 13508 (DFSR), Event 1000 (ADWS), Event 4402 (NPS), Event 13 (CAPI2), and LSASS memory leaks.
Proxmox VE & Homelab
15-Part Homelab Build Series, ZFS storage tuning, Proxmox Resource Limits & ballooning, PCI Passthrough, and automated PBS backup restores.
AI Tools & Autonomous Ops
10-Part Claude Code Master Series, 9-Part Codex CLI Automation Series, Model Context Protocol (MCP) workflows, and agentic DevOps pipelines.
PowerShell Engineering
Production-grade module design, ADOpsKit automation, Pester v5.5 unit test matrices, PSScriptAnalyzer compliance, WinRM remoting, and splatting.
Terraform & Infrastructure as Code
13-Part Terraform Master Series covering declarative HCL, remote state locking, Proxmox VM provisioning, modular topologies, and CI/CD pipelines.
Homelab Build Series
15-Part guide from Proxmox VE 8 baseline, ZFS, chrony NTP, to HA clusters & PBS.
Active Directory Master Class
13-Part concept-to-production guide covering DFL, Kerberos, DNS, and Replication.
Terraform Infrastructure (IaC)
13-Part course from first config to remote state locking, modules, and workspaces.
Claude Code Developer Series
9-Part series covering CLAUDE.md, custom skills, subagents, and MCP tool integration.
Codex CLI Agent Series
9-Part guide to sandboxing, AGENTS.md, TOML config, and automated subagent workflows.
Active Directory & Infrastructure Firewall Matrix
Interactive port calculator and firewall rule generator covering AD Core replication, PKI (AD CS), SCCM/WSUS, Prometheus, and Enterprise Backups with exportable PowerShell scripts.
AD & Windows Security Event Query Builder
Production Event Viewer XML XPath generator, Get-WinEvent PowerShell parser, and SubStatus error code decoders for Account Lockouts (4740), DCSync (4662), and Kerberoasting (4769).
ADOpsKit & ADSetupKit: Active Directory Automation
The Problem: Manual domain controller promotion and GPO baseline provisioning took 45+ minutes and suffered from silent configuration drift across environments.
The Solution: Idempotent, zero-prompt PowerShell toolkits automating forest provisioning, stale account cleanups, Kerberos delegation audits, and domain telemetry.
Engineering Rigor: 100% PSScriptAnalyzer compliance with an automated Pester v5.5 unit/integration test suite executing in CI.
git clone https://github.com/Karanth1992/powershell-scripts.git