casko.dev// KEITH CASKO / BYTEGEIST ALWAYS LEARNING

IT SUPPORT // SYSTEMS ADMINISTRATION // CLOUD OPERATIONS

Keith CaskoByteGeist

Hands-On IT Support.
Verified Systems Troubleshooting.

Aspiring IT Support, Systems Administration, and Cloud Operations professional transitioning from bakery operations into IT, with practical troubleshooting skills and hands-on labs.

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Windows Server, Linux, and AWS lab projects

INFRASTRUCTURE OVERVIEW

LAB ENVIRONMENT | MULTI-PLATFORM | ALWAYS EXPERIMENTING

A Connected
Learning Environment

A hands-on lab ecosystem for practical experience across on-premises, cloud, and modern infrastructure.

LAB ENVIRONMENTS

  • Windows Server Lab
  • Linux / Docker Lab
  • AWS Projects Lab
  • Monitoring Stack Lab
View actual service status →
Illustrated learning environment: Windows Server and Active Directory, Linux and Docker, AWS projects, monitoring, and troubleshooting connected through a network switch.
ON-PREM LABCLOUD ENVIRONMENTMONITORINGTROUBLESHOOTING

Learning environment illustration · See documented topology ↗

FEATURED PROJECTS

Projects and documentation

TROUBLESHOOTING CASE STUDIES

Diagnosis, repair, verification

PDC Emulator Clock Fix

Symptom: Domain time used the local clock.

Fix: Configured external NTP peers.

Verified: time.windows.com, stratum 5.

Details +

PDC Emulator using its local CMOS clock

Windows Server 2022 · Time Services ✓ Verified Fix

Problem: An AD domain controller reported Local CMOS Clock as its time source. Unreliable domain time can lead to Kerberos clock-skew failures.

Action: Checked the source with w32tm, configured external NTP peers, restarted Windows Time, and resynchronized.

Result: Verified time.windows.com as the source, stratum 5.

$ w32tm /query /source
time.windows.com
See commands and verification

Secure Channel Restore

Symptom: Windows 11 could not reach its domain controller.

Fix: Corrected VM networking and DNS; repaired trust.

Verified: Secure-channel test returned True.

Details +

Restoring a broken domain secure channel

Windows 11 · Active Directory ✓ Verified Fix

Problem: WIN11-01 was bridged onto the physical LAN and could not reach DC01 on the VMware NAT subnet. Trust repair initially failed.

Action: Changed the VM network to NAT, pointed client DNS at DC01, and repaired the machine-account trust.

Result: Test-ComputerSecureChannel returned True; nltest located DC01 successfully.

$ Test-ComputerSecureChannel
True
See audit evidence

TECHNICAL SKILLS

TOOLS | PLATFORMS | TECHNOLOGIES
Windows 11Windows ServerActive DirectoryDNSPowerShellUbuntuDockerAWSGrafanaGitGroup PolicyFile PermissionsVMwareNetwork TroubleshootingAccount ManagementLinux AdministrationService TroubleshootingLog AnalysisSystem MonitoringAWS IAM

CREDENTIALS & EDUCATION

AWS Certified Cloud Practitioner

View verified credential ↗

WGU B.S. Software Engineering

Western Governors University · In Progress
Expected completion: May 2028

Additional verified credentials +

ABOUT ME

> Transitioning from bakery operations into IT, bringing a strong work ethic, problem-solving mindset, and a passion for technology. Hands-on labs, real troubleshooting, and always something new to learn.

> Always learning. Always building.

Background & experience +

Keith Casko — Kalamazoo, Michigan

I'm transitioning into IT, cloud, and systems administration while completing a B.S. in Software Engineering at Western Governors University. My focus is practical, hands-on infrastructure work: Windows Server and Active Directory, Linux, AWS, Docker, networking, and technical troubleshooting.

My professional background is at Costco Wholesale as a Baker. The job is production-paced and team-based, and it's where I developed the habits I bring to IT work — customer service, teamwork, training coworkers, process discipline, prioritization, and real-world problem-solving under pressure.

Western Governors University

Bachelor of Science, Software Engineering · In Progress
Expected completion: May 2028

Building a software engineering foundation alongside hands-on work in systems administration, cloud infrastructure, networking, Java, and web development.

Hands-On Technical Experience

Homelab, cloud projects, and deployed applications
  • Windows Server 2022, Active Directory, DNS, SMB shares, permissions, and domain troubleshooting
  • Linux, Docker, reverse proxy, TLS, monitoring, and service administration
  • AWS Lambda, API Gateway, DynamoDB, Amplify, IAM, S3, EC2, and Systems Manager
  • Documented troubleshooting with verification steps rather than installation-only demos

Costco Wholesale — Baker

June 2015 – Present
  • High-volume production work requiring accuracy, prioritization, and process discipline
  • Day-to-day troubleshooting of equipment and workflow problems
  • Training coworkers, customer service, and clear communication under time pressure

Earlier experience: Bakery and grocery roles before Costco, building a long-term background in customer service, production, teamwork, and operational problem-solving.

CONTACT

Open to IT Support, Help Desk, and Junior SysAdmin roles

Kalamazoo, Michigan · Available on-site, hybrid, or remote.

✉ Email KeithLinkedIn ↗