Matthew M HeadleeLinux Systems Administrator
Taylorsville, UT 84129Linux Instructor
731-439-9366Consultant
mmh@matthewheadlee.com

Summary
I have used Linux in my personal life since 1998. At home I run two rack mount servers running 14 virtual machines and as many as 60 virtual machines during experiments. I love computers; to me they're more than just a paycheck.

I have professionally worked in I.T. with a primary focus on Linux systems since 2004. I advanced from being a simple help-desk technician into systems administration, where for four years, I deployed and maintained over 800 physical servers located all over the world. After my experiences with systems administration, I moved into a split instructor/consultant role, which I have been acting in for the last seven years.

As a consultant, I've gained great real-world hands-on experience deploying new environments and supporting existing infrastructure. I've completed successful consultant work for Moody's, DICK'S Sporting Goods, Capital One, H-E-B, and many others.

As an instructor, I teach classes of students how to use Linux and Linux-related technologies, including Red Hat® Enterprise Linux, Hadoop, High-Availability Clustering, Docker, Chef, Puppet, and many, many other technologies which are listed below.

A notable consulting experience
As a consultant, I did work with a H-E-B, a large specialty grocery store, whose data centers are located in San Antonio, Texas. I was brought out to help the company upgrade a large existing Red Hat Satellite 5 server to Red Hat Satellite 6. This is no small task. Over a period of two weeks, I deployed two Satellite 6 servers and set them up in a high-availability active-passive setup. I worked with the employees to plan data migration from the existing Satellite 5 servers, and eventually moved all data, licenses, and registered client machines.

Further, I developed several Puppet modules which were used to ensure a consistent deployment across the company's nearly 15,000 servers. These modules were responsible for ensuring ssh keys were deployed, enabling registrations to the Red Hat iDM, synchronizing sudo rules, and configuring remote logging.

Over the years, I've had the opportunity to work with many different technologies, and I have a proven track record of being able to adopt new and upcoming technologies.

• Advanced experience with the major Linux distributions including Red Hat Enterprise, SUSE Linux Enterprise Server, Debian, and Ubuntu.
• Experience with the installation and configuration of:
  • Systemd & Journald
  • Docker
  • Hadoop
  • Splunk
  • Red Hat Satellite
  • SQL Databases: MySQL/MariaDB, and PostgreSQL
  • NoSQL Databases: MongoDB, Accumulo, and dbm
  • Git version control
  • GitLab
  • Automation: Puppet, Chef, and Ansible. Knowledge of SaltStack
  • Monitoring: Nagios, SolarWinds, Zabbix, Centeralized Rsyslog
  • E-Mail Services: Postfix, Spam Assassin, Dovecot, Cyrus, Sieve
  • Remote Filesystem Protocols: SMB, NFS
• Scripting, Programming, & Web Development Experience:
  • Programming experience in: C, C++, PERL, PHP, Python, JS, and Ruby
  • Wed Development Experience in: XHTML, HTML5, Python, PHP, JS, JSON, XML, REST, CSS, Smarty, and Django.
  • System Administration Scripting: Bash, PERL, tcsh, and pure sh

I have written several documents and guides related to Linux:

• Converting to ZFS on Linux — matthewheadlee.com/projects/zfs-as-root-filesystem-on-fedora-25/
• Scanning for open HTTP proxy servers — matthewheadlee.com/projects/nse-proxy-checker/
• A PHP library for easily using query strings delimitated by fore-slashes — matthewheadlee.com/projects/saqs/

I was required to obtain these certifications as part of a consulting job. I am confident I could achieve any certification required:

• Red Hat Certified System Administrator, Cert Number: 150-102-440
• LPIC-1 Certified, LPI ID: LPI000222534, Verification: 3fd2g4qh6t
• Novell Certified Linux Administrator, ID: 10161540

2014 — PresentRed Hat Consulting ServicesGlobal

Consultant

• Provides Red Hat Consulting services to Red Hat® customers.
• Facilitates on-site installation, configuration, and ongoing support of Red Hat® services.
• Have deployed Red Hat® software including but not limited to: Satellite 5, Satellite 6, Puppet, Docker, RHEV, Hadoop, and the Red Hat® High Availability Clustering Suite.

2010 — PresentGuru LabsCenterville, Utah

Linux Systems Instructor

• Provides beginning, intermediate, and advanced Linux training for Guru Labs and other companies.
• Class topics include system troubleshooting, shell scripting, networking, security, RAID/LVM, SELinux, netfilter, SSH, Apache, BIND, Postfix, LDAP and more.
• Maintains and researches the current courseware, ensuring the material is up-to-date.
• Develops new hands-on labs and course material as Linux changes.
• Classes cover everything from basic "What is Linux?" to advanced Linux systems administration, such as configuring High Availability Clusters, iSCSI Targets and Initiator setup, Docker, Hadoop, and Security Administration.
• Provides Linux training for many end clients, including but not limited to:
  • United States Army, United States Marines, and United States Navy SEAL Support
  • United States Air Force (39IOS, 333TRS, 143IOS, 78FSS, 81TRW)
  • Federal Bureau of Investigation
  • National Security Agency
  • Hewlett-Packard Company
  • UPS - Information Services
  • Intel Corporation
  • University of Maryland, Baltimore County
  • University of New Mexico
  • Progressive Insurance
  • Digi-Key
  • EMC Corporation
• Instructs online, local and out-of-state classes.
• Manages class sizes up to 30 students.
• Responsible for classroom setup and any issues that arise.

2007 — 2010ListMarketerMurray, Utah

Senior Systems Administrator

• Successfully managed over 800 remote servers running various versions of RHEL, CentOS, and Fedora.
• Administered local installs of various Linux systems.
• Managed CentOS remote installations using Anaconda and Kickstart.
• Administrator of 35 local Windows clients.
• Responsible for procuring additional servers and IP blocks with many ISPs.
• Configured DNS records for thousands of domains.
• Created automation for the configuration of DNS records saving the company many man-hours.
• Managed installation and configuration of BIND, Apache, PHP, PERL, and PostgreSQL on over 1000 servers.
• Provided assistance to co-workers, including writing scripts, running fleet wide audits, and debugging components of the company's software.
• Worked closely with the development team to identify, troubleshoot, and resolve software defects.

Provisioning Manager

• Directly managed a team of four.
• Provided internal training and support.
• Balanced workloads of my team members.
• Handled escalations and resolved conflicts.
• Worked directly with multiple ISPs for purchasing servers, IP blocks, and managing ISP relations.
• Managed customer expectations.