Senior Linux System Administrator
Last active: 5 months ago
Roger Griffith – Telecommute ONLY
Summary of qualifications
1997 - 2015
System Network Security & Database Administration
Standards: PKI, PCI-DSS, ITIL v3, DoD CAC
OS Platforms: Linux CentOS & Redhat (6-9, fedora & RHEL on Intel & Sun), Debian, Mandriva, Ubuntu, Free BSD (4-4.9), OS X (10.1 10.10), Solaris, AIX 5.2 – 5.3, Windows
Virtualization: Xen, VMWare, VirtualBox, Parallels
Networking: Cisco (Switching, Routing, Security, VOIP, Wireless, VPN), Extreme, Foundry, F5
Storage: EMC, HP, Brocade
Scripting/Programming/Frameworks/Deployment: ROR, PowerShell, Perl, Bash, KSH, PHP, AJAX, HTML, CSS, SQL, make
Software & Tools: DNS, OpenLDAP, Sendmail, CGI, Apache, WebLogic, Jetty, JBoss, Tomcat, Samba, iptables, PIX, IOS on Foundry and Cisco, Big-IP OS, JunOS, Extremeware, Microsoft Office, Visio, Microsoft Project, Drupal, Joomla, TextMate macros etc.
Databases: MySQL, PostgreSQL, Oracle
Monitoring: Nagios, Zenoss, Netcool OMNIbus
High Availability: EC2 cloud, CS (rackspace - slicehost), eucalyptus, dcloud, Hadoop, CDN, RedHat Cluster Manager, Apache Clusters, MySQL Clusters, WebLogic Clusters etc.
1993 - 1997 University of South Florida Tampa, FL.
BS. Natural Sciences (Physics Major)
Concentration in Theoretical Physics.
1998 - 1999 Deitel & Associates Sudbury, MA.
Scripting & Programming
C++, Java, Visual Basic at Deitel & Associates, Inc.
Oracle and KSH scripting at Sun Microsystems
Netbackup, VxFS and Volume Manager at Veritas Training Center
Weblogic at BEA
AIX training at Unicomp
1/2010 – Present Freelance LAMP and Systems/Network/DB Admin
Provide mostly internet consulting services and training for customers. Project implementation and hand over to customer’s internal staff. Documentation and ticketing systems setup. Work with project managers and other stakeholders from initial planning till completion.
Scripting and automation (Perl, Python, PHP, Ruby and Bash)
Web App Development http://vinesnap.mobapp.at/landing/Desktop
Web tools and app development
PHP & Mean Stack (AngularJS, Express, MongoDB, Nodejs)
Cloudstack on Cisco UCS servers
Hosting (PaaS, SaaS, IaaS)
Data Center setup
Configuration management with custom scripts and conversion to chef
Training (Linux, Networking, Netbackup, Mysql performance tuning etc.)
Consulting, Tech Support (on call rotation)
Monitoring (Nagios, ganglia, etc.)
Linux kernel and device drivers
CVS and Git
Building RHEL packages
Backups and Disaster recovery using scripts, netbackup with LTO library
Brocade and Cisco SAN
2/2008 – 8/2009 ACS Inc. - OC Data Center Santa Ana, CA
Senior Linux Network Engineer – http://www.ocgov.com
(See Detail below – same position and location as below, but different employer)
Consolidate specific applications and in some cases servers onto Xen based clouds: Amazon EC2, Rackspace (Slicehost):
RHEL4 (m1.small aand m1.large), CentOS4 (with mysql, apache, tomcat), Fedora9, Suse, Debian
Cloudwatch, Zenoss, and Email etc.
11/2007 – 2/2008 Sapphire Technologies - OC Data Center Santa Ana, CA
Senior Systems Engineer – http://www.ocgov.com (consultant)
Load Balanced Clusters using a combination of software and hardware solutions (cisco, foundry, F5) to achieve predefined performance and QoS. (Tools used for analysis and verification: IBM Rational, Jconsole, Visual GC, Jprofiler, Lambda probe, Yourkit, Ab, Loadrunner, Badboy, Jmeter)
County Agency Support – Support various County Agencies such as Probation, Health, etc.: DNS, FTP, Mail, etc on Solaris 8, 9, 10 (Sun Hardware) and Linux(CentOS, Debian and RHEL) on Vmware, Xen, Dell and HP servers
Provide UNIX support for DB2, websphere clusters, in a development, Test(QA) and Production on RHEL & (IBM p595 partitioned running AIX 5.3)
Setup MySQL instances on Linux with HP hardware
Setup Veritas Netbackup on Linux for backup, recovery and disaster recovery (including custom backup scripts on an VMware guest VM)
Zenoss, Nagios and Cfengine working for configuration management and self-healing.
Tomcat 5 & Weblogic (8.1 – 10) Support – In Production application redeployment and updates, upgrades, troubleshooting for applications such as Clarity, Vignette Portal and Content Management applications.