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Linux Systems Administrator Resume Profile

Owings Mills, MD

Summary:

Detailed oriented Linux System Administrator/Engineer, with an excellent background in wide variety of professional system support and solution-based IT services for Linux systems/ server administration. Experienced in administering and managing system in multiplatform/ multivendor environment consisting of both physical and virtualized systems by incorporating best practices in the IT industry. A self-motivated professional with excellent team capabilities, coupled with adaptive skills when working in a new work environment and/or projects.

  • Operating System: Mac OS, Windows 3.x, 9x, XP, Vista, 7, 8, Server 2000, Server 2003, Server 2008, VMware ESX and ESXi, Ubuntu, ESXI, Linux RedHat RHEL /Centos 5 6XX servers , Fedora distro.
  • Hardware/Servers: Cisco UCS C200 M2, Dell PowerEdge SC 1425, SC1435, 1850, 2850, 2950 II, R410, R620, R720 Dell M610/x Blade servers, Dell Tower Servers: T320, T410, T420, HP Proliant DL 360 g7/ DL 380 g5s, Brocade 5100 Fiber Channel Storage Switch and Cisco catalyst 3560G, and catalyst 6500.
  • Software: RedHat RHEL Satellite Network, Spacewalk, Munin, HP Service Manager, Subversion, Trac, Kickstart, RPM Package Building Tools, Linux Clusters, Vagrant, Ansible, Puppet, Bash scripting, Putty and Open SSH protocols, VSFTP, vSphere, Cacti, Wireshark, VMware vCenter, Windows Server Update Service, Nagios, MySQL, Apache, Nginx, SFTP, OSSEC, DenyHosts, Symantec AV Server/Client, Veritas Backup Exec, Cisco VPN, WINSCP, DNS, DHCP.Experience with server virtualization, Load-balancing, High availability, Clustering technologies,

Work Experience:

Linux Systems Administrator

Confidential

  • Responsible for setting-up, managing and rapid deployment of RHEL 6.xx / Centos 6.xx linux servers using Kickstart
  • Booting PXE from RHEL Satellite Network and Centos Spacewalk for unattended linux server deployment for both virtual machine and bare metal installations
  • Manage vSphere ESXI host and virtual machines using VMware vCenter
  • Working knowledge of Ansible and Puppet automation tools for system-wide configuration and management of Linux servers
  • Setup, manage and deploy Vagrant-testing environment for developers using customize VagrantFiles as per requirement
  • Manage and configure RPM package building tools for building and patching of applications from source codes for Centos and RHEL systems
  • Built portable Vagrant Boxes from ground up for Centos and RHEL distros by automating rapid installations of applications and services
  • Setup and configured SSH File Transfer Protocol SFTP , VSFTP and other protocols
  • Installation, configuration and administration of VMware ESXI, vCenter, vSphere Client and Linux / Windows clients
  • Installation, configuration, administration and hardening of Apache Webservers
  • Setup Virtual Linux test labs and clones for developers and engineers using VMware
  • Monitored server performance on Red Hat Linux 5 6 servers Installation of patches and packages
  • Setup Munin, Nagios and Cacti server to monitor systems uptime, services and file systems
  • Manage systems routine backup, enabling cron jobs, enabling system logging and network logging of servers for maintenance
  • Follow upgrade roadmap involving installation/upgrades of servers hard drives and memory
  • Installation and configuration of intrusion detection system such as DenyHosts for log analysis file integrity checking, real time alerting and brute force attach prevention
  • Setup and manage user accounts and train new users on the company system environment reset password and unlock locked user account on RHEL 5.xx 6.xx
  • Troubleshoot and fixed NFS, TCP/IP and other protocols problem

Linux Specialist

Confidential

  • Responsible for the installation of Redhat and Centos Linux for new build environment
  • Diagnosed and resolved customer's connectivity issues in RHEL 5 6 servers
  • Managing all types of installation and upgrade on Linux servers
  • Ticket assessment on a daily basis.
  • Setup and configured SSH File Transfer Protocol SFTP
  • Configuring and managing network interface
  • Image servers and client computers and remotely manage their software after deployment on Redhat Linux 5 6
  • Provide software and hardware tech support 24/7 on call support as required
  • Create and Clone Linux, Window Virtual Machines using VMware Virtual Client ESX and ESXi.
  • Performed RPM and YUM package installations, patch and other server management
  • Responsible for troubleshooting software and network problems

Remote System Administrator

Confidential

  • Troubleshot network problems on Linux and Window servers
  • Building servers with jumpstart using Kickstart, CD on timely basis, along with corporate wide requirements.
  • User account management and administration Troubleshooting User's login home directory related issues
  • Installation of hardware, software and upgrading to ensure work is performed as per the company policy on various hardware platforms
  • Create trouble tickets to track, diagnose and resolve network problems
  • Serve as teaching assistants and grader for introductory and advance undergraduate classes in physics
  • Develop computer programs for analyzing and sorting of experimental data from Ion dissociation by laser experiments using Open source Linux tools
  • Researched extensively on the principles of Ion Trappings and Development of a Physical Model
  • Graduate Research Assistant Confidential
  • Configuring and managing network interface
  • Job scheduling and automating process using Cron job
  • Responsible for the coordination of over 100 students per week in undergraduate experimental labs
  • Physics tutor at the department of physics student help center
  • Serve as a research mentor/ assistant to undergraduate students on research and poster presentations
  • Extensive knowledge and usage of Simulation tools and Electronics circuit development tools

Network Administrator

Confidential

  • Responsible for the Installation, Configuration Upgrade of operating systems Red hat Linux and Windows 2000/ 2003 servers
  • Installing operating systems, patches, hardware, vendor software packages, system customization and documentation
  • Installed and Configured Security Services like SSH, SSL, TCP Wrappers on Linux Servers
  • Setup and manage Ubuntu labs for training of company personnel
  • Configured auto mounts/maps for the user accounts and groups
  • Part of the team that supported a 24/7 highly critical system
  • Manage all the technical support department documentations, installation and deployment manuals
  • Created and manage an up-to-date internal Help and FAQs pages

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