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Linux Systems Administrator Resume

Greenbelt, MD

SUMMARY:

  • Strong performance background in wide variety of professional system support and solution - based IT services for Linux and Unix Systems including, monitoring, configuration, troubleshooting and maintenance of operating systems.

PROFESSIONAL EXPERIENCE:

Linux Systems Administrator

Confidential - Greenbelt, MD

  • Install new / rebuild existing Linux and Centos servers and configure hardware, peripherals, services, settings, directories, storage, etc. in accordance with standards and project/operational requirements of the company/client
  • Develop and maintain installation and configuration procedures and system standards
  • Installing RedHat Linux using kickstart
  • Experience in Installing and configuring NFS, DNS, NTP, HTTP server, also configuring VIRTUAL HOST and supporting them on Linux servers
  • RPM and YUM package installations, patch(both OS and Application) and other server management.
  • Experience in User administration( setting up user accounts and group login ID's, password and resolving permissions issues)
  • Investigating and troubleshoot all issues related to IT infrastructure for internal teams or clients using telephone/emails
  • Managing systems routine backup, scheduling jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
  • Worked and performed data center operations including cabling, rack mounting and printing services
  • Collaborate with other teams and team members to develop automation strategies and deployment processes
  • Experience in using VMWARE as a hypervisor to install virtual machines.
  • Experience with vm snapshot and ESXi hosts patching
  • Experience in VM Migration.
  • Some experience with BASH Scripting
  • Some experience with MYSQL DATABASE
  • Knowledge of networking protocols like ( TCP/IP, HTTP,HTTPS, DNS,NTP,FTP, LDAP, SSH,etc)
  • Experience in administring IPTABLES RULES and FIREWALL RULES
  • Basic Knowledge of window server and Active Directory
  • Experience using the VI EDITOR
  • Monitored server and application performance & tuning via various
  • commands (vmstat, top, iostatetc.)
  • Experience with Automation tools
  • Experience using puppet as a configuration and management tool
  • Experience with logical volume manager (LVM)

Linux Systems Administrator

Confidential, Hyattsville, MD

  • Installation and administration of RHEL 4.0/5.0 and Centos 5.x/6.x. and applying security polices for hardening the server based on the company policies.
  • Configured kickstart server and updating/applying patches to the servers using proxy server.
  • Experience in Vmware
  • Remote system administration using tools like SSH, Telnet, and Rlogin.
  • Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
  • Have experience with shell scripting
  • Automation of jobs through crontab and autosys.
  • Applied appropriate support packages/patches to maintain system integrity.
  • Performed capacity analysis, monitored and controlled disk space usage on systems.
  • Facility and Service Administration.
  • Designing Firewall rules for new servers to enable communication with application.
  • Experience in using VMWARE as a hypervisor to install virtual machines.

Junior Linux System Administrator

Confidential, MD

  • Install, configure, and maintain organization's operating system (Centos& Red Hat).
  • Apply patches to stay current. Implement and maintain security policies and procedures.
  • Coordinated routine server maintenance and implement server infrastructure changes as needed.
  • Performed daily system administration activities; checking system logs, troubleshooting, and other system resource usages.
  • Provided support for assigned applications, including setup of new users, password resets, and basic troubleshooting of application issues.
  • Evaluated, escalated and coordinated resolution of environment-related issues with appropriate personnel.
  • Served as a subject matter expert for functionality within assigned applications, and stayed current on new and upcoming enhancements within assigned applications.
  • Answered questions from end users and provides basic training to new users as needed.
  • Coordinated with application vendors for upgrades, enhancements, and technical support as required.

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