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Systems Administrator Resume

Bentonville, AR

SUMMARY:

  • Highly collaborative and results oriented systems administrator for over five years with proficient experience in installation, configuration and maintenance of Unix, Linux, & Windows server based systems and network applications. History of working on various projects enhancing and optimizing IT infrastructure.

PROFESSIONAL EXPERIENCE:

Confidential - Bentonville, Ar

Systems Administrator

  • Primarily responsible for keeping virtual and physical servers up and running
  • Extensive experience with resolving technical alerts issued by tickets, monitoring tools and phone calls
  • Responsible for installation, configuration and maintenance of Confidential and Cisco servers.
  • Extensive experience in creating and deploying OS Images in an enterprise environment
  • Experience installing and configuring Windows and Red Hat based Linux distributions
  • Expert proficiency with VMware, VCenter and VSphere
  • Configured ESXi host on physical servers for virtualization
  • Sound experience with VM creation, modification, and deletion
  • Ability to migrate Virtual machines between ESXi hosts using VMotion
  • Managed Datastores and DRS pools for VMs
  • Used VMware update manager for patching or updating ESXi Host and Virtual Machine
  • Proficient understanding of configuration management tool Ansible
  • Implemented Ansible to manage all existing servers and automate the build/configuration of new servers.
  • Used Ansible management tool to automate tasks
  • Built and deployed various Ansible playbooks and modules in Production environments
  • Responsible for user management which includes creating, modifying and closing user accounts on systems with Active Directory
  • Created shared mailboxes and distribution lists for Microsoft Exchange
  • Troubleshoot issues for users unable to send or receive emails
  • Performing automated installations using PXE-boot with customized kickstart files
  • Created and managed groups: added and removed users from primary or secondary groups
  • Manage file permissions on linux systems
  • Upgraded servers RAM, Hard-Drives, and CPUs in response to server needs
  • Manage systems routine backups using Confidential TSM (Tivoli Storage Manager)
  • Setup, configured and manage services such as LDAP, DNS, SSH, DHCP, FTP, TFTP, VSFTP
  • Configuring NFS server and mount points
  • Installing and configuring Apache HTTPD server
  • Configuring different RAID levels on Confidential and Cisco servers
  • Creat ed and Managed standard partitions
  • Used LVM for creating physical volumes, group volume, logical volumes
  • Performing file system checks and repairs when needed
  • Maintain file system and host security using iptables
  • Configuring network adapters with IP addresses, gateways and netmask
  • Set up secure passwordless SSH authentication on servers using SSH key pair
  • Perform ed critical system administration tasks from Single user mode
  • Monitor and control system processes using top, renice, kill, etc
  • Conduct system performance tuning and capacity planning
  • Monitor system logs and activity on servers
  • Configure NTP client on servers to synchronize time zone with the NTP server
  • Created and Modified bash scripts to automate daily tasks
  • Experience working with ticketing systems RT and ServiceNow
  • Collaborated with hardware and software vendors to ensure purchases of new servers with the proper CPU power, memory and storage in accordance with the clients needs
  • Installing and managing new servers which includes racking, stacking and cabling
  • Working directly with Vendor to decommission servers and networking equipment following Company rules and regulations
  • Excellent verbal and written communication skills with experience in direct internal and external customer relationship management.
  • Ability to learn new and different technologies to a working depth quickly

Confidential - NY

Linux Administrator

  • Buil t Redhat and Windows systems using PXE-boot with kickstart
  • Actively monitor Systems health using Nagios and responding to tickets generated by Nagios on RT
  • Taking actions based on the alerts to resolve issue in a timely manner
  • Creating/updating firewall iptables rules on Linux systems
  • Solving issues related to user log in with NIS and server connectivity
  • Managed Logical Volume using LVM to change logical, group and physical volumes and file systems s ize
  • Used vi/v im editor to edit configuration files
  • Perform software package installation, upgrades and updates using yum and rpm commands

TECHNICAL SKILLS

Hardware: Confidential and Cisco UCS Servers, Cisco Switches, Desktops

Operating Systems: Red Hat 5/6/7, Windows 2003, 2008, 2012 and VMware Esxi

Servers: SSH, SFTP, APACHE, NFS, NIS, LDAP, Tftp, FTP, PXE-Boot, SMTP and Ansible

Applications: VMware, Active Directory and Exchange

Languages: Knowledge of Shell Scripting language Bash and YAML for Ansible

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