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Linux Administrator Resume

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AZ

SUMMARY

  • Over 7 years of professional experience in System Administration and Networking with expertise knowledge on VMware Virtualization and Windows 2000/XP/ 2003/2008/2012 Vista Operating Systems and Linux platforms. 5 years of experience in Datacenter Consolidation, Migration, Business Continuity, Backup, Storage and Virtualization domains in IT Infrastructure. Committed towards perfection in work, capable of managing large scale projects in enterprise level and seeking professional excellence in all endeavors.
  • Expertise in System Administration in Linux, UNIX, Windows, VMware and SAN/LAN
  • Expertise in deploying, configuring, monitoring, fault isolation and troubleshooting of 3 tiered applications
  • Expertise in Virtualization using VMware ESXi server 4.x, 5.x, 6 vSphere Client, vCenter Server, VMware Workstation, Virtual Box, Deploy OVF templates and vMotion.
  • Highly experienced on Linux based server solutions like Apache, FTP, DHCP, DNS/NIS, SAMBA and NFS
  • Implemented RHEL automated installation using Kickstart on Confidential /DELL hardware
  • Profound experience in Logical Volume Management (LVM) and Logical Partitioning.
  • Experience in using various transport, application and internet protocol layers like DHCP, DNS FTP, HTTP, IMAP, POP3, RPC, SMTP, SSH, Telnet, TCP/IP, IP(IPv4, IPv6).
  • Solid understanding of RPM & YUM, building, maintaining, and installing packages.
  • Creating and maintaining Users, Profiles, Rights, and Disk space, LVMs, RAID and Process Monitoring on Linux
  • Kernel Patching with different distributions. Checking Kernel Parameters for better Performance Tuning.
  • Experience with Different storage Vendors like EMC, Netapp and Hitachi and configured DM multipath and EMC Power Path.
  • Worked on Group/User administration, Startup & Shutdown Scripts, Crontab, File System Maintenance, Backup Scripts and Automation.
  • Install and manage software and hardware RAID to improve fault tolerance and performance.
  • Experience with switches and routers from various vendors like Cisco, Dell, and Confidential .
  • Good knowledge of UNIX Shell Scripting and solid understanding of networking and security protocols
  • Design and Implementation of VIEW 4 Application packaging using the VMware ThinApp 4.5.
  • Deploy, Secure, Analyze, Administer and Troubleshoot VMware VI3.5 platforms
  • SME with large scale virtualization experience including SAN, NAS and iSCSI
  • Extensive experience with Windows clustering on VMware.
  • Provisioned Cisco Unified Computing, Fabric interconnects Switches, Chassis, Blades.
  • Extensive experience with Perform for monitoring performance and knowledge on vFoglight.
  • Expertise in virtualizing mission critical Windows and Red Hat Linux servers using VMware Converter and PlateSpin Migrate
  • Design, Implement and troubleshoot any issues related to VMware Distributed Resource Scheduling, Resource Pools, VMware High Availability, Enhanced VMotion (EVC), ESX Host Profiles, vNetwork Distributed Switch (vDS) and VMware Fault Tolerance (FT)
  • Experience performing Capacity planner assessment for Datacenters and assist customers in Datacenter virtualization and consolidation process
  • Experience designing and virtualizing corporate desktops using VMware View (VDI) and ThinApp
  • Experience in updating / upgrading ESX servers, Virtual Center servers and windows virtual machines using VMware Update manager and manual upgrades
  • Experience in handling hardware manufactured by Cisco, IBM, Dell, Confidential, EMC, NetApp, and Brocade
  • Experience installing, managing and administering Windows 2008 and 2003 based Domain controllers, Backup / Additional Domain Controllers
  • Experience with Powershell, VB scripting and Perl scripting.
  • Experience installing, configuring & administering Network services like DNS, DHCP, IIS, WINS and WSUS
  • Experience in the Server and Desktop Management (Windows Administration), Support, Analysis and Maintenance
  • Installation and Management of Network Security Servers like Symantec Corporate Edition and Trend Micro Office Scan
  • Supported a large scale Data Center projects including server installation, hardware maintenance, and break/fix activities
  • Exceptional troubleshooting, organizational, interpersonal, written and verbal communication skills.
  • Strong interpersonal communication and technical skills in software, hardware and networking which help me to quickly identify and resolve issues.

TECHNICAL SKILLS

VMware Virtualization: VMware Workstation, VMware Server, VMware GSX server, VMware Infrastructure 2 & 3 (ESX server & Virtual Center), VMware vCenter Converter, VMware ACE, VMware Fusion, VMware Lab Manager, VMware SRM, VMware ThinApp and VMware Virtual Desktop Manager, Brightstor Arcserve Backup, Veritas NetBackup, Legato Networker & VMware Consolidated Backup (VCB), Security Solutions Symantec, McAfee and CA eTrust security suites, CLARiiON, EMC Navisphere, Device managers for Fabric Switches (Brocade & Cisco) EMC Powerpath, EMC Snapview, EMC Mirrorview and Sancopy, System Management, IBM Net cool, IIS 7.0/6.0/5.0, Linux and Citrix Xenapp.

Desktop Operating Systems: Microsoft Windows 98, 2000, Win XP sp2, Vista, Windows 7

Server Operating Systems: Microsoft Windows 2000, 2003, 2003 R2, 2008, 2008 R2.2012 Red hat Enterprise Linux 4.x, 5.x, 6.x(ES/AS/WS); IBM AIX 5.x, 6.x,7.1 ; Solaris 2.6,8,9&10; FedoraCore2,3,4; CentOS; Windows 95/98/2000/XP/Server 2008 R2 and MacOS X

Server Services: Active Directory, DNS, DHCP, TCP/IP, LAN/WAN Admin, Clean Server Installation/Migration

Directory Services / Internet: Designing, Deploying and Migration of Windows Based Active Directory. Installation and Administration of IIS 6.0, DHCP & DNS servers

Server Hardware: IBM Blade Servers, Confidential Proliant DLs and Blade Servers, Dell Power Edge Servers, Routers and Switches

PROFESSIONAL EXPERIENCE

Confidential, AZ

Linux Administrator

Responsibilities:

  • Administration of 1000 + RHEL 5.x, 6.2 and 6.3 servers which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
  • Management and monitoring of various services using Service Management Facility and Service Administration.
  • Implementation and administration of VMware ESXi 4.x, 5.x, vCenterfor running Redhat Linux, windows Servers on Production and Development.
  • Working on different blades and different clusters in vCenter.
  • Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
  • Working on Chef Configuration Management Tool written in Ruby which involves automation of Linux Administrator tasks and knife usage.
  • Working with DevOps Chef to automate Data center (Infrastructure Provisioning).
  • Extinctive knowledge of Agile and Scrum background, JIRA Usage, Iteration Management and Metrics Usage.
  • Working on Git and GitHub for Source code control (A Distributed version control system).
  • RPM and YUM package installations, patch and other server management
  • Tech and non - tech refresh of Linux servers which includes new hardware, OS upgrade, application installation and testing.
  • Performing capacity analysis, monitoring and controlling disk space usage on systems.
  • Working on Gap BCP (Business Continuity Planning) /DR (Disaster Recovery) environment for Tier 1 applications.
  • Installing and configuring Apache, JBoss and supporting app teams on Linux production servers.
  • Troubleshooting and Managing Security Alerts/Patch Installations in compliance with Gap Security Standards and Policies.
  • Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
  • Working and performing data-center operations including rack mounting, cabling.
  • Rack, stack and cabling different physical servers on Confidential Proliant DL 380 Gen8p box located at multiple Gap Data centers.
  • Configuring Virtual Interfaces on top of Bonding and vLAN’s.
  • Working on Confidential Integrated Lights-out (iLO) to simplify server setup and administration.
  • Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
  • Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
  • Installed, Configured and Worked on Confidential Blade, System Insight Manager (SIM) 6.0/VCEM(Virtual Connect Manager), Confidential ILO 3.1, ILO Logs, Blade Firmware Update, OAT Testing and Flex-10
  • Worked on the Networking side to create VLAN’s and troubleshooting.
  • VMware Operations Support Group, Datacenter Consolidation, Virtualization, Migration and Systems Management. Installed VMware ESX and ESXi Servers on IBM, Dell and Confidential blade servers.
  • Designed and successfully implemented VMware ESXi 5.0 servers for server consolidation.
  • Worked as Technical Lead on various infrastructure projects surrounding Servers consolidation, Physical to Virtual Migrations, Storage and Server Management.
  • Responsible for the management of servers and duties include regular and proactive monitoring of servers, responding the alerts
  • Supported x86 Blade and rack mount servers. Installed/Troubleshoot/Replace hardware/ firmware
  • Worked with users to troubleshoot and solve operational issues. Responsible for coordinating recovery in the event of system failure.
  • Maintained Microsoft Windows Server operating systems and all components/services including AD, DNS, NTFS, DHCP, PRINT SERVICES, FTP, TCP/IP and Citrix.
  • Provide operating system level support to application developers and performing server migrations and on-boarding.
  • Responsible for maintaining and deploying security patches to the server environment

Confidential, St. Louis, MO

Linux Administrator

Responsibilities:

  • Wrote the strategy document, designed and administrated the environment consisting of over 20 ESX hosts and 50 Virtual machines production environment.
  • Designed and successfully implemented VMware ESX servers for server consolidation.
  • Installed VMware ESX server 2.5/3.0/3.5 and created virtual machines on ESX Servers. Created standard images and deployed servers from the images.
  • Extensively working on the All Support activities include DNS, AD, WINS, ISA, MOM and SMS
  • Installed Management Server (VCenter Server) instance to enable centralized management of multiple hosts
  • Creating and managing Virtual Machines and Templates. Working with snapshots of Virtual Machines.
  • Configured VMware on clustered environment, Implemented Migration of Virtual Machines using VMotion, Virtualized Windows servers using VMware Converter, P2V Assistant.
  • Hot and Cold Cloning of Virtual Machines using VMware Converter.
  • Virtual Machine Cloning, Templates and Snapshots.
  • Configured VMware HA, VMware DRS in acquiring higher efficiency for VMware Infrastructure
  • Installed and worked on VMware Site Recovery Manager (SRM 1.0/2.0) for the disaster recovery and managed recovery plans
  • Analyzing the VM-support logs for ESX servers and Virtual Center logs to diagnose the root cause for the problem.
  • Involved in designing network architecture and implementing high quality network
  • Configured and monitored Microsoft SQL server 2005/2008 Databases and perform routine tasks such as performance tuning, indexing and database replication.
  • Configured VPN and Remote Access for clients to login into Company network using Microsoft and SecureID products.
  • Conducted VMware Virtualization Assessments to recommend consolidation scenarios and project cost savings associated with virtualization for clients.

Confidential, Milwaukee, WI

Linux Administrator

Responsibilities:

  • Documented and implemented VMware ESX servers for Virtual Infrastructure Consolidation
  • Installed VMware ESX server 2.5/3.0/3.5 and created virtual machines on ESX Servers. Created standard images and deployed servers from the images.
  • Administered, maintained and monitored Central site with several remote Primary sites based on Windows 2003 Servers in a Windows 2003 Domain and Confidential Proliant Servers.
  • Performed in place upgrades of Windows 2000 server to Windows Server 2003/R2 on Dell Servers -Power Edge 300, 2400, 4300, 4400, 6450.
  • Wrote and maintained technical documentation of the configuration and system maintenance plans for all databases.
  • Creating and configuring VNetwork Standard Switch (vSwitch) and Distributed Virtual Switch (dvSwitch).
  • Upgraded Virtual infrastructure by performing VMware ESX Host and Virtual machine upgrades.
  • Built and deployed multiple new instances of Maintainance server (VCenter Server) for multiple client access.
  • Configuration, Administration and Monitoring HA, Fault Tolerance and DRS Clusters in Virtual center Server 3.0 and 3.5
  • Defined the Patch Management process for the VMware Environment to upgrade the Hosts and VM’s and Successful completion of Update Manager Installation in all the Environments.
  • Providing Technical/Operational assistance and feedback on potential design improvements

Confidential, Houston TX

Linux/Unix Linux Administrator

Responsibilities:

  • Created mount points for Server Directories, and mounted directories on the Servers As per DBA’s and Middleware team requests.
  • Built and Maintained UBUNTU 12.04 LTS Server for testing environment.
  • Deployed UBUNTU 14.04 LTS desktop versions using on test lab laptops using Clonezilla
  • Administration of NFS, NIS, DNS, Samba and Send Mail Servers.
  • Administered VI infrastructure with Virtual Center management server and provisioned VM guests.
  • Responsible for the Data center in a 24*7 Environment.
  • Setup and maintained NFS, NIS, HTTP, SSL, CGI, JSP, LDAP, NIS and TCP/IP network,configured the systems for TCP/IP Networking.
  • Worked with transformational technologies such as Virtualization and Cloud Computing.
  • Provided support for switches and routers.
  • Involved in Security Administration, User Administration, Disk Management, Daily Backupand Restore operations, networking service, performance, and resource monitoring.
  • Provided support for 24*7 productions.
  • Configured and resolved - LAN, WAN and TCP/IP issues and generated reports to show the trends ofResource Utilization, User/CPU/network load.
  • Wrote and modified shell scripts (Perl, C, ksh) & cron to perform automated administrationtask
  • Configured Kickstart server to install Red Hat Linux on multiple machines.
  • Provided security with the using SSH, SSL, IPchains, IPtables, and TCPWrappers.
  • Performed routine check on the systems and using admin tools like admintool, smit, linuxconf, vmsat, iostat, TOP, traceroute, ping and SAR.
  • Done the installation and Configuration of Apache Web server.
  • Install, Update and erase the required packages to provide services using RPM and UP2DATE.
  • Involved actively in Red Hat Satellite Server implementation, and performed Administrative taskssuch as adding users, groups, systems, manage packages using Red Hat Up2date agent & traceback operations.
  • Performance analysis of the environment, documenting solutions in complicated issues.
  • Developed automated processes that run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.
  • Dell Open Manage and DRAC configuration experience.
  • Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.

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