SUMMARY

• Over 8 years of Extensive experience in Linux/Unix system Administration, System Builds, Server Builds, Installations, Upgrades, Patches, Migration, Troubleshooting, Security, Backup, Data Recovery, Performance Monitoring, and Fine - tuning on RHEL 5.x/6.x, SUSE, & Solaris systems and VMware vSphere 4.x/5.x
• To secure a position as a Cloud Infrastructure lead/Architect that will utilize my skill sets and experience in design, installation, supporting and maintenance of Application platform/infrastructure in a large corporation.
• me would also like to work at challenging position where me can bring out my skill and abilities in conjunction wif teh opportunities and commensurate to teh growth of teh organization.
• 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, 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 HP /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 wif different distributions. Checking Kernel Parameters for better Performance Tuning.
• Experience wif 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.
• Responsible for teh Data Center in a 24*7 Environment.
• Install and manage software and hardware RAID to improve fault tolerance and performance.
• Design, setup and Supported teh three node Oracle 10g Real Application Cluster (RAC).
• Experience wif switches and routers from various vendors like Cisco, Dell, and HP.
• Good exposure to Operating Systems, Data Structures, Software Engineering, RDBMS and Project Management
• Good knowledge of UNIX Shell Scripting and solid understanding of networking and security protocols

TECHNICAL SKILLS

Operating Systems: 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

Linux Experience: System Administration Tools, Apache, Squid Proxy Server, Tomcat, Send mail/Postfix, IP Chain/IP Tables.

Virtual Environment: VMware ESXi 5.x +, vSphere, VMware Infrastructure Client, High Availability Virtualization (HAV), Snapshots and Cloning, Physical to Virtual(P2V) and V2V

Hardware: HP ProLiant DL 380,385,580,585 and HP ProLiant Blade BL 460c G7; Dell Power edge and Blades, IBM x series, EMC Symmetrix, Clarion, Jukebox, Ethernet Hubs, Repeaters, Routers, LAN Testers, Cable Modems, Terminal Servers & Print Servers

Backup: Software Tivoli Storage Manager (TSM) Hardware Snapshots on NAS or Datadomain

Data Storage: TIER 1 (T1) Fibre Channel/FCoE/iSCSI SANEMC VMAX or DMX SeriesTIER 2 (T2) Network Attached Storage (NAS)NetApp or EMC ISILONTIER 3 (T3) Backup/Archive

DataDomain: TCP/IP, DHCP, DNS, NFS, NIS, NAS, LDAP, SMTP, SAMBA, BIND, Load Balancers (F5 LTM and GTM), Data center multi-layer switching (Cisco) Campus multi-layer switching (Juniper & Cisco), High-Availability

Security: Syslog/Log Analysis, L3 Firewalls and L7 Firewalls/IPS/IDS

Database: SQL: Oracle 9i,10g,11g; MSSQL Server (2008 R2);MySQL 5.x, Teradata NoSQL: MongoDB, HBase (wif Hadoop)

Enterprise Monitoring: Nagios, CollectD(System), Java JMX, Enterprise Logging (LogLogic/Splunk)

Web/Application Servers: JBoss 5.x,6,7; Tomcat 6.0,7.0; Apache; Web Logic 10.x

Integration/ Middleware: Message Queuing: Websphere MQ/MQ Series - v7.1 Enterprise Service Bus (ESB/ETL) MB v8, DS v8.5

DataPower Languages: C,C++, Java (Sun Java JRE 1.x), Ruby and Python

Configuration Management: System Level OpsCode Chef Application Level Chef, Shell Scripts (Linux, PowerShell)

PROFESSIONAL EXPERIENCE:

Sr. Systems Administrator

Confidential, San Francisco, CA

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 teh server based on teh company policies.
• Working on Chef Configuration Management Tool written in Ruby which involves automation of systems administrator tasks and knife usage.
• Working wif DevOps Chef to automate Data center (Infrastructure Provisioning).
• Working in Agile Project Management environment to deliver high priority, high-quality work.
• Extinctive knowledge of Agile and Scrum background, JIRA Usage, Iteration Management and Metrics Usage.
• Working on gapNetboot automation to register newly created hosts as DNS entries wif teh Infoblox Grid.
• Working on Git and GitHub for Source code control (A Distributed version control system).
• RPM and YUM package installations, patch and other server management
• Working wif project manager and auditing teams to implement PCI compliance.
• 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 wif 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.
• Installing and Configuring Delphix 3.1.3.0 and CISCO Secure ACS 5.4 (Access Control System) in VMWare Virtual Machine.
• Rack, stack and cabling different physical servers on HP Proliant DL 380 Gen8p box located at multiple Gap Data centers.
• Configuring Virtual Interfaces on top of Bonding and vLAN’s.
• Working on HP Integrated Lights-out (iLO) to simplify server setup and administration.
• Extinctive usage of HPSM (HP Service Manager) for maintaining Change Control.
• Preparing servers for Oracle RAC installation which includes tuning teh kernel, agent installation, adding NAS storage.
• Monitoring server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned me/O, memory, etc.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning and testing.
• Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to domain and managing teh groups and user in LDAP, installing and configuring sendmail.

Environment: Red-Hat Linux AS/EL 5.x,6.x;AIX 6.1,7.1 Servers;Solaris, Windows 2008 R2 server; Shell programming; Ruby 1.9; Chef 10.x and 11.x; Jboss 6,7;Apache; Tomcat 6,7; Oracle 11g; DB2;MySQL 5.x; JDK 1.6,1.7; VmWare Virtual Client 5.x; VMware Infrastructure, VMotion

Unix/Linux Systems Administrator

Confidential, Cupertino, CA

Responsibilities:

• Created mount points for Server Directories, and mounted directories on teh Servers As per DBA’s and Middleware team requests.
• Administration of NFS, NIS, DNS, Samba and Send Mail Servers.
• Administered VI infrastructure wif Virtual Center management server and provisioned VM guests.
• Responsible for teh Data center in a 24*7 Environment.
• Setup and maintained NFS, NIS, HTTP, SSL, CGI, JSP, LDAP, NIS and TCP/IP network,configured teh systems for TCP/IP Networking.
• Worked wif 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 production.
• Configured and resolved - LAN, WAN and TCP/IP issues and Generated reports to show teh 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 wif teh using SSH, SSL, IPchains, IPtables, TCPWrappers.
• Performed routine check on teh systems and using admin tools like admintool, smit, linuxconf, vmsat, iostat, TOP, traceroute, ping and sar.
• Done teh installation and Configuration of Apache Web server.
• Install, Update and erase teh 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 teh 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.

Environment: Red Hat Linux 6.2, Fedora Core 1/2, Samba, Shell programming, Jboss 7, NFS, HTTPD, SMTP, SENDMAIL & IMAP Servers

System Administrator

Confidential, Memphis, TN

Responsibilities:

• Planning and implementation of new systems and upgrades to existing systems.
• Installed Red Hat Enterprise Linux using Kick-start PXE-Boot or Red Hat Satellite Server.
• Build file systems for Test/Dev, QA & Production Environments appropriate to teh build specs.
• Build, install and integrate Red Hat AS@5.4 OS on VMware Vsphere and accommodate teh hardware resources to teh Virtual Servers.
• Administered and handled issues related to infrastructure servers such as DNS, NIS and Apache web server integration wif Weblogic in a load balanced environment
• Created & modified teh User Aging and controlling teh access permissions of teh Users such as“allow scp, deny ssh” access methods.
• Design, setup and Supported teh three nodeOracle 10g R2Real Application Cluster (RAC).
• Hands on Experience in Linux administration Support, Performance tuning & monitoring, problem analysis & resolution.
• Manage and deploy appropriate packages for teh Red Hat Clients via Channel setup configuredin teh Red Hat Satellite Server.
• Troubleshoot teh potential issues faced by teh Oracle and other Middle-Ware groups and providesudo access to Special Users in teh Test & QA domains & provide support while installing teh application software.
• Ability to configure all teh services including NFS, FTP, Web servers, samba server, RAID (software &hardware Configuration).
• Monitor teh Server functionality, generate an accurate report of teh statistics of all teh built-servers and document teh necessary patches, upgrades or packages installed.
• Involved in Shell, Perl Scripting for Automated System Management tasks like User accountcreation, file system size monitoring, monitor system resources.
• Created Disk groups, Volumes, Volume Groups, and RAIDs on local disks and SAN disksprovisioned to teh Servers.
• Involved in automating Data Backup and Restore functions using Tivoli Storage Manager.
• Monitored teh performance of teh system using ps, prstat, vmstat, mpstat, netstat,iostat and rpcinfo to check teh CPU utilization, bottlenecks of me/O devices, Memory usage andNetwork traffic.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series, Dell Poweredge R900, R710, RHEL 4/5,VMware 3.5, VSphere 4.0, VMware converter, Oracle 10G/RAC, WebLogic 10.3, SAN/NAS, Cisco N/W tools.

Linux System Administrator

Confidential, Cambridge, MA

Responsibilities:

• Troubleshooting hardware and software problems in conjunction wif DOE Help Center and borough technology staff.
• Hardening Linux servers by disabling unnecessary services and corrected variousvulnerabilities.
• Setup and configured Apache in Redhat.
• Resolve day to day user issues for teh software development team.
• Install packages using RPM as per teh requirements from teh development team.
• Monitoring equipment and work wif Help Center to ensure timely repair and Ticket Tracking.
• Diagnose and troubleshoot system, network & storage infrastructure problems.
• Improving system security by limiting users using unjustified root access
• Implementing Operating System Updates and Performed user account creation, deletion, and configuration.
• Handling CPU panic, disk, memory and other hardware problems wif support Vendors.
• Performance analysis of teh environment, documenting solutions in complicated issues.

Environment: Red Hat Linux 3/4.x, IBM x series and HP Proliant,VMware, Perl Scripting, NIS, NFS, LDAP server, Weblogic,Apache Tomcat, EMC Storage SAN

Linux System Administrator

Confidential, NY

Responsibilities:

• Installation and configuration of RHEL 2.1/3/4 AS/ES using Kickstart PXE boot.
• Trouble shooting various Networking issues related to FTP, NFS, NIS, HTTP, MYSQL, RSYNC and DNS.
• Linux on Dell Power Edge, IBM Blade Server, OS Installation, Patching and Maintenance.
• Dell Open Manage and DRAC configuration experience.
• RAID and LVM configuration.
• Applications running on various Unix platforms such as Sun Solaris 8, Redhat 2.1,3.
• Firewall, FTP, SSH Server Configuration.
• Troubleshoots and resolves problems associated wif operating systems and all connectivity between those systems.
• Develop and implement server-hardening security protocols and apply them to new and existing server infrastructure.
• Writing Shell Scripts for system/application, Application monitoring, Data feeds files transfers & log file analysis.
• Collaborates on projects wif other information systems and technology departments.
• Installation, configuration and administration of 500+ Red Hat Linux servers and support forServers
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Administration of user accounts adding and deleting accounts on Unix systems and assigning rights to various user groups
• Configured and maintained SAMBA for sharing files between Windows and Linux Platforms
• Installed, configured and maintained DHCP server
• Provided intensive support in teh maintenance of SAMBA and NFS having a common volume
• Installed, configured and maintained HTTPD server for Intranet specifications
• Installation, Configuration and Troubleshooting of Linux and Windows Servers
• Maintained system configuration files to handle high volume data
• Setup backup methods like tar, cpio, dump (ufsdump)

Environment: Red Hat Linux 4/5, Samba, NFS, HTTPD & IMAP Servers