OBJECTIVE

• 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 the opportunities and commensurate to the growth of the organization.

SUMMARY

• 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 the Data Center in a 24*7 Environment.
• Install and manage software and hardware RAID to improve fault tolerance and performance.
• Design, setup and Supported the 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 noledge 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 SAN EMC VMAX or DMX Series TIER 2 (T2) Network Attached Storage (NAS) NetApp or EMC ISILON TIER 3 (T3) Backup/Archive DataDomain

Networking Skills: 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

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 the server based on the 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 noledge 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 the 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 Confidential 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 Confidential 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 Confidential 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 the 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 the 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 the 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 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 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 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 wif the using SSH, SSL, IPchains, IPtables, 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.

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 the build specs.
• Build, install and integrate Red Hat AS@5.4 OS on VMware Vsphere and accommodate the hardware resources to the 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 the User Aging and controlling the access permissions of the Users such as“allow scp, deny ssh” access methods.
• Design, setup and Supported the 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 the Red Hat Clients via Channel setup configuredin the Red Hat Satellite Server.
• Troubleshoot the potential issues faced by the Oracle and other Middle-Ware groups and providesudo access to Special Users in the Test & QA domains & provide support while installing the application software.
• Ability to configure all the services including NFS, FTP, Web servers, samba server, RAID (software &hardware Configuration).
• Monitor the Server functionality, generate an accurate report of the statistics of all the built-servers and document the 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 the Servers.
• Involved in automating Data Backup and Restore functions using Tivoli Storage Manager.
• Monitored the performance of the system using ps, prstat, vmstat, mpstat, netstat,iostat and rpcinfo to check the 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 the software development team.
• Install packages using RPM as per the requirements from the 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 the 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.

Environment: RHEL 2.1, Red hat Linux 8/9, IBM x series and HP ProLiant, Windows

Jr. Unix System Administrator 

Confidential

Responsibilities:

• 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 the 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