SUMMARY

• 8 years of IT experience in large - scale enterprise support. Proficient in all aspects of Server computing Infrastructure Management.
• Experience in Installation, configuration, and System Administration with Linux (RHEL 6/5/4), CentOS (5/6) Solaris (10/9/8), HP-UX (11.x/10.x), AIX (5.x/4.x) and Windows (/ 2008/2003/2000/ ) administration.
• Experience in building Servers using Kickstart for Linux, Jumpstart and Flash Archive for Solaris, Ignite for HP-UX and exposure to NIM for AIX installation.
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies. Reconfiguring RPM database using RPM Build and creating YUM repository in Red hat Linux
• Experience in building Red Hat Network Satellite Server for automated installation of Linux boxes and creating image of Linux system with System Imager that automates Linux installs.
• Experience in installation, configuration and administration of VMware based virtual servers using ESX/ESXi servers, vSphere and Virtual Center.
• Experience in implementing and monitoring High Availability environment using VERITAS Cluster Server, Sun Cluster, Red Hat Cluster Suite and HP Service Guard.
• Experience in installing, configuring the Volume/File system management using VERITAS Volume Manager (VxVM), Logical Volume Manager (LVM), Solaris Volume Manager (SVM) and Veritas File System (VxFS).
• Experience in installing, configuring and maintaining Application Servers like WebSphere and Web Logic, Web Servers like Apache HTTP and Tomcat on UNIX and Linux.
• Extensively worked on administering NFS, NIS, and NIS+, DNS, DHCP, LDAP, Mail servers and Samba servers.
• Extensively worked on Solaris 10 Container technology, responsible for creating, configuring and maintaining ZONES and installing applications on individual zones (global and local zones).
• Performing software installation, upgrades/patches/packages, troubleshooting, and maintenance on UNIX & Linux Servers.
• Experience in configuring Zettabyte File System (ZFS) pools, file systems, snapshots and clones in Solaris and Global File System (GFS) in Linux.
• Experience in User & Security administration, multiple backup & recovery technologies (Snapshots, Disaster Recovery plan) and maintenance of various activities.
• Expertise in configuring IPMP (IP network MultiPathing) in Solaris and Bonding in Linux.
• Capacity planning and recommending hardware for SAN (Storage Area Network) implementation and replacements.
• Experience working on Oracle Real Application Cluster (RAC) database, which provides highly available database solutions and supported MS SQL Server and DB2 teams.
• Experience on Live Upgrade, migrating from UFS root file system to ZFS file root system in Solaris.
• Involved in Data Center Migration for P2P, V2V and P2V environments.
• Implemented Puppet modules to automate configuration of a broad range of services.
• Storage experience in managing NAS, EMC storage arrays and Veritas Net Backup administration (VNB).
• Extensive experience in doing backup to tapes periodically using job scheduling Crontab & at
• Expertise in monitoring System resources and Kernel parameters to enhance the system performance.
• Extensive experience in Shell (Bourne, Korn) and knowledge of HTML, SQL, Perl Scripting.
• Administering operating systems, hardware, and peripheral components, and maintain databases.
• Expertise in designing and implementing LANs, WAN services and IP Addressing schemes.
• Experience working with ITIL process (Change management, release management and problem management, Remedy and working on Remedy and Manage now.
• Excellent Interpersonal and Customer Relational Skills. Proven Communication, Presentation Skills and Leadership Qualities. Good Team player with proficiency at time management, multitasking, able to meet deadlines and handle priorities.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5/6, CentOS 5/6 Solaris Release 2.10/2.9/2.8/2.7, IBM-AIX 5.X, Windows 98, Windows 2000 and NT.

Hardware: HP ProLiant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra’s, V210, V280, V490, V880, V6800 SUN Ray (1g Ultra-Thin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5.

Software: Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster Server 3.5, Veritas NetBackup 6.0, MS-Office/MS-Project.

Web/ Application Server: Tomcat, Apache DB2, Oracle.

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, net stat, NFS, NIS,, RIP, OSPF, BGP, TCP/IP, and tcpdump..

Cluster Environment: Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 4.1.

Programming Languages: C, SQL, HTML, XML, Perl and Shell ProgrammingEDUCATION

PROFESSIONAL EXPERIENCE

Confidential, Philadelphia PA

Sr Linux/Unix Administrator

Responsibilities:

• Administered Red Hat Linux servers 5/6 Supporting, Cent OS 5/6 both production and Disaster Recovery servers.
• Provided support for infrastructure servers, Installation, configuration, maintenance and enhancement of the operating system and system support software/hardware in Redhat Enterprise and CentOS.
• Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for CentOS 5/6.
• Experience on the installation of puppet client on the Redhat servers and CentOS.
• Used Puppet to automate the jobs and Used Puppet tool for managing system configurations
• Designed Modules using puppet and managed automation of installation process.
• Experience working on subversion, GIT
• Wrote puppet manifests for deploying, configuring, and managing collected for metric collection and monitoring.
• Experience working on Nagios to monitor system and Network.
• Experience working on Logical Volume Management (LVM) administration on Linux. Created VGs, LVs, PVs and disk mirroring.
• Configured IPMP, NIC Bonding and Storage Multipathing
• Troubleshooting various problems, logging call with vendors - Oracle, Symantec, Red Hat
• Fixing the hardware failures by coordinating with management and vendors for a uninterruptible delivery
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies. Reconfiguring RPM database using RPM Build and creating YUM repository in Red hat Linux
• Worked on server consolidation and migration from one data center to another data centers. (Migration to Texas)
• Monitor performance and resource utilization of key systems and provide ongoing trend analysis for forecasting future resource requirements.
• Administering operating systems, hardware, and peripheral components, and maintain databases. - Replaced faulty - Disk, Power supply, CPU Fan, HBA cards.
• Debugging issues that are effecting the environment and understanding the root cause and identify a solution.
• Extensively worked in data and database migration from older machine to latest configurations.

Environment: Red Hat Linux Enterprise servers, BladeLogic, Dell PowerEdge R610 SunFire X4100M2 6900,M5000, IBM Blade Servers HS20, HS21, VMware Infrastructure 4.1, vSphere 5.5

Confidential, Memphis TN

Linux/Unix Administrator

Responsibilities:

• Installation, Maintenance, Administration of +1200 and 1100 VMware server and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems.
• Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
• Working on Volume management, Disk Management, software RAID solutions using Veritas Volume manager 4.1/5.1 .File system Tuning and growing using Veritas File System (VxFS), planed, documented and supported high availability, data replication, business persistent, fail-over, failback Solutions using Veritas Cluster Server 5.0 in SAN environment
• Configuring & Administrating ZFS pool.
• Performed quarterly patching for both Linux and Solaris servers.
• Proficient in System software Installation, configuration and administration of NFS & NIS.
• Working as System architect to bring physical servers to production support.
• Worked on creating Oracle ASM disks for new build servers.
• Involved in installation, configuration of Apache Web server, BEA Web Logic and IBM Web sphere and Oracle UNIX, Linux environment
• Involved in new Server Builds with project requirements - RHEL 5/6 servers installed, configured packages, patches, update Kernel parameters as per Application team requirements.
• Resolving end-user issues, recovery of SOLARIS servers, providing RCA for an unscheduled outage. Good exposure troubleshooting Hardware and Operating system related issues.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Worked on Openstack (Havana) creating VMs, security groups, adding resources, creating profiles.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Worked on maintaining the inventory in the ITRC CMDB Database.
• Used Puppet tool for managing system configurations. Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Extensive use of Bash shell for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.

Environment: cisco UCS B-series blade servers, Red Hat Linux Enterprise servers, Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, VMware Virtual Client 4.1, VMware Infrastructure 4.1, vSphere 5.5, WebSphere application server.

Confidential, Baltimore MD

Linux/Unix Administrator

Responsibilities:

• Created Ext4 file system in Red Hat Enterprise Linux and Zeta byte file system (ZFS) in Solaris 10.
• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems..
• Experienced building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Installation, configuration of Oracle RAC for multiple computers to use single database.
• Supported Oracle 10g RAC.
• Remote monitoring and management of server hardware.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
• Used Puppet tool for managing system configurations.
• Deployed puppet, puppet Dashboard for configuration management to existing infrastructure.
• Manage ongoing changes to configuration in puppet.
• Automate configuration through puppet.
• Installed and maintained OpenStack on KVM for cloud based applications.
• Hands on experience on various cloud computing products such as Amazon Web Services EC2 and VPC.
• Built virtualized Linux servers on ESXi, Vsphere and Blade servers to host multiple applications on same chassis across different server hosts.
• Set up Red Hat Linux servers for iSCSI LUN boot instead of using local hard disks.
• Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks.
• Configured Sun servers M4000 and M5000 for operational readiness upon OS installation.
• Set up Linux servers for LAMP implementations and readiness.
• Created File systems from local storage as well as NFS partitions for application portability.
• Created zpools. Exported ZFS from local zones to local zones.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Installed, configured, and maintained WebLogic 10.x and Oracle 10g on Solaris and Red Hat Linux.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Worked on resolving production issues and update Root Cause Analysis
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc)
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to the domain and monitoring them using spectrum, site scope, cacti.

Environment: Red Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential, Nashville TN

Linux/Unix Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Red Hat Satellite server.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
• Installing, administering Red Hat using Xen, KVM based hypervisors.
• Installation, configuration of Oracle RAC for multiple computers to use single database and supported Oracle 10g RAC.
• Set up Linux servers for LAMP implementations and readiness
• Hands on experience on cloud computing product Amazon Web Services EC2.
• Used Jenkins for continuous integration and automation.
• Used Puppet tool for managing system configurations.
• Built virtualized Linux servers using vCenter, vSphere suite on ESXi 4.0.
• Automation of jobs through crontab and autosys.
• Created file systems from local storage as well as NFS partitions for application portability
• Architected Sun servers into different domains based on application demands
• Applied patches and packages on Linux servers using RPM Red Hat Package Manager and yum tools
• Ensured automatic startup of different services by using chkconfig
• Configured Opsware on the servers for event tracking
• Implemented virtual, integrated, management and proxy IPs on the machines to serve different purposes
• Experience making Kernel changes to improve system data throughput
• Installed and configured Apache, MySQL and PHP products on the Linux servers
• Installation & configuration of HP-UX Servers thru ignite server, patch depot management for ignite Server. Installation and configuration of Red hat.
• Installation and configuration of Veritas Volume Manager/File System, LVM and SVM.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with project manager and auditing teams to implement PCI compliance.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Integrating WebLogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on Volume management, Disk Management, software RAID solutions using Logical Volume Manager and VERITAS Volume manager.
• File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Performed performance tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: Red Hat Linux Enterprise Linux 4/5 4, Solaris 9,10, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 & DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1.

Confidential, Houston, TX

Systems Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Solaris, Linux (Red Hat and SuSE), HP-UX, AIX operating system.
• Installation and configured Solaris 10 with Zone configuration
• Experience in configuring Red Hat Cluster Suite, Veritas Cluster Server, and HP Service Guard.
• Installation of patches and other software packages.
• Configuration of NIS, NIS+, DNS, NFS, Sendmail, Samba, Apache for multiple environments.
• Installation, Configuration and Administration of Web Sphere and Web Logic Servers
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Setup and maintained DNS Primary, Secondary, Cache-only servers, DHCP servers and DNS clients.
• Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Installation and configuration of Veritas Volume Manager, LVM, Veritas File System and Veritas Cluster Server.
• Creating and maintaining Users, Disk space, LVMs and Process Monitoring in Linux.
• Package management using RPM and errata using UP2DATE in Linux.
• Experience with Volume creation resizing and troubleshoot to the client’s development/production environment using Veritas volume Manager.
• Managed Physical and Logical volumes, Volume Groups in Linux.
• Extensive working experience in process scheduling, disk and file system I/O, kernel internals, TCP/IP networking.
• Application & Production Support and on call support
• Desktop support provided to end users installation of windows 2003/NT.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies
• Develop, Maintain, update various script for services (start, stop, restart, recycle and cron jobs) Unix based Korn shell, Bash
• Updated & Running the various source codes for migration & updating follow-up the release management.
• Creation of users, mounting home folders and respond to general user queries regarding mounting issues.
• Configured NIS Master and Slave servers and NIS clients.
• Analyze, review and alter existing network to increase operational efficiency or adapt to new requirement.
• Co-ordinate with Backup Operator regarding daily backups, monitoring backup servers and perform database, application and system backup in the absence of the backup operators.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Solaris 9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers, SAN Switches, Apache, Tomcat servers, WebSphere application server.

Confidential

Systems Administrator

Responsibilities:

• Installed RHEL 3.0/4.0 using kickstart and custom building the servers.
• Installed and maintained Security issues.
• Performed all System Administration tasks like cron jobs, installing packages, and patches.
• Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
• Configured and installed Auto mount
• Diagnosing hardware/software problems and provide solutions.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and Auto Fs File systems.
• Troubleshooting system, network and user issues.
• Performing tape backups, archiving and checking data integrity
• Supported back office systems environments.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Creation & Maintenance of user accounts & passwords & profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
• Created LVMs on Linux servers.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.
• Maintaining production critical servers running Solaris UNIX, Linux supporting Oracle database and Web services. Providing 24x7 supports.

Environment: HP ProLiant servers, SUN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris 7/8, Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell P0/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.