SUMMARY

• Over 7 years of IT experience as a System Administrator for Red Hat Enterprise Linux, Confidential - AIX, Sun Solaris, SUSE Linux and HP-UX servers.
• Installed, configured, and upgraded Red Hat Enterprise Linux 3.x, 4.x, 5.x on HP Proliant, Confidential System X and Dell PowerEdge Servers.
• Strong sense of urgency providing troubleshooting support in critical 24X7 production and development environments.
• Designed and implemented server cluster using Red Hat Enterprise Linux cluster suite for RHEL5 servers.
• Configured and Implemented clustering on Sun Servers using Veritas Cluster Server (VCS) & Sun-Cluster.
• Experienced in working with SAN hardware from vendors including Netapp, EMC (Symmetrix and CLARiiON), Hitachi and Sun StorageTek.
• Installed, configured and maintained Veritas Volume Manager (VxVM), Sun volume Manager, Logical Volume Manager.
• Experienced in using Veritas NetBackup 6.5 with proficiency in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio.
• Performed server consolidation and virtualization using VMware ESX 3.5/4 and created VMs on VirtualCenter server and installed guest OS using Virtual Infrastructure Client.
• Expert in Shell, Perl scripting and experienced in using text processing tools like Grep/Sed/Awk.
• Implemented OpenSSH based security for the RH-4 and Solaris10 machine.
• Installed and configured network based services such as NIS, NFS, DHCP, DNS, FTP, SFTP, SSH, RSH, Samba & Send mail.
• Installed, maintained, upgraded and supported Apache and JBoss application servers on Red Hat Linux systems.
• Deployed Oracle 10G RAC with Cluster Ready Services (CRS) on various UNIX and Linux Servers.
• Expert in Kickstart, NIM, Jumpstart, Ignite, AutoYast Installation Methods.
• Created and Implemented Global and Non-Global Zones in Solaris 10 on Sun SPARC servers.
• Created and Maintained Domains on Sun SPARC M5000 and LDOMS on Sun SPARC T2000/T5240 Servers.
• Experienced in Configuration of LPAR using HMC and installed the OS using NIM server.
• Experienced in configuring Dynamic LPAR Confidential Servers.
• Supported WebSphere Application Server, Confidential HTTP/ Apache Web Servers in AIX environment for various projects.
• Good experience and understanding of Storage Area Network (SAN) technology including zoning, creating disk pools and virtual disks on various systems, maintaining and configuring various fiber switches and storages.
• Expertise in implementation and designing of Disaster Backup and Recovery Plan.
• Experienced in working with different teams such as Network Engineering., Database team and application teams to resolve the issues and provide Customer Satisfaction.
• Efficiency in installing, configuring and implementing the RAID Technologies using various tools like Veritas Volume Manager and Logical Volume Manager.
• Strong background in creating and maintaining User Accounts, Profiles, Security Rights, Disk Space and Process Monitoring.
• Expert in installing, configuring and maintaining Apache Tomcat, Lplanet, WebSphere Application Servers.
• Configured HACMP for a clustering environment on AIX servers and administered the virtualization environments consisting VIO servers.
• Used ILO/IMM/LOM for remote access of servers on Linux/Solaris respectively.
• Experienced with the installation and configuration on Apache 2.x, 1.3.x, 1.2, JBoss4.0.x Web Servers and, BEA WebLogic 8.x, 9.x servers.
• Experience in Installation, Configuring, Monitoring Z-OS and Z-VM on Confidential Mainframe Servers.
• Experience in Installing and configuring Wireless network using SSL Certificate and RADIUS authentication.
• Configured and Troubleshooted TCP/IP network services.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux 3/4/5; AIX 4.3/5.1/5.2/5.3 ; Solaris 2.x/7/8/9/10; SLES 9/10/11; VMware 2/2.x/3.x/3.5/4; HPUX 10.x/11.x; Windows NT 4.0/2000/2003/2008/ XP; OEL 5.5; OVM 2.2.1; XEN

Hardware: Confidential System X 3650/3650M2, 3850/3850M2, Confidential RS/6000 & PSeries, DEC DS20, ES40, Confidential System z9 Enterprise Class server 2094-S08, HP Proliant DL785/G6, Proliant DL980/G7, Sun Fire 280R/V 480/4800/3800/12 K Server, Sun Enterprise T2000, T5220, T5240, M5000, M3000, V490, 480R 4500/6500/450/420 R/250 Server, Ultra Enterprise 2/1Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, HP PA-RISC rp7420,3440,5405 Itanium rx 6600,7640 and 3500, Sun Sparc Ultra 1,5,10, HP-9000, K,L,Nseries, DELL Poweredge 1850,1650,2850,2950,6400, Compaq Proliant DL 385,585, 380 G4/G5 Acer Intel Servers, Backup devices, Jukebox, Ethernet Hubs, Repeaters, Routers, LAN Testers, Terminal Servers & Print servers, EMC Symmetric, Hitachi Arrays, Brocade fiber switches, Cisco fiber switches.

Web /Application Server: Tomcat, Apache, Lplanet Confidential RSA/WAS, WebLogic, Jboss, Websphere

Cluster Server: Veritas Cluster, Sun Cluster, Red Hat Cluster Suite

Languages: Shell Scripting (bash, perl, ksh, sh, csh, python), C, C++, Java, .net, XML, PHP, PL/SQL, FlexLM

Server Management: SUN Solstice Disk and Admin Suites, Veritas Netbackup, SMC, BB4, Big Brother, BMC Patrol, Confidential System Director, Nagios, Ganglia, Predict, SW Tool Set, Single Sign On, HP OpenView, Network Node manager, Compaq Insight Server Manager and Intel LAN Desk Manager

Firewall: Cisco PIX Version 5.1, 6.2, Checkpoint 2000 VPN-1/Firewall - 1

Databases: Oracle, Sybase, MYSQL, DB2/UDB, SQL Server

Tape Hardware: Spectrlogic T120, Sun Storage Tek Tape libraries SL500, SL850, DAT & DLT, STK 9940B, 9840B, LTOs

PROFESSIONAL EXPERIENCE

Confidential, Milwaukee, Wisconsin

System Administrator

Responsibilities:

• Installed and configured RHEL 4.3, 4.7, 5.1, 5.2, 5.3 on Confidential Bladecenter servers. Configured Confidential p5,B80,RS6000,520,550,570,590,595,610,690.695 for production, staging and test environments.
• Administered, maintained Red Hat 3.0, 4.0, 5.0 AS, ES, Troubleshooting Hardware, Operating System Application & Network problems and performance issues; Deployed latest patches for Sun, Linux and Application servers, Performed Solaris and Red Hat Linux Kernel Tuning for TCP stack.
• Installing and upgrading Red hat Linux, firmware, failed hardware and system support software HP Proliant Servers.
• Configured and maintained the HP Proliant Essential Software packages on the PICS and Preload Assist Servers
• Performance monitoring with Sar, Iostat, VMstat, MPstat and Other Tools.
• Disk Space management using VERITAS Volume Manager.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Implemented Virtualization using VMware in Linux on HP-DL585.
• Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Installing and setting up Oracle9i on Linux for the development team.
• Created Servers, User mappings and Nicknames to access DB2 and Oracle databases.
• Installed VMware ESX server on Dell Servers and configured Solaris 9/10/ Red Hat Linux 4.0 / Windows 2000 virtual machines for various applications.
• Installation of software packages and checking the integrity of the installed packages. Installed different RPM Linux 4.0/5/0.
• Administered Linux servers for several functions including managing Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production
• Installed and configured Sudo for users to access the root privileges.
• Integrating UNIX file systems using packages like SAMBA. Setting up printers on UNIX / NT machines to work seamlessly across platforms.
• Installed application connectivity software to enable Confidential print services. Configured and administered firewall rules to effectively monitor system files, port security, and network traffic activity coming through the firewall.
• Assisted other teams for projects like ISS Development, Test and QS environments
• Worked with different hardware and software vendors to troubleshoot the hardware and software problems.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Document backup policies and procedures for backup routines, schedules and restore policies.
• Configured and documented the Preload Assist and PICS.
• Responsible for backup of all servers, and recovery of servers.
• Managing cron jobs, at Jobs, batch processing and job scheduling.
• Able to create and maintain documentation for servers and storage environments.
• Supporting and in-depth troubleshooting of AIX systems 24 x 7 Environment

Environment: Linux, VMWARE, Confidential 8677, Confidential Blade center Servers (HS20, HS21), Lenovo workstation’s (D2, D3, D10, D20), Confidential P520, P550, P560, P570, P575, P595, Confidential IntelliZpro-9228, MAC pro workstation’s, DELL Poweredge 1650,2850,2950,6400, SUN SPARC workstations (A21, A22, A70, A89), NFS, NIS, DNS,PICS, Preload Assist Servers.

Confidential, Dallas, Texas

Unix/Linux Administrator

Responsibilities:

• Installation, configuration and OS upgrades on Red Hat Linux 4.x, 5.x; AIX 5.2/5.3/6.1.
• Configuring Kickstart Servers and booting the images using PXE in Red Hat Linux.
• Installation of patches and other software packages on Linux and AIX Servers.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Configure HACMP for a clustering environment on AIX servers and administered the virtualization environments consisting VIO servers.
• Use ILO/IMM/HMC for remote access of servers on Linux/AIX respectively.
• Administration for multiple Sun hardware, this involves creating domains, adding/deleting system components.
• Administration and Troubleshooting Solaris servers running business critical application & WebLogic applications.
• Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installing, configuring and deploying applications on Weblogic Application Server 8.x, 9.x.
• Installed WebLogic 8.1 with SP5 Server and configured Domains, Admin and managed servers for applications to be deployed.
• Implemented and configured Backup policies and Storage Units using Veritas Netbackup 6.5.
• Managing disk storage with Veritas Volume Manager 3.5/4.1 (VxVM) and Solaris Volume Manager with Veritas File System (VxFS).
• Installation, configuration, and maintenance of Sun Solaris 10 servers.
• Upgrading Solaris 8/9 to Solaris 10 using live upgrade and manual upgrade.
• Performed file system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Experience in internet services installation, configuration and maintenance (WWW on apache, SMTP on sendmail, POP3 and LDAP) on Linux platforms, including security of provided services, ability to troubleshoot common and very uncommon problems, high availability services.
• Experience in Implementation Apache, Tomcat 5.5 for the Java Servlet and Java Server Pages technologies.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN storage.
• Maintained & troubleshooted SAN and Fibre card related errors on UNIX
• Discovered and attached LUNS provided by the Storage team to the required Unix/Linux Servers.
• Maintained & Troubleshooted Storage Disks from Confidential and EMC Disk arrays.
• Created disk pools and configured shared virtual disks using Symmetrix Management Console.
• Installing, maintaining, upgrading and supporting Red Hat Linux systems w/ Oracle 10G RAC with Cluster Ready Services (CRS) and Sybase database.
• Installed and configured LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Administered 8-server Red Hat Linux cluster, 6-server fedora core6 cluster, Confidential DS4300 Storage, Veritas Clustering (VCS) and miscellaneous servers.
• Experience in Servers consolidation and virtualization using UML Linux, XEN and VMware virtual infrastructure, VMware ESX, VMware Vcenter.
• Implemented NIS and NFS for administrative and project requirements.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Tuning the kernel parameters based on the application/database requirement.
• Configuring SUDO and granting root permission to users for performing certain activities.

Environment: Red Hat Linux AS3.0, AIX 4.3/5.1/5.2/5.3 , Sun Solaris 8,9,10, AS 4.0, HPUX 10.x,11.x, SLES 9, 10, Sun Fire 6800, 4800,V890, V880, V490,V480 and V210, Veritas Volume Manager, Veritas Cluster Server, Confidential HACMP V4.5, Websphere ND 5.1, XD 5.1, Weblogic 8.1, Samba, Oracle 9i/10g, Veritas Netbackup 4.5.5, EMC Symmetric, CLARiiON, MYSQL, LVT, NIM, ILO, Samba, Nagios, FlexLM, NT/2000 Server, VMware ESX 3.x/4, LPAR, DLPAR, JBOSS, SAN, NAS, LVT, NIM, ILO, Lplanet, Tomcat, Apache Server 1.x,2.x, Shell Scripting.

Confidential, New York, NY

Unix - Linux Systems Engineer / Admin

Responsibilities:

• Performing the AIX systems administration, installation, troubleshooting, and customization ofAIX 5.1,5.2 machines on pSeries 615, 630, 670 servers, includingclustered (SP) servers. The entire environment included around 40 AIX Servers and 60 additional servers.
• Responsible for Migration of servers from AIX 5.2 to AIX 5.3.
• System & backup management using Veritas Netbackup Server.
• Confidential RS/6000 SP System Software Maintenance AIX System Dump Generation and sending System Dump to AIX System Support Center.
• Installation of Red hat Linux on Dell, Proliant, and Enterprise Server 4.0.
• Installation of web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping. Installation of Oracle10g on Linux, creating database, creating Oracle users & export and importing database, creating roleback segment etc.
• Setup and administration of Lab environment within the datacenter.
• Responsible for Implementing Cloning, Clustering (VCS), Performance tuning and trouble shooting of Confidential WebSphere Application Server.
• Performed WebSphere MQ Messaging administration, monitoring, management and support for AIX and Windows environments.
• AIX systems administration and Disk Management using SMIT.
• Experience in LVM, Kernel and performance tuning on Confidential AIX and Redhat Linux.
• Installation and Administration of TIVOLI Service Desk.
• Managed hardware in Confidential P-series servers using hot-pluggable devices.
• Managing cron jobs, batch processing and job scheduling.
• Software installation and maintenance on AIX and Linux servers. developing and testing a new tcpwrappers package
• Configuring and Administrating of AIX HACMP clusters.
• Tune servers and support Oracle DBAs with installation and Configuration.
• Security, users and groups administration on AIX and Linux.
• Networking service, performance, and resource monitoring
• Performance monitoring with Sar,Iostat,VMstat,MPstat and Other Tools
• Network Monitoring Using Nagios tool.
• Daily backup and restore operations.
• Completed a full migration of UNIX Server (AIX and Linux), including all network services.
• Review Design Documentation confirming to Software Requirements
• Systems administrator providing support for production and development systems. Environment consisted of multiple Confidential RS/6000’s (SP, R-series) and X-Window terminals
• Used perl v5 for systems tasks as well as C and Korn shell scripting.
• Other standard system administration tasks performed, such as system monitoring, performance usage, network support, and user support.

Environment: Red Hat Enterprise Linux 3.0,4.0,5.0, Confidential AIX 4.3.3, 5.1, 5.2, with HACMP 4.3.1 and 4.5, Veritas Netbackup 4.5, Web Logic 8.1, Oracle 9i/10g, WebSphere Application Server 3.5/4.0.x, MQ V5.3, V6.0,Tivoli Storage Manager 5.x,Cron,Batch, Nagios 2.x, C, Korn.

Confidential

UNIX Administrator /Engineer

Responsibilities:

• Installation, configuration & administration of Red Hat Linux 8/ 9, Red Hat Enterprise Linux 3.x/4.x, CentOS, Sun Solaris 8,9 and AIX 5.1/5.2 servers.
• Installed SUN OS versions 2.8, 2.9 on Ultra 5, 280R, 6800, 12K, E450 production servers.
• Installation, upgrades, and configuration of SLES 9/10 OS on Confidential System X servers and Dell PowerEdge servers using AutoYast and CD media.
• Installed and Configured Z-VM on Confidential System z9 Enterprise Class server 2094-S08 for Virtulization.
• Installed and administered Z-OS on System z9 servers.
• Installed and configured Veritas Volume Manager 4.0, Veritas File System 3.5, Veritas Cluster Server 3.5 and Veritas Netbackup Enterprise 5.0 on E450, E12K servers.
• Setup, Configured and Maintained nearly automated installation methods for both SLES and Red Hat (AutoYast and Kickstart) to standardize the Linux install image/configuration
• Created RAID Groups and Storage Groups by using Navisphere Manager.
• Created LUN’s using Navisphere Manager.
• Kernel tuning on AIX systems for Oracle 9i and 10g installations.
• Performed OS and kernel upgrades on AIX and Linux servers.
• Building Servers using NIM from mksysb or SPOT in AIX.
• Implemented Virtualization using VMware in Linux on HP-DL585.
• Performed Logical Volume Manager (LVM), SSA Disk and RAID Management.
• Performed daily backups, restoration of data as per requests from developers using Veritas Netbackup.
• Worked on EMC disk storage to allocate disk space.
• Monitored servers, switches, ports etc with Ganglia monitoring tool.
• Installed/Configured Websphere and other Application Servers.
• Implemented Single Sign On using Open LDAP in enterprise environment
• Managed Linux and AIX user accounts, groups, directories and file permissions.
• Configuration and administration of LDAP, NFS, NIS, NIS+, DNS and sendmail in Red Hat Linux, Confidential AIX, HPUX and Solaris.
• Modification of Shell Scripts as per the Customer requirements.
• Installed software using Installp applying PTF s, Micro codes, updating PMRs, downloading Filesets, ODM, LVM and Disk Management.
• Configuration and administration of HACMP 4.3.1/4.4 using 2/3 node cluster using Cascading, Rotating, Concurrent resource group, PSSP 3.2 Migration.
• Ensured the Systems and Data online, offline, archived Backups on Daily and weekly basis using Maestro and Crontab.
• Capacity planning of disk space and hardware resources required for production and development servers.

Environment: Red Hat 3.x, 4.x, Confidential AIX 4.3.3, 5.1, 5.2, SLES 9, 10, Solaris 8,9,10, Z-OS, Z-VM, Sun Fire 280R/12K/6800, Sun Ultra 5, Sun Enterprise 450, 250, Confidential RS/6000, Confidential System z9 Enterprise server 2094-S08, Websphere, Enterprise Single Sign-on, Veritas Volume Manager, SAN, NAS, VCS, Veritas Net Backup 4.0

Confidential

Unix/Linux Systems Engineer

Responsibilities:

• Performed system administration of UNIX and Redhat servers
• Managing Debian, Suse and CentOS workstations and servers.
• Installation of patches and other software packages
• Disk and File system management through LVM for Red Hat Linux.
• Configuration of Hardware and Software RAID on Digital & Sun Servers.
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Configuration and maintenance of NIS, NFS, DHCP and DNS Servers on Solaris.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Installation and configuration of Oracle 7.x/8.x
• Performed the administration of the DNS and configuration of the Database Files.
• Troubleshooting Backup and Restore problems and performed Day-to-Day trouble shooting for the end users on Solaris based applications.
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network.
• Responsible for Installation of various software components on several servers.
• Installed and Configured sendmail Utility on Sun UNIX Servers.
• Administering NFS Mounts.
• Troubleshooting Backup and Restore problems.

Environment: Red Hat Enterprise Linux3.x, SUSE 8, Debian, CentOS, Confidential -AIX, SunFire X4500/V880/ V480/E420R/E450/E250, Confidential, Sun StorEdge L280, Sun StorEdge A1000, A5000, JBODs Compaq servers, Solstice Disk Suite, Oracle 7.x/8.x