SUMMARY:

• Extensive experience working as a System Administrator with over 7 years of real Confidential work in Network Administration and Application Support on Redhat - Linux, SUSE Linux, IBM-AIX and Windows environments.
• Experience in Providing 24X7 On-call Production and Customer Support including trouble shooting problems related to Linux servers and IBM AIX pSeries servers.
• Worked on Planning, Installation, Configuration, Maintenance and Administration of AIX 4.3/5.1/5.2/5.3 and Linux (Redhat & SuSE) and day to day system admin tasks.
• Worked on Setting up printers / remote queues / Info-print management Migration upgrades of AIX (433/51/52/53), including system tuning, security, backup, recovery and upgrades of IBM AIX and Linux.
• Configured Volume groups, logical volumes and file systems on Linux
• Installation of patches, Security fixes, packages on AIX, Linux and Windows NT/2000 Servers
• Extended knowledge in installing AIX in an LPAR environment pSeries including configuring VIOS
• Maintain and use NIM Master for installs and upgrades. Plan and implement service updates.
• Expertise in Planning, Installation, Configuration of IBM HACMP v 5.1, 5.2, 5.3. Including problem-solving and disaster recovery in detecting and reacting to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events. Experience includes TCP/IP Networking Parallel System Sport Programs (PSSP) which supports best practices in HACMP - High Availability Clusters
• Worked on linux part of SAN (SAN arrays HITACHI, EMC), configuration and administration of Fiber card Adapter.
• Experience in Migration of HACMP 4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup.
• Used Hardware Management Console (HMC version 7) to build and partition the P5 and P5+ servers.
• Extensive hands-on background in AIX Logical Volume Manager (LVM), OS Upgrades and Servers Disk Crash Recovery mksysb (AIX)
• Virtualization implementations with VMWare based on linux.
• Experience with enterprise class storage including SCSI, RAID and Fiber-Channel technologies Installation,
• Configuration and Administration of HP Data Protector & Veritas NetBackup.
• Performed User Administration and Hardware setup and support of Storage and managed paging space.
• Experienced in Monitoring system Access and Monitoring servers by using tools like Tivoli, and Concord.
• Installed Web Sphere Application Servers on Linux and AIX.
• Experience in IBM WebSphere Administration and setting up IBM WebSphere Application Servers in the development, testing and production environments.
• Experienced in implementing the workload Management (WLM) using cloning and clustering
• Conducted AIX / Linux System security and auditing and did Performance Monitoring and Tuning
• Possess strong trouble-shooting attitude and business oriented user interface
• Excellent client relation skills and the drive to complete tasks effectively and efficiently where customer services and technical skills are demanded as well as the ability to communicate effectively with all levels of management and the client community.

TECHNICAL SKILLS:

Operating Systems: Linux (RedHat 3.x,4.x,5.x, SUSE 8), IBM AIX 5L(5.1,5.2,5.3), Windows 2000/NT4.0,windows 95/98/ME/XP, VMware ESX 2.x,3

Hardware: IBM RS/6000, pSeries 520, 550, 570, 575, 590, 595, 650, 630,670, M80, S80, H70 and H80, z/VM-9 series, IBM ESS (Enterprise Storage Server), DS8000, IBM 3494, 3583 Automated Tape Library, Brocade, SUN Enterprise 450, SunFire 4500,V880, V480,E420R,E450,E250, HP DL 380s and 580s,EMC Symmetrix, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers DELL Poweredge 1650, 2850, 2950, 6400

Web/Application Servers: Websphere Application Server (WAS)3.5,4.0, Netscape/iPlanet Server, MQSeries, WebLogic, JBoss, Server, IBM HTTP Server, HTML, DHTML, XML, Java Script, JSP, Servlets, EJB

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

RDBMS: IBM UDB2, Oracle 7.x/8.0/9i, MS-SQL Server 7.0/6.5 and MS-Access 97/95

Programming Languages: C, C++, Java, Servlets, Jsp, EJB,VB, JavaScript, HTML, Perl and Shell programming

Applications: HACMP, Samba, Tivoli (TSM), Veritas, NetBackup, Veritas Volume Manager, LVM

PROFESSIONAL EXPERIENCE:

Confidential, Collierville, TN

Unix/Linux System administrator

Responsibilities:

• Performed kick start installation using PXE boot and provisioned using HPSA automation tool.
• Installation with administration of Oracle Enterprise Linux on x86Enterprise Servers for Staging and production with RMAN recovery setup.
• Experience on EMC SAN disk with Linux and HPUX environment servers
• Experience on multipathing using EMC power path
• Experience on database (Oracle, Mysql) with a performance of tuning and troubleshooting.
• Experience with migration of application from different version of OS to Redhat and also solving dependencies issue.
• Experience on Storage RAID from LUN and assigning them to servers.
• Perform Account Management Tasks (Add/Remove Accounts) with some request queue activities.
• Execute backup/restore activities under direction like backup client install, troubleshoot, restore backup
• Provide daily monitoring (7x24x365) of hardware, OS, critical server processes, and other system software services such as backup, file transfer, NTP, etc.
• Involved installing and managing different automation and monitoring tools on Redhat Linux like Nagios
• Experience on installation and configuration of LAMP.
• Activities include user administration; startup and shutdown scripts; crontabs, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux and Solaris systems.
• Implementation of VMware Infrastructure for Windows, SLES 11 & Linux Red hat 5.0 with VMware ESX 4.x,3.5, Virtual Center 2.5 and administered the VMs with VI client.
• Experience in installing, integrating, tuning and troubleshooting Apache, Tomcat and WebSphere application server
• Experience in patching software to keep the servers updated against bugs present in the Operation System as well as other applications like VERITAS Storage Foundation, Web Sphere and Oracle.
• Perform Server decommissioning of servers.
• Experience in Install and configure SSH to enable secure access to the server
• Experience in RT and ITSM(follow change request implementation procedures)
• Experience working with loadzilla,MTP(move to production),load book, EBR on production environment
• Experience booting systems into different run levels for troubleshooting and system maintenance
• Experience in Modification the Linux kernel to add tracing probes for Config access tool.
• Worked on user management and groups, worked on creating the users policy for Databases like Oracle and MySql.

Environment:, Command line, Current working directory, root directory, executed command.

Confidential, Dalla, Texas

Unix/Linux Engineer

Responsibilities:

• Performed installation, configuration and maintenance of Redhat Linux 4.x, 5.x.Handling HP and DELL servers running on Redhat Linux and SUSE Linux 9/10 and Cent OS.
• Linux kernel, memory upgrades and swaps area. Red hat Linux Kick start Installation. Configuring DNS, DHCP, NIS, NFS in Red hat Linux other Network Services.
• Performed daily backups, restoration of data as per requests from developers using Veritas Netbackup.
• Experience in Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX.
• Wrote Shell Scripts as cron jobs and deployment scripts for various reasons in VIM editor.
• Audited the servers after the installation and prepared documents.
• Worked on EMC disk storage to allocate disk space.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Provided Security and troubleshoot the network issues in environment with 2500 users with VPN.
• Installed of all the required Software, patches, documentation, licensing trouble shooting.
• Network Monitoring Using Nagios tool.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Monitoring servers using BMC patrol Express.
• Good understanding of web services software architectural and design issues.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux and AIX.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting
• Implementing RAID 1 and RAID 5 on mission critical servers such as domain controllers and file servers.
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, kickstart and print servers to insure optimal networking, application, and printing functionality.
• Installed and configured Sudo for users to access the root privileges
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements. Analyzed performance issues through PERFPMR.
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.

Environment: Redhat Linux 4.x,5.x, VMware ESX Server 3.5.0, Apache, JBoss, Remedy, EMC Power Path, Nagios,windows 2000/2003,, AIX 5.3, NIS/NFS, DNS, SSH, Nagios, TCP/IP, Enterprise Security Manager,, Weblogic 8.1, Oracle 9i/10g.

Confidential, Austin, Texas

Sr. System Administrator/Engineer

Responsibilities:

• Administered, maintained Red Hat 4.0, 5.0 AS, ES, troubleshooting hardware, operating system, applications & network problems and performance issues
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Installed and configured z Linux on IBM mainframes servers
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers
• Migrated database applications from Windows 2000 Server to Linux server
• Implementation of Samba to help printing and file sharing in the mixed Environment
• Installing and setting up Oracle9i on Linux for the development team
• Installed WebLogic 9i with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Provided production support of Apache and JBoss including installation, configuration, management and troubleshooting.
• Implemented virtualization using VMware in Linux on HP-DL585 and IBM-z/VM series.
• Configured and monitored Splunk monitoring tool
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations
• Installed and configured Nagios monitoring tool to monitor servers
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network)
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux and AIX.
• Installed, configured and administered AIX 4.3.3, 5.1 & HACMP 4.4.
• Upgraded AIX 4.3x to AIX 5L v5.1, 5.2, 5.3
• Performed successful installations, configuration and maintenance of Highly Available Cluster Multi Processing (HACMP)
• Experience in Migration of HACMP 4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production
• Developed Korn and Bash shell-scripts to automate routine activities
• Configured and administrated Lpar’s/DLpars’s.
• Data Warehousing and System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-Series
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Linux and AIX systems
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Provided support by 24x7 shift rotation basis and pager support
• Monitored trouble ticket queue to attend user and system calls, attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment
• Updated data in inventory management package for Software and Hardware products.
• Capacity Planning, Infrastructure design and ordering systems.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.

Environment: Red Hat Linux 4.0,5.0 AS ES, AIX 4.3,5.1,5.2,5.3, HP-DL585, HACMP 4.2.x, 4.4, Veritas Netbackup, SAN Storage, 4.5.5, IBM-z/VM, Oracle 9i/10g,Nagios,Samba, NT/2000 Server, VMware ESX 2.x, LPAR, DLPAR, Korn, Bash.

Confidential, Dallas, TX

UNIX Administrator

Responsibilities:

• Installed, upgraded and configured RHEL 5.x/4.x and IBM AIX 5.x/4.x. This included Kickstart Installation, NIM Installation and CD media.
• Installed/Configured Websphere and other Application Servers.
• Installed, configured and administration of Application Server 6.x, Network Deployment, MQ 5.x, 6.0, Jboss 4.x on Linux, AIX.
• Installed Fix packs on Application Server and added patches using Update installer.
• Installation and configuration of LVM & HACMP on various AIX Servers.
• Installation and configuration of Oracle RAC 11g on RedHat Linux cluster nodes.
• Worked with Oracle Database Administrators and reviewed the required maintenance tasks.
• Installed RPM packages on Linux Servers.
• Managed builds and Deployments, Created Ant Scripts to customize EAR, WAR and JAR files and the application is deployed on WebSphere server.
• Generated HTTP plug-in config and configured with web servers by doing manual edits.
• Used SMIT and LVM commands for administration and Disk Management for IBM AIX based Servers.
• Configured and administrated LPARs.
• Management of Linux and AIX user accounts, groups, directories and file permissions.
• Configuration of DHCP Server on Linux to get the IP Addresses Dynamically.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail in RedHat Linux, IBM AIX and Solaris.
• Configuration and Maintenance of AutoFs in AIX and Linux.
• Configured SAMBA to get access of Linux shared resources from Windows.
• Day to day Linux and AIX hardware support, problem and change ticket implementations, composing scripts, OS builds & upgrades along with day-to-day Storage & UNIX Administration.
• Tested and implemented Root disk mirroring.
• Taking Backup and restoring the data using mksysb.
• Solaris Performance Monitoring and Tuning using iostat, vmstat and netstat.
• Configuration of Secured Shell (SSH) in both AIX and Linux servers.
• Configuration and Administration of Apache Web Server and SSL.
• Creating and managing VM’s through Virtual Centre and VI client.
• Scripting for automating changes during move to speed up process.
• Responsible for Monitoring and fine tuning system and network performance for Linux systems.
• Reviewed Web Server, Application Server Performance Monitoring data using Tivoli Performance Viewer and reviewed historical Tivoli logs for root cause analysis, recurring events and involved in troubleshooting the recurring problems.
• Installed Configured EMC disk devices in AIX servers.
• System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Documenting each step and testing procedures before the migration.
• Take full gathering of data and ensure everything planned and documented so other team members can use it during their support hours.
• Provided 24/7 on call support on UNIX Production Servers. Responsible for maintaining UNIX security on Redhat Linux and IBM AIX.

Environment: Redhat Enterprise Linux 3.0/4.0, AIX 4.3.2, Sun Fire V240, Sun Fire 480, Sun E15K, IBM RS/6000, Veritas Volume Manager, Solstice Disk Suite, Tivoli, WebSphere, Veritas Netbackup, Samba, Oracle 9i.

Confidential, NYC NY

Linux/AIX Systems Engineer

Responsibilities:

• Worked as a System Administrator for AIX, UNIX, and Linux servers
• Configured IBM p5,B80,RS6000,520,550,570,590,595,610,690.695, z/VM 5.4 for production, staging and test environments
• Install and configure DHCP, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers
• Created and managed user accounts, security, Access Control Limits (ACL), permissions, disk space and process monitoring in Redhat Linux and IBM AIX
• Monitored Disk & Memory Utilization on AIX 5.1, 5.2
• Upgraded IBM-z/VM 5.4 servers to new technology levels, configured LVMs on AIX 5.1, 5.2
• Experience using LVM creating VGs, LVs, and disk mirroring.
• Installing and setting up Oracle9i and Websphere on Linux for the development team.
• Implemented Virtualization using VMWare in Linux on HP-DL585.
• Linux kernel, memory upgrades and swaps area. Red hat Linux Kickstart Installation.
• Hands on experience of HMC & LPAR.
• System performance monitoring and troubleshooting in AIX Environments 5.1, 5.2
• Provided logical design and architecture for the enterprise storage network
• Creating users, managing user permission, maintaining User & File system quota in Redhat Linux and AIX.
• User management, security planning and implementation, Backup and restore Management.
• Configured VIO servers and related LPARs through HMC, VIO Server testing
• Created Micro partitioning of processor by dividing physical processor’s computing power into fractions of a processing unit and share them among multiple logical LPARs
• Clustered multiple RS/6000 machines on AIX 5.1/5.2 using HACMP 4.5.
• Installation, Configuration & Upgrade of AIX operating systems running oracle Database.
• Worked with Database administrators to tune kernel for Oracle installations on Linux.
• Clustered multiple RS/6000 machines on AIX 5.1/5.2 using HACMP, configured HACMP cluster to keep applications running.
• Configured cascading, mutual takeover and rotating modes of operation of the HACMP and HACMP/ES products.
• Performing Failovers in HACMP / cluster environment, monitoring servers
• Configuration and Administration of DNS, NIS, NIS+, NFS, Automount, DHCP, FTP, LDAP, Samba Sendmail, Servers and clients. Security layers like SSL, SSH, HTTPS, SFTP
• Installation and configuration and maintenance of Netscape and Apache web server
• Writing Shell scripts for automation of job, system monitoring and error reporting
• Configuration of Hardware and Software RAID, disk replacement and File system recovery
• Worked on EMC disk storage to allocate disk space
• Backup maintenance through TSM using Tape libraries, planned and setup Disaster Recovery Servers
• Drafted shell scripts for automated installations, to extract logs
• Documented backup policies and procedures for backup routines, schedules and restore policies
• Mentored and trained other individuals on the team

Environment: IBM zSeries, z/VM5.1, AIX 5.2 Servers in IBM P570, 550, 570, 590, 595, 610, 690, 695, HACMP 5.3, Suse Linux, IBM DS4300 Storage System, ESS Shark with SAN environment, IBM TSM Tivoli Storage Manager 5.3.4, IBM Tape Library 3584 with LTO 3580 tape drives, TSMW2K Monitoring and Administration Linux 8.0, Linux Enterprise Server, IBM Communication server, Symantec Ghost, Websphere, Oracle.

Confidential

AIX/Linux Administrator

Responsibilities:

• Installed, upgraded, Mirrored and configured RHEL 3.x, IBM AIX 5.1 and Sun Solaris 9.0/8.0 using Kickstart, NIM and Jumpstart Installation respectively.
• Installed, configured WebSphere Application Server 6.0, WebSphere Portal Server in a clustered environment
• Excellent knowledge of Different Installation processes. Mostly worked on Silent Installation using Response file.
• Deployed Portlets manually using Admin Console.
• Deployed Themes and Skins on to WebSphere portal server.
• Maintenance of the WebSphere servers on different UNIX platforms and setting up the development and testing and staging environment for the ongoing application development
• Participated WAS migration from WAS V5.0 to V6.0
• Disk and File system management through Solstice Disk Suite on Solaris.
• Disk Management using different raid technologies in Solaris, AIX and Linux using VERITAS Volume Manager and LVM.
• VERITAS Cluster Installation and Configuration along with Resources and Service Groups Configuration in VCS.
• Configuration and administration of DNS, LDAP, NFS, NIS and Samba in Redhat Linux, IBM AIX and Solaris.
• Network trouble shooting using ndd, traceroute, netstat, ifconfig and snoop.
• Administered and Managed Network Applications and Services like NFS with Hummingbird connectivity V7.1.
• Involved in Configuring DHCP server and giving IP addressing dynamically.
• FTP Server configuration in Linux and done kernel tuning on Linux for play out software
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software and directories & files using access modes.
• Written Shell scripts to run Batch Jobs on AIX servers.
• Provided system performance reporting on a regular basis along with keeping all software at current version levels, and maintaining a log of changes for tracking.

Environment: IBM RS/6000, IBM PSeries, Pentium PCs, Linux Servers, Veritas volume manager, Sun Disk Suite, Veritas Net Backup, Sun Cluster in SAN environment, Oracle 9i, HP-UX, Redhat Linux 3.x, IBM AIX 5.1, Solaris 9.0/8.0, Windows 2003/2000.