SUMMARY

• Over 7 years of experience in Linux/UnixSystem Administration and Support of various applications on Sun Solaris 8, 9,10, RHEL 4.x, 5.x, 6.x, AIX 6.1/5.3, SUSE LINUX 11.x/10/9, Red Hat Linux 4, 5, 6, SuSE EL 11.x/10/9, vSphere 4.0, 5.0, Cent OS andWindows 2000/2003/2008.
• Experience on Web servers such as IBM Websphere 6.0, Tomcat 5.x/4.x/3.x & Apache Http Server 1.x/2.x, Oracle Weblogic V7/8/9.
• Experienced in installing, upgrading, patching, configuring and administrating Solaris OS (SPARC/x86) with proper release management.
• Worked with Power7/6 frames and installed AIX 6.1.5.3 on lpars.
• Experienced inPerformance Monitoring, Security, Trouble shooting, Backup, Disaster recovery, Maintenance and Support of UNIX systems.
• Created and maintained user accounts, profiles, security, rights, disk space and process monitoring.
• Wrote tools in Perl & shell scripting to gather user data from global network and database systems via parallel SSH connections for user management & made data available across the network via RESTful interface.
• Wrote suite of tools for NIS and local Unix accounts management, keeping user details synchronized across the systems.
• Perl development to interact with LDAP (AD) servers to query & modify person, host &netgroup data.
• Building software packages on Red Hat Linux (RPM)
• Provided support for Unix infrastructure, both in - hours & out of hours on call, dealing with performance, resource, software and operating system issues.
• Written Scripts that will generate reports as per the business
• Written Shell scripts to create users on multiple servers
• Written Shell scripts to check if all the servers have dual SAN paths that are live paths
• Experienced in configuring and supporting Logical Partitions/Micro Partitions (LPAR/DLPAR), via HMC (Hardware Management Console).
• Worked on shell scripts for CPU usage, memory consumption and number of I/O to collect performance stats and troubleshoot issues if needed on Sun Solaris, Red Hat Linux.
• Experience designing and planning HACMP clusters.
• Experience configuring, deploying, and maintaining VIO,LPAR, DLPAR, and HMC.
• Worked on the EMC SAN/NAS Migration from DMX/VMAX to VNX for all the platforms IBM AIX, Red-Hat Linux, Solaris SVM, ZFS and VERITAS Volume Management.
• Proficiency in developing shell scripts from scratch as well as editing existing scripts as per the requirement.
• Experience performing failover testing of HACMP clusters and implementing various failover policies.
• Installed and configured VMware ESX server 3.5, 4.0 and vSphere 4.0 on Dell power edge servers.
• Proficient inhandling Hardware issues,MigrationandDataCenter Operations.
• Experience in writingShell scriptsusingBash, Perl,for process automation of databases, applications, backup and scheduling.
• Managed the user accounts, partitioning, making zones, mounting and maintaining file systems, system security, change management, documents, Performance tuning of Sun Solaris Red Hat Linux servers using tools like vmstat, iostat, sar, top, pmstat, free, prtconf, syststat, iostat, netstatetc.
• Performed Remote system administration using Network protocol tools like ssh, http, rsh, telnet, scp, ftp, sftp, ssl, RSA secure connection and Rlogins.
• Experience with Methodologies ofAgile&Scrum.
• Good experience configuring AIX security settings.
• Experience in Oracle Real Application Cluster (RAC) & configuring DS for RAC.
• Involved in Performance Tuning, Configuring and upgrading SAP R/3 AIX platforms.
• Worked on Backup and Recovery of SAP R/3 systems.
• Workload analysis and Performance optimization in the SAP R/3 environment.
• Performed ERP Hosting AIX Oracle DB and SAP Volume Group Restore on AIX 5.3.
• Responsible for resolving issues related to SAP basis and User Security
• Sap Security and Authorizations
• Assisting SAP Basis team with AIX/Linux and database troubleshooting.

TECHNICAL SKILLS

Operating Systems: Red hat Linux EL 4.x, 5.x, 6.x,AIX 5.3, 6.1 & 7.1,Solaris 7/8/9/10

Virtualization: VIO, LPAR, DLPAR, HMC

Network: NFS & NAS, TCP/IP, DNS, DHCP, LDAP, HTTP, SSH.

Hardware: IBM p5, P6 & P7s series

Backup: mksysb, tar, backup etcClusters HACMP 5.5, RAC

PROFESSIONAL EXPERIENCE

Confidential, San Antonio, TX

Unix/Linux/AIX Administrator

Responsibilities:

• Worked as a lead infrastructure engineer to execute and over see the implementation of various Unix/Linux/AIXprojects.
• Linux and UNIX infrastructure design and management.
• Monitored the systems and administered Servers for day-to-day problems, patches, user administration, and hardware failure, monitoring log files, backup, software up gradation, configuration changes and documentation.
• Wrote suite of tools for NIS and local Unix accounts management, keeping user details synchronized across the systems.
• Perl development to interact with LDAP (AD) servers to query & modify person, host &netgroup data.
• Building software packages on Red Hat Linux (RPM)
• Provided support for Unix infrastructure, both in-hours & out of hours on call, dealing with performance, resource, software and operating system issues.
• Installed, upgraded and configured SUNSolaris 9/10 on Sun Servers usingJumpstartand Red HatEnterprise Linux 5/6 using Kickstart.
• Developed UNIX shell scripts to generate performance matrix of the servers
• Installation and configuration thirty party application like JBOSS, Clearcase, BMC patrol, Oracle 10g, Sybase, db2 (v8, v9), Informix(v9, v11), Control - management.
• Perform trouble shooting on Web and Database application likeWebsphere, Weblogic db2, Informix and oracle.
• Wrote Shell scripts to check if all the servers have dual SAN paths that are live.
• Worked closely with DBAs to install raid, disk areas for Oracle database instance installations, created Bourne shell database startup and shutdown scripts for UNIX servers. Wrote shell scripts for automated installations, to extract logs.
• Developed shell scripts for backups of VIO servers.
• Most of these tasks are performed using native Korn Shell and Perl scripts system resources from one partition to another partition.
• Installed & configured Guest operating system like windows, Redhat 5.x and SUSELinux11.x/10.x/9.x on VMwareESX 4.0.
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Red hat Cluster Server.
• Managed users and groups on a large scale in NIS and LDAP environments.
• Installed and configured LAMP on RHEL 5.x. and also configured and setup SSL and Virtual machines.
• Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Coded variousPerl/Shell scripts to automate backup and recovery.
• Performed UNIX System Administration. Fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.
• UNIX Shell/Perl scripting for job automation. Creating zones for application.
• Installing, Configuring and deploying applications on WebLogic Application Server.
• Performed installation, configuration and maintenance of Solaris 10 with Veritas Volume Manager 5.0 andVeritas Cluster Server 5.1.
• Managed and expanded one of the largest VMware ESX installations.
• Configured the LUNs assigned by the storage administrators, and managed Volumes using Logical Volume Manager (LVM) on Linux. Created ZFS file system in Solaris 10 using Zpool and ZFS and created Veritas file systems 5.0, RAID 0, 1, 5 volumes
• Implemented Oracle RAC high availability application cluster on RHEL 4.5.
• Installed and configured LDOMs on Solaris 10 on T series Servers.
• Developed automated scripts/system monitoring tools/testing tools usingUNIX shell and Perl Scripting.
• Setup and configured KVM on Red hat andXenonSuSE and installed guest OS on KVM andXen.
• Gave sudoaccess to users on Linux boxes and RBAC on Solaris 10 boxes.
• Configured Nagios to monitor the resources on the server farm and support them on a 24x7 basis.
• Design, planning, implementation and management of Advanced virtualized environment and Power VM. Experience on installation and upgrade of VIOS from version 1.1 to 2.2
• Implemented Dual VIO with Link aggregation and used integrated virtual device, Virtual scsi disk through SAN as root disks to VIO-Clients and Fiber card virtualization using NPIV for application Vg. Implemented MPIO and Power path in VIO environment.
• Capacity planning and hardware sizing of servers for IBM pure scale cluster setup.
• Built POWERHA 6.1 clusters and Migrated servers with AIX 6.1
• Migration method SAN disk rezoning via VIO or NPIV
• Configured SAN Storage for AIX Servers.
• Experience in dual VIOS VSCSI mapping and NPIV mapping.
• Provided virtualization support using Red Hat’s KVM platform to manage virtual hosts.
• Installation of RHEL on IBM Blade Servers HS21 and JS22.
• Day to day support and troubleshooting of RHEL.
• Setup NIM master and created LPP & SPOT resources of AIX OS and VIOS and mksysb resource.
• Created LPP Source using CD/DVD on NIM Master.
• Worked on the HACMP 5.5 version, failover the RG to the next node, start and stop the cluster services and HACMP.
• Trouble shooting HACMP related issues, going through the log files Taking HACMP snap using snaputility and recover HACMP topology in case of any disaster
• Performed the HMC up gradation to 7.7.2 version.
• Verifying weblogic server logs for any errors.
• Experienced in applying patches and plug-ins for Weblogic Application Server.
• Start & stop the Oracle cluster services & verify the CRS services
• To verify the CRS logs to troubleshoot the RAC related issues with start & stop scripts
• Responsible for resolving issues related to SAP basis and User Security
• SAP Security and Authorizations.
• Worked on Backup and Recovery of SAP R/3 systems.
• Assisting SAP Basis team with AIX/Linux and database troubleshooting.
• Troubleshooting SAP issues from the O/S level.
• Coordinated for seamless installation and configuration of SAP R/3.

Confidential, Alpharetta, GA

AIX/Linux Administrator

Responsibilities:

• Installed, maintained and upgraded Redhat Linux and Solaris Serversusing kickstart based network installation.
• Configured multiple productionsRedhat 4.0, 5.0 servers across multiple platforms.
• Perl development to create a suite of tools to support the automated provisioning of new Linux and Solaris servers using Sun's JET (Jumpstart Enterprise Toolkit)
• Designed and implemented a build-time configuration management system to provide appropriate configuration to new hosts being provisioned according to rules defined at the server.
• Re-implemented a multi-platform system interrogation agent in Perl (originally in Java), covering system, network, storage and software components. Formatting output as XML.
• Building software packages on Red Hat Linux (RPM) and Solaris (Data stream package format).
• Wrote tools in Perl to login & interrogate Sun ILOM & XSCF & HP ILO via SSH and telnet.
• Wrote tools in Perl & shell to run parallel SSH connections to remediate configs& QA on several thousand hosts.
• Configured and maintained the volume groups, logical volumes using LVM, VERITAS Volume Manager and Solaris Volume Manager.
• Performed High availability designing using VERITAS Cluster Server 5.0 on Redhat Linux and Solaris Servers.
• Supported Oracle 9i, 10g, database server applications on Redhat 4.x, 5.x servers.
• Installed the Redhat 4.0/5.0 operating system and set up the Oracle environment.
• 400+ physical and VMware ESX virtual servers in a mixed Red Hat Linux and Windows.
• Installed, configured and administered Solaris 9/10 using Jumpstart.
• Managed File system using VERITAS volume manager 5.0.
• Added virtual hard drives, NIC cards and memory on Guest OS on Ldoms.
• Responsible for installation, configuration and administration ofRHEL 4,Sun Solaris 9/10 and SLES 9.
• Performed centralized management of Linux boxes using Puppet.
• Migration involved backup & restore and EMC’s Open Migrator, cpio, rsync and cp.
• UpgradedIBM-z/VM 5.4servers to new technology levels, configured LVMs onAIX 5.1, 5.Planned, Installed and configured SUSE Linux Enterprise Serveron Blade Server JS 21 X series 3755.
• WroteUNIX Shell, K-shell, Perl,bashandpythonscripts to perform admin tasks.
• Performed Troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Setup and configured KVM on Red hat andXenonSuse.
• Created pool and file system using Zpoolon Solaris 10.
• Worked with HMC, creating, configuring logical partitions, performing dlpar operations on dlpar nodes, installing OS on lpars.
• Performed NIM updateon the LPP Source.
• Removed corrupted LPP Source from NIM Master using lppmgr.
• Worked with dual VIOS VSCSI mapping.
• Mapping adapters and allocation LUNs to LPARs.
• HACMP Cluster Configuration, Setting up new HACMP environment, Planning, Design, Configuring HACMP networks, Failover testing and verification, Cluster Synchronization, performing HACMP health checks - looking at cluster statistics, observing resource group status.
• Installation and new server build for AIX Operating System
• Monitoring performance of AIX servers, Memory, CPU, Network and Disk activities and analyzing these reports and finding any issues that occur.

Confidential, Grants Pass, OR

AIX/Linux Administrator

Responsibilities:

• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems.
• Provided remote technical support for the AIX software team.
• Responsible for determining hardware and compatibility requirements for installation of application software and different tools.
• Expertise in LDAP Installation, Configuration and troubleshooting.
• Responsible and expertise in installing and configuring and troubleshooting apache and samba server.
• Extensively used LVM, created VGs, LVs, and disk mirroring.
• Setup and configured network TCP/IP on LINUX and AIX servers including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on the Servers.
• Configured cascading, mutual takeover and rotating modes of operation of the HACMP and HACMP products.
• Configured SAN Storage for AIX Servers.
• Responsible for creating LPAR, DLPAR and micro partitioning.
• Expertise in security Administration and Hardware diagnostics.
• Experience in setting up clusters and creating repository queue managers for loadbalancing.Provided 24x7 supports on shift rotation basis.
• Experience in analyzing logs, problem determination, and Recovery and restart.
• System Administration and performance monitoring Task on AIX servers.
• User, Patch and Security Management, Problem determination.
• Troubleshooting booting related issues, creating boot records, working with system maintenance mode, accessing rootvg in system maintenance mode, recovering root password, fixing booting related issues, working with bootlist.
• Disk Storage Management in AIX - Logical and Physical Volume management, configuring disks, working with volume groups, logical volumes, and physical volumes.
• Mirroring volumes groups, logical volumes and working ODM and VGDA and fixing related issues.File system management using LVM.
• Monitoring the system, cpu, memory and disk utilization using topas, sar, vmstat, netstat.
• NFS Administration, exporting filesystems, mounting exported filesytems, working nfs daemons and fixing any mounting issues.
• Configuration of new devices using cfgmgr - faulty disk Replacement incase of any disaster. Working with mirrored logical volumes. Device management, including adding, changing, and configuring physical and logical devices.
• HACMP Cluster Configuration, Setting up new HACMP environment, Planning, Design, Configuring HACMP networks, Failover testing and verification, Cluster Synchronization, performing HACMP health checks - looking at cluster statistics, observing resource group status.
• Trouble shooting HACMP related issues, going through the log files, testing HACMP Heart beat i.e. disk and RS232 heart beat and working with different HACMP Daemons.
• Working on HMC, administering, configuration of VIO, LPAR, DLPAR nodes, resource allocation, moving resources as when required dynamically. Mapping via devices to partitions.
• Working with HMC, creating, configuring logical partitions, performing dlpar operations on dlpar nodes, installing OS on lpars.
• Mapping adapters and allocation LUNs to LPARs.

Confidential

System Engineer

Responsibilities:

• AIX System Administrator for Unix server environment which includes IBM AIX 5.2, IBM AIX 5.3, IBM AIX 4.3, Red Hat Linux and Enterprise servers.
• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems.
• Extensively worked on Performance and Capacity planning
• Prepared a plan for establishing a Capacity Planning Function for their Environment, including staffing, tools, methodology and interrelationship with other groups within the infrastructure, which included AIX & Sun Solaris Unix Servers.
• Developed a Capacity Planning solution for Retail e-Banking environment (AIX & Solaris servers).
• Responsible for Data Center Planning Activities including Performance Tuning & Reporting, Capacity Planning, Configuration Management, Change Management, Problem Management and Facilities Management.
• Installed and configured HMC, LPAR, VIO Server in pSeries servers
• Performed AIX upgrade through NIM servers.
• Migrated AIX servers from B80, and POWER4 hardware to POWER5 virtualized hardware. Configured and troubleshot HACMP.
• Backed up and restored data and implemented AIX service strategy.
• Performed patch installations for IBM AIX servers from NIM servers
• Configured NIM environment and performed network installation of AIX
• Configured IBM AIX servers using SMIT and WSM
• Configured NFS and NIS domain. Unix shell scripting for automation.
• Application and in-house software installations
• Documented and debugged Tivoli Server Performance Prediction tools
• Documented system parameters and Backup and Disaster recovery Processes
• Worked with (Application support, H/W support, vendor support) and getting the problem fixed within the given time frame
• Used acquired skills to prioritize and resolve issues in a timely manner and documented the works performed