Summary:

• 8 years of experience specialized in System Administration working on Redhat Linux, Solaris, Suse Linux, AIX, HP UNIX and Windows environmentsExcellent skill in AIX administration that consists of installations, performance-tuning troubleshooting, backups, restore, server-builds, Virtualization, HACMP and Disaster Recovery.
• Working experience on Red Hat Enterprise Linux, experience working with various Development Test teams in an Enterprise level environment.
• Installation, configuration administration of Red Hat Linux 8/ 9, Red Hat Enterprise Linux 4x, 5x, 6x, Administrated server consolidation program through use of VMware Virtual Center
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Worked on network connectivity, creating LVM and taking backups.
• Created BASH shell and PERL scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Supported proactive maintenance on systems by timely upgrading Patches to the systems and applications, Scheduling batch jobs and cron jobs.
• Experience in working with Virtualization Technologies like VMware in building and configuring Linux, Solaris servers as a part of cost effective solutions.
• Installing and upgrading Version and Release of all HMC's from 7.3 to 7.7.
• Expertise in Installation, Configuration Troubleshooting VMware ESX 3.5/4.0/4.1/5.0, VSphere 4.0/5.0, Virtual Center 2.5 Servers. Creation of VM's on ESX Servers and installation of hosts and guest OS Windows. Network configuration on ESX servers, which include NIC teaming, Bonding for Failover and Load Balancing purposes. MigratingVirtual Machines across various VMware products like ESX, GSX servers Workstation and VMware servers.
• Upgrading Firmware of all p-Series servers to required level.
• Worked on OS installation AIX via Blade Logic.
• Migrating VIO's version from1.3, 1.5 to 2.1 and 2.2.
• Experience in Migration of HACMP 4.3.1/4.5 to HACMP 5.1 and 6.1.
• Installed and Upgrade Power HA 5.5 to 6.1
• Built and performed various Lpar migrations across different frames.
• Performed numerous OS migrations and TL upgrades.
• Performed and monitored daily tasks such as mksysb backups, failed logins, error report checks/required troubleshooting etcetera.
• Planned and Configured VIO servers and clients from scratch on p570 power6 frames.
• Created SEA on VIO servers and managed VSCSI for disk mapping through VIO servers.
• Worked as an AIX focal for critical Disaster Recovery tests.
• Organized various Knowledge transfer sessions for training new teams in Virtualization.
• Created two node active-passive HACMP clusters and migrated a HA cluster from a power5 frame to a virtualized power6 frame.
• Maintained and managed HA clusters effectively.
• Supported GPFS cluster on AIX server.
• Tested GLVM as a part of Disaster recovery strategy.
• Very skilled at performance tuning and installation of performance measurement tools such as GMON, lparmon etcetera.
• Worked with TSM and SAN teams.
• Effective in working with NFS and related troubleshooting.
• Skilled with NIM restores configuration and troubleshooting.
• Confident with all aspects of user ID administration, SUDO implementation, health checks and audits.

TECHNICAL SKILLS:

Operating Systems: RHEL 3/4/5, 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, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump..

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

Work Experience:

Confidential

Sr. Linux/Unix Administrator

Responsibilities:

• Installation, configuration and Administration of Red Hat Linux Servers and Solaris Servers.
• Applied appropriate support packages/patches to maintain system integrity.
• Automated server building using System Imager, PXE, Kick startand Jumpstart
• Administration of RHEL 3, 4, 5, which includes installation, configuration, testing on both physical and virtual machines.
• Configured the yum repositories for installing and updating the packages on the Red Hat Linux.
• Installed and configured WebSphere Application server 5.x/6.x, Apache/IBM HTTP server on Linux and Solaris.
• Installed and configured MySQL and oracle database on Linux servers.
• Expertise in Logical Volume Manager LVM , Configured volume groups and logical volumes, extended logical volumes for file system growth needs using LVMcommands.
• Configured the Raid disks from the bios for creating the File systems.
• Setup and configure failover load balancing using IP bonding for network cards.
• Working on Volume management, Disk Management, software RAID solutions using 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.
• Expertise in using scheduling tools such as ControlM and Autosys for setting upjobs for backups and monitoring processes.
• Experience in configuring and upgrading the device mapper Multipath software on the Servers.
• Create the new VMs from the template and complete the built process as details provided by the Customer.
• Adding of new Luns to the servers and configured them for the creation of file systems.
• Expertise in creating and configuring ASM disks.
• Worked with DBA teams for Migrating Oracle 10G to 11G and performed the test to for the DB connection.
• Installed Keon Security Software on all the servers before they are into production.
• Perform the Linux Kernel upgrades on the server as suggested by the Linux Engineering team.
• Installed and Configured VCS on the servers.
• Identify the HBA WWPN for configuring tape drives and working close with SAN admin and also backup teams for identifying the tape drives.
• Configuration and administration of Fiber card Adapter's and handling of SAN both on Virtual and Physical servers.
• Configured Tivoli Monitoring tool on the servers along with other monitoring tools like ESM on Linux servers
• Configure and upgrade the Multipathing Software on Linux and Solaris servers.
• Configured SSL certificates for security on NDM application, Generated the keys for the passphrase.
• Knowledge in scripting for automation, and monitoring using Shell, Bash and KSH scripts.

Environment:Red hat Enterprise Linux 3,4,5, Solaris 8/ 9/10, Tivoli Storage Manager, Web sphere application server 5.x/6.x, Tivoli Net backup, Apache/IBM HTTP.

Confidential

Sr. UNIX/ LINUX 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 Redhat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume managment on Suse servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• 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.
• Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Configured/Maintained Zones, LDOM, ZFS filesystem Sun Solaris 10 Servers.
• 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 VERITAS Volume manager Solaris Volume Manager. File system Tuning and growing using VERITAS File System VxFS , coordinated with SAN Team for storage allocation andDisk Dynamic Multi path.
• Fine 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: Solaris 8,9,10, Red Hat Linux AS/EL 4.0, AIX 5.2, 5.3, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1, SVM.

Confidential

Sr.Linux/ Unix Administrator

Responsibilities:

• Administration of RHEL 4.x, 5.x which includes installation, testing, tuning, upgrading and applying patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts, Xen servers.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Installed, manually configured Sun machines through jumpstart installation on Sun Fire and Enterprise servers. Installed, configured Zones, LDOMs in Sun Solaris 10.
• Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIMservers and Upgraded Maintenance level as well.
• Installed and verified that all AIX/Linux patches or updates are applied to the servers.
• Configured HACMP 4.5 to monitor, detect and react to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events.
• Installing, administering Redhat using Xen, KVM based hypervisors.
• Installed and configured glassfish cluster version 3.1 and apache version 2.2 on Centos 6.3 and Solaris 10 Zones.
• Moved all standalone glassfish Servers into a clustered glassfish environment for redundancy purposes RHEL 6.3 and Solaris10.
• RPM and YUM package installations, patch and other server management.
• 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.
• Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, testing.
• Installed, configured, and maintained WebLogic10.x and Oracle10g on Solaris Redhat Linux.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• 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.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• 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, iostat etc and tuned I/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, testing.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Coordinated with the Storage, Network and Hardware teams on server provisions HP Proliant DL385/585 G5, G6 servers, and HP BL 465CG5 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, sitescope, cacti.
• 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.
• Supporting 24x7 production computing environments and providing on-call and weekendsupport.

Environment: Red-Hat Linux Enterprise servers HP Proliant DL 585, BL 465/485,ML Series , Solaris 8,9,10, AIX 5.3, 6.1, SAN Netapp , BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6, ,VMware Virtual Client 3.5, VMware Insfrastructure 3.5.

Confidential

System Administrator

Responsibilities:

• System Administrator for Unix AIX servers
• System Administration of AIX on p690, p650, p630 and RS/6000.
• DNS, DHCP, NFS, NIS configuration with WSM SMIT
• Monitoring of Disk Memory Utilization on AIX
• Configuration of LVM on AIX.
• Experience using LVM creating VGs, LVs, and disk mirroring.
• Patch installations on IBM AIX, Linux servers
• Hands on experience of HMC LPAR.
• Troubleshooting in AIX Environments
• Creating, mirroring, monitoring, maintaining performance File Systems
• User, Super user and Management, security planning and implementation.
• Backup and Restore Management using ufsdump and ufsrestore.
• Disk Space management using Veritas Volume Manager.
• Clustered multiple RS/6000 machines on AIX using HACMP.
• Installation, Configuration Upgrade of AIX operating systems running oracle Database.
• Configuration and Administration of DNS, NIS, NIS , NFS, DHCP, FTP, Samba Servers and clients.
• Security layers like SSL, SSH, HTTPS, SFTP.
• Installation and configuration and maintenance of Netscape and Apache web server.
• Configuration and administration of mail server, Sendmail, and SNMP/POP
• 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.
• Installation of Solaris through Jumpstart configuration.
• Backup maintenance through TSM using Tape libraries.
• Planning and setup of Disaster Recovery Servers.
• Developed and deployed backup strategy using TSM environment.

Environment: AIX 4.3/5.2/5.3, Solaris 5.6/5.8/5.9/5.10, SAP R/3, Oracle, JBOSS, Veritas Volume Manager, LVM, HACMP, LAAM, SSH, TSM, Sybase, EMC, SAN, Weblogic, Websphere BMC patrol, Clearcase, TIBCO, Tuxedo, Windows 2003 Advance Server.

Confidential

System Administrator

Responsibilities:

• Installing, configuring and updating Redhat Linux and IBM AIX 4/5 systems.
• Designing System Requirements, Designing Storage requirements, Configuration Management/Change control/Release management.
• Installing Veritas Volume Manager 4.0 and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
• Creating, Resizing and managing online JFS Filesystem for users upon user request using Veritas Volume manager and LVM.
• Patch and Package administration to keep the servers updated with the patches and that implementing packages developed for deployment.
• Installed and Configured SSH for secured access on IBM AIX and Redhat LinuxSystems.
• Installing and Configuring HP-OMNIBACK 4.10 for Backup of more than 30 Servers.
• Installing, configuring various software applications and packages like Apache 1.3.18, WebLogic 7.x, Oracle 9i etc.
• Implementing NIS and DNS naming services and administering the public DNS servers.
• Tuning the Kernel parameters for the better performance of applications like Oracle, WebLogic etc.
• Modifying/ Writing scripts using sh, ksh and bash for day-to-day administration.
• Creating, Deleting and managing user database and their respective directories.
• Performing backups of Production, DIT and Development servers and applying required patches.
• Setting up cron jobs for the user to deploy scripts on production servers.
• Implementing RAID technologies and SAN solutions. Was involved in the configuration of a SAN with McData Switches and Hitachi Data Systems HDS .
• Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Environment, Command line, Current working directory, root directory, executed command.
• Strong scripting knowledge to perform different administration tasks.
• Experience in Shell scripting ksh, bash to automate system administration jobs
• Mentoring junior team members to support production web environment.

Environment: Solaris 8,9,10, Red Hat Linux AS/EL 4.0, AIX 5.2, 5.3, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1, SVM.