SUMMARY

• Over 9 years of experience as a System administrator in Solaris & Linux platforms with hands on experience in Red Hat Linux 4.x/5.x/6, CentOS, SUSE, Sun Solaris (SPARC & x86), VMWare ESX/ESXi and AIX environment.
• Installing, upgrading and configuring SUN Solaris 8, 9, 10 & 11 on Sun Servers Using Jumpstart Servers.
• Worked extensively on SUN SPARC & X86 platforms incluing Sun Fire V440, V120 and V480, V490, Sun Fire X4100, X4170, X4200, X4540, X4440 and X4500, Sun Enterprise Servers T5120, T5220, T5240, T3 - 1, T3-2, M5000 & M9000 servers as well as HP DL G4,5,6&7, HP Blade Enclosures C 7000, HP9000 Series, Dell PE 2600, PE 1900, PE 2800,, PE 2900, PE 2950, PV NX 300 and Lenovo Servers.
• Supported Vblock 300 and 700 HW running Linux and Windows VM environemnts on top of VMWare ESX.
• Experience in Migrations at host level using different software likes Redhat LVM and Veritas Volume Manager.
• Experience working with VMWare ESX 3.5 & 4.1.
• Creating host groups and assigning LUN to RHEL and Solaris servers from HDS SAN devices.
• Configuring and administration of weekly full and daily incremental backups on UNIX servers using VERITAS Netbackup.
• Expertise in disk, file system management, Volume Management using VERITAS volume manager, Solaris Volume Manager, VERITAS File System.
• Supported high availability, data replication, fail-over using Veritas Cluster Server 3.x/4.x in SAN environment.
• Managing Multipathing devices using HDLM and Linux Native multipathing.
• Experienced in troubleshooting of Sun SPARC, RedHat Linux servers using tools like vmstat, iostat, sar, top, mpstat, netstat, ping, prtdiag, prstat etc.
• Creating and managing LPAR and DLPARs.
• Experience in installing, Maintaining and supporting servers running Java.
• Good working knowledge on Confidential HACMP 5.x and NIM Master and Clients.
• Experinece supporting Weblogic servers and PL/SQL.
• Creating and maintaining user accounts, sudo, RBAC, profiles, security, file permissions, rights, disk space and process monitoring.
• Experienced working on SMF, Zones & Containers and have working knowledge of ZFS, LDOM’s.
• Experience in Oracle installation, worked with DBAs on System Performance Tuning for Oracle.
• Extensively worked on configuring & administering NIS, NIS+, NFS, DNS, DHCP, Mail servers.
• Installation and upgrade of various tools, packages, patches. Maintained various level of documentation. Co-ordinated with Incident and change management.
• Excellent troubleshooting skills, performance monitoring, root cause analysis of issues.
• Written and edited UNIX shell scripts (shell, perl) for Job automation.
• Worked with Storage Area Networks for Storage expansion & Fabric connectivity issues.
• Worked on various servers including 24/7 on call, production support.
• Team Player and self-starter possessing effective communication, motivation and organizational skills combined with attention to detail and business process improvements, hard worker with ability to meet deadlines on or ahead of schedule.

TECHNICAL SKILLS

Operating Systems: Redhat Linux 4.x/5.x/6, Sun Solaris8, 9,10 & 11 AIX 4.1/4.3.3/5.1/5.3 , 6.x, HP-UX 0.20/11.0/11.11 , 11.23, VMWARE ESX 3.5, 4.0,Windows XP/NT/2000/2003

SAN Devices: HDS AMS 1000, AMS 2500, USP & USPV, VSP, Cisco MDS SAN Switches

Software: VERITAS Volume Manager 4.x, 5.x, VERITAS File System 3.x/4.1, VERITAS Cluster Server 4.x, Solaris Volume Manager.

Application Servers: Web Sphere Apache, Tomcat, Web Logic, Weblogic, PL/SQL

File System: UFS, VxFS, ext2, ext3, ZFS, JFS.

Backup Tools: VERITAS Netback up 4.x/5.1, TSM

Ticketing Tools: HP Service Manager, Remedy, Peregrine.

Monitoring Tools: Big Brother, Team Quest, Introscope.

Virtualization: Zones, Containers, LDOM’s, LPAR’s.

Hardware: Sun Fire V440, V120, V480, V490, V880, Sun Fire X4100, X4200, X4440, X4140, X4170, X4500, X4540 Sun Fire 2900, 4800, 6900, Sun Enterprise Servers T5120, T5220, T5240, T2000, T3-1, T3-2, M5000 & M9000, HP DL360, 580 G4, G5,&G6, HP C7000 & C60000 Blade Enclosures, HP9000 Series, Confidential Blade center and Dell PE 2600, PE 1900, PE 2800,, PE 2900, PE 2950, PV NX 30.

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Sr. Unix/Linux Admin

Responsibilities:

• Involved in supporting Servers running in Sun Solaris (9/10) & Linux (RedHat 5/6 & SUSE ).
• Was involved in building channels and pushing the packages to master Redhat Satellite Server
• Highly Available and Enterprise Cluster Solutions including implementation of Red Hat Cluster Suite, HP Serviceguard for Linux.
• Provided production support for servers running Solaris 9/10, RHEL 5.x/6 environments.
• Experience with volume manager softwares - LVM in RHEL 5.x/6, SVM in Solaris 10, Veritas File system.
• Experience in performing migrations using host tools like Redhat LVM, VERITAS Volume Manager.
• Creating Solaris 10 zones running on Solaris 10 Global Zone for applications like Apache/Tomcat and Jboss.
• Built several virtual machines running Redhat Linux 5.x/6 using Kickstart.
• Supported legacy servers running Redhat Linux 4.x/5.x/6 and Solaris 8/910.
• Installation/Configuration of VxVM/VCS and solved Solaris, Sun Server hardware, Sun Cluster problems.
• Installation, Configuration and Administration of High Availability Veritas Cluster Servers (VCS), Redhat Cluster Suite (RHCS) and HP Service Guard for failover and redundancy purpose.
• Worked with DBAs for installation of Oracle RAC (Real Application Cluster) on Redhat servers running Redhat Cluster Suite (RHCS) and Global File System (GFS).
• Experience writing shell scripts in Perl, bash, python for automation.
• Administration of Solaris 9, 10/VCS/VxVM.
• Worked with SAN team on the provisioning of storage for the new build server and mounting the SAN and NFS storage to the filesystems with right permissions.
• Creating and ManagingUserandGroup Administrationand Access Privilege Setting withSUDOERS onSolaris,Red Hat Enterprise Linux.
• Maintained change history using ITIL/CMDB.
• Hands on experience setting up DHCP servers and DNS servers in Solaris environment.
• Building Redhat/SUSE Linux servers by using VMware ESX 3.x and also involved in channels and pushing the packages in Redhat Satellite Server
• Experienced in installation, support of database servers with Oracle RAC.
• Involved in migrations at host level using LVM and tools like rsync and robo copy for Windows.
• Involved in patching Solaris and Linux servers to upgrade to the latest supported versions.

Confidential, Arlington, TX

Sr. Linux Administrator

Responsibilities:

• Installation, Configuration & Migration of Unix/Linux operating systems.
• Administered Redhat Linux 5.x/6 servers for several functions including managing Apace Tomcat server, mail server, MySQL database and firewalls in both development and production.
• Worked Primarily on RHEL 4/5/6, CentOS 5.5,SuSE linux and Solaris 10 Operating Systems.
• Clustering solutions for High Availability using tools such as Veritas Cluster Server (VCS), RedHat HA (RHCS), and MSCS
• Setting up NIS/NFS on RedHat servers, setting up JBOSS cluster and oracle 10g cluster, configuring load-balancing on apache, Redhat Linux 4.x/5.x/6.x
• Install, configure and administer Failure Resistant, Linux Highly Available (HA) Clustering Environment with Load Balancing using RedHat Advanced Server.
• Migration and troubleshooting of Veritas Cluster.
• Supported database cluster environments running on Veritas Cluster Server, Oracle RAC etc.
• High availability experience with F5 Load Balancers and Replication.
• Supported Oracle RAC cluster environment.
• Installation, Configuration and support for Redhat Satellite Server.
• Extensive experience with volume management utilities like SVM, VxVM and LVM.
• Used package management tools like mrepo and YUM for supporting various distributions of linux.
• Managed and configured hundreds of servers using Puppet.
• Tuning the kernel parameters based on the application/database requirement
• Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Build channels and pull the packages from master Redhat Satellite Server.
• Strong knowledge on Java processes and web-based architecture.
• Exposure to enterprise inventory management using ITIL.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN .
• Used softwares like Confidential powerpath and Veritas Dynamic Multipathing for connectivity with SAN.
• Experience in Servers consolidation and virtualization using VMware converter, VMware ESX, VMware Vsphere Client.
• Migration of RHEL4.x/5.x, Windows physical servers to VMWare ESX environment using VMWare Converter.
• Support and administer various network infrastructure components to ensure uptime and reliability. Routine administrative tasks, like troubleshooting and correcting problems in the existing network.
• Extensive exposure to networking issues such as Ethernet failures, Network switches, VLAN issues and Fibre cards.
• Managed Apache/Tomcat for Web hosting Applications.
• Configured central login management using OPEN LDAP.
• Experience in monitoring of servers using monitoring tools Nagios Bladelogic.

Confidential, Dallas,TX

Sr Linux/Solaris Admin

Responsibilities:

• Managed SAN environment carrying Confidential arrays like Clariions, DMX & VMAX.
• Installation and configuration of Solaris 10, HPUX 11i V1 & V3, SUSE, Windows and Redhat Linux 5.6 on large distributed environment.
• Implemented SAN replication using HDS Shadow Image & True Copy across multiple locations.
• Experienced managing Confidential arrays using Unisphere.
• Created LDOMS and Zones on Solaris servers.
• Configured Various Network services such as LDAP,NFS, NIS, DNS,NIS,NIS+ and Sendmail in RedHat Linux and Solaris servers.
• Performed zoning tasks on Cisco MDS and Brocade switches.
• Managing Disks/Filesystems using Veritas Volume Manager 3.5/4.1 for Solaris and Logical Volume Manager for RedHat Linux.
• Experience working on Vblock HW to perform ESX and Redhat Installations.
• Experience with working on Vblock Infrastructure to perform Virtualization using VMWare.
• Experience with migration of RHEL 4.x, 5.x from HP Proliant BL465c and Sun Blade x8440 hardware to vblock and HP C7000 Blade Enclosure’s which are connected to HDS VSP arrays.
• Supported Public and Private cloud environment.
• Experience installing and configuring HPUX servers using Ignite.
• Performed P2V migrations of Solaris 9, 10 and AIX 5.3,6.1 to vblock using VMware Converter.
• Performed migrations from Clariions to VMAX using Confidential Open Migrator and Confidential power path
• Installation of VMware ESX and creating Virtual Machines from scratch and from templates.
• Installation and configured SUSE, Red hat 4.x, 5.5, using Kickstart with PXE for LAMP installations.
• Configured yum repository server using Chef on RHEL 5.7 in VMware environment.
• Experience in rpm package installations and updates using yum.
• Experience in supporting applications like webmethods, microstrategy.
• Installing and upgrading VMware tools on VMs with different platforms
• Installation and Administration of Solaris 9, 10 on SPARC and x86 servers Enterprise Servers for test lab, production and disaster recovery setup.
• Involved in heavy Automation using scripting.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Setup Disaster Recovery environment for tier one and tier two servers at DR site. This setup includes creating and configuring virtual clients LPAR, installing AIX images from existing servers and performing DR test.
• 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 AIX systems.
• Implementation of VMware Infrastructure 3 for Linux Red hat 5.5 & Ubuntu with VMware ESX 3.5 & 4.1a and using Virtual Center 2.5 and administered the VMs with VI client.

Confidential - Irving, Texas

Sr. Linux Administrator

Responsibilities:

• Involved in managing Unix and SAN environment like Oracle Solaris, Redhat Linux servers, SAN devices like AMS 2500, USP, USPV & Cisco MDS switches.
• Involved in configuring RAID Groups, pools and Managing on HDS Devices like AMS 2500 & USP & USPV using Storage Navigator and Device Manager.
• Performed day to day activities like zoning on Cisco SAN devices like MDS 9509 & 9513 running SAN IOS.
• Involved in creating LDEV’s on HDP, Raid groups on USPV and experience assigning them to servers by using Hitachi Dynamic Provisioning.
• Involved in assigning LDEV’s to stand alone and Cluster nodes using Storage Navigator and Hitachi Device manager.
• Managing SAN devices on Solaris and Linux using LVM softwares like SVM, ZFS, Veritas and Redhat LVM.
• Involved in Server administration running on RHEL 4.x/5.x, HP-UX 11x and HP Tru64.
• Implemented multipathing using native multipathing and HDLM software on Linux, Soalris & Windows servers to enable multipathing for Hitachi LDEV’s.
• Designed and executed lot of migration activities both at the host level and array level, Involved in preparing Pre Migration and Post migration documents.
• Involved in replication by using Shadow imaging and TRUE on USPV by using HORCM files.
• Experience in Installing and Managing Multipathing software like VERTIAS DMP, Redhat device Mapper and HDLM.
• Involved in Solaris Virtualization using Zones and LDOMs on SPARC and X86 using Solaris 10 & 11 OS.
• Performed SAN migration using host level mirroring and array level using Hitachi TSM softwares for online migrations.
• Involved working on Solaris 10 new topics like Zones, Containers, SMF etc.
• Worked on various user administration activities like adding users, file permissions, groupadd, adding roles, sudo, creating links, mounting and unmounting file systems etc.
• Installation of Oracle database on Red Hat Linux and Sun Solaris 8.0/9.0 and kernel parameter tuning for Oracle database installation.
• Experienced working on Clusters like Windows & Redhat Clustering, Sun Cluster and VERITAS Cluster server (oracle databases etc) for high availability.
• Experience in Upgrading, Installation and configuration of VERITAS products like Storage Foundation Suite and Cluster software.
• Experience in installing backup clients software n Solaris, Linux and Windows and also involved in Supported various backup teams like VERITAS Netbackup and TSM for backup administration.
• Experience in Installation and Upgrade of SSH and SSL Configuration of key based authentication.

Confidential - Arlington, Texas

Unix/Linux Administrator

Responsibilities:

• Involved in installing, Configuring and administration of Linux, Windows, Solaris 8, 9, 10 &11 servers by using Kickstart & Jump Start server.
• Supported various application running on Solaris 8, 9, 10, Red Hat Linux4.x/5.x and AIX 5.x.
• Worked on Patch and Package administration, installed various third party tools on servers.
• Worked extensively on troubleshooting including file sytem full, server panic, network troubleshooting and used various tools like vmstat, netstat, iostat, sar, prtdiag, ping etc.
• Experience in working HDS environment carrying AMS 1000, AMS 2500 & USPV with Cisco MDS SAN switches.
• Involved in configuring RAID Groups and Managing on HDS Devices like AMS 1000 & AMS 2500.
• Managed SAN Switches like Cisco MDS 9509 & 9513 running SAN IOS.
• Involved in creating zones and zonesets on Cisco SAN Switches.
• Creating LDEV’s on USPV HDP’s by using Dynamic Provisioning.
• Adding hosts on USPV and assigning LUN’s to hosts using Storage Navigator and Hitachi Device manager.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x&5.x.
• Responsible for servicing trouble-ticket requests, 3rd-party software installation, and user support, in a homogeneous RHEL and Solaris environments.
• Installing HDLM software on Linux, Solaris & Windows servers to enable multipathing for Hitachi LDEV’s.
• Involved in preparing Pre Migration and Post migration documents.
• Worked on Veritas Cluster server (oracle databases etc) for high availability.
• Installation and configuration of VERITAS Storage Foundation Suite, VxVM.
• Supported various backup teams - VERITAS Netbackup and TSM for backup administration.
• Installation of SSH and configuration of key based authentication.
• Integrating UNIX file systems using packages like Apache. Setting up printers on UNIX / NT machines to work seamlessly across platforms.
• Assisting Development team to provide the information and troubleshooting.
• Installation of BEA Web logic, upgraded to service pack updates, installed web logic patches, configuring and creation new admin & managed servers, start & stop web logic server
• Administration of NFS, NIS, DNS and Send mail servers.
• Installation of Web Sphere, installed related patches, configured and creating new admin & managed servers, start & stop Web sphere server.
• Worked on sharing file system using NFS server and client side mount & unmount.
• Initiating Backups on daily basis and monitoring the scheduled backups.
• Worked on tickets to resolve day to day hardware/software/application bottlenecks.
• Constant Monitoring of System Performance using monitoring tools.
• Worked on HP Service Manager for Incident, Change Management and participated in Root Cause analysis of recurring issues, documented all the activities.
• Installed Solaris 9, 10 on using flashimages standard image CDs and Jumpstart installation.
• Configured the VERITAS clusters to keep the high availability applications running on Solaris and Redhat.
• Participated in Bridge calls, worked with various teams to solve issues related to servers & applications, worked closely with Vendors on Hardware Problems, software issues.

Confidential, Nashville-TN

UNIX Systems Administrator

Responsibilities:

• Supported applications running on Solaris 8, 9, 10 and Linux (Red Hat, SUSE), AIX 5.1/5.3 and HP Tru64.
• Worked on Veritas Volume Manager, Solaris Volume Manager for disk activities, file systems.
• Troubleshooting Veritas cluster server 3.x in SAN environment for high availability.
• Administrative tasks such as System Startup/shutdown, disk replacement, crontab, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Installed and configured web sphere servers running AIX 5.2.
• Worked in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives.
• Experience in handling trouble-ticket of requests, 3rd-party software installation, and user support, in a homogeneous AIX 5.1/5.2/5.3 environment
• Created and configured logical partitions (LPAR) on Confidential p690 systems.
• Setting up the thresholds on the parameters (CPU/Memory/Disk/Network) and alerting the users when the usage reaches the thresholds.
• Implemented NIS and NFS for administrative and project requirements.
• Performed the administration of the Domain Name Server 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, patch management as and when required.
• Supported J2EE application servers like JBOSS and tomcat for installation, configuration, troubleshooting, start, stop, upgrade and code deployments
• Support web servers like apache, Web sphere, Confidential http, SunOne web server and iPlanet
• Setting up Virtual hosts in SunOne web server,Supported Interwoven and Virtuozzo.
• Extensive use of volume management tool using Veritas Volume Manager to create disk groups, volumes with RAID 5, 0.1, 10 architecture and layered volumes.
• Worked with the Oracle DBA team for the configuration of file systems
• Solaris server hardening and worked on various internal client projects.
• Constant Monitoring of System Performance and managed file systems.

Confidential - Dallas, TX

Linux/Sun Solaris - Administrator

Responsibilities:

• Experienced in Installing, Upgrading, Configuring and Administrating Solaris 7, 8 & 9, RHEL on various Sun hardware and Dell HW.
• Used tool for Printers, Applications, Processes, Services, Software Licence Management, Software Installation, Users and Security Management.
• Perform user management, group management and device management in Sun Solaris.
• Experience in Job scheduling, and monitoring of various jobs running.
• Installation of software packages and checking the integrity of the installed packages
• Configured and maintained NIS, NFS, and DNS client
• Performance monitoring and tuning of file systems: By using commands such as SAR, uptime, vmstat, tunefs, sysdef, performance of the system is monitored
• Use of ufsdump and ufsrestore to take regular backups of all crucial data and file systems.
• Use of SU command and restricting root to console login. Managing crontabs & automating scheduling.
• Creating and maintaining a Solaris UFS file system and disk slices.
• Administering and Configuring Multi-Unix environment with 1000+ Sun SPARC Servers on heterogeneous network.
• Installation, configuration, monitoring and troubleshooting of Red Hat 3.0 ES.
• Monitoring network activities & optimizing the performance of the Network
• Trouble shooting the connectivity and accessibility issues.

Environment: Sun Solaris 2.x/5.7,8, RHEL 4.x, Windows NT 4.0, Windows ’98, Sun Enterprise 4500, Sun Enterprise 250, Dell PowerEdge, Pentium PCs, Laser Jet Printers.

Confidential

Linux/Solaris Administrator

Responsibilities:

• Installation, Configuration & Upgrade of operating systems Solaris Windows 2000.
• Monitoring System performance and do kernel tuning to enhance the system Performance.
• Configuration of NIS, NFS, sendmail on Solaris.
• Installation of Oracle Database Server.
• Responsible for day-to-day System Administration for SUN SOLARIS, and Windows NT servers.
• Solaris Operating Systems upgrade, package installations, updates, patches and software fixes.
• Responsible for troubleshooting, end user and application problems.
• Creating User accounts, Mail account, groups, printer etc
• Installing operating systems, patches, hardware, vendor software packages, system customization and documentation.
• Monitoring system resources, logs, disk usage, scheduling backups and restore. .
• NFS Management - Take care of user accounts/groups, setting up of NFS Environment. Solving the problems as & when created when NFS data is accessed.
• Configured auto mounts/maps for the user accounts.
• Installation, Configuration of Web Servers using Apache, IIS on Solaris and NT Servers.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.

Environment: Sun 6, 7 and 8, Sun Fire 4500, V880, V480, E420R, E450, E250, Compaq servers, Solstice Disk Suite.