SUMMARY:

• 9+ years of experience as System Administrator. Expertise in Linux (RHEL) 5/6/7, Solaris 8/9/10, HP UX 11i and Windows NT/2003/2008 platforms.
• Experienced in installation, support, configuration, performance tuning, troubleshooting, maintenance of Redhat Linux and Solaris using Kick start, Custom Jumpstart Server and Interactive installation.
• Involved in installation, configuration, and administration of RHEL 5x/6.x/7.x servers.
• Installation of Packages, Patch Management, and Upgrades.
• Administrative tasks like cleaning of system log files, var files, removing temp files, checking file systems, scheduling jobs and creation of user accounts .
• Experience in NIC bonding configuration in Linux and UNIX systems to increase the bandwidth or redundancy based on requirement by the application.
• Experience in RAID (Redundant Array Independence Disk) Configuration like RAID - 0, RAID-1, and RAID-5.
• Experience in evaluation, installation, initialization, parameterization, configuration, optimization, standardization and maintenance of high-speed networks for LAN, WANS, Intranet and Internet.
• Expertise in disk/volume/Filesystem management using Logical Volume Manager in Linux, AIX and HP and Veritas Volume manager/Solstice disk suit on Solaris Disk.
• Experience in Storage with EMC (Symmetrix/Clarion), HDS (Hitachi Data System) Arrays and VTL (Virtual Tape Libraries).
• Experience in VMWare. Installation and monitoring Virtual environments with ESX/ESXi servers, Virtual Center and VSphere. Configuring and Administering NIS, LDAP and FTP on Linux
• Experience in troubleshooting Hardware, Storage, Application Bottlenecks, System Recovery, Crash dump analysis and Performance tuning. Experience on webservers such as Tomcat & Apache Server.
• Experienced in automated Linux installations, software distribution, and production deployment using SystemImager tool with Redhat Network Satellite server.
• Oracle RAC and ASM, Installation/configuration of ASM and configuring the ASM disks.
• Capacity planning, performance analysis, uptime & response time analysis.
• Well knowledge in perl scripting and shell scripting using Bourne, Korn, Bash.
• Experience in security hardening in UNIX, Linux and Windows servers.
• Experience in Performance Monitoring of CPU, Memory, Disks, Network.
• Experience in administering well versed Red Hat Enterprise Linux with solid administrative knowledge of Apache and JBoss.
• Hands on experience in the installation, configuration, backup/restore using Veritas Netbackup (NBU) and Tivoli Storage Management (TSM).

TECHNICAL SKILLS:

Operating Systems: Linux Red Hat 5.x, 6.x 7.x, SUSE 10, 11, 12, Cent OS, Confidential AIX 6.1, 5L (5.1,5.2,5.3), Sun Solaris 8.0,9.0,10.0, Windows 2000/2003/2008, VMware ESX/ESXi, HP-UX 11i v2/11i v3

Hardware: Sun Fire V 120/240/440/880, Sun Enterprise E 5000/5500/6500, Sun Fire 6800/4800/3800/880/480, Sun Enterprise T series, M series, Sun Blade, HP-9000 K, L, N Servers, rp3440/rp7440 Server, Confidential RS/6000 /S80 M80, P series 590/610/660, Confidential HP/Dell Blade Server

Storage Systems Software: Solaris Volume Manager, Veritas Volume Manager, Logical Volume Manager

Database: Oracle, DB2, and MySQL

Web application: Apache Server, Tomcat 4.x/5.x/6.x/7/8, JBoss 4/5/6, Web Sphere Application Server 5.x, 6.x, 7.x, 8.x, Web Logic Server, HTML, DHTML, XML

Scripting language: Bash Shell, Korn Shell, and Perl scripting

Monitoring Tools: Remedy, Tivoli, BMC patrol, Nagios and HP open view

Protocols: TCP/IP, UDP, RIP, EIGRP, IGRP, SNMP, SMTP, TELNET, HTTP

PROFESSIONAL EXPERIENCE:

Confidential, Louisville, KY

Sr. Linux Administrator

Responsibilities:

• Installation, Configuration, and OS upgrades on RHEL 6.X/7.X, SUSE 11.X/12.X.
• Responsible for handling day to day task for all the Linux/Unix environmental related servers.
• Cross administer, implement, support, and troubleshoot complex problems in the following environments: VMWare, Linux, AIX, and Solaris.
• Implementing on-going infrastructure maintenance and improvements, including off-hours activities.
• Responsible for backup and recovery operations of various servers.
• Working on volume management, disk management, and software raid solutions using Logical Volume Manager.
• Working with Logical Volume Manager and creating of volume groups/logical and performed Red Hat Linux Kernel Tuning.
• Experience operating in a multi-platform, multi-operating system, multi-component Environment utilizing a large number of server builds and configurations.
• Perform User Account Management, data backups and user's logon support.
• Expertise in scheduling tools such as Control M and Autosys for setting up jobs for backups and monitoring process
• Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS, DHCP, troubleshooting network problems such as TCP/IP, supporting users in solving their problems.
• Perform the Linux Kernel and operating system upgrades on the server as suggested by Linux engineering team.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Worked on YUM configuration to patch the servers to the latest OS/Kernel version.
• Installed/ upgraded patches, firmware, MP, GSP, BIOS and security (Kernel) patches for all HW & OS’s in installed infrastructure.
• Installing GNUPG2 (PGP) on the Linux servers and making sure the Public and Private keys work on the client side for transmitting data.
• Handling tomcat applications performance issues.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID 0, 1 & 5 Levels.
• Creating and maintaining user accounts on NIS environment.
• Experience in shell scripting for doing CRON jobs that run daily to check disk usage and perform cleanup of file systems on different environments.
• Automated process to Install/configure/maintain of networking tools NFS, NTP, FTP, SFTP and troubleshooting.
• Planning and scheduling with hardware vendors for faulty hardware replacement.
• 24x7 support for the servers. Rotating on call pager responsibilities for production environment.

Environment: Red Hat Enterprise Linux 6/7, VMware, Windows, Perl, Python, WAS 5/6/7/8, Splunk, Logical Volume Manager, WebSphere application server 7.x/8.x, Tomcat, Confidential /HTTP, NFS, FTP, NTP, SFTP

Confidential, Corona, CA

Sr. Linux Administrator

Responsibilities:

• Installed/Configured/Managed/Administrated all Unix/Linux servers, includes the design and selection of relevant hardware to support the installation/upgrades of Red Hat (5/6/7), Solaris 8/9/10 operating systems
• Extensive experience in configuring and building RHEL 5/6 /7 servers using Kickstart
• Extensive experience in User Administration with creating users, groups, and giving permissions
• Installing and managing packages using command line utility using RPM and YUM
• Performing servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, up gradation of VMware tools
• Scanning the newly assigned LUNs to the serves and assigning them to volumegroup and creating file systems using Logical Volume Manager (LVM)
• Configured Oracle ASM RAC ONE cluster disks and by synchronizing the emcpower devices between two cluster nodes
• Adding storage to the cluster disks and increasing/ decreasing the filesystem in RHEL
• Upgrading HP ILO & BIOS Firmware as HP recommendation regularly on HP servers
• Administration and support of homogeneous production and development server infrastructure of multiple flavors of Linux and Solaris
• Experience in Solaris 10 zones, ZFS, and installation of packages and patching the servers
• Responsible in building servers from scratch, deployment activities, and environment support including installation, configuration diagnostics, planning and upgrades
• Developed Cron jobs and Shell Scripts (Shell, Python) for automating administration tasks like file system management, process management, backup and restore
• Maintained Load balancing, High availability, Failover functionality, and Disaster recovery included changing IP address of the web and app server machines, which caused change in the virtual host and http transport configurations
• Monitoring of space availability on each file system using the Shell Scripts
• Responsible for installing, configuring, maintaining, upgrading, and troubleshooting EMC powerpath on Redhat Linux and Solaris
• Experience in handling ticketing tool SBM TeamTrack to manage the build flow of the servers
• Working with backup team for the TSM backup & Restore in the Redhat Linux server
• Installation of third party tools like security tool Symantec CSP, Splunk Agent, Confidential License Metric Tool
• Involved in 24/7 on-call rotation for production support. Involved in providing training to offshore team

Environment: RHEL 5.x/6.x/7.x, VMware vSphere, HP Proliant Servers DL series, Tivoli Monitoring, TSM Backup, EMC Powerpath, SBM TeamTrack, Splunk, SCSP, ILMT.

Confidential, Jersey City, NJ

Sr. Unix/Linux Administrator

Responsibilities:

• Installation, configuration and upgrade of Redhat Linux 4/5/6, Solaris 8/9/10, HP-UX 11i and Confidential AIX operating systems.
• Configured and installed Solaris, HP-UX and Redhat Linux Servers using jumpstart, ignite and kick start.
• Implementing file sharing on the network by configuring NFS on the system to share essential resources.
• Worked on building and supporting Solaris 8, 9 & 10 on Sun Midrange platforms and Confidential AIX Midrange platforms.
• Worked on performance tuning in Solaris, Linux & HP-UX.
• Performed package and patching management and debugging in all flavors of Unix & Linux.
• Expertise in capacity planning and migrations in HP-UX.
• Well knowledge in documentation of architectural design and build engineering Documents and SOWs.
• Troubleshooting and analysis of hardware and failures for various Solaris servers (Core dump and log file analysis).
• Installation and configuration of Veritas Volume Manager (VXVM), Veritas file system (VFS). Implementation of RAID techniques and creation disk groups and volumes, plexes using Veritas Volume Manager.
• Managing disks and file system using Veritas Volume Manager (VxVM), Solaris Volume Manager (SVM) in Solaris Servers and using Logical Volume Manager, HP Service Guard in HP-UX and Linux servers.
• Built high-end servers, creating and loading images on Solaris, HP-UX and Linux servers using SystemImager tool
• Installed, configured and managed Oracle Real Application Cluster (RAC) in Solaris, HP-UX and Linux servers.
• Patch and Package administration for installation of patches as per company policy and installation of packaged application.
• Expertise in Global File System (GFS), Creating, configuring and managing clusters in Redhat Linux Servers using GFS
• Installed, configured and managed Redhat Cluster Suite in Linux servers.
• Worked on live upgrades in Solaris and HP-UX servers. Configured and managed Zettabyte File System (ZFS) in Solaris, HP-UX and Linux Servers.
• Performed configuration and troubleshooting of services like NFS, NIS, NIS+, DHCP, FTP, LDAP, Web servers, Samba server, Apache server.
• Planned and implemented migrations from lower end to higher end in OS level and Hardware level in Solaris, HP-UX and Linux servers.
• Configured and managed Redhat satellite Network server, performing package management tasks and errata updates
• RPM package administration using RPM Build.
• Performed Data Backup and Recovery using Veritas Net Backup (VNB).
• Update the systems using Redhat Enterprise Network (RHN), Managing and monitoring through RHN.
• Knowledge of DAS, NAS and SAN concepts and technology. Also got knowledge in HA, Clustering, LAN.
• Responsible for setting up a disaster recovery plan for the servers, which includes in development of programs for synchronized backups.
• Worked on installing and configuring VMware/Esx Servers for virtualizations.
• Performed documentation of architectural design and build engineering documents and SOWs.
• Configured and maintained Network Multipathing in Solaris and Linux.

ENVIRONMENT: Solaris 9/10/11, Redhat Linux 4/5/6, HP-UX 11i, AIX, Sun Enterprise Servers, Sun Fire, Sun T Series, Sun M Series, HP 9000K, L, N class Server, HP & Dell blade servers, Confidential RS/6000, p Series servers, VMware ESXi Server, Oracle.

Confidential, Columbus, OH

Unix/Linux Administrator

Responsibilities:

• Installation, configuration and upgrade of Redhat Linux 4/5, HP-UX 11i, Solaris 8/9, and Confidential AIX operating systems
• Configured and installed Solaris, HP-UX and Redhat Linux Servers using jumpstart, Ignite and kick start.
• Worked on building and supporting Solaris 8, 9 on Sun Midrange platforms and Confidential AIX Midrange platforms.
• Disk and File System management thru Solaris Volume Manager, Logical Volume Manager and Veritas Volume Manager.
• Built high-end servers, creating and loading images on Solaris, HP-UX and Linux servers using SystemImager tool.
• Installed and configured Oracle Real Application Cluster (RAC) in Solaris, HP-UX and Linux servers.
• Patch and Package administration for installation of patches as per company policy and installation of packaged application.
• Expertise in Global File System (GFS), Creating, configuring and managing clusters in Redhat Linux Servers using GFS
• Installed, configured and managed Redhat Cluster Suite in Linux servers.
• Performed configuration and troubleshooting of services like NFS, NIS, NIS+, DHCP, FTP, LDAP, Web servers, Samba server, Apache server.
• Planned and implemented migrations from lower end to higher end in OS level and Hardware level in Solaris, HP-UX and Linux servers.
• Configured and managed Redhat satellite Network server, performing package management tasks and errata updates
• RPM package administration using RPM Build.
• Performed Data Backup and Recovery using Veritas Net Backup (VNB).
• Update the systems using Redhat Enterprise Network (RHN), Managing and monitoring through RHN.
• Worked on installing and configuring VMware/ESX Servers for virtualizations.
• Configured and maintained Network Multipathing in Solaris and Linux.

Environment: Solaris 8/9, Redhat Linux 4/5/6, HP-UX 11i, AIX, Sun Enterprise Servers E5500/E4500, Sun Fire V 1280/480/440, Sun SPARC 1000, HP 9000K, L, N class Server, HP & Dell blade servers, Confidential RS/6000, p Series servers, VMware ESX Server, Oracle

Confidential, Cleveland, OH

UNIX/Linux Administrator

Responsibilities:

• Installed, provisioned and administered servers using Solaris 8 and Redhat Enterprise Linux 3.x and 4.x.
• Worked with 2 and 4 node clusters using Veritas Cluster Server 4.0 and was involved in troubleshooting cluster issues which included service group, resource issues.
• Worked with VMware ESX Server 3.5 and configured VMs for Red Hat Enterprise Linux servers.
• Configured and Troubleshooting for SVM/LVM for Solaris and Red Hat Enterprise Linux.
• Doing Pre Data Center migration checks on Servers running Solaris 8 and Red Hat Enterprise Linux 3.x and 4.x.
• Installed virtualization engine on AIX servers.
• Collecting Pre-Migration Data using Shell Scripts for Solaris and Linux to handle Server Migration each weekend.
• Performed data center migration after testing the plan and working on various Business Continuity and Disaster Recovery scenarios.
• Configured and Reconfigured System Controller (SC) and ALOM on multiple Architecture Sun Servers.
• Installed and updated system firmware, ILO/ILO2 Firmware, and installed patches for the various OS.
• Created file systems, disk groups and volumes, resized file systems using Veritas, SVM, LVM in Solaris 8 and RHEL 4.
• Created shell (bash/Korn) scripts for administration and automation of Solaris and Redhat environments.
• Troubleshooting Sun, Confidential and HP Servers for booting, network, hardware, user and OS related issues.
• Worked with EMC Powerpath, SRDF and SAN Storage Related Issues.
• Provided 24x7 on call and remote support for UNIX/Linux related tasks, issues and responding to users’ tickets through Remedy ticketing System.

Environment: Sun Solaris 8, Red Hat Enterprise Linux (RHEL) 3.x/4.x, Confidential AIX 5.2, Sun SPARC Enterprise T5120/T5220/T5240, Sun Fire V120/V240/V440/V490/V880, E420R/E450, Netra T1, Sun Fire 3800, HP Proliant DL Servers, VMWare, Veritas Volume Manager/Cluster, SVM/LVM, VMware ESX Server.

Confidential

UNIX Administrator

Responsibilities:

• Installing, configuring and updating Solaris 8 servers using media, live upgrade and Jumpstart and Redhat Linux EL 3/4 servers using Kickstart and Windows 2003.
• Creation of Containers, Zones with Solaris and worked on LDOMs on T2000 servers.
• Extensive use of volume management tools like Veritas Volume Manager 4.1 to create disk groups, volumes with RAID architecture and Solaris Volume Manager to create layered volumes.
• Design and implement HP Openview, Network Node Manager remote management systems.
• Worked on the Apache 2.x for the configuration of Name Based Virtual Hosts and IP Based Virtual Hosts and generating SSL Certificates.
• Worked with the Oracle DBA teams for the configuration of file systems, performance tuning of the OS and the installation of Oracle 9i, 10g on both Solaris and Redhat environments.
• Installation of ISV products like Sun One Web Server, Oracle, Vignette, Informatica, MQ Series and WebSphere.
• Performing simple administration of MQ series like starting and stopping the queues, flushing the queues etc.
• WebSphere Installation and Administration including creation of cells and clusters and deployment using deployment manager profiles.
• Creating, Mounting and Troubleshooting NFS File systems on different OS platforms.
• Configuration and maintenance of hub based mail cluster configured for SMTP, IMAP using Sendmail 8.13.7.
• Configuration and administration of DNS servers using BIND 8.4.6 on Linux as the operating system.
• Installed and configured ClearCase 6.x for version control on RHEL 4. Helped with the creation of vobs, branches and trained the users with usage of ClearCase.
• Experience in creating file systems on LUNs zoned from SAN Environments which included NetApp V Series, McData Spherion 4500, HDS 9980v.
• Design, build and manage 24x7 HP Openview Network Operations Center (NOC).
• Administration of DNS servers and troubleshooting.
• Configuring Windows 98/NT/2000 clients for Solaris /NT servers using Samba 2.2.12
• Installed & configured Windows 2003 Server and MS Exchange 2003.
• Configured message stores, MTA along with MSCS for Exchange and SQL 2005.
• Performance tuning of the servers using tools like vmstat, kstat, mpstat, sar.
• Troubleshooting and fixing day-to-day problems related to operating system, application, servers, laptops and desktops and responding to tickets in Peregrine Service Center.

Environment: Redhat Linux 3, 4.x, Solaris 8, HP Openview, Veritas Volume manager 4.1, Veritas Cluster Server 4.0, VMWare, Apache 2.x, SunFire 6900, 4900, v880, v490, v440, v240, v210, Enterprise 450, Sun Blade 100/150, Netra T1, HP DL 385, 580, HP rp7410, 7400, L3000, N4000/V2600, Sun Storage Array D1000, T3, 3510, Storagetek L700, HDS 9980v.