SUMMARY

• Around 8 years of specialized experience in Linux/Unix System Administration, Network Administration and Application Support working on RedHat Linux 4/5/6/7, SUSE Linux 10/11 IBM AIX environments.
• Experience in installation, configuration, backup, recovery, maintenance, and support of Several Unix/Linux Servers.
• Extensively worked on tools like Veritas Volume Manager (VxVM) and Veritas file System, Logical Volume Manager (LVM).
• Good experience in setting up of RAID0, RAID1 (mirroring) and RAID5 for data redundancy using Veritas Volume Manager and Veritas File System.
• Experience in building Servers using Kickstart in Linux andManual installation.
• Experience in implementing High Availability Solutions using VERITAS Cluster and RedHat Cluster Server.
• Good Knowledge on IBM AIX, LPARS and VIO’s.
• Worked on OS migrations, upgrade and BIOS and NIC firmware upgrades.
• Installation and upgrade of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.
• Implemented day - to-day tasks in RedHat Linux include upgrading packages, kernel, and drivers.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in RedHat Linux.
• Experience in configuration of NIS, NIS+, LDAP, DNS, DHCP, NFS, LDAP, Automount, Sendmail, FTP, remote access, Active Directory, Security management and Security trouble shooting skills.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at.
• Experience on webservers such as Tomcat 5.x/4.x/3.x & Apache Server 2.x/1.x
• Experience in Installation of Oracle, MS SQL Server and MYSQL.
• Extensive experience in configuring Global File System (GFS) and Zetta byte File System (ZFS).
• Experience in VMware ESXi5.5 Server to build guest OS using cloning.
• Analyze, troubleshooting, and resolve RedHat Linux and Server HW, Network problems in a Production Server environment.
• Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
• Experience working with production and 24 x 7 on call environments.
• Good team player, strong interpersonal and communication skills combined with self-motivation, initiative and the ability to think outside the box.
• Scripting done in bash and perl for automated tasks.
• Managed Patches, Upgrades and Licensed Products for System software on all flavors of UNIX and Linux Servers.

TECHNICAL SKILLS

Operating Systems: Linux (RedHat 3.x, 4.x, 5.x, 6.x., 7.x SUSE 10,11 Cent OS), 8.0/9.0/10.0, AIX (5.1L, 5.3L) Windows 2000/2003/2008, VMware ESX/ESXi

Hardware: IBM RS/6000, P Series (520, 550, 570, 575, 590, 595, 630, 650, 670, M80, S80, H70 and H80),HP Blade c7000,c3000, DS8000,IBM 3494, 3583 Automated Tape Library, Brocade, HP DL (380s and 580s), DELL PowerEdge (1650,2850,2950,6400).

Programming Languages: Unix Shell Scripting (Ksh/Bash), Perl

Web/Application Servers: Apache Server 2.x/1.x, Tomcat 4.x/5.x, iPlanet, JBoss 4.0.x/4.2.x, Web Sphere Application Server 5.x/6.x, IBM HTTP Server 6.x, WebLogic Server 5.1/ 6.1/7.0/8.1/9.1/9.2, HTML, DHTML, XML.

Cluster: Veritas Cluster Server, Redhat Cluster Server

Applications: HACMP, Samba, Tivoli (TSM), Nagios, Veritas NetBackup, Veritas Volume Manager, LVM, EMC Powerpath.

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

RDBMS: IBM UDB2, Oracle 8i/9i/10g, MS-SQL Server 7.0/6.5 and MS-Access 97/95.

PROFESSIONAL EXPERIENCE

Confidential, Orlando, FL

Unix/VMware administrator

Responsibilities:

• Installing, Configuring and maintaining Red Hat Linux 5, 6 and 7 Environment.
• Performed security updates and patches using the IBM’s BigFix tool.
• Worked on users creating and management.
• Installed the McAFee agents and antivirus on the Redhat Systems
• Performed the installation of CA Control Minder which provides user account privileges and UNIX autantication.
• Installed the Symantec Data Center Security software across the Redhat Systems.
• Knowledge on Oracle RAC clusters and was involved in applying the security updates across the oracle RAC clusters.
• Experienced in User and Group administration and security issues, sudo permissions.
• Writing Shell and Perl Scripting for automation of job
• Adding/expanding new storage to existing/new systems using LVM
• Installing, Configuring VMware ESXi 5.5 Hosts and adding to the Clusters in vCenter.
• Involved in deploying templates and appliances on VMware Infrastructure. Configured storage on different types of platforms.
• Worked on ticketing system called Service Now and change management process.
• Provided 24/7 On call Support.
• Worked on Openstack Cloud environment supporting Windows and Linux instances.
• Analyze, troubleshooting, and resolve RedHat Linux and Server Hard Ware, Network problems in a Production Server environment.

Confidential, Dearborn, MI

Linux /Unix System Administrator

Responsibilities:

• Evaluate, install, test, configure, maintain, tune, and troubleshoot Redhat Linux 4/5/6 operating system software and third party commercial off-the-shelf (COTS) products with primary responsibility being for the UNIX operating systems.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in Linux,
• Worked on Redhat Satellite Server for upgrading and patching Linux Servers.
• Worked on migrating data from EVA, XP to 3-PAR Storage on Linux.
• Package management using RPM, YUM and UP2DATE in Red Hat Linux.
• Extensively worked on tools like Veritas Volume Manager (VxVM) and Veritas file System, Logical Volume Manager (LVM).
• Experience in building Servers usingKickstart in Linux andManual installation.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux.
• Experience in implementing High Availability Solutions using VERITAS Cluster, HP Service Guard and RedHat Cluster Server.
• Extensive experience in configuring Global File System(GFS) and Zeta byte File System(ZFS).
• Installed various software like TWS, COBOL, NPUM/UNIFI, HPSA on Linux.
• Created luns in EVA and presented luns to Linux/Windows Servers.
• Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
• Managed Patching and worked on Firmware Updates for Blades and Enclosures.
• Analyze, troubleshooting, and resolve RedHat Linux and Server HW, Network problems in a Production Server environment.
• Experience working with production and 24 x 7 on call environments.

Environment: RHEL 6.x/5.x/4.x, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x

Confidential, Auburn hills, MI

Linux /Unix System Administrator

Responsibilities:

• Installation, Configuration and Administration of AIX 5.3, and Linux (RHEL 4/5)
• Installed, Configured and Maintained Debian/RedHat Servers at multiple Data Centers.
• Configured RedHat Kickstart server for installing multiple production servers.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux/Debian Servers.
• Hands on experience working with production servers at multiple data centers.
• Involved in writing scripts to migrate consumer data from one production server to another production server over the network with the halp of Bash and Perl scripting.
• Installed and configured monitoring tools munin and nagios for monitoring the network bandwidth and the hard drives status.
• Automated server building using System Imager, PXE, Kickstart and Jumpstart.
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Veritas Cluster Server in Redhat Cluster Server in Linux.
• Automated tasks using shell scripting for doing diagnostics on failed disk drives.
• Configured Global File System (GFS) and Zetta byte File System (ZFS).
• Troubleshooting production servers with IPMI tool to connect over SOL.
• Configured system imaging tools Clonezilla and System Imager for data center migration.
• Configured yum repository server for installing packages from a centralized server.
• Installed Fuse to mount the keys on every Production server for password-less autantication on Debian servers.
• Installed and configured DCHP server to give IP leases to production servers.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Implemented the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Configured, managed ESX VM’s with virtual center and VI client.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers and also logged to munin monitoring tool for graphical view.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm.
• Installed and configured PostgresSQL database on RedHat/Debian Servers.
• Performed Disk management with the halp of LVM (Logical Volume Manager).
• Configuration and Administration of Apache Web Server and SSL.
• Backup management Recovery through Veritas Net Backup (VNB).
• Password-less setup and agent-forwarding done for SSH login using ssh-keygen tool.
• Established and maintained network users, user environment, directories, and security.
• Documented strongly the steps involved for data migration on production servers and also testing procedures before the migration.
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on RedHat Linux.

Environment: RHEL 5.x/4.x, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0,, VM ESX 3.x/2.x/5.x

Confidential

Responsibilities:

• Worked on Red Hat Linux 5, 6 and Cent OS.
• Hands on experience on vCenter, vSphere Client, ESX and OS installation & configuration.
• Proactively and independently resolve issues, yet also function well within a team.
• 24*7 working environment experience.
• Configured, tested, and managed software installs.
• Created and managed user group accounts and account permissions.
• Installed and managed packages using YUM and RPM.
• Monitored system performance using top, ps, netstat, nmon, and cpuinfo to check CPU utilization, network traffic and memory usage.
• Worked extensively with Network File System (NFS) for storage.
• Creating logical volumes, extending the filesystems using LVM.
• Performed automated installations of Operating System using kick start for Red Hat Enterprise Linux 5/6.
• Patch Management, Package Installation/Upgrades and Kernel upgrades.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Remote monitoring and management of server hardware.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.

Environment: HP Blade BL870C,890C i2. IBM pSeries p520, p570, p690 & RS6000, VM ESX 4.x/5.xRHEL 5/6, Cent OS, HP Blade c7000, c3000, HP ProLiant DL (360, 580 G7, 580 G5, 380 G4, G5 ), IBM ( 8840, 9115, 8877 and 7985)