PROFILE

• Total 8 years of Experience and Six years of US IT industry experience in UnixSystem Administration and Support of various applications on Red Hat Linuxand Windows.

• Experienced in Installing, Upgrading, Patching, Configuring and Administrating Red Hat Linux with proper release management.
• Resolving system errors and crashes, huge file sizes, file system full errors.
• Configured Networks using DNS, NIS, NFS,FTP and DHCP, troubleshooting network problems such as Routing, Firewall relatedon TCP/IP providing support for users in solving their problems
• Experience in Install and configuring Kick start in Linux.
• Proficient in System Backup and Recovery from tapes using dump andrestore File system administration.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Troubleshooting of NFS servers, NFS Clients in Auto Mount Environment.
• Experience with Java Enterprise Application Servers such as Web Server and Tomcat.
• Implementation of RAID levels like 0, 1, 0 1, 5 usingLVM.
• Working on shell scripts for CPU usage, Memory consumption and number of I/O to collect performance stats and troubleshoot issues if needed on Red Hat Linux.
• Configure and maintenance of Veritas Volume manager VxVM for Creating Mirroring, striping,Parity,New File Systems, Mounting and Unmounting and data replication of File Systems on Sun Solaris and Red Hat Linux.
• Configured YUM and UP2DATE to install and upgrade RPM package using RHN and local repositories
• Experience working with production and 24x7 on call environments.
• Performed User Administration and Hardware setup.
• Worked on OS migrations, upgrade and BIOS upgrade.
• Experienced in Patches and Packages management.
• Support and troubleshoot hardware and network issue for customers in a global platform.
• Data transfer by using Samba, FTP, SCP, RSYNC and RCP
• Troubleshooting
• Knowledge in Bash and Perl Shell scripting for administration, maintenance and
• Specialized experience in System Administration, Network Administration and Application
• Problem determination and troubleshooting, Security using SSHand Shell Scripting.
• Managing user accounts, Partitioning, mounting and maintaining file systems, system security, change management, documents, Performance tuning of Red Hat Linux servers using tools like vmstat, iostat, sar, top, free, and netstatetc.
• Implementation of RAID levels like 0, 1, 0 1, 5 using VERITAS Volume Manager.
• Adding Disks, Disk Space, Creating Disk groups File systems and Extending File Systems in Veritas Volume Manger

SKILL SET

• Operating Systems: Red Hat Enterprise Linux 3.x, 4.x, 5.x, 6.x, SLES 10.x and 11.0,
• VMware ESX 2.x, 3
• Hardware: IBM X3650 M2/M3, X3850 X5/M2, and DELL PowerEdge
• 1650, 2850, 2950, 2650, 1950, R900, R710, HP DL360, DL 380
• G4/G5/G6.
• Web/App Servers: Apache, Tomcat.
• File Systems: NFS, swapfs, tmpfs, ext3, and ext4.
• Scripting: Shell Scripting, basic Python
• Other Tools: MS Office tools Word, Excel, PowerPoint, Remedy
• Ticketing , Puppet, EMC Power Path, Rear, HP Service Manager
• Software Skills
• Data Warehousing: VERITAS Volume Manager
• High Availability: Veritas Cluster, Oracle RAC
• Backup Storage Manager: VeritasNetbackupEnterprise Server

ORGANISATIONAL EXPERIENCE

Confidential

Role: Red-Hat Linux Administrator.

Responsibilities:

• Worked on LUN configuration on 2, 3-node Oracle RAC clusters.
• Worked on providing login and sudo access to Active Directory accounts.
• Responsible for installation and configuration of Red Hat 4.x, 5.x, 6.x and SUSE Linux
• Enterprise Server SLES 10.x, 11.0 on IBM and HP hardware
• Experienced in deploying, cloning and creating template of virtual machines using

VMware.

• Configure and maintenance of VeritasVolume manager VxVM for Creating Mirroring, striping, Parity, New File Systems, Mounting and Unmounting and data replication of File Systems on Sun Solaris and Red Hat Linux.
• Provided 24x7 on call support for production environment
• Performance Monitoring and Tuning using iostat, vmstat, netstat, sar, ksar, top
• Creating Cron jobs and giving Cron eligibility for administrative accounts
• Responsible for QA of newly built servers
• Configured, troubleshooted and analyzed hardware and software failures using core dump logs.
• Maintained inventory, team Wiki and documentation for all servers
• User management and assist end users with troubleshooting login and password issues
• Groups and Logical Volumes
• Used the LVM extensively for Creating/Modifying/Deleting Physical Volume, Volume
• Deployed latest patches and performed Red Hat Linux Kernel Tuning for Oracle.
• Worked on tools like Yum, RPM for Package management
• Systems director for Hardware monitoring
• Access on Active Directory.
• Configured SUDO to provided SUDO access to various users and group for elevated
• and provided solutions
• Worked with the application team to find root cause for memory leak of their application
• Written bash script for security hardening of the server.
• Built 3 and 4 node Oracle RAC Servers.
• Implementation of RAID levels like 0, 1, 0 1, 5 using VERITAS Volume Manager.
• Adding Disks, Disk Space, Creating Disk groups File systems and Extending File Systems in Veritas Volume Manger.
• Configured SAR and NMON on server to get graphical output for better understand of system health

Confidential

Role: Linux Administrator

Responsibilities:

• Performed, configuration and maintenance of Red Hat 4.x and 5.x on DELL hardware
• Provided 24x7 System Administration support for Red hat Linux 4.x, 5.x servers and
• Resolved trouble tickets on shift rotation basis
• Acquiring Initializing LUNs in clustered stand alone environments
• Deploying latest patches throughout the environment
• Racking and cabling servers of newly purchased servers
• Performed Red Hat Linux kernel Tuning and Performance Analysis
• Configured YUM and UP2DATE to install and upgrade RPM package using RHN and

Local repositories

• Configuration and Maintenance of AutoFS
• Experienced in setting up SSH user and server authentication using certificate
• Authentication
• Worked extensively in kernel tuning for oracle
• Experienced in installing and configuring qmail
• Troubleshooting and root cause analysis with top, ps, ethtool and other commands
• Worked on planning and implementation of migration of RHEL 4.8 to 5.4
• Worked on rsync tool for synchronizing of files
• Well experienced in configuring Software and Hardware RAID
• Worked with Oracle Database Administrators for Installation and configuration of Oracle
• RAC 11g on Red Hat Linux cluster nodes
• Network Monitoring Using Nagios tool.
• Installed and configured the Apache HTTP server and Tomcat HTTP server
• Written shell scripts to automate the administrative tasks
• Involved in administration of Storage Area network SAN administration using EMC

.

Confidential

Role: System Administrator

Responsibilities:

• Responsible for Installation of RHEL servers
• Create, delete and resize file systems using LVM
• User and group creation and administration
• Installation of third party software and rpm packages
• Setting up password less login into Linux servers for users using ssh
• Experienced in troubleshooting critical hardware and software issues and other day-today
• user trouble tickets
• Troubleshoot and fix volume group and file system problems
• Changing file permissions for users and groups
• Installed and removed various packages using rpm and yum command
• Simple bash scripts to automate simple tasks like creating users, creating groups,
• copying files and directories from one servers to another using SCP tool
• Setup of print queues and definition printing
• Implemented Hardware Raid on servers
• Package installs and upgrading packages and kernels to solve kernel level vulnerabilities.

Confidential

Role:System Administrator

• Responsible for Installation of RHEL servers
• Create, delete and resize filesystems using LVM
• User and group creation and administration
• Installation of third party software and rpm packages
• Setting up password less login into Linux servers for users using ssh
• Experienced in troubleshooting critical hardware and software issues and other day to day user trouble tickets
• Troubleshoot and fix volume group and file system problems
• Changing file permissions for users and groups
• Installed and removed various packages using rpm and yum command
• Simple bash scripts to automate simple tasks like creating users, creating groups, copying files and directories from one servers to another using SCP tool
• Setup of print queues and definition printing
• Implemented Hardware Raid on servers
• Package installs and upgrading packages and kernels to solve kernel level vulnerabilities
• Configured and maintenance of SF V280R and NAS 5210 with 2TB storage. Installation of VeritasNetbackup 5.0 Enterprise server