PROFESSIONAL SUMMARY:

• About 6 years of experience as UNIX System Administrator in Red Hat Enterprise Linux, Fedora, Ubuntu, CentOS, and Oracle Linux Lion.
• Planning, Installation, and Configuration ofRed hat Linux 4x, 5x,6x, 7.0 along with installation and configuration of kickstart.
• Configured server hardware and performed kernel tuning based on the applications to be installed and the number of users.
• Experienced in deploying RHEL 7.0, 6x, 5x in an enterprise setting.
• Installed and configuration ZFS on test environment servers.
• Accomplished Disk Mirrors and RAID 0, 1 and 5 levels on several UNIX and Linux servers.
• Monitoring and troubleshooting Servers using various third party tools like Nagios,, iMon and Nmon.
• Efficiency in installing, configuring and implementing the RAID technologies using Veritas Volume manager.
• Highly experienced in Installing, Configuring, and Implementing Virtualization Environment Using VMware(Server and Desktop software), Oracle Virtual Box, and Microsoft Virtual PC.
• Provide and reviewed technical support for technical documentation of UNIX server builds and helped in disaster recovery operations.
• Have a good knowledge about basic shell scripting written inBash, Ruby and Pythonto automate tasks.
• Experienced in setting up a PXE boot environment with Centos Linux, and Red Hat Linux.
• Expertise in Veritas Volume manager (VxVM), creating new file systems, mounting file systems and unmounting file systems.
• Extensive experience in Installation, Configuration and Troubleshooting of various web server issues including Netscape Enterprise Server 4.0, Confidential http server, Apache Web Server 2.x/1.x, Tomcat 5.x/4.x/3.x.
• Configured Network Concepts DNS, NIS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Good knowledge on virtualization implementations such as VMWare and Xen on Redhat.
• Server Consolidation and Migration of Applications on Oracle and Java Applications.
• Expertise in implementation and maintenance of DHCP, NFS, NIS, DNS and Apache SMTP.
• Experience in using Veritas Net Backup.
• Operationally supported systems in AWS Networking and security administration and trouble shooting. Package and configuration management using Puppet.
• Experience with system analysis, troubleshooting and performance tuning of operating systems.
• Good experience in Red Hat Linux Performance Monitoring tools using vmstat and iostat.
• Involved in setting up Puppet Master/Client to automate installation and configuration across the environment.
• Expertisewith automation tools like puppet to push updates like sudo,ssh.sendmail and patches.
• Expert on migration of data from a physical data center environment to vCloud Air.

TECHNICAL SKILLS:

Web Severs: Apache 2.x/1.x,, Tomcat 5.x/4.x/3.x.

Operating Systems: Red Hat Linux 4.x/5.x/6.x/7.0, Centos 5.x/6.x/7.0,Oracle Linux Lion 5.5, Fedora

Web/Application Servers: Web Logic 7.0/8.1/9.x/10.x,, Tomcat, Web sphere 5.x/6.x, HTML, JavaScript, XML, Amazon Web server

Software: Veritas File System, Veritas Volume Manager, Solistice Disk Suite 4.x., Veritas Net Backup, Samba,.

Tape Hardware: Storage tek tape libraries L40, L80, L180, L700.Sl500, Sl850, DAT&DLT, STK 9940B, LTOs.

Hardware: Workstations 700 series

UNIX Scriping Languates: Bash Shell, Perl, Ruby, Python.

Networking: TCP/IP, NIS, NFS, DHCP, DNS,WAN, SMTP, Cisco Routers/Switches, TELNET, FTP/TFTP, SNMP,LDAP

PROFESSIONAL EXPERIENCE:

Confidential, Eagan, MN

Sr. System Administrator

Responsibilities:

• Responsible configure Volume Group using LVM, Logical and Physical Partitions and Importing New Physical Volumes.
• Extensively worked on installation, configuration and maintenance of Window 2012 server, Window 2012 R2 server,Red Hat Enterprise Linux 6.2 and Oracle Linux lion 5.5.
• Managing server deployment using third party tools like Service Manager7 and Service Manager 9.
• Deploying monitoring tool like Nagios using third party tool like iMon.
• Worked with VMware Vsphere Client V 5.5 to build, support and maintain virtual servers.
• Extensively worked on creation and maintainence of clusters of ESXi on vCenter Servers.
• Worked on creating Virtual machines for Windowsserver 2012, Red Hat Enterprise Linux 6.2and Oracle Linux Lion 5.5 on vSphereclient on the base of data provided on Build center.
• Run automated tool like WDSto deploy different windows server in different cluster of VMs.
• Run Nagios to monitor the deployed servers in these VMs.
• Worked on PXE booting, DHCP configuration and installing patches and other software on the VMs. Also worked on migration of datas from Windows to VMs.
• Automated routine tasks using scripting languages like Ruby and Python.
• Created new File Systems and Logical Volumes, performed file system management & troubleshooting; file system Installation & administration; performed basic file system & directory changes (creation/permissions), disk & file system cleanups in Oracla Linux 5.5.
• Operationally supported systems in AWS Networking and security administration and trouble shooting. Package and configuration management using Puppet and Chef.
• Configured and used automation tools like PUPPET to push updates like sudo,ssh.sendmail and patches.
• Designed, built, and deployed a multitude applications utilizing AWS stack focussing on high - availability, fault tolerance, and auto-scaling.
• Migration from a physical data center environment to AWS.

Environment: Oracle Linux lion 5.5, VMware Vsphere Client 5.5, Service Manager 7 & 9, Windows server 2008, 8 R2, 2012 &2012 R2, Puppet, Chef, AWS, DHCP, ESXi

Confidential, Austin, TX

LINUX/ UNIX Administrator

Responsibilities:

• Extensively worked on installation, configuration and maintenance of RHEL, CentOS, UBUNTU and Lion Linuxon development, test and production servers.
• Implemented day-to-day tasks in Redhat Linux 6.x, 5.x, 4.x including user access, setting up sudo rules upgrading kernel, firmware, rpms, HBA drivers, as well as adding SAN disks.
• Offer daily monitoring of hardware, OS, critical server processes, and other system software services such as: backup, file transfer, NTP, etc.
• Worked on PXE boot, DHCP configurations as well as OS, patches and other software installations with HPSA v. 7.88 automation tools.
• Worked with VMware Vsphere Client V 4.1.0 to build, support and maintain virtual servers.
• Implemented virtualization using VMware in Linux on HP-DL585 and Confidential z/Vm series.
• Configuration and Installation of DHCP, DNS (BIND,MS), web (Apache), mail (SMTP,IMAP), and file servers on Linux servers.
• Created users, manage quotas, and setup user permissions in Redhat Linux 5.x, 6.x.
• Collaborate on Monitoring and troubleshooting Servers using various third party tools like Nagios.
• Built and supported Weblogic 10.3.2 and 10.3.5,Webserver (Apache 2.2.17),JMS 2.4.3VMs and physicals in both testing and production environment.
• Created new File Systems and Logical Volumes, performed file system management & troubleshooting; file system Installation & administration; performed basic file system & directory changes (creation/permissions), disk & file system cleanups in Redhat 5.x, 6.x.
• Booted systems into different run levels for troubleshooting and system maintenance.
• Network troubleshooting using ndd, traceroute, netstat, ifconfig, and snoop etc.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Worked on decommission of legacy servers including removal of DNS entries VCS, Weblogic and other applications.
• Developed Korn, Python, and Bash shell scripts as well as crontab to automate routine activities.
• Used RCS (Revision Control system) to manage retrieval of frequently accessed files.
• Worked with Veritas Netbackup 6.5 for enterprise wide backup and recovery.
• Involved in setting up Puppet Master/Client to automate installation and configuration across the environment.

Environment: Redhat Linux AS, ES 5.x, 6.x, VMware Vsphere Client v 4.10, HP Server Automation v 7.88, Best Practical RT system v 3.8.2, DHCP, DNS, Weblogic 10.x and Apache 2.x, JBoss 6.0, JMS 2.4.3, HP DL380G8, Veritas Cluster, ILO, Veritas Netbackup 6.5

Confidential, Dallas, TX

Linux System Administrator

Responsibilities:

• Responsible for installation (using kickstart), configuration and administration of RedHat Enterprise Linux4.x/5.x and RHEL 6 at other data center over network.
• Administered and maintained RedHat 4.x/5.x/6.x, troubleshoot hardware, operating system, applications & network problems and performance issues.
• Responsible for Patching (both Operating System and Application Server)
• Installed and configured DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP), and file servers on Linux servers.
• Installed and Configured Samba (CIFS) to help printing and file sharing in the mixed Environment.
• Installed WebLogic 9i/10.3 and configured Domains, Admin and managed servers for Applications to be deployed.
• Automated routine activities the task using UNIX shell scripting languages like Perl, Python and Bash and Cron job.
• Database Migration from Windows 2000 to Linux.
• Responsible for installing, configuring and troubleshooting Web Server (Apache).
• Setup and maintained NFS, NIS, and TCP/IP network, configured the systems for TCP/IP Networking with the existing LAN, setting up SSH and SCP features.
• Implemented virtualization using VMware in Linux.
• Performed Kernel Tuning (for Oracle installation), memory upgrades and RedHat Linux Kickstart installations.
• Provided support for multi-path Fiber Channel storage systems, configured with multiple Fiber Channel (FC) Host Bus Adapters (HBA) on a Storage Area Network (SAN).
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system.
• Configured Firewall and security using SSL, IPtables, TCP Wrappers, SELinux Tripwire, and port scanners.
• Performed System Backup using tar, cpio for local systems and Veritas NetBackup for enterprise wide backup and recovery.
• Troubleshooting Network issues using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc.

Environment: RedHat Linux 4.0,5.0 AS ES, AIX 5.1,5.2,5.3, Veritas Netbackup, SAN Storage, 4.5.5, Confidential -z/VM, Oracle 9i/10g, Samba, Windows 2000/2003/2008 Server, Web Logic 9i/10.3, VMware ESX 2.x,, Tomcat, Apache Server 2.x

Confidential, Dallas, TX

Linux System Administrator

Responsibilities:

• Installed, Configured and Supported RHEL 4.6/5.X.
• Worked with installation and configuration of VMware ESX servers
• Deploying and maintaining of the Virtual Machines.
• Configuring Lights Out Management (LOM) for Remote Access.
• Successfully implemented Kickstart-PXE for the First time in the environment.
• Associated with DBAs for installation of Oracle database (RAC) on Linux servers & for tuning, backup and restore.
• Configured IP Bonding for Failover Load balancing.
• Scripts written in BASH and Perlfor the Automation of Post-Build Steps and Basic Hardening.
• Performed Datacenter infrastructure maintenance including racking, cabling and troubleshooting.
• Designed and implemented Virtual infrastructure 3 (10 ESX Servers, 50VM’s)
• Conducted troubleshooting, Patching, Upgrades and Back-ups when required
• Worked on Data Migration from EMC to Netapp.
• Storage Migration in VMware ESX server using VMotion.
• Prepared a standard RUN BOOK for each migration methodology used for migrating Linux/Unix servers.
• Checked and did Patch upgrade and Firmware Upgrade for each migration server when required.
• Installed and configured Multipath and removed Powerpath in all the servers.
• Provided post data migration support for all incidents related to end user access and directory access privileges until final cutover.

Environment: - Veritas Volume Manager 4.1, Veritas NetBackup 5.0, Confidential WebSphere 6.1, ZFS,Redhat Linux 4/5,AIX 5.3L,Windows,Veritas Volume Manager, Veritas Net backup, Ksh/Perl programming, DNS, NIS, NFS, Apache, Tomcat, Oracle 10g.

Confidential, Atlanta, GA

Linux System Administrator

Responsibilities:

• Performed RedHat Linux OS Installations on new hardware through native and TPM tools.
• Creating and administering users File System and user accounts on RedHat Linux servers.
• Systems monitoring and administration of RHEL 5.xservers for day-to-day problems in production environment and solved tickets on shift basis.
• Installation, Maintenance and Configuration of Computational Servers with corresponding and associated software on RedHat Linux Servers.
• Perform advanced system administration such as capacity planning using BMC patrol, reviewing the server logs and core dump analysis, following audit standards for SOX and PCI compliance and performance tuning.
• Planning, managing and Installation VMware ESX 3.5 /4.0 server, Installation and configuration of virtual center database and installation of VMware infrastructure virtual machine.
• Performing Snapshots, Cloning, Migration VM ware convertor, Virtual Infrastructure client.
• Performed LUN management, metaluns, RAID groups, storage groups.
• Worked on SAN management software and provided SAN administration for Clariion boxes.
• Installed patches, software up gradation, monitored log files, and performed backup for Linux servers.
• On-site support and issue resolution of administrators and developers for Linux, Iaas and configuration management tools
• Planning, installing and configuration of operating system on new RHEL Servers.
• Installation & Configuration of Logical Volume Manager - LVM and Veritas Volume Manager on RedHat Linux Hardware.
• Installed/Configured Websphere and provide on-site support and issue resolution of administrators and developers for Linux, websphere and Iaas and configuration management tools.
• Coordinated with SAN team for major datacenter migrations.
• Involved in creation and maintenance of raw disks and volumes for databases.
• Used the NIM OS image or mksysb image to get the maintenance done and bring the server back up.
• Adding/expanding new storage to existing/new systems using VERITAS Volume.
• Performed Host Based Migration using VERITAS Plex Level Mirroring on Linux.
• Applying new patches and packages for RedHat Linux.
• Installation and Configuration of Oracle10i and MySQL on RedHat Linux 5.x.
• Installation of system imager on system image server and client server.
• Design, configuration, implementation of Web Operations environment with Apache 1.2.x Web Servers. Installation and configuration of Weblogic application server.
• Installation of OracleRAC 10g on Linux servers
• Providing day-to-day user administration like adding or deleting users, password aging.
• Troubleshooting Sun Solaris problems, logging call with Sun, Involvement in Racking servers.
• Kernel upgrades for Linux andConfigured virtual IPs in Linux.
• Interacting with various teams such as Oracle database, Net-backup and SAN teams.
• Configured VMware and installed several Linux and Windows Operating Systems according to the client needs. Also involved in maintenance and Troubleshooting of VMware.
• Implementation and Management of Disk Quota on Linux.
• Installed VMware ESX server on Dell Servers and configured RedHat Linux 5.x, HP-UX, (v. 11), Windows 2000 virtual machines for various applications.
• Installation configuration and Administration of sendmail on Linux servers.

Environment: Redhat Linux 4.x,5.x,6.x, VMWARE, E3500, E4500, E6500, HP Sure Store Array, Sun Storage, HP DL series (320, 360, 560, 580, 760,,Storagetek Sun 6140, L700,,Connextrix manager, EMC VNX, EMC Unisphere, VERITAS Volume manager, System imager, Veritas Net backup, Veritas Cluster server, Apache, Tomcat, JVM

Confidential

Linux/ UNIX Administrator

Responsibilities:

• Monitoring and Resolving problems relating to Internet Servers, Services, Databases, Helpdesk queries and interacting with other Internet nodes to resolve issues regarding Internet services, etc.
• System & Network Administration of large group of systems & network Linux, Windows Servers, Modems, Routers and Switches.
• Setting up and sharing the network printer, planning, scheduling backups and antivirus installation on servers and nodes. Also includes updating and installing patches on servers
• Implementing, Managing and Troubleshooting hardware devices and drivers, installing service pack and updating drivers.
• Monitoring Sendmail, Postfix, NFS, NIS, and DNS Servers.
• Support company mail infrastructure by maintaining multiple mail servers and assisting users with mail related questions.
• Maintaining the backup of all the logs of users and mail logs for future correspondence.
• Installation and preventive maintenance regarding system upgrade and implement diagnostic packages, Networking hardware and installation.
• Configuring and Administration of users, groups, Creation/Deletion, Monitoring Mail Queues, File systems, network printer & device drivers.
• Administration, Monitoring, Disk space Management, Ensuring Data security and Access control on Servers
• Managing user Rights, Maintaining data and access security Assigning mail Quotas, Writing Scripts, LVM, RAID.
• Occasionally Support for Windows
• Involved in Formatting raw disks and partitioned them using the format utility, installed Red Hat operating system, created file system, devices and special files using mkfs.ext4 and resize2fs.
• Managed Systems and Network related issues like Installation, Configuration and Troubleshooting on Red HAT platform.

Environment: Red Hat Linux AS3.0/ AS4.0/ AS 5.0, VERITAS Clusters, VERITAS Volume Manager, VMware, Apache 2.0, NFS, Software RAID.