SUMMARY

• Worked extensively in planning, designing, installing and configuration and implementing on Unix servers - Sun Solaris, Red Hat Enterprise Linux (RHEL), AIX, Windows.
• Experience working on system automation using scripting
• Datacenter migration and Tech refreshes
• Experience with various UNIX systems including building of servers, migration, production support, data center support, packaging, automation, troubleshooting and security hardening of servers.
• Experience with managing and integrating with virtualization solutions (VMware, LDOMs, Zones)
• Experienced in configuring and administering NFS, NIS and FTP with very good understanding of networking protocols such as TCP/IP, DNS.
• Experienced with SAN, NAS and storage administration, with EMC Clarion & DMX storage. Configured Sun Multi-Packs, Storage Arrays, T3's and SAN backup for disaster recovery.
• Expert inLinuxPerformance monitoring, kernel tuning, Load balancing, health checks and maintaining compliance with specifications.
• 24X7 on-call production support and troubleshooting problems related to RHEL and SUSELinux.
• Experience in Troubleshooting issues related to upgrades of VCenter and ESXi and vSphere update manager.

TECHNICAL SKILLS

• Red Hat Linux 5 6 7
• Shell Scripting
• Python
• PowerShell & Power CLI
• VMware ESX 5 5 5 6.5
• VMware Vcenter
• TCP/IP/NFS
• DNS/FTP/SNMP
• RAID
• Veritas
• DNCP
• Clusters
• Patching
• Data Center Migration
• Load Testing.

PROFESSIONAL EXPERIENCE

Linux/Unix Administrator

Confidential

Responsibilities:

• Installation, configuration and Operating System upgrade on, Unix - RedHat Linux 5/6, and Sun Solaris 10/11
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• SWAP box configuration, Implementation of disaster backup and recovery.
• Performance Management & Tuning of RHEL.
• Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Worked with completely fair schedulers to maximize CPU utilization by thread affinity.
• Implemented NIS and NFS for administrative and project requirements.
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Responsible for multicasting of various components as a system administrator.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases
• Tuning the kernel parameters based on the application/database requirement.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• Experience in Bash, PL/SQL and Perl scripts for backup and automation.
• Knowledge in Adobe, Hyperion, development servers.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Modifying user’s password policies, group policy, UID and GID assignment policies.
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat, and cpuinfo to check the CPU utilization, bottlenecks of I/O devices,, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to the remote system using sudo, putty, and telnet. Transfer files across the systems on the network used ftp, scp, and rsync commands.
• Experience managing various file systems using LVM and SVM and also configured filesystems through network using NFS, NAS, SAN methodologies and installed RAID devices.
• Linux technical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data. Worked in solving tickets issued on day to day activities and problems related to development and test servers.

Linux/Unix Administrator

Confidential, Bloomington, IL

Responsibilities:

• Installation of RHEL 5.0/6.0, Ubuntu and Solaris 10 using kick start/jumpstart and custom building the servers.
• Linux / UNIX administration and Enterprise Server Integration.
• Migration of servers for DC consolidation and tech-refreshes.
• Providing 24/7 support for on-call on Red Hat Linux, Ubuntu, Solaris and AIX environments.
• Worked on installation and configuration of Oracle RAC database.
• Perform regular DBA activities including space management and performance monitoring.
• Jumpstart (JET) and kick start for server builds
• Monitored server health through SCOM.
• Build and configure a virtual data center in theAmazon Web Servicescloud to support
• Creating and managing of file system with SVM, VERITAS Volume Manager, and VERITAS File systems, LVM, ZFS in the production, test and Development environments.
• Worked on installing and configuring Sun Solaris using jumpstart, Ubuntu, Red Hat Enterprise Linux using Kick start.
• Tuning the kernel parameters based on the Oracle RAC database requirement.
• Implemented automations tool puppet and worked with Chef Management tool and AWS and DevOps.
• Key member in server migration, data-center consolidation and data-center migration project
• Deployed and managed SUSE Linux based servers and workstations, for production and lab usage.
• Maintained the Unix-based server infrastructure Kernel/firm ware, OS patches and maintenance level releases.
• Built and supported Solaris Zones and Containers on Solaris 10, 11 platforms
• Created LDOMs on Solaris 10, 11
• Migrated, patched, and did resource utilization of Solaris virtual servers (ldoms, zones, containers)
• Installation and configuration VERITAS NetBackup 6.5 on Sun/Linux Severs and performing backup, upgraded VERITAS NetBackup from 3.x 5o 5.x
• Created VMware Virtual machines using vSphere and installed Red Hat Linux 5x/6 on the VMs and standalone Dell servers.
• Installed/configured EMC Storage with 0, 1 and 5, 10 RAID configurations
• Writing Splunk Queries
• Creating Applications on Splunk to analyze the Big Data
• User management and enforcing password policies
• Involved in DevOps processes for build and deploy systems
• Ring in changes in production following ITIL standards under Change control mechanism.
• Configuration and troubleshooting of VERITAS File systems having multiple disk groups for VERITAS Volumes and performed Disk group administration on SAN LUNs using VERITAS Volume Manager.
• Performed performance troubleshooting, kernel tuning and daily administrative work on Solaris and RHEL Oses.
• Server hardening per PCI, SAS70 Security and SOX / DSS standards
• Key member in server migration, data-center consolidation and data-center migration project.
• Multipathing of disks using PowerPath
• Patching of RHEL OS (yum repository on Satellite server), Ops Center and bundled patching on Solaris OS.
• Worked in ITIL compliant Change Controlled environment (BMC Remedy)
• Proficient working experience with vendors like HP, Oracle, Dell, Veritas and RedHat for troubleshooting issues.
• Creating and managing Virtual Machines and Kick start Templates.
• Worked on Linux KVM for virtual environment built up.
• Installing packages using yum
• Expertise in managing Virtual Linux servers running on VMWare ESX 4/5.
• Actively involved in Change board meetings and responsible for creating changes and implementing them mainly in Production environment.
• Experienced in recovering OS from VM snapshots and working on Maintenance mode through VM console.
• Perform Backup and restore. Restored files for end-users when necessary.
• Work on implementation of security controls and monitors compliance with security policies and procedures.
• Experienced in tasks like managing User Accounts and Groups, managing Disks and File Systems
• Experienced in creation and maintenance of user accounts and active directory.
• Perform tasks related to technical support & management.
• Worked on Analyze system performance, client to server traffic and server to server traffic.
• Experience with various ticketing tools and currently using Service Now for everyday support.

Linux Administrator

Confidential

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of Red hat Linux 5&6, windows servers.
• Performed automated installations of Operating System using kick start for Red hat Linux.
• Installing and configuring services such as Apache, SMTP, HTTPD, NTP, DHCP and supporting them on Linux production servers.
• Performing RPM and YUM package installations, patch and another server management
• Participate in performance walkthroughs and reviews
• Experience in configuring, installing, OS and working with HP Rack/Blade Server
• Extensively worked on LVM & Linux file system like EXT3, EXT4.
• Maintained all the Red hat servers entitled with the latest subscriptions
• Perform error analysis and recovery, documentation and procedures required for reference.
• Log all scheduled/unscheduled system activities and problems
• Monitored the systems CPU, memory, IDE/SCSI disks, disk controllers, RAID, and network parameters using the tools NAGIOS monitoring system.
• Worked on high availability servers - load balancing and clustering
• Worked with Network Attached Storage devices and RAID technology

Linux Administrator

Confidential

Responsibilities:

• Involved in development, user acceptance, and performance testing, production and disaster recovery server.
• Administering and managing Redhat Linux servers
• Worked with other IT teams including Database and Network Teams, customers (users), and other managers in helping build and implement systems and standards.
• System performance tuning, User maintenance and security.
• Interaction with vendors for Hardware and software supports.
• Regular disk management like adding/replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Maintaining updated documentation of all the Servers and the installed applications and patches.
• Performed day-to- day administration tasks like User Management, Space Monitoring, Performance
• Monitoring and Tuning, alert log monitoring and backup monitoring.
• Experienced in dealing with LVM.
• Deploy, maintain configure, troubleshooting logs and providing application support for HTTP, FTP, Mail server on Red Hat Linux boxes.
• Responsible for User and Group account management including their permissions.
• Responsible on handling Nagios tools for monitoring.