SUMMARY

• IT Professional wif 7+ years of Extensive experience in Linux/Unix system Administration, System Builds, Server Builds, Installations, Upgrades, Patches, Migration, Troubleshooting, Security, Backup, Data Recovery, Performance Monitoring, and Fine - tuning on RHEL 4.x/5.x, SUSE, & Solaris systems and VMware vSphere 3.5/4.0
• Solid experience in deploying, configuring, monitoring, fault isolation and troubleshooting of 3 tiered applications in load balanced environment.
• Profound experience in Logical Volume Management (LVM) and Logical Partitioning.
• Worked wif Different storage Vendors like EMC, Netapp and Hitachi and configured DM multipath and EMC Power Path.
• Experience in using various transport, application and internet protocol layers like DHCP, DNS FTP, HTTP, IMAP, POP3, RPC, SMTP, SSH, Telnet, TCP/IP, IP(IPv4, IPv6).
• Proficient in configuring JumpStart and KickStart servers to initiate installation of all flavors of Linux on several machines at once.
• Worked on Kernel Patching wif different distributions. Checking Kernel Parameters for better Performance Tuning.
• Experienced in Linux / UNIX System Administration of REDHAT Linux 3, 4.0, 5.0 (ES, AS & WS) and Sun Solaris 2.6 & 8, 9 &10.
• Solid understanding of RPM & YUM, building, maintaining, and installing packages.
• Design, setup and Supported the three node Oracle 10g Real Application Cluster (RAC).
• Creating and maintaining Users, Groups, Profiles, Security, Permissions, Disk Space and process monitoring.
• Responsible for the Data Center in a 24*7 Environment.
• Experience wif switches and routers from various vendors like Cisco, Dell, and HP.
• Good noledge about EMC Storage Area Network (SAN), Tivoli Storage Manager.
• Root cause analysis on recurring problems & providing a permanent fix to those problems.
• Worked on Group/User administration, Startup & Shutdown Scripts, Crontab, File System Maintenance, Backup Scripts and Automation.
• Experience in using Shell Scripts for applications, Backup & Scheduling.
• Install and manage software and hardware RAID to improve fault tolerance and performance.
• Used standard RHEL monitoring like top, netstat, iostat, vmstat to check the performance related issues.
• An Excellent communicator wif good information analysis skills and ability to work independently as well as collaboratively in team environment.

TECHNICAL SKILLS

Operating Systems: Red hat Enterprise Linux 3, 4.x, 5.x(ES/AS/WS); Fedora Core 2, 3, 4; IBM AIX 6.1, 5.3; Solaris 2.6,8,9&10; Windows 95/98/2000/XP; and Maces X

Linux Experience: System Administration Tools, Apache, Squid Proxy Server, Tomcat, Send mail/Postfix, IP Chain/IP Tables.

Virtual Environment: VMware ESX 3.5, VMware Infrastructure Client 4.0, Snapshots and Cloning, Physical to Virtual(P2V)

Application Software: HP ProLiant and HP Blades, Dell Power edge and Blades, IBM x series.

Application Servers: Web Logic 10.3, Web Sphere 5.x/6.x

Data Storage: Storage Area Network (SAN), Network Attached Storage (NAS), Direct Attached Storage (DAS), RAID

Networking Skills: TCP/IP, DHCP, DNS, NFS, NIS, NAS, LDAP, SMTP, SAMBA, BIND, Load Balancing, High-Availability

Database: Oracle 9i, 10g,11i MS Access, MYSQL 3.X

PROFESSIONAL EXPERIENCE

Confidential, Memphis, TN

System Administrator

Responsibilities:

• Planning and implementation of new systems and upgrades to existing systems.
• Installation of Red Hat Enterprise Linux using Kick-start PXE-Boot or Red Hat Satellite Server.
• Build file systems for Test/Dev, QA & Production Environments appropriate to the build specs.
• Build, install and integrate Red Hat AS@5.4 OS on VMware vSphere and accommodatethe hardware resources to the Virtual Servers.
• Configure SAN on multipath and prepare the servers according to the Oracle Standards.
• Create & modify the User Aging and controlling the access permissions of the Users such as“allows SCP, deny SSH” access methods.
• Hands on Load Balancer.
• Web logic server Administration including Domain creation, Administration console, Application Deployments, Database connections and Managing Security.
• Web logic server Administration including Domain creation, Administration console, Database connections and Managing security.
• Design, setup and Supported the three nodeOracle 10g R2Real Application Cluster (RAC).
• Hands on Experience in Linux administration Support, Performance tuning & monitoring, problem analysis & resolution.
• Manage and deploy appropriate packages for the Red Hat Clients via Channel setup configuredin the Red Hat Satellite Server.
• Troubleshoot the potential issues faced by the Oracle and other Middle-Ware groups and providesudo access to Special Users in the Test & QA domains & provide support while installing the application software.
• Ability to configure all the services including NFS, FTP, Web servers, samba server, RAID (software &hardware Configuration).
• Monitor the Server functionality, generate an accurate report of the statistics of all the built-servers and document the necessary patches, upgrades or packages installed.
• Involved in Shell, Perl Scripting for Automated System Management tasks like User accountcreation, file system size monitoring, monitor system resources.
• Created Disk groups, Volumes, Volume Groups, and RAIDs on local disks and SAN disksprovisioned to the Servers.
• Involved in automating Data Backup and Restore functions using Tivoli Storage Manager.
• Monitored the performance of the system using ps, prstat, vmstat, mpstat, netstat iostat and rpcinfo to check the CPU utilization, bottlenecks of me/O devices, Memory usage andNetwork traffic.

Environment: Dell Poweredge R900, R710, RHEL 4/5,VMware 3.5, VSphere 4.0, VMware converter, Oracle 10G/RAC, WebLogic 10.3, SAN/NAS, Cisco N/W tools.

Confidential, Cambridge, MA

Linux System Administrator

Responsibilities:

• Created mount points for Server Directories, and mounted directories on the Servers As per DBA’s and Middleware team requests.
• Administration of NFS, NIS, DNS, Samba and Send Mail Servers.
• Administered VI infrastructure wif Virtual Center management server and provisioned VM guests.
• Responsible for the Data center in a 24*7 Environment.
• Setup and maintained NFS, NIS, HTTP, SSL, CGI, JSP, LDAP, NIS and TCP/IP network,configured the systems for TCP/IP Networking.
• Worked wif transformational technologies such as Virtualization and Cloud Computing.
• Provided support for switches and routers.
• Involved in Security Administration, User Administration, Disk Management, Daily Backupand Restore operations, networking service, performance, and resource monitoring.
• Configured and resolved - LAN and TCP/IP issues and Generated reports to show the trends ofResource Utilization, User/CPU/network load.
• Wrote and modified shell scripts (Perl, C, ksh) & cron to perform automated administrationtask.
• Configured Kickstart server to install Red Hat Linux on multiple machines.
• Provided security wif the using SSH, SSL, IPchains, IPtables, TCPWrappers.
• Performed routine check on the systems and using admin tools like admintool, smit, linuxconf, vmsat, iostat, TOP, traceroute, ping and sar.
• Done the installation and Configuration of Apache Web server.
• Involved actively in Red Hat Satellite Server implementation, and performed Administrative taskssuch as adding users, groups, systems, manage packages using Red Hat Up2date agent & traceback operations.
• Performance analysis of the environment, documenting solutions in complicated issues.

Environment: Red Hat Linux 3/4.x, IBM x series and HP Proliant,VMware, Perl Scripting, NIS, NFS, LDAP server, Weblogic,Apache Tomcat, EMC Storage SAN

Confidential, Cincinnati, OH

System Administrator

Responsibilities:

• Installation, Configuration and Troubleshooting of Linux and Windows Servers.
• Installed and configured Linux based Mail Server using Postfix, Send Mail and Fetch Mail
• Configured NFS Servers and Clients.
• Implemented DHCP servers.
• Performed integration between different Operating Systems such as Windows using Samba Server and Roaming Profile.
• Design, setup and Supported the three nodeOracle 10g R2Real Application Cluster (RAC).
• Install, Update and erase the required packages to provide services using RPM and UP2DATE.
• Performance optimization of Red Hat Enterprise Linux servers.
• Setup Linux workstations wif hardware and software RAIDS and implement LVM. Configure and maintain clustered RAID subsystems.
• Worked on Routers and firewalls.
• Installed and configured Suse Linux and configured DNS for DNS services effectively.

Environment: RHEL 3.x/4.x, Windows 2008, Veritas Volume Manager (VVM), LDAP, Web Sphere MQ Series 6.0/5.3, EMC Storage SAN, VMware Servers,Jboss 5.0

Confidential, NY

Linux System Administrator

Responsibilities:

• Installation and configuration of RHEL 2.1/3/4 AS/ES using Kickstart PXE boot.
• Trouble shooting various Networking issues related to FTP, NFS, NIS, HTTP, MYSQL, RSYNC and DNS.
• Linux on Dell Power Edge, IBM Blade Server, OS Installation, Patching and Maintenance
• Dell Open Manage and DRAC configuration experience.
• RAID and LVM configuration.
• Applications running on various Unix platforms such as Sun Solaris 8, Redhat 2.1,3
• Firewall, FTP, SSH Server Configuration.
• Troubleshoots and resolves problems associated wif operating systems and all connectivity between those systems.
• Develop and implement server-hardening security protocols and apply them to new and existing server infrastructure.
• Writing Shell Scripts for system/application, Application monitoring, Data feeds files transfers & log file analysis.
• Collaborates on projects wif other information systems and technology departments.

Environment: RHEL 2.1, Red hat Linux 8/9, IBM x series and HP ProLiant, Windows

Confidential

Jr. System Administrator

Responsibilities:

• Installation, configuration and administration of 1000+ Red Hat Linux servers and support forServers.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation.
• Administration of user accounts adding and deleting accounts on Unix systems and assigning rights to various user groups
• Configured and maintained SAMBA for sharing files between Windows and Linux Platforms.
• Installed, configured and maintained DHCP server.
• Provided intensive support in the maintenance of SAMBA and NFS having a common volume.
• Installed, configured and maintained HTTPD server for Intranet specifications.
• Installation, Configuration and Troubleshooting of Linux and Windows Servers.
• Maintained system configuration files to handle high volume data.
• Setup backup methods like tar, cpio, dump (ufsdump).

Environment: Red Hat Linux 7.3, Red Hat 9, Fedora Core 1/2, Samba, NFS, HTTPD, SMTP, SENDMAIL & IMAP Servers