Summary:

• Over 5 years of strong experience as a LINUX/UNIX System Administrator and Production Support of various applications on SUN Solaris, Red Hat Linux and Windows environment.
• Experience on Solaris 10/9/8/7 and RHEL 4/5/6 implementation Administration, Installation & Maintenance.
• Upgrade and Maintain Firmware on IBM p5/p6 Servers, HMC, Sun Sparc Servers.
• Web Application Server Tomcat, Apache, IBM Web Sphere, Web logic 8.0, 8.1.
• Integration of various network related services like NFS, NIS, DNS, FPT and Samba Server.
• Installation and configuration of Apache/Web logic on Solaris, Linux and Windows.
• Enterprise Server administration of Sun Solaris and Linux Installations including Sun Fire series.
• Expertise in the setup and administration of VERITAS Volume Manager and Clusters.
• Configured Kickstart servers for complete hands-free installation of workstations, with custom profiles, begin/finish scripts and custom package suites/clusters.
• Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP & SNMP.
• Hands on experience with ticketing tools such as Remedy, BMC service desk express and Quick base.
• Administration of networking devices such as Routers and switches.
• Extensive implementation and troubleshooting experience under Client Server Systems.
• Experience in writing basic Shell scripts using ksh, bash, perl, for process automation of databases, applications, backup and scheduling.
• Strong technical background in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning.
• Installation, configuration and maintenance of Sun and HP servers.
• Management of User accounts, System security, change management and performance tuning.
• Installation of SSL certificates Linux servers.
• Monitoring and administering Sun-Solaris servers and Red hat Linux servers.
• Installation of Patches, Hardware, software's and Firmware upgrades.
• Ability to handle multiple tasks and work independently as well as a team member.
• Provided on-call support and worked with Vendors on system issues and bugs for its resolution.
• Proficient in System administration, System planning, co-ordination, commissioning, setting up security hierarchy and capacity planning.
• Worked on flexible hours for production, backup and on-call support for 24/7 environments.

Education:
Bachelor of Electronics and Communication engineering

Technical Skills:

Operating Systems

Linux (RedHat 5/6), Sun Solaris (10/9/8), IBM AIX 5.x, Windows 2000/2003 Sever, VMWARE ESX/ESXi

Hardware

Dell Poweredge Series, HP DL Series servers, Sun Fire Servers - E25k, E15k, 12k, E280R, E480R, V240,420R, V440, V480, V490, V880,V890 and 4800
Data Centre Servers - E250, E450, E3000 and E3500
Tape Libraries - Sun StorEdge L20/L40/L60, L180 and Storagetek's 9840
A/B/C Fibrechannel
Arrays - Sun StorEdge 3130, A1000/D1000, EMC DMX 800 and 1000

Languages

Shell scripting, PERL, C, C++

Networking

TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN

Sun Cluster 3.2, VERITAS Netbackup 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager, sendmail

Lotus Domino 5 / 6, Apache 2.0, Weblogic 8.1/10, WebSphere, JBoss, IPlanet, IIS, HIS.

Professional Experience:

Confidential, Chicago - IL Jan'12 - Present
UNIX/LINUX System Administrator
Responsibilities:

• Responsible for installation, configuration, and administration of Red Hat Linux, Solaris systems.
• Designed, supported, and maintained Oracle Real Application Clusters supporting business critical applications on HP Proliant BL465/BL685 & Integrity Itanium2 platforms on RHEL 4 & 5.
• Expanded the environment from 128 to over 280 systems over the course of 12 months.
• 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 between SUN systems and other Red Hat/UNIX hosts.
• Maintained network and data security, maintained security compliance policies on the OS for SOX and internal audits.
• Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running Solaris, Linux, Windows.
• Integrated the Linux environment with Active Directory providing a Single Sign On (SSO) solution.
• Using rsyslog & mysql, deployed a custom syslog reporting solution for system alerts and notifications.
• Deployed Redhat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Experience with Jumpstart & Kickstart Installations on Solaris & Linux
• Installed, maintained and finetuned the Apache-Tomcat serverand Websphere Application Server in Linux Platform
• Created Bash/Korn shell scripts to monitor system resources and system maintenance.
• Wrote Perl and Python scripts to generate statistics and monitor processes.
• Deployed Active/Active MySQL clusters using Redhat Cluster Suite for supporting internal applications built on the LAMP stack.
• Automated system management tasks like user account creation, file system size monitoring, monitor system resources and system maintenance using Shell, and Perl scripts.
• Installed, configured & upgraded Websphere and provided extensive support in code deploy, change management and application level troubleshooting for the Dev, Test, Pre-Prod & Production environment. Deployed applications (EAR/WAR) files on multiple Servers/Clusters and maintained Load balancing.
• Worked with DBAs on installation of Oracle database, RDBMS database, restoration and log generation. Perform security patching of Linux servers

Environment: Red Hat Enterprise Linux 4.x,5.x, Sun Solaris 8,9,10, VERITAS Cluster Server, Veritas Volume Manager, Oracle 11G, HP UX, IBM AIX, HP Proliant DL 385, 585 Weblogic, Oracle RAC/ASM, MS Windows 2003 server.

Confidential, Bethpage, NY Jan'11 - Nov'11
UNIX/LINUX System Administrator
Responsibilities:

• Building Physical as well as Virtual (VMware) Servers.
• Mass Build of Linux/Solaris OS servers using kickstart /jumpstart automation application.
• Building Linux servers (web-logic application, apache, DB servers etc) in large quantity as per EDC and Non EDC production requirement as well as App/Dev requirement.
• Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
• Verification of the built servers.
• Worked extensively with Network File System (NFS) for storage.
• Patching of RHEL5.3 servers during outage for PCI compliance purpose as well as VCS patching for Solaris servers during weekend outage.
• Kernel Upgrading from EL5.3 to 5.4 during outage in production boxes.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Software package and patch administration, involving adding and removing software packages and updating patches
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Sun Solaris 10/9/8, Linux 5/4/3, Oracle 10g, SUN Servers, SUN Fires, Linux, Jump Start, Shell Script, Autosys, Veritas Volume Manager (VVM), LDAP, EMC Storage SAN, Veritas Cluster Server (VCS), VMware servers, jboss,Websphere.

Confidential, Irvine, CA March'10 - Dec '10
UNIX/LINUX System Administrator
Responsibilities:

• Patching of RHEL5 and Solaris 8, 9, 10 servers for EMC Powerpath Upgrade for VMAX migration.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Documented the standard procedure for installation and deployment of VMAX Migration and logical volume manager.
• Installation, configuration, support and security implementation on following services:DHCP, SSH, SCP.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Maintained and monitored all of company\'s servers' operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• User administration on Sun Solaris and RHEL systems, HP-UX machines, management & archiving.
• Installations of HP Open view, monitoring tool, in more than 300 servers.
• Attended calls related to customer queries and complaints, offered solutions to them.
• Worked with monitoring tools such as Nagios and HP Openview.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 4.0.
• Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues.
• Expanded file system using Solaris Volume Manager (SVM) in the fly in Solaris boxes.
• Managed and upgraded UNIX's server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux and Solaris servers.
• Supported the backup environments running VERITAS Net Backup 6.5.
• Responsible for setting cron jobs on the servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Participated in on-call rotation to provide 24X7 technical supports.
• Configuration and troubleshooting - LAN and TCP/IP issues.

Environment: Red Hat Enterprise Linux 4.x, 5.x, Sun Solaris 8, 9, 10, VERITAS Volume Manager, Oracle 11G, Samba, Oracle RAC/ASM,EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250 ,X6270.

Confidential, Atlanta, GA Oct'09 - Jan'10
UNIX/LINUX System Administrator
Responsibilities:

• Perform hardware configuration, operating system loads, and assist with troubleshooting installation issues.
• Installations of all the required patches, drivers, third-party software.
• Installed and configured VERITAS Volume Manager and VERITAS File System as needed.
• Supported, Installed and Upgraded VERITAS NetBackup software on multiple Unix servers ( Solaris)
• Installalled of Sun E250, E450, Sun E3000, SunFire v440/v480/v490 with Solaris 8/9. Upgraded/Migrated Solaris 7 to Solaris 8 on Sun servers and workstations.
• Expertise in managing shared NFS files system, mounting and un-mounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Experience in installing local and remote YUM server on Redhat.
• Co-ordinate with web administrator's team in installation of Web Sphere Application Server.
• Worked with DBAs on installation of Oracle database, EBS consisting Oracle Financials
• Implemented System policies and hardware profiles, hard disk configuration for fault tolerance, disk mirroring and back up the data using BACKUP devices.
• User accounts management, developing kornshell scripts for various system performances monitoring purposes and troubleshooting.
• Administered Linux servers for several functions including managing Apace/Tomcat server, mail server, MySQL database and firewalls in both development and production
• Monitored Sun Solaris Servers running in a 24x7data centre supporting approximately 400 servers.

Environment: VERITAS NetBackup, Sun E250, E450, Sun E3000, SunFire v440/v480/v490, Solaris 8/9, SDS 4.1, 4.2(Solstice Disksuite), VERITAS volume manager 3.5, websphere.

Confidential, Vadodara, India May'08 - Sept'09
LINUX /UNIX System Administrator
Responsibilities:

• Responsible for supporting Linux servers for production, development and testing.
• Installing, Configuring and Maintaining the DHCP, DNS, NFS, NIS, send mail server.
• User Account Management, Group Account Management, configuring dumb terminals, adding modems, formatting and partitioning disks, manipulating swap, local and remote printer management, taking and restoring backup, scheduling jobs.
• Performance tuning and preventive maintenance. Performed daily backup.
• Performed addition of Swap space at run time.Performed installation and configuration of LDAP.
• Resolving TCP/IP network access problems for the clients.
• Implementing Remote System Monitoring with Sun Microsystems.
• Performed administrative tasks such as system startup/shutdown, backups, Printing, Documentation, User Management, Security, Network management, configuration of dumb terminals.
• Troubleshooting backup and restore problems and performed day-to-day trouble shooting for the end users on Solaris and Linux based servers.
• Develop, Maintain, update various scripts for services (start, stop, restart, recycle, cron jobs) UNIX based shell, Perl.
• Configured and maintained NIS, NFS servers on Linux.
• Setting up Oracle 8 server in Linux/Unix environment.

Environment: Linux ( Red Hat Enterprise, CentOS), Windows 2000/NT, HP, IBM, Solaris, Oracle 8, SSH Gate, Cisco routers/switches, Dell 6400, 1250, Sun E450, E250.

Confidential, Vadodara, India June'07 - March'08
Linux/UNIX System Administrator
Responsibilities:

• Worked on creating and removing files and directories in Linux servers.
• Network designing, implementing & amp; managing LAN Networks and WAN Network
• Installing and Configuring, Manageable switches, Firewall.
• Active involvement in VMware Implementation project for virtualization of servers on three IBM ESX servers with DS 400 storage.
• Management of virtual servers on VMware.
• Managing disk storage with Veritas Volume Manager with Veritas File System (VxFS
• Granting root permission to users for performing certain activities.
• Worked on DNS, NFS, NIS administration.
• Cluster implementation for file server failover on two nodes with DS400 storage