SUMMARY:

• Over 8+ years of extensive experience in Unix/Linux systems as System Engineer and System Administrator on versions of RHEL 4/5/6, SUSE, CentOS and AIX 5.2/5.3/6.1
• VMware Infrastructure 5.x Installation & Configuration.
• Building VMware templates and installing RHEL 5/6 on them per application requirements.
• Indepth knowledge in OracleERPDB,PLSQL/Scripting/APIdevelopment
• Setup and configure LDAP servers for home directory location and authentication.
• Experience in networking (TCP/IP, Ethernet), NIS, DNS, NFS, DHCP, SMTP and RAID.
• Resolving all software application problems in the production, test, and development environments.
• Experienced with installation of packages, patches, maintenance & RPM updates on Red Hat Linux.
• Extensively worked on Logical Volume Management (LVM) and disk space allocation per user (Quotas).
• Strong experience in Weblogic, WebSphere, Java, J2EE Applications, and SQL
• Performance Monitoring and Capacity planning on UNIX and Linux Servers.
• Configuration, Administration and Maintenance of NFS, DNS, NIS & NIS+ on Linux Servers.
• Implementing & troubleshooting NFS in Prod/ QA/ Dev environment.
• Experience in System Administration Driver Configuration.
• Experience in Virtualization Technology such as VMware, Virtual box and ESxi
• Experience in working with Storage Area Network (SAN), EMC Clariion CX, EMC Symmetrix DMX, EMC MirrorView, HP Storage, and Hitachi data storage
• Experience in installation and configuration of Hadoop cluster.
• Proficient in Storage, Disk Management, Logical Volume Management (LVM) on P - series systems Precisely P770, P750, P720, P690, P650, P595, P570 and P520.
• Configured services like DNS, NIS, NFS, LDAP, Send Mail, FTP, Remote access on Red Hat Linux.
• Knowledge of Switches, Routers and Firewalls in Networking Area.
• Knowledge of latest tools such as Puppet and Chef
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, and managing services.
• Strong analytical skills in both the technical and business arenas.
• Quick learner, excellent problem solving skills, highly motivated and adaptable.
• Strong Analytic ability and Capable of working in a large project Team.
• Experience working with various tools such as top, nmon, vmstat, iostat, netstat, tcpdump etc.
• Provided production support in an on-call rotation in a 24x7 environment.

TECHNICAL SUMMARY:

Operating Systems: RHEL 4/5/6, SUSE, CentOS IBM AIX 5.2/5.3/6.1/7.1Databases: MYSQL 5.0, Oracle 8i/9i, 10g, DB2, SQL Server 2000, 2005.

Web Technologies: PHP, HTML, DHTML, JavaScript, XML, CSS.

Web Server: IBM HTTP Server1.3/1.2, IPlanet Web Server 5.1/6.0Scripting: Bash, Shell Scripting, Perl, PowerShell and PLSQL.

Networks: NIS, NIS+, DNS, DHCP, Telnet, FTP, Rlogin

Networking Hardware: CISCO Switches, Routers and others.

Network Protocols: TCP/IP, NetBEUI, PPP, SNMP, SMTP, DNS, NFSv2, NFSv3

Tools: Smit, Linuxconf, Vmstat, Esxi IOstat, top, traceroute, SAR, topas

PROFESSIONAL EXPERIENCE:

Server Delivery System Administrato

Confidential

Responsibilities:

• Built new Linux servers
• Installed Red Hat, HPUX OS and set up network and firewall, software applications and patches
• Decommissioned servers using Service Center to track decommission, shut down server, wiped all software off hard drive, removed from monitoring tools
• Added servers to SAN and built and tested the server capability
• Resolved any issues with servers that have issues with network and software tools
• Updated information in ESL & ADMS databases to keep track of servers and monitoring tools
• Successfully tested server through PCM tool for any failing jobs
• Worked on multiple JAVA projects under the supervision of a certified J2EE developer using the Eclipse Luna IDE.
• Applied object oriented concepts to develop application using concepts such as arrays, loops, conditional logic, Class methods and constructors, Interfaces, Packages, access modifiers, Inheritance, Encapsulation, exception handling, casting, reading and writing to files and more.
• Wrote applications that successfully connected to MySQL database and performed SQL queries to retrieve data using JAVA and JDBC.
• Developed a web application using J2EE platform using concepts such as MVC pattern, Jsp, Servlets, HTML, Apache Tomcat Web Server 7.0, web.xml, and deploying the web application on a hosting server.

Confidential, Mesa, AZ

Linux Admin

Responsibilities:

• Administration of RHEL 5/6 which includes installation, configuration, testing on both physical and virtual machines.
• Monitored Linux servers for CPU Utilization, Memory Utilization, and Disk Utilization for performance issues.
• Experience with PL/SQL design and development.
• Extensive experience querying and optimizing relational databases (Oracle, SQL Server).
• Hands on experience with configuration tools, such as Jenkins, Git, SVN and Ant.
• Capturing the image of production server, Configuring RAID and build the new server using the image on system imager server with PXE boot.
• Updating YUM Repository and Redhat Package Manager (RPM).
• Performing software installations using yum and RPM.
• Setting up cron schedules for backups and monitoring processes.
• Installation and configuration of Redhat Device Multipathing.
• Installation, Maintenance, Administration and troubleshooting of Linux and AIX.
• Installed the Operating System on Linux servers and Blades over the network.
• Built servers according to standards specified as per individual applications
• Built virtualized Linux servers on ESX and Blade servers to host multiple applications on same chassis across different server hosts
• Set up Linux servers for iSCSI LUN boot instead of using local hard disks
• Created File systems from local storage as well as NFS partitions for application portability.
• Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIM Power 4, 5 and 6 systems and Upgraded Maintenance level as well.
• Installed and verified that all AIX/Linux patches or updates are applied to the servers.
• Maintained Puppet-based configuration management in operational and production environments
• Worked and performed data-center operations including rack mounting, cabling.
• Installed, configured, and maintained WebLogic 10.x and Oracle 10g on AIX & Redhat Linux.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Monitored server and application performance & tuning via various stat commands top, vmstat, nfsstat, iostat, tuned I/O, memory, etc.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM)
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).

Confidential, NC

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration, Maintenance and Administration of Red Hat Enterprise Linux 4/5/6 and SUSE Enterprise Linux.
• Knowledge of system security, system integration principles and technologies of multiple operating systems.
• Gathering & Understanding the functional specification from the functional document.
• Administrated DHCP, DNS and Samba services in Linux System.
• Troubleshooting Day - to-Day issues with various Servers on different platforms.
• Configuring Backup solutions on SAN/NAS storage.
• Configuration, Administration and Maintenance of NFS, DNS, NIS & NIS+ on Linux Servers.
• Installation, configuration, and administration of VMware, Solaris Zones, Containers, and Ldoms
• Responsible for Patches for the operating system, building startup shell scripts, managing the automation of Cron jobs and managing file systems.
• File system Administration, Setting up Disk Quota.
• Implementing & troubleshooting NFS in Prod/ QA/ Dev environment.
• Setup virtual host for new application setup and creating documents.
• Working on evaluating new hardware and software.
• Installed/setup and maintained Splunk app for various platform of Operating system.
• Experience in System Administration Driver Configuration.
• Familiarity with message brokers such as ActiveMQ and/or RabbitMQ.
• Understanding of common data structures (arrays, hash tables, trees, and linked lists).
• Hashing and cryptographic techniques.
• Configuring different systems such as: Oracle ASM (RAC), VCS and CFS, and middleware applications.
• Provide remote support for Linux servers and maintaining SLAs, Performance tuning and enhancing.
• Production Support for 600+Linux Servers
• Customizing the applications according to the business requirements.
• Involved in troubleshooting the performance issues related to web application running on virtual machines
• Responsible for Connectivity Issues among various Servers and Switches and also responsible for installation of various hardware components on various servers.
• Work with Onsite and Offshore development teams for application development and delivery.
• Provide management reporting on daily/weekly/monthly basis.

Confidential, Chicago IL

UNIX System Administrator

Responsibilities:

• Provided on-call support by rotation to provide 24x7x365 support within a 3000 server environment.
• Comfortable working with Red Hat Linux (RHEL 3/4/5/6) and IBM AIX (4.x/5.x/6.x/7.x).
• Administration of RHEL 5 and 6 which includes installation, configuration, testing on both physical and virtual machines.
• Acquired comprehensive requirements from Project Managers, Team Leads pertaining to the servers to be migrated.
• Expert in Datacenter Operations including hardware, software setup monitoring, troubleshooting on a 24 x 7 basis with Tivoli monitoring tool, Remedy, and HP Service manager ticketing Systems.
• Utilized Remedy for data center service requests (Network requests for IP’s, ILO’s, and DNS changes).
• Performing change management as per company standards in accordance with the hardware provider.
• Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.
• Monitored trouble ticket queue to attend user and system calls.
• Reporting ticket status and communicating with requestors & box owners over Voice Conference Bridges in case of severities.
• Setting up cron schedules for backups and monitoring processes.
• VMware Infrastructure 5.x Installation & Configuration.
• Automated server building using System Imager, PXE, Kickstart and Jumpstart, for Solaris and RHEL Servers.
• Expert in Upgrades, installs, configuration and administration security and monitoring tools on Linux.
• Excellent in patches and packages installation on Linux/Unix Environment
• Build, configure and deploy Virtual machines and templates.
• Hands on experience in configuring ESX, ESXi and vSphere4 with virtual center management.
• Took part in VMware ESX (3.5,4.1) installation, updates, patches, and gathered information for capacity and performance analysis to identify potential servers for virtualization.
• Setup and configure failover load balancing using IP bonding for network cards.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Used Iptables to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel.
• Experience in iptables commands including those used to add, append, delete, insert, or replace rules within a particular chain, parameters are required to construct a packet filtering rule.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Experience in Linux kernel configuration.
• Updating YUM Repository and Redhat Package Manager (RPM).
• Monitored Linux server for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
• Building Customized Scripts for the SAN (HOST) based migrations.
• Expert in load balancing techniques and puppet management.
• Configuring RAID and build the new server using the image on system imager server with PXE boot.
• Installation and configuration of Redhat Device Multi pathing.