SUMMARY

• 7 years of experience specialized in System Administration working on Red Hat Linux, Solaris, SuSE Linux, AIX, CentOS, Fedora, OEL, Windows environments, and VMware vSphere.
• Installation and up gradation of Packages and Patches configuration management, version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in configuration ofNIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, send mail, FTP, remote access, security management and Security trouble shooting skills.
• Worked on Data - Center operation and migration across Unix and Linux platforms.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Red Hat Linux.
• Experience in Installing, upgrading and configuring Red Hat Linux 4.x, 5.x, and 6.x using Kickstart Servers
• Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LDAP, LAMP web service environment.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti, Zabbix, Puppet, Splunk.
• Experienced on Red Hat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Implemented Trip wire and Digital board band for enhancing security in huge Infrastructure environment.
• Implemented active directory using LDAP services and used in conjunction with PAM(pluggable Authentication Module).
• Participated, documented, managed ITIL controls and supported Linux environment.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at daemons.
• Good understanding of OSI Model, TCP/IP protocol suite (IP, ARP, TCP, UDP, SMTP, FTP, and TFTP)
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Installation and configuration of JBoss, Web Sphere Application Server on Linux and Solaris boxes.
• Independent problem solving and a good team player with strong interpersonal and communication skills.
• Experience supporting 24x7 production computing environments. Experience providing on-call and weekend support.
• Ability to work independently as well as a team member.
• Experienced in Trouble shooting and Back and Recovery.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5,6, Solaris Release 2.10/2.9/2.8/2.7, IBM-AIX 5.X, zVM Windows 2003, 2008, 2012 and NT

Hardware: IBM AS/400, IBM RS/6000, IBM (p series) IBM Power Systems (Power 4, 5, 6, 7), IBM Blades, Sun Fire 4800, V880, V1280 Sun Enterprise 4000, Sun Enterprise 250, Sun enterprise 220, Ultra 10, Sun Blades.

Web Servers: IBM Http Server (1.2, 1.3), IPlanet Web Server (5.1, 6.0), Netscape Enterprise Server, IIS (4.0, 5.0), and Apache

Languages: C, SQL, HTML, PHP, XML, Bash, Perl and Shell Programming, JSP, Pythonand Ruby

Databases: Oracle 8i/9i, DB2, MS SQL Server 7.0, Sybase

Networking: TCP/IP, DNS, SSH, DHCP, NFS

Tools: HACMP, Veritas Volume Manager, Veritas Netbackup, VMware VSphere, ESX/ESXi, VCenter Server, Datacenter Puppet, Splunk, Chef and NagiosOther Skills: Remedy, Espresso, OpenView, MS Office

PROFESSIONAL EXPERIENCE

Senior UNIX Linux System Administrator

Confidential, Cupertino, CA

Responsibilities:

• Building and supporting environments consisting Testing, Contingency, Production and Disaster Recovery servers.
• Implemented puppet, Nagios, Splunk, Performed OS provisioning using kickstart through BMC Blade Logic.
• Performed patching of RHEL using yum, up2date package management system utilities for effective package maintenance.
• Supporting infrastructure environment comprising of RHEL and Solaris and AIX.
• Experience with VMware Virtualization using ESX hypervisor of VSphere.
• Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Rebuilding of kernel in RHEL using mkinitrd image and monitored logs in in-built directories during server bootup.
• Worked on projects like PCI, SR to ensure all goes well and provided support till servers go in to production environment.
• Configuration of Network bonding which include Active/Standby and Active/Active.
• Troubleshooting Network, memory, CPU, swap and File system issues, TCP/IP, NFS, DNS, SMTP in Linux and Solaris servers.
• Performance tuning of Virtual Memory, CPU, system usage in Linux and Solaris servers.
• Supported class monitoring and management tools such as Open NMS, Tivoli and VCO.
• Performance Monitoring and Performance Tuning using Top, prstat, SAR, vmstat, ps, iostat.
• Building of Oracle RAC (Oracle Real Application Clusters) environment.
• Performed Disaster Recovery in RHEL servers which consists of LVM based FS and Red Hat Clustering.
• Installation, configuration and administration of Jboss, Apache, Tomcat and Web Sphere.
• Develop, Maintain, update various script for services(start, stop, restart, recycle, cron jobs) Unix based Korn shell, Bash.
• Updated & Running the various source code for migration & updating follow-up the release management.
• User, Group, Package administration, various repetitive activities across Linux Environment.
• Creation, initialization, addition of Oracle ASM and FSR devices in multipath environment
• Creation of Jumpstart and Kickstart configuration for the automatic provision of servers using Bladelogic.
• Installation of third party tools using packages on Debian and Ubuntu using apt-get utility and dpkg.

Environment: Red Hat Linux 5.X, HP & Dell Servers, Oracle/DB2, VMWare ESX 4.x, Autosys, VMware VSphere, ESX, BMC BladeLogic.

UNIX Linux System Administrator

Confidential, Virginia beach, VA

Responsibilities:

• Implemented automated scripts using Bash, Perl, Python scripting as when required at various levels.
• Implemented automations tools Chef, Puppet, Splunk.
• Worked exclusively on VMware virtual environment.
• Experience in using VMware vMotion to move VM’s from One Datacenter to another datacenter.
• Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server, yum, etc.
• Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.
• Worked on variety of Linux platforms Red Hat Linux, Solaris which includes installation, configuring and maintenance of applications on this environment.
• Involved in installation and configuration of various Third party software onto servers.
• Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX and Solaris.
• Installed packages using YUM and Red hat Package Manager (RPM) on various servers.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Performed the daily system administration tasks like managing system resources and end users support operations and security.
• Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.
• Involved in ILMT Agent Deployments and Oracle/SQL Upgrade project which includes various UNIX builds of different OS platforms across various data centers.
• Responsible for independent support of Tier 2 issues: reboots, start/stop services, reset Terminal Service and pc anywhere connections, and administrative server maintenance. Daily follow up with clients to ensure resolution of all issues.
• Provide support to Account Managers, UNIX and Windows technicians, and other departments.
• Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux.
• Coordinated with various cross functional teams across IT operations to make sure smooth functioning of projects.
• Worked on projects like PCI, SR to ensure all goes well and provided support till servers go in to production environment.
• Worked closely with DBA Team in order to adjust kernel parameters as per requirements.
• Day to day resolution on Linux based issued though SMS ticketing system in compliance to SLA cycles.
• Performed application installation and management on IBM AIX and Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
• Automating many day to day tasks through Bash scripting.

Environment: Red Hat Enterprise Linux 4.x/5.x/6.1, AIX 6.x, Solaris 8/ 9/10, Tivoli Storage Manager, VMware ESX5, Tivoli Net backup, and Web sphere. Windows 2012 servers, Windows 2008, IIS 7.0 & 7.5.

UNIX Linux System Administrator

Confidential, New York, NY

Responsibilities:

• Maintaining and Troubleshooting of FTP Server, Samba Server of the client
• Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Maintain 99.98% uptime of LINUX production servers and follow proper escalation.
• Responsible to solve technical Problems related System administration (Linux of Our Clients).
• Managing Red Hat Cluster, HPC environment etc.
• Building & configuring Red Hat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis.
• Handling LVM related tasks, Creating, resizing LVM, Veritas Volume manager and also managing Cluster environment using Veritas Cluster suite.
• Handling the day-to-day Operations, Troubleshooting & Solve Server Problems in LINUX.
• Implemented automations tools DevOps
• Installing and configuring Red Hat Linux locally or over the network-kick start- (nfs, ftp, http).
• Experience in building binaries using Maven & Xcode.
• Maintaining Server and Systems, provide IT support to User.
• User Administration (setup and maintaining accounts).
• Monitoring system performance, Server load and bandwidth issues.
• Work with DBAs on installation of DB, restoration and performance tuning.
• Updating Systems, Servers and client software's.
• Implement the policies for the users of the computer system and network.
• Regularly manage backup process for Server and Client data.
• Installing open source application, search, analyze and develop new application for users.

Environment: Centos 5.7/6, Red Hat Linux 5.7/6, Ubuntu 10.04/10.10/11.10, Fedora 17

UNIX Linux System Administrator

Confidential

Responsibilities:

• Installation of patches and packages using RPM and YUM in Red hat Linux.
• Created and modified application related objects, created Profiles, users, roles and maintained system security.
• Responsible for setting up cron jobs scripts on production servers.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Responsible for writing/modifying scripts using bash, ksh, and bash for day-to-day administration.
• Modified Kernel parameters to improve the server performance in Linux.
• Creation of Logical volumes (LVM) for Linux operating systems.
• Installed and configured Apache / Tomcat web server.
• Involved in design, configuration, installation, implementation, management, maintain and support for the Corporate Linux servers RHEL 4x, 5.x, CENTOS 5.x.
• Coordinating with 24 x 7 on-call support personnel in debugging.
• Maintained proper documentation of all the activities carried out during the project
• Worked with DBA team for database performance issues, network related issues on Linux Servers.
• Maintained proper documentation of all the activities carried out during the project.
• Created and modified users and groups with SUDO permission.
• Installed and configured VNC server/client.
• Coordinating users for any server activities which may involve major changes on software or any hardware related issues.

Environment: Red Hat Linux (RHEL 4/5), Logical Volume Manager, Global File System, Red Hat Cluster Servers, Oracle, MySQL, DNS, NIS, NFS, Apache, Tomcat.