OBJECTIVE:

• An industrious and responsible individual with Plus nine years of experience in LINUX system administration .

SUMMARY

• RHCE (Red Hat Certified Engineer) with over 9.0 years of professional IT experience in System Administration, involved in Remote support, Network setup and maintenance and migration activities .
• Experience in multiple unix flavours Redhat, Centos,Suse .
• Experience in multiple virtualization technologies Xen, Citrix xenserver, xencenter, VM migration.
• Experience in designing, implementing and provisioning whole rack xen pools over Dell hardware.
• Experience in Unix Shell scripting and Perl scripting for task automation and day to day requirements .
• Experience in administering Linux. Installation, Kickstart, Configuration and Support of Linux Systems.
• Experience in setting up hypervisor DOM0, DOMU’s and automatic server building PXE, kickstart, tftp boot
• Experience on DNS, VSFTPD, NFS, NIS, DHCP, Apache, Sendmail Configuration and Management.
• Hands on Experience on RAID/LVM/Quota’s Configuration & Management
• Experience in managing Users and groups and their ageing policies on UNIX base systems.
• Extensive knowledge in Linux based server environment administration including setting up server and server software, kernel tuning as per the requirement and general troubleshooting of the environment.
• Hands on experience in real time troubleshooting of live server environments
• In - depth experience in developing and supporting both production and development environments.
• Responsible for administration of various servers in production environment which includes production web servers, application servers, database servers, mail servers etc.
• Responsible for creating and maintaining firewall rules for the production environment. Setting up and maintaining web server/app server in a virtual hosting environment for optimum performance.
• Restoring the live servers from backup in case of server failure like hard drive failure
• Responsible for all access control and security measures in the onsite/offshore model development environment.
• Deploying the products/patches into production environment. Involved in database patching for the live apps.
• Upgrading/compiling kernel
• Apache tomcat configurations and virtual host configurations.
• Good understanding of networking and networking concepts like subnetting, VLSM and acls .
• Experience in building and scheduling complex Unix application flows through Control M server .

TECHNICAL SKILLS

Operating System: Redhat, Centos, Suse, Solaris 10

Hardware: Dell 420 xd

Virtualization: Xen, Citrix Xenserver

Scripting: Shell Scripting, Awk, Sed, Perl

Service: DNS, NFS, AutoFS, Samba, Ssh, Sftp, Ftp, Dhcp

Authentication Servers: NIS

Middleware: Apache, Tomcat

Proxy Servers/Firewalls: Squid / Iptables

Databases: Mysql

Schedulers: Cron, at and BMC Control M,Xencenter

Mail Servers: Sendmail, Postfix

Others: Kernel Up Gradation, Tuning

Ticketing Tools: HP Service Desk, Remedy, CA Service Desk, Service Now

PROFESSIONAL EXPERIENCE

Senior Unix Operations Engineer

Confidential

Responsibilities:

• Design and implement scripts for cloning vms through lvm snapshots to reduce downtime in migration .
• Design, plan and implement private cloud setup of whole rack xen pools .
• Plan and provision of vms in xenpools for various requirements .
• Maintain cobbler profiles and distros for physical server build out and vm provisioning .
• Create and maintain ftp servers for customer file uploads .
• Experience in migrating physical to virtual servers to reduce rack space, memory footprint etc .
• Create and maintain zypper and yum repositories for suse and redhat enterprise servers .
• Create and maintain NFS filers through Dell arrays, plan storage expansion .
• Implement system log rotation and central syslog servers .
• System troubleshooting, kernel optimisation for various applications, databases .
• Compile kernel modules for devices .
• Install and maintain perl and python modules as per user requirements .
• Maintain inventory of all vms, servers and xenpools .
• Capacity planning for storage and server infrastructure for growth .
• Building, Imaging and maintaining System image for Redhat Enterprise and Suse servers .
• Maintain documentation for contribution to the production wiki database for sharing among the team.

Systems Engineer

Confidential

Responsibilities:

• Advanced scripting skills in shell and perl and reduced manual work and hours through automation.
• Created and deployed complex production shell scripts for application server startup and shutdown and for checking error logs during bounce .
• Created monitoring script for various parameters with graphic web interface using perl CGI over Sun apache platforms with mysql backend DataBase.
• Excel reports generation using perl scripts .
• Created lots of XML file sorter perl scripts for corrections in large no. of XML files as per the requirement .
• Created perl scripts for automating daily reports into excel files reducing manual efforts .
• Other utilities like modifying bdf and grep output to user friendly output for HP-UX.
• Shell scripts for interfacing the DB environments .
• Scripts for monitoring logs, checking disk utilisation, performance monitoring in boxes, package installation and upgrade over the network etc .
• Server build network installation, kickstart, pxe boot server and configuration.
• Building, Imaging and maintaining System image for Redhat Enterprise Linux 5 servers.
• Puppet deployment and server configuration management with puppet .
• Install configure and maintain Xen Virtual Linux servers .
• Troubleshooting various problems related to VM’s and Hypervisors.
• Building new hosts for DBA’s and various application team.
• Configuring and maintaining disk related activities like VGs and LVMs as required by DBAs.
• Discuss requirements with DBAs and create and deploy scripts from scratch .
• Install and configuring apache - virtual hosting and ftp servers, NFS servers as per user requirements .
• Configured/Tweak kernel parameters for better performance.
• Install/test new kernels for various performance tests.
• Adding functionality of converting sd/hd disks to xvd and also to attach them on fly.
• Configuring and maintaining YUM Repository.
• Cloning and migrating virtual machines in Xen domain.
• Maintain documentation for contribution to the production wiki database for sharing among the team.

Systems Engineer

Confidential

Responsibilities:

• Script for extracting user data from raw data generated from SQL queries saving time about 4 hours a day .
• Script for user deletion and addition by reading data from raw files .
• Script for reporting the replication status of reporting servers .
• Scripts for transferring patches and updating softwares across the servers in the network .
• Scripts for updating configuration files in servers in the network
• Scripts for zipping logs by checking disk utilisation in boxes.
• Maintaining and managing EA Sports Systems infrastructure and providing 24*7, L2 level remote support to Linux/Unix Servers across the globe.
• Responsible for maintaining Online and Corporate environments of EA. Resolve bugs reported by quality control team.
• Tracking all the Incidents and Tasks through CA Ticketing Tool and convert recurring incidents into problems.
• Deploy packages through IDJIT Web console and apply OS patches .
• Troubleshooting performance issues like CPU load, memory, disk errors and other OS related errors. Identify and rebuild disk in failed RAID arrays.
• Look after Xen server issues, general issues in domU .
• Co-ordinating with DELL support for server hardware related issues.
• New server buildup, rejumping servers.
• Scheduling and Troubleshooting batch jobs.
• Generated documentation about applications, processes, procedures and Relationship with vendors and customer’s documentation aimed at all levels: admin, NOC, personnel and non-technical staff.
• Create shell scripts to automate system activities like reporting, installation of packages in a no. of systems, and to automate notification to admin.
• Configure and run shell scripts as per the requirements in day to day task to save time and task automation .
• Configured shell scripts for monitoring a group of systems and for log rotation.
• Maintain and administer Apache web server, configure virtual hosting, tomcat integration.
• Look after daily issues faced by user.
• Configured monitoring system for notification of system failures.
• Setting up user and groups’ management.
• Daily Backups of Databases and File Systems - Monitoring, Scheduling and troubleshooting.
• Install and remove packages using RPM, YUM utilities.
• Protecting user data using Sticky Bit.
• Implemented syslog for Log monitoring of Different critical servers of organization.
• SSH password less pass-through between two servers, implemented with shell scripts to all the servers in the network.
• Troubleshooting system routing and Network card issues.
• Troubleshooting Linux servers booting or any other issues through DRAC / Consoles.

Technical Head

Confidential

Responsibilities:

• Managing administration of information system, configuration & maintenance of servers.
• Designing, implementing & supporting networks which include Windows & Linux systems.
• Configured SAMBA PDC for the entire host in the network.
• Using SAMBA for sharing & mapping Linux file systems in to Windows machines.
• Configuring Firewall as per the requirement .
• Maintaining the network infrastructure, installing & configuring network client workstations.
• Responsible for user/group/domain management for network resources.
• Configuring & maintaining Linux & Windows, administer & support Linux system running, Support Tomcat & HTTP server (Apache), NFS, Mail Server (Mail enable) & DNS.
• Troubleshooting operating system, software, hardware & other problems.
• Manage and troubleshoot network infrastructure, implement ACLs, configure subnets etc.
• User and Group administration: Implementing Aging Policies, Sudo Access, SSH restrictions
• Managing Quota (disk space limitation) for users and groups.

Confidential

Systems Engineer

Responsibilities:

• Setting up Remote installation server for the network .
• Administration of network .
• Maintain dhcp, ftp, nfs, web and samba server for the network .
• Installation/troubleshooting of servers in the network.
• Maintenance and configuration of sendmail mail server.
• Kernel and other server software updates.
• Looking after overall system and network hardware