SUMMARY

• Over 7+ years of experience specialized in System Administration working on Redhat Linux 4.X, 5.X, 6.x, Solarisenvironments.
• Extensive experience in installation, configuration and administration of Redhat 4.x, 5.x, 6.x using KickstartServer, Solaris 8, 9, 10 usingJumpstart Servers.
• Experience in implementing and monitoring High Availability environment using Veritas Cluster Server, Sun Cluster, Redhat Cluster.
• Extensively worked on solaris10 containers, Zones and LDOMS for Virtualization.
• Experienced with the installation, configuration of RAID volume management using VERITAS Volume Manager and Solstice Disk Suite on Solaris.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager (VxVM), Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
• Experience in Sun Solaris 10 Container Technology which includes Creation of Zones, Service Management Facilities, Virtualization, Container based, Managed resources for zones.
• Installs, Upgrades, Patches, Configuration, performance tuning on UNIX and system software & hardware.
• Experience in creating physical volume, logical volume, and volume groups using LVM’s in Linux, SVM, GFS (global file system) and ZFS in Solaris.
• Experienced in VMware ESXi 5.x, ESX servers (ESX 3.x, 4.x &vsphere, vCenter), VMotion, Cloning resource pools, snapshots, VM performance monitoring, VMware architecture, design and implementation experience including VMware migrations from 4.0 to 4.1., and from 4.1 to 5.1 migration.
• Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio.
• Proficient in Configuring Red Hat Linux into a Puppet Environment for automating administrative tasks and file security.
• Experience in designing and configuring open source management tools Puppet, Chef and CFEngine.
• Extensive Experience in VMware vSphere 3/4/5 version ESXi and vCenter operations Management.
• Experience in SAN environments like EMC Storage Systems EMC Symmetrix DMX3, DMX4 and ClariionCX3 series arrays & Emulex - QLogic HBA’sand TSM (Tivoli Storage Management).
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, sendmail, ftp, remote access, security management and Security trouble shooting skills.
• Experience writing shell scripts to automate the administrative tasks and management using cron and at.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Experienced of working in Data centers with 24X7 Production and On-Call Environments.
• Effective Team player with strong interpersonal and communication skills, Self-motivated, dynamic thinker with sound judgment and solid problem solving skills.

TECHNICAL SKILLS

Operating Systems: Red Hat Linux 4.x, 5.x, 6.x, IBM-AIX 4.x, 5.x.6.x, Sun Solaris 10, 9,8.

Software: VERITAS File System, VERITAS Volume Manager, Solaris Volume Manage, Solstice Disk Suite 4.x, Logical Volume Manger, Veritas Cluster Server and Veritas Netbackup.

Cluster: VERITAS Cluster Server, Sun Cluster Server, Redhat Clusters and Service Guard

Web/Application Server: Tomcat, Apache, IBM RSA/WAS, Web Sphere

Languages: C ++,Java, VB 6.0, XML, HTML, Shell (bash, C and Ksh), Perl, Php and Python.

PROFESSIONAL EXPERIENCE

Confidential, New York, NY

Sr. Linux / UNIX System Administrator

Responsibilities:

• RedHat Enterprise Linux Operating System Installation, Building Servers and administration of RHEL 4, 5, 6 which includes testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Leading and Mentoring the Solaris/Linux offshore team and dealing with clients directly. First level of Escalation points for all the BAU activities delivered by the team.
• As a Solaris administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third partytools, securing of OS, installing & configuring, job scheduling.
• Solaris Live Upgrade from Solaris 8, 9 and old update from Solaris 10 newer update version across the whole environment.
• Experience working with Solaris Zones/Containers/LDOMS and new features of Solaris 10, zone reconfiguration and file system layout modification of the containers supporting the Sybase and Oracle database.
• Configured and setup LDOMS from the scratch on T-series harware.
• Installation and configuration of management tool Puppet across RHEL environment.
• Developed the scripts to push patches, files and maintain configuration drift through the Puppet tool
• Created Zetabyte file system (ZFS) in Solaris 10. Creating Zones, zpools and adding resources like network, filesystems.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager & Solaris Volume Manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Worked on Disaster recovery of Solaris servers using Sun DiskSuite and Veritas Storage foundation.
• Troubleshooting the VERITAS Netback up problems like backup issues, Media and Master servers problems and Setting up the Masters, Media servers and SSO.
• Administering file systems and recognizing file access problems and Disk problems using VERITAS Volume Manager and VERITAS File systems.
• Configured Puppet to the Linux environment to automate Admins Tasks and secure files.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Installing and configuring Apache and supporting them on Linux production servers.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Configured NIC Bonding on the servers, created File systems, extended the Logical Volume space as per the business requirements.
• Installed, configured, cloned VMs on VMware 5, Vsphere 4.0, configured ESX hosts, adding datastores to ESX hosts, creating vswitches, templates, migrating VMs across ESX hosts.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clientsandAutoFs File systems.
• Experience in Developing KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogicapplication server.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.

Environment: Hardware: SUN Architecture T2000, T3000, M5000, v1280, B100S, B1600, e420r, e450, e6900, FAS250, v210, v240, v280, v2900, v440, v480, v490, v880, X4200, V100 and workstations, SUN Ultra Sparc 5/10Software: Solaris 7, 8, 9 &10, VERITAS Netback up 5.1, Vom3.1,4.0, Red Hat Linux 5.x, 6.x, VMware 5.x.

Confidential, Poughkeepsie, NY

Unix / Linux System Administrator

Responsibilities:

• Worked on Building and configuring Solaris 8/9/10 using Jump start server and Red Hat Linux Servers using KickStart server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• OS upgrades, Maintenance level updates, System re-built, Server de-commissioning, LVM-FS modifications, Increase/decrease/remove VG/FS with new disk on co-ordination with SAN team through maintenance window and un-scheduled outages in case of emergency.
• Disk mirroring and RAID implementation using VERITAS Volume Manager, Solaris Disk Suite and Linux LVM.
• Trouble shooted various problems when working with VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices.
• Implementing change controls during nightly maintenance for all System & Application upgrades as well as OS patching, VERITAS Cluster server, VxVM upgrades and Firmware upgrades.
• Worked with VERITAS Volume Manager, VERITAS Cluster Server in all environments. As a member of the team, monitored the VER ITAS Cluster Server 4.1 in SAN Environment.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VERITAS Cluster Sserver 4.1 in heterogeneous SAN environment.
• Installed and configured Solaris 10 servers with Zones and containers on SUN M5000 and T2000 Servers with SUN ZFS.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Performed migration from RHEL 4 to RHEL 5& automated installations of Operating System using kickstartfor RHEL.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' and Monitored server and application performance & tuning via various stat commands like vmstat, nfsstat, iostatetc and tuned I/O, memory, etc.
• Extensive use of Korn shell, Bash for scripting.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• NFS and Auto mounting of File systems across many servers, Adding extra Disk space when file systems are full. production environment.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Installing, administering Redhat using Xen, KVM based hypervisors.RPM and YUM package installations, patch and other server management.
• Installed, configured, and maintained WebLogic 8.x and Oracle 10g on Solaris &Redhat Linux.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Network management and configuration with DNS and NIS, with emphasis on user and company security based on User ID and network topology.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Expertise in VMware vSphere 3/4/5 version ESXi and vCenter operations Management.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Red hat Linux 4, 5, 6, Solaris 8,9,10 (Various Sun Hardwares), Web logic 8.x, Oracle 10g/11g RAC, SAN, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential, Danbury, CT.

UNIX System Administrator

Responsibilities:

• Expertise operations support for UNIX infrastructure (AIX & Linux/VMWare/Solaris{L1}), RHEL/HMC/FRAMES/VIOS/VMWARE/Solaris (L1).
• Performed migration from RHEL 4 to RHEL 5 & automated installations of Operating System using kickstartfor RHEL.
• Excellent knowledge on LVM configuration (AIX/Redhat Linux),Knowledge of Bash/Shell and Perl scripting.
• Expertise in Knowledge Transition for Unix Infrastructure (Solaris/Linux), Part of Solaris/Linux Design, Project and Delivery Team.
• Perform regular update to the latest patches for SUN Solaris and Linux machines.
• Installation and configuration Veritas NetBackup on Severs and performing Backup using Veritas Net Backup.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Installation and configuration Veritas NetBackup on Sun Severs and performing Backup using Veritas Net Backup.
• Package deployment in AIX, Linux & Solaris servers.
• Administration & troubleshooting of Solaris 8, 10 servers involving new server build and creation of VERITAS volume manager file systems.
• Monitoring and troubleshooting disk failures in VERITAS VxVM and SVM.
• Building and managing UNIX and LINUX servers on VMware platform.
• Responsible for day to day monitoring and verifying of Unix Systems integrity, using scripts and system logs.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Designed & Implemented System Security administration policies. Systems security administration policies included: User ID/Group ID management, Password policies, password aging.
• Integrating Weblogic10.x and Apache2.x and deploying EAR, WAR files in Weblogic Application server.
• Involved in supporting and configuring applications on Oracle and MySQL database Environments.

Environment: Redhat 4.x, 5.x, IBM AIX 4.x, Solaris 8, 9, 10, Apache Web Server 1.3.x, 2.x Oracle 8i, 9i2.

Confidential

UNIX System Administrator

Responsibilities:

• OS upgrades, Maintenance level updates, System re-built, Server de-commissioning, LVM-FS modifications, Increase/decrease/remove VG/FS with new disk on co-ordination with SAN team through maintenance window and un-scheduled outages in case of emergency.
• Installing the software packages and patches.
• Involved in LPAR/DLPAR creation and LPAR/DLPAR move through scheduled Outages.
• Jumpstart &Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Installed Veritas Volume Manager, VCS Cluster Server for failover and for mirroring and raid level configurations on EMC storage frames.
• Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS).
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Key player in Change activities in co-ordination with On-shore team
• Involved in Disaster recovery exercise like San migration, Power outages etc.
• Analyzing the client servers and providing them suggestions to improve the performance and stability Provide accurate and timely solutions as per SLA defined.
• Installation and configuration of NIS, DNS, NFS, LVM configuration, RAID 0, 0+1, RAID 5.
• Worked with ActivePerl, PERL 5, UNIX shell scripts, C source code, SQL, and various front end utilities PLUS utilized Oracle & Access as part of the Utilities process cycle

Environment: Red Hat Enterprise Linux 4.x, 5.x, Solaris 8,9, AIX 4.x, Logical VM, VCS 5.1.