Summary

• 7 Years of experience in heterogeneous and complex IT environments.
• Expertise in Unix, Red Hat Linux Enterprise 4,5,6, CentOS, SUSE 9, 10, 11, Solaris 8, 9, 10, Networking, Programming Shell and Perl scripting , Databases, Software, and Hardware.
• Experience in Managing VMware ESX servers running ESX 3.x/4,x/5.x running on HP/Dell/IBM HW including C7000 Cisco UCS HW and supported 500 VM's running Linux and Windows.
• Involved in supporting VMware ESX Cluster environments and supported VMotion on VM's and Storage VMotion during Storage Migrations.
• Experience includes installation, configuration and maintenance of Applications on Solaris, Red Hat Enterprise Linux, different flavors of UNIX and all versions of Windows.
• Experience with Linux Kick Start and Solaris Jumpstart installation methods.
• Worked on designing and implementation of Datacenter migrations using VMWare Tools.
• Installing, Configuring and Maintaining DNS, NIS, NFS and Auto FS.
• Hands on experience in administration and maintenance of application services like Mail, HTTP, Apache Tomcat, Squid, DHCP, SMTP, FTP.
• Experience supporting Veritas Cluster 4/5 and Redhat Cluster running on Linux and Solaris servers to support high availability for Oracle DB servers.
• Experience working with SAN NAS environment's like EMC Clariion and NetApp filers.
• Experience installing and managing multipathing software's like EMC Power path and Native multipathing device mapper and MPXIO on Linux, Solaris and AIX.
• Worked with OS Virtualization using VMWare ESX 3/4/5 and performed ESX upgrades from 4.1 to 5.0 and 5.1.
• Created Linux and Windows VM's on VMWare ESX environment.
• Experience working with VMWare tools like vCenter vSphere to manage VM's running on ESX cluster nodes and also experience working vMotion.
• Worked with Potocols like NIS, NFS, Samba, and TCP/IP on Linux server environment and LDAP client-server model to retrieve and manipulate data.
• Exposure to Veritas NetBackup and disaster recovery planning.
• Implemented RAID levels Raid 0, Raid 1, Raid 5 for Disk management thro LVM / VERITAS Volume Management. Upgrading normal file systems to RAID levels for growing size/redundancy requirements. Replacing bad drives. Recovery of data from crashed Volumes and disk groups
• Worked with Backup Team to Configure the Master and Client Backup servers Using Veritas Net Backup and Recovery from tapes using ufsdump, ufsrestore, and tar and cpio file system administration.
• Troubleshooting various problems when working with VxVM in initializing, replacing, mirroring, and removing disk devices.
• Performed Consistent OS, APP Backup and Recovery Operations on Solaris servers and Linux, Windows Servers.
• Implemented and enhanced scripts using Korn, C shell, Bash and Perl Scripting and experienced in scheduling jobs using Crontab and At.
• Worked with Solaris Packages and Patches , Red Hat Package Manager RPM and YUM.
• Experienced on Installations, Configurations and Managing of Solaris Zones and LDoms.
• Experienced in Service Management Facility SMF
• Familiarity with various monitoring tools for monitoring large scale enterprise networks.
• Performed kernel tuning, performance tuning for different web and java related applications on RHEL and Solaris Servers
• Coordinated with SAN Team for storage allocation and Disk Dynamic Multi pathing. Worked on various SAN Products like EMC Symmetrix, Clariion.
• Experience in Performance monitoring, usage and load of the system, changing kernel parameters for better performance, creating new Slices with format and creating huge Slices with Daisy Chains.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• RDBMS installation and support including Oracle 8i/9i/10g, DB2 UDB 7/8 SQL Server.
• Experience in providing day-to-day user administration like adding/deleting users and managing user's queries
• Experience of working in Data centers with 24X7 Production and On-Call Environments.
• Excellent ability to handle significant workload with experience in managing multiple projects concurrently in a fast pace environment.

Technical Skills:

• OS: Redhat Linux 4.0 5.0,6, Solaris 8/9/10, VMWare ESX 3.x/4.x/5.x, SUSE 9, 10, 11. Windows- XP, 2003 2008 server, WIN7 .
• Hardware: HP Proliant DL 360, 380 G3, G4, G57 G6, Sun Ultra Enterprise Servers E3500,E4500,E450,E420R, 250,M4000,M5000,T2000,T5120,T5220, T5220,T5240 Sunfire 15000/6800/4800/3800/ v880/V480/V240/V210/ V440/280R , Cisco UCS, HP C7000
• Sun workstations Ultra 5, 10, 20,80 Blade 100,150, 2000
• Server Monitoring Tools: HP Open view, Nagios,HP Sitescope
• Networking: DNS, DHCP, NFS, FTP, NIS, Samba, SSH, IP-Tables, Apache, TCP/IP
• Virtualization: VMware infrastructure client, workstation, Converter standalone client,
• Microsoft virtual PC and Linux virtualization, VSphere, Zones
• SAN: EMC Clariion, EMC DMX, NetApp filer and HDS AMS Arrays.
• Volume Management: Redhat LVM, Solaris Volume Manager, Veritas Volume Manager, ZFS
• Tools: VERITAS Cluster Server 4.1, 5.1, VERITAS Volume Manager 4.0, VERITAS File Systems, Solstice Disk Suite, VERITAS Net-Backup 5.0, and Remedy 6.0, 7.1

Professional Experience:

Confidential

Linux / VMWare Administrator

• Installed and configured of hardware and OS Redhat 5/6, SUSE 11/12 on x86 servers and Solaris 10/11 on SPARC HW.
• Performed VMware ESX upgrades from 4.1 to 5.0 and 5.1 and also performed VMware HW upgrade on VM's.
• Involved in building New ESX 5.1 servers and added to ESX Clusters and performed VMotion activities during maintenance windows.
• Involved in creating Resource Pools and Port groups on VMWare ESX environments.
• Involved in creating VM Template's on VMware and deployed 100 VM's on ESX Clusters using the Templates.
• Helped in the Architectural Design for the Implementation of Single Sign On SSO in the Linux and Solaris Environment.
• Involved in SAN migrations from EMC DMX to VMAX and Clariions to VNX using zfs, Veritas and SVM on Solaris 9/10 and Linux LVM on Redhat Linux.
• Manage file systems using Logical Volume Management, Resize file systems and protect them with LVM Snapshots.
• Installed Solaris 10/11 using jumpstart and created Solaris zones on T and M series HW.
• Configure dynamic and static network settings for IPv4 and filter packets, Review file system management concepts, removable media and configure NFS shares with AutoFS
• Detecting System Failure, Resource Failure and hardware failure on SUSE Linux platforms
• Performed OS upgrades Kernel Upgrades to SUSE 11/12 and Redhat 6.5 for critical servers under production
• Troubleshooting, Working and Maintaining VERITAS Cluster in Linux SUSE Redhat Environment.
• Worked with HP Integrated Lights Out iLo software in effectively managing the server under cluster environment
• Supported the Migration Activity from One DC to another DC.
• Troubleshooting and analysis of hardware and software failures for SUSE Linux servers core dump and log file analysis .

Confidential

VMware/Linux System Administrator

• Installed and configured of hardware and OS Solaris 10, SUSE and RHEL 4/5 on x86 and SPARC servers.
• Build VMware ESX and Linux servers, configured, installed VMware tools, installed Linux and VMware patches and transitioned servers using VMware converter to production support.
• Experience creating and managing HP Proliant DL G4, G5, G6 G7, C7000 Blade Centers and Cisco UCS HW running ESX 5.0 supporting 250 VM's running Windows and Linux.
• Involved in managing and adding new Datastores on ESX Clusters and performed raw device mappings to Linux and Windows VM's.
• Involved in P2V migrations using VMware converter and also involved in Storage and Physical VMotion activities.
• Manage file systems using Software RAID and recover an array, Manage file systems using Logical Volume Management, Resize file systems and protect them with LVM Snapshots.
• Configured Kick start, Jump Start NIM servers to install Red Hat Linux, Solaris and IBM AIX on multiple machines.
• Involved in virtualization with VMWare ESX vSphere 4.1 and created VM's and performed P2V and P2P migrations.
• Installed patches to latest patch level, applied patch cluster and installed software packages as needed.
• Monitoring the hosts and networks using Iostat, VMstat, MPstat and Other Tools
• Creating user accounts, user administration, local and global groups on Solaris and Red Hat Linux platform.
• Experience working Solaris Zones/Containers and new features of Solaris 10, zone reconfiguration and file system layout modification of the containers supporting the Sybase database.
• Disk mirroring and RAID implementation using VERITAS Volume Manager and Solaris Volume Manager.
• Installed VERITAS Volume Manager and Powerpath on Red hat Linux servers.
• Security implementation through ACL, RBAC and TCP Wrappers.
• Installing, configuring, and administering DNS, NFS, NIS, Mail servers, FTP servers RPM servers on Sun Solaris and Red Hat Linux platforms.
• Installation and maintenance of Syswatch Monitoring tool in Solaris Server, wring core rules to various Solaris servers.
• Resolving regular tickets on Hawk, Syswatch and ping probe Monitoring tools.
• Configuring Solaris Zones in Solaris 10. Creating Whole root zone, Sparse zone and implementing branded zones, zone cloning , zone migration .
• Controlling the System Logging services, and examining system Log Files of all system events.
• Firmware upgrade on T2000, T5220, T5240, T5120 and T5140 and VTM patch on Solaris Servers.
• Responsible for troubleshooting and maintenance of VERITAS cluster under Solaris 10.
• Installation of OAS Oracle Application Server on Solaris 9 and its configuration with oracle database
• Performed SAN software upgrade on Solaris 8, 9 and 10 servers.
• Detecting System Failure, Resource Failure and hardware failure on Solaris platforms.
• Networking communication skills and protocols such as TCP/IP, Telnet, ftp, SSH, rlogin
• Supporting 24/7 for all web-hosting applications ETL application and on Solaris and SUSE Linux server.

Environment: VMware ESX 4/5, Redhat EL 3/4/5/6, SUSE 9/10/11, Solaris 5.8,9 and 10, Sun Fire V480,V490,V880,V890 Sun Enterprise E3500, E4500, E6500, M4000, M5000, T5220, T5120,T5140,T5240 Sun Ultra Sparc 80, VERITAS Volume Manager 3.x/4.1 Solaris Volume Manager, Oracle 11i.

Confidential

Unix/Linux Administrator

• Worked in Mission Critical Production environment that deals with OS level issues through the Enterprise.
• Regular Admin Tasks include building Linux servers for Production, Development and Test Environments and supported the ones under production.
• Performed OS upgrades for critical servers under production.
• Experience in creating file systems on LVM, VxVM
• Performed various file system changes to accommodate upgrades in applications, services and databases.
• Maintained OS/APP backups for Linux and Solaris servers
• Managed critical bundles and patches on the production servers after successfully navigating through the testing phase in the test environments.
• Worked on the virtual environments through the virtual ware clients like VMIC/ VSphere.
• Responsible for evaluating Storage Foundation Cluster File System for possible production use.
• Monitoring the hosts and networks using NAGIOS, Iostat, VMstat, MPstat and Other Tools
• Manage software on system using YUM, and RPM
• Worked on the Windows servers, upgrading the OS, resolving issues and patching regularly with Shavlik
• Worked with HP Integrated Lights Out iLo software in effectively managing the server under cluster environment.
• Implementing file sharing on the network by configuring NFS/SAMBA on the system to share essential resources.
• Good knowledge in structuring the documentation for Architectural Design and Build Plan Documents.
• Managed Disks and File systems using LVM on Linux.
• Performed day to day health check and maintained the servers by taking the down time from the users.
• Performed configuration and troubleshooting of services like NFS, NIS, DHCP, FTP, LDAP, Web servers Apache , Samba servers
• Installation of Cent OS 4.x manually and upgrading through YUM installation.
• Provided afterhours and weekend support to facilitate the issues in the production environment.

Confidential

UNIX System Administrator

• Worked in a huge enterprise environment with 250 Linux servers.
• Experienced in the installation, support, configuration and maintenance of RHEL and Solaris servers.
• Installing, upgrading and configuring Solaris 9, 10, Red hat Enterprise Linux 4, 5.1
• Worked with MySQL database installations and configurations.
• Created documentation for technical details on hardware and networking.
• Worked in 24/7 support environment for network and systems support.
• Utilization and Implementation of VMware at the full implementation range using the complex features of VMware connectivity with SAN, HA and DRS configuration. Worked on V-motion in VMware.
• Installing and Configuring nodes on a VERITAS Cluster in a SAN environment, adding VCS agents for Oracle, Sybase, troubleshooting fail over issues, resource management.
• Worked in deploying Linux and Windows virtual machines in VMware. The implementation involves SAN connectivity with VMware.
• Performed multiple Linux kick start installation both on VMware and physical servers
• Configured and distributed virtual machines on different hosts and configured v-motion. Performed template installations.
• Performing p2v migrations in Windows and Linux OS.