SUMMARY

• 10+ years of experience working as a system administrator in complex high end server/client environment consisting multi - operating systems (with emphasis on Solaris, RedhatLINUX and IBM AIX environment)and in which my responsibilities include design, installation, configuration, maintenance, tuning and troubleshooting of servers running onRedhat Linux 3/4/5/6.
• Extensive experience in installation, configuration, maintenance, design, development, implementation, and support onRedhat Linux 3, 4, 5& 6.
• Extensive experience inRedhatLinux / UNIXadministration and Enterprise Server Integration
• Involved in creating and configuring Zones/Containers, zfsfilesystems in Solaris 10 environment.
• High level of skill with UNIX OS commands and utilities.
• Created ZFS,ext3,CIFS,NFSfilesystems on Solaris 10 and Redhat Linux environment.
• Involved and Executed migration tasks like SAN migration both host based and array based migrations from Solaris to Linux.
• Configuring Role-Based Access Control (RBAC) & Access Control List (ACL).
• Virtualization of servers with VMware and Solaris Zones.
• Experience in installation, configuration, tuning, security, backup, recovery and upgrades of Redhat Linux.
• Experience with NIDS (Snort) & open LDAP and Configured LDAP Server and LDAP Client on Linux.
• Installed and Managed EMC SAN devices using EMC Powerptah and SRDF on Linux and Unix servers.
• Proficient in working on Solaris 10,11 on Oracle Blade Servers 6000, 6080, Sun M5000/M4000, T5120,T5140/T2000, Sun V490. V880, IBM AIX Power and RHEL 4/5/6.
• Strong Experience in disaster recovery procedure (BMR)on UNIX systems.
• Expertise in Installation, configuring and Administration of VERITAS Volume Manager 3.5, 4.1, 5 and working knowledge of VERITAS Cluster Server 5.0 and VERITAS Netback up 6.0 and Tivoli Storage Manager 6.
• Applied progressive backup methodology for backup of important files, sub files and directories available on TSM clients.
• Excellent client relation skills and the drive to complete tasks effectively and efficiently where customer services and technical skills are demanded as well as the ability to communicate effectively.
• Quick learner and team player with strong analytical, trouble-shooting and communication skills.
• Provides 24X7 support oncall rotation basis.

TECHNICAL SKILLS

Operating System: RedHat Enterprise 3/4/5/6, SUSE Enterprise Linux 10.0/9.0/8.0 , Solaris 8/9/10, HPUX 11i, V1, V2 & V3, Windows NT/2000/2003 Server, AIX 5.3 6.1, 7.1.

Storage: IBM SAN,EMC SAN storage, Tivoli storage manager 5.4/5.3 and Netbackup.

Languages: Korn Shell Scripting, Perl Scripting, C, C ++

Databases: Oracle 10g/11g, Cache, DB2.

Webservers: IBM WebSphere 4/5/6, IBM HTTP Server and Apache

Hardware: IBM P/P5series (p795, p770, p690, p670, p630, p510, p590, p570, p520, p575, p595 etc) supported by POWER4, POWER5 and POWER6 IBM Pseries.

Others: DNS, DHCP, NPIV, NFS, NIM, NIS, OpenSSH, LDAP, HACMP, SAN, NAS, TSM, HMC.

PROFESSIONAL EXPERIENCE

Confidential, CT

Linux Administrator

Responsibilities:

• RHEL-6, Solaris 10, SUSE Enterprise Linux 11 Server build and Administration.Installation, Maintenance, Administration and troubleshooting of Linux, windows servers
• Performed automated installations of Operating System using kick start for Linux
• Installing and configuring services such as Apache, DNS, SMTP, HTTPD, NTP, DHCP and supporting them on Linux production servers.
• Installed, upgraded and configured RHEL 5.x/4.x/3.x and SUN Solaris 9.x/10.x. This included Kickstart Installation, Confidential -SAS and CD media.
• Installed/Configured WebLogic 10.x/9.x and Tuxedo 8.x/10.x Application Servers.
• Installed/ managed software policies using Confidential -SAS on the Servers and added OS patches using APT installer.
• Autosys server components implementation with administration and helping the teams to configure their project and the production job cycles on the Autosys server with automating the jobs.
• Creation of file systems using ZFS and setup quotas in zpools, zpool mirroring, adding storage to the zpool, setting up devices in the zpool using RAID levels.
• Experience in virtualization using VMware ESX 4.0, vSphere 4.0, Solaris zones andXen Server.
• Applying Patch bundles and upgrading Solaris 10 and RHEL-6 various applications.
• 24/7 on call production support. Working experience on the production issues and severity 1 tickets through ticket management system.
• Worked with Virtualization software (Xen)
• Worked with Network Attached Storage devices and RAID technology
• Worked with Netbackup.
• Shell, Perl scripting for automating changes during move to speed up process.
• Application level backup using tar for archiving to local systems and Commvault backup for enterprise wide backup and recovery.
• Worked in managing VMware Server to build guest OS using vSphere client.

Environment: Description: Red Hat Enterprise Linux 6.0, SUSE 11 SP2, Solaris 11, 10, VMware ESX 4.0, vSphere 4.0, Solaris zones, Xen Server, Veritas Storage Foundation 5.0, 6.0, Cluster Server 6.0, ZFS File Systems and RAID levels.

Confidential, Houston, TX

UNIX Implementation Engineer

Responsibilities:

• Provisioning and installing of Linux RHEL, Centos operating systems on x86 and Dell PowerEdge server. This included provisioning the environments on VMs created on vSphere 4.0
• Performed Disk administration using LVM’s and implemented file system expansion
• Performance Analysis of resources like CPU, Memory, Disk and Swap from command line using commands like prstat, vmstat, sar, iostat, swap
• Troubleshooting webserver Apache 3.x; Configuring NIC bonding on Linux server.
• Configuring password less login through SSH. Generating key using ssh-keygen
• Patch and package administration for installation of patches as per the company policy and installation of packaged application
• Provided administration of AIX server
• Configuring and implementing DHCP, DNS, SAMBA installation and configuration on different. Platforms in heterogeneous Network environment
• Editing crontab adding and deleting automated scripts
• Backup/Recovery using tar, CPIO.
• Installing, configuring and troubleshooting of Web/Application Servers like Apache, Tomcat, Web Logic, Send mail, qmail, IMAP and Netegrity Site Minder policy servers.
• Done P2P migration and P2V migration from physical to physical and physical to virtual servers.
• Experience in virtualization using VMware ESX 4.0, vSphere 4.0, Solaris zones andXen Server.
• Applying Patch bundles and upgrading Solaris 10 and RHEL-6 various applications.
• Installing and configuring Jboss application server in Unix Box.
• User, Group management for all the UNIX servers and also used sudoers on Linux
• Modifying/ Writing scripts in Bash and Korn shell for optimizing day to day administration
• Creating and modifying Standing Operating procedures for the team.
• Following change management process and tickets using remedy tool.
• Support on-call on rotation basis 24 * 7

Environment: PowerEdge server, Jboss, IMAP, AIX server, Web/Application Servers, webserver Apache 3.x, DHCP, DNS, SAMBA, Solaris 11, 10, RHEL-6.

Confidential, Columbus, OH

LINUX Administrator

Responsibilities:

• Installed Redhat Enterprise Server 5.3 and 5.4 on Confidential Servers using Kickstart at different Merck sites around the world in Vmware and Physical Servers
• Setup and configured network TCP/IP on Linuxnodes including RPC connectivity for NFS.
• Created mount points for Server directories, and mounted these directories on the Servers.
• Diagnosed and troubleshoot software and hardware related problems.
• Good knowledge of installing UNIX basedoperating systems on LPAR.
• Installed and deployed operating system and security related patches and fixes.
• Setting up installable image of AIX operating system on master server and apply it on new clients.
• Installed, upgraded and configured RHEL 5.x/4.x/3.x and SUN Solaris 9.x/10.x. This included Kickstart Installation, Confidential -SAS and CD media.
• Installed, upgraded and configured RHEL 5.x/4.x/3.x and SUN Solaris 9.x/10.x. This included Kickstart Installation, Confidential -SAS and CD media.
• Experience supporting Redhat LVM and Linux tools like top,vmstart&iostat for System Administration activities.
• Implementing and Managing RAID levels using VxVM.
• Creating, resizing and mounting the VERITAS file systems.
• Good working knowledge of installing, configuring, and upgrading IBM Blade Center’s Management Module.
• Implemented, installed and supported High availability Cluster HACMP 5.3 on IBM Pseries platform.
• Developed Shell scripts for automating the batch jobs.
• Involved in Storage management, LVM, File system management, User account management, data backups and user’s logon support.
• Involved in testingof products and documentation of necessary changes required in this environment.
• Configuration of monitoring tool (Nagios) for monitoring of over 100 servers and various services running on the servers.

Environment: Storage management, Redhat Enterprise Server 5.3 and 5.4, TCP/IP, IBM Pseries, RAID, AIX, SUN Solaris 9.x/10.x, RHEL 5.x/4.x/3.x, data backups.

Confidential, Princeton,NJ

Linux Administrator

Responsibilities:

• Worked as Unix Administrator in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives
• Handling Confidential and DELL servers running on Red hat Linux, Cent OS.
• Working on multipathing software like Powerpath of EMC.
• Used the LVM extensively; Created/Modified/Deleted Volume Groups, Logical Volumes and File systems; Added/Removed physical disks; Mirrored Volume Groups and Logical Volumes
• Administered a heterogeneous environment comprising MS Windows 2003 Server, Red Hat Linux. Administration involved installation, configuration, evaluation, implementation and support of strategic Business systems in a heterogeneous environment.
• Experience supporting Redhat Linux servers running Oracle databases.
• Configured HACMP to monitor, detect and react to failure events, allowing the system to stay available during unexpected software problems and also configured to react to hundreds of system events.
• Involved in preparation of functional and system specifications. Estimated Storage requirements for applications.
• Rack mounted IBM p630 systems, installed and configured AIX and applied maintenance levels.
• Installed recommended patches on AIX.
• Managed file permissions & ownership for important directories & files.
• Implemented DNS, NFS, NIS, Auto mount networking services.
• Troubleshooting of all kind of OS related and hardware related issues on the Linux servers.

Environment: Red hat Linux, Windows 2003 Server, Linux servers, IBM p630, Powerpath, Cent OS, AIX,DNS, NFS, NIS, Oracle databases.

Confidential

Linux System Administrator

Responsibilities:

• Worked as Unix Administrator in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives
• Administered a heterogeneous environment comprising MS Windows 2003 Server, Red Hat Linux and AIX. Administration involved installation, configuration, evaluation, implementation and support of strategic Business systems in a heterogeneous environment.
• Handling Confidential and IBM servers running on SuSe, Red hat.
• Handling day to day administration jobs in SuSe Linux and Red hat Linux
• Installed OS using automatic installation using Autoyast and Kick start.
• Setup LDAP Client services on Linux Servers.
• Creation of LVM's on SAN using Linux utilities
• Configured UNIX infrastructure, and supported IBM RS/6000 servers running IBM AIX.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Managercommands. Maintained availability, increased capacity & performance of production machines by upgrading their hardware (disks, CPU, memory, IO board, power cooling unit, motherboard etc)& firmware.
• Troubleshooting of all kind of OS related and hardware related issues on the Linux servers
• Performed process automation, scheduling of processes using CRON jobs.
• Designed & Implemented System Security administration policies. Systems security administration policies include: User ID/Group ID management, Password policies, password aging for Linux Users.
• Capacity planning of P Series machines with IBM Balanced Spread Sheets.
• Managed file permissions & ownership for important directories & files.
• Implemented DNS, NFS, NIS, Auto mount networking services.
• Created logical partitioning LPAR and dynamic logical partitioning DLPAR defining virtualization on IBM Pseries servers using HMC.

Environment: SuSe, Red hat, LVM, IBM RS/6000, IBM AIX, LDAP, IBM Pseries.

Confidential

Linux Administrator

Responsibilities:

• Responsible for migration, Configuration Management, Maintenance and Systems Development of RedhatLinux 3/4
• Administration responsibilities include user, group, disk, printer and security management, File sharing Permissions.
• Responsible for determining hardware and compatibility requirements for installation of application software and different tools.
• Analyzed problems on RPC, security& directory services of DCE/DFS. Fixed bugs using IPtrace tools, core dump analysis tools and memory leak tools.
• Opened Closed Change Management/control Tickets to update installation progress, and for upcoming changes in environment using Peregrine.
• Responsible for event processing, change management and problem determination in HACMP environment.
• Configured cascading, mutual takeover and rotating modes of operation of the HACMP and HACMP/ES products.
• Responsible for Setting up and configuring Netbackupserver/client and tape libraries.
• Involved in modifying and optimizing backup schedules.
• Responsible for troubleshooting and resolving missed and failed Netbackup backups
• Responsible for processing of tapes for offsite storage
• Responsible for updating Netbackup policies and procedures.
• On-call and system support providing problem determination and resolution for installed systems software base and data center p-series hardware

Environment: Redhat Linux ¾, DCE/DFS, Netbackup, HACMP/ES, Peregrine, HACMP, IPtrace tools.