Professional Summary:

• Over 7 years of experience in UNIX systems administration and application support. Proficient in Red-hat Linux. Also worked and supported on sun Solaris 9/10, IBM-AIX, and Multi-server environments.
• Involved in installation, configuration, upgrading, patching and administration of RHEL 4.0/5.0 Servers.
• Experienced in configuring Kickstart and Jumpstartservers to initiate installation of Red Hat Linux andSolaris on several machines at once.
• Comprehensive Knowledge of Linux kernel tuning, patching and extensive knowledge of Linux system imaging/mirroring using System Imager.
• Highly experienced with UNIX Administration, EMC Storage Administration, Enterprise Hardware Troubleshooting and Capacity Planning. Involved in complete Administration tasks on UNIX (SUN Solaris,Red Hat Linux) and documentation for the projects executed.
• Expertise in Linux Enterprise using HP Blade Servers and Virtual Connect Technology.
• Performance Monitoring, resolving network issues & Tuningthe systemusingtools such as top, iostat , vmstat, netstat, nfsstat, truss, sar, ndd, ithtool, Dtrace, Strace.
• Expertise in Red Hat Satellite Server installation, Red Hat Linux Kick start, System Imager, SUSE Autoyast and Jumpstart in Solaris.
• Experience in installation, configuration and maintenance of VERITAS Cluster Server, Sun Cluster and HP Service Guard for failover and redundancy purpose.
• Experienced in Logical Volume Management on Linux with LVM Knowledgeable in HTTP, HTTPS, SMTP, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN, POP3 protocols.
• Experience in writing Shell scripts using ksh, bash, perl, for process automation of databases, applications, backup and scheduling.
• Expert in setting up SSH, SCP, SFTP connectivity between UNIX hosts.
• Experienced in DNS, NIS, NFS, FTP, NIS, Samba Server, LDAP, remote access, security management, and system troubleshooting skills.
• Experience in virtualizing Operating System services using Solaris Zones and Containers, configuring and maintaining global and local zones.
• Experience in using VERITAS Volume manager. Creating new file systems, mounting file systems and un mounting file systems, Hands on experience in Tivoli Storage Manager (TSM).
• Proficient in Installing, Configuration, Troubleshooting Computers, Software, Routers, Switches, Modems, Data Circuits and other Data communication Equipment.
• Experienced with Unix Administration EMC SAN Administration, NetApp, & NAS administration.
• Proficient with user account maintenance, backup & recovery, Auto-mounting, License Management and Printer configuration.
• Have very good experience working with Change Management for scheduling changes on Production and UA server using BMC Remedy Ticketing System.
• Have been and willing to work in flexible hours for production and Backup support.
• Experience supporting 7x24 production computing environments, experience in providing on-call and weekend support.

Education

Bachelor of Engineering.

Certification

Technical Skills

Operating Systems

Solaris 9/10, LINUX 5/4, IBM-AIX 5.3, Windows 2003/XP

Sun Fire Servers

E25k,E15k,12k, E280R, E480R, V240,420R, V440, V480, V490, V880,V890 and 4800

Data Centre Servers

E250, E450, E3000 and E3500

Disk arrays

Sun StorEdge 3130, A1000/D1000, EMC DMX 800 and 1000

Tape Libraries

Sun StorEdge L20/L40/L60, L180 and Storagetek’s 9840 A/B/C Fibrechannel

Languages

C, C++, java, javascript, Asp.net, HTML, XHTML

Databases

Oracle 10g/9/8, SyBase, MySql, Sql Server

Networking

TCP/IP, DNS, DHCP. NFS, NIS, SSH, BIND.

Storage

Sun Cluster 3.2, VERITAS Netback up 6.0, VERITAS Storage Foundation Suite, Solaris Volume Manager, send mail.

Professional Experience:

Client: Confidential,Waltham, MA (May 11 Present)
Title: Senior Solaris/Linux Administrator

Responsibilities:

• Involved in Installing, Configuring and Upgrading of Red Hat Linux AS 4/5, Solaris 9/10 operating systems.
• Responsible for installation, configuration and administration of RHEL 4, Sun Solaris 9/10 and SLES 9.
• Installed and configured JBoss application server on various Linux servers.
• Configured Kickstart for RHEL (4, and 5), Jumpstart for Solaris and NIM for AIX to perform image installation through network.
• Involved in configuration and troubleshooting of multipathing Solaris and bonding on Linux Servers.
• Installed/Configured/Maintained/Administrated the network servers DNS, NIS, NFS, SENDMAIL and application servers Apache, Websphere, Jboss, Webogic, Oracle E-business suite and Samba on Linux.
• Involved in installation and configuration of Linux / UNIX Servers and Work Stations distributions include Red Hat.
• Implemented cross platform SAN being accessed via Samba and Linux for workstations and server environments
• Administered and supported all distributions of Linux, including Linux Enterprise Desktop, SUSE Linux Enterprise Server, and Red Hat.
• Worked with RedHat Linux tools like RPM to install packages and patches for RedHat Linux server and Vir-Install, Vir-manager to install and manage the Virtualized OS.
• Administered Linux servers for several functions including managing WebSphere, Apace/Tomcat server, mail server, MySQL database, SVN, ClearCase, build and firewalls in both development and production.
• Provided support for Linux virtual machines in z/VM LPARs running on z/System hardware.
• Used VERITAS VOLUME MANAGER to create disk groups, volumes, volume groups, and RAID’s.
• Implemented Virtualization using VMware ESX Server in Linux on HP-460C Blade, Dell-2950.
• Created Korn shell scripts to monitor system resources and system maintenance and Performed administrative tasks such as System start-up/shutdown, and Backup strategy and scheduled cron jobs for job automation.
• Developed scripts for automating administration tasks like customizing user environment, and performance monitoring and tuning with nfsstat, netstat, iostat, vmstat.
• Performed network and system troubleshooting using truss, pstack, top, trace, lsps, ndd, ithtool, lsattr, xmperf.
• Wrote and modified shell scripts (tk, Perl, ksh) to perform automated administration tasks.
• Worked extensively on VxVM, LVM, Solaris Logical Volume Manager and VERITAS CLUSTER.
• Used Veritas Cluster Server (VCS 5.5) to verify Failover/Pre-Failback/Failback incase of outage in the high environment.
• Worked with Oracle team to install and restore oracle 10g instances and built the Oracle RAC in production and test environments.
• Extensively worked with Remedy ticketing system and provided 24/7 on call support for production.
• Used VERITAS Netbackup tool for backup and recovery.
• Responsible for DNS and Configured DNS Servers and Clients, troubleshooting system and DNS issues.
• Monitored system performance using sar, prof, vmstat, iostat, netstat, svmon, filemon, and netpmon.
• Troubleshooting and analysis of hardware and software failures for various UNIX servers (core dump and log file analysis).
• Configured and administered TCP/IP, LPAR/DLPAR, NFS and VIO servers and Worked with LDAP in order to resolve user management issues.
• Co-ordinated with web team in installation, configuration and troubleshoot issues with WebSphere Application Server on Linux.
• Installed, configured CISCO routers & switches and the Cisco IOS & heartbeats for Oracle RAC.
• Extensively worked with the LAN/WAN, firewalls and routing for Internet and Intranet connectivity using different protocols like TCP/IP, UDP, DHCP , HTTP/s, FTP, SMTP,SOAP & SSH.
• Maintained/Administrated the current storage environments (SAN, NAS, DAS, etc) as well as make recommendation for optimal solutions to support business initiatives.
• Responsible for configuring and implementing a “data recovery” solution utilizing EMC’s SRDF/Timefinder.
• Wrote UNIX Shell, K-shell, Perl, bash and python scripts to perform admin tasks.
• Extensively worked with Remedy ticketing system and provided 24/7 on call support for production.

Environment: Linux 5/4, Sun Solaris 10/9/, Oracle 10g, SUN Servers, SUN Fires, Linux, HP open view service desk (OVSD), Kickstart, Jump Start, Fujitsu Prime power servers, Samba, AutoSys, VERITAS Volume Manager (VVM), LDAP, EMC Storage SAN, VERITAS Cluster Server (VCS), VxVM, VMware servers, WebLogic, Jboss and Apache.

Client: Confidential,Whitehouse station, NJ (Sept 09 Apr 11)
Title: Senior system Administrator

Responsibilities:

• Administered servers in heterogeneous environments, which include Linux, Solaris and AIX operating environments.
• Responsible for image installation/configuration procedure, Kickstart for Red Hat Linux, Jumpstart for Solaris on x86 architecture.
• Managed and implemented changes, upgrades, security procedures and policies to the Linux.
• Involved in the yearly maintenance patching for both SAN and NAS connected Linux servers.
• Coordinated work with developers and database administrators to deploy and monitor HA environment applications utilizing VERITAS Cluster Services and Linux Cluster.
• Designed/Developed/Implemented/Scheduled the backup using VERITAS Netbackup 6.5 and Disaster- Recovery strategies for all UNIX servers.
• Performed deployment activities, environment support including installation, configuration diagnostics, planning and upgrades for Jboss Application server.
• Installed Weblogic Servers, configured its domains, maintained the server to produce and gather garbage collector logs.
• Planned/installed/maintained clustered environments for distributed applications using VERITAS Cluster, Sun Cluster and Linux Cluster.
• Worked as a senior Netbackup & Backup Exec engineer supporting more than 250 sites.
• Did server Virtualization using Solaris Containers (zones) and VMWare.
• Upgraded Netbackup 5.1MP5 to 6.5.2 on Solaris and HP Master and Media Servers. Added and removed pc desktop and laptop requests in Netbackup Professional Created profiles type naming convention, schedules. Implemented Netbackup Encryption on the media servers
• Trouble Shooting various problems and failures in VERITAS Netbackup and root-cause analysis of Netbackup. Implemented Vaulting process.
• Develop and maintain configuration manuals, procedure manuals and standards for WebLogic and JBoss application servers.
• Designed and integrated centralized SAN solution, increasing application speed and decreasing production database refresh times.
• Used RPMs to install, update, verify, query and erase packages from Linux Servers.
• Installed/configured SGE, PBS for RedHat Linux to submit, monitor and control a load of batch Jobs on network servers.
• Installed/configured z/VM mainframe LPAR to prevent memory from being wasted and to help in test/dev environments.
• Developed automated scripts/system monitoring tools/ testing tools using UNIX shell and Perl Scripting.
• Mirrored existing logical volumes & created volume groups, disk groups & set up the RAID (0, 1 and 5) using VERITAS volume manager.
• Migrated the existing UFS data to VxFS for best possible IO performance.
• Exclusively worked with RSA Keon UNIX Platform Security (UPS) v 4.5 security management systems for mixed UNIX environments. Worked with BMC Patrol, Powerpath for LINUX servers.
• Install, configure, and manage virtual machines using VmWare ESX 3.5, Xen Virtualization (vir-install & vir-manager).
• Installed and configured Oracle 10g and MySql multi partition non-RAC installation running on a single E10K with Veritas Volume Manager.
• Design/planning/implementation of clustering/Load balancing solution utilizing F5 Network BIGIPs.
• Wrote Ksh, Bash, Perl Shell Scripting to automate system administration tasks using Performed routine monitoring of systems for availability, performance and capacity planning. Reported on key metrics governing the operation of all systems

Environment: Linux 5/4/3, Solaris 10/9/8, Solaris x86, SUSE, Sun Cluster 3.2, Windows 2003, Clariion CX200, Perl, WebLogic 8.1, Shell Scripting, Bash, VERITAS Volume Manager (VVM),VMWare ESX-3.5, BigIP, LDAP, Oracle 10g, IBM SVC, HP open view data protector, SAN storage, Perl, Shell Scripting, Remedy, VERITAS Cluster Server (VCS), VERITAS Netbackup 6.0, Oracle RAC, WebSphere 5x, JBoss 4.2/4.0.

Client: Confidential, NY (June 08 Sept 09)
Title: Solaris/Linux Administrator

Responsibilities:

• Configured NFS Servers, NIS+ Servers, NIS+ Clients, Diskless clients and Auto clients and auto mounted the filesystems using direct and indirect maps. Also setup entries in /etc/dfs/dfstab in Solaris share file systems and mounted the disks onto the client systems.
• Configured Winbind on all Linux workstations which enables all the Linux users to be authenticated on Microsoft Windows 2000 Active Directory Server.
• Involved in daily Linux troubleshooting related to issues with LDAP, Apache and DNS.
• Involved in supporting UNIX/Linux servers running on Oracle and MySQL databases.
• Experience in building the various servers which includes M5000, T2000, T5220 & T5240 on Solaris Platform.
• Checked for revisions and version control using Clear Case.
• Configured and maintained Windows 2000 Server that runs DNS, DHCP and active directory services.
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users,Monitored System processes & system status; identifying system bottlenecks.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Managed Systems and Network related issues like Installation, Configuration and Troubleshooting on UNIX and Solaris platform
• Testing and upgrading production, development and test Linux and Solaris servers.
• Created disk groups volumes, and volume groups and configured RAIDs using VERITAS Volume Manager.
• Developed manual and write technical documents for NAS and SAN.
• Played a key role to segment and effectively secured infrastructure (Frame Relay and Point-to-Point T1) circuits and satellite (VSAT) WAN communication mediums and security appliances (i.e., Cisco PIX and Astaro firewalls).
• Installed and maintained security using Dtrace, Tripwire, Nmap, SSL, sftp, Ssh for SUN & Linux servers.
• Troubleshoot various problems on different environments such as development, QA, Staging and Production by analyzing log files.
• Performed daily housekeeping functions, such as establishing new accounts, creating and resetting passwords, developing scripts, performing system backups and recovery, and installing software patches and updates.
• Performed deployment activities, environment support including installation, configuration diagnostics, planning and upgrades for Jboss Application server.
• Used WILY Performance tools for monitoring and tuning the servers on different environments.
• Wrote and modified UNIX shell scripts (Perl, C, ksh) & corn to perform automated administration task.
• Managed data center backup and recovery operations utilizing StorageTek tape libraries and Legato Networker software.
• Key participant in implementation and integration of three new data centers including physical, logical and application level testing and support.
• Liaised with DBA team for Oracle/Sybase database installation, restoration, performance issues, network related issues on Unix Servers and with vendors for hardware related issues.

Environment:Red Hat Linux 4, Sun Solaris 10/9, Intel servers, Perl and Shell Scripting, Sun Ultra Enterprise 4500, Sun Enterprise 450, Sun Enterprise 420R, Sun Enterprise 250, Sun Fire V20z servers, Dell PCs & Compaq PCs, VERITAS Volume Manager, VERITAS Netbackup 5.0, Sybase 11.5.1, Perl Scripting, Apache.

Client: Confidential,Baltimore, MD (Oct 06 June 08)
Title: Solaris/Linux Administrator

Responsibilities:

• Formatting raw disks and partitioned them using the format utility, installing Solaris operating system, creating file system, devices and special files using newfs.
• Used fsck and fsdb on file systems successfully when critical data got corrupted. Made use of alternate superblocks to replace corrupted superblock.
• Configure and maintain Windows 2000 Server that runs DNS, DHCP and active directory services.
• Configure Winbind on all Linux workstations which enables all the Linux users to be authenticated on Microsoft Windows 2000 Active Directory Server
• Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users, Monitored System processes & system status, identifying system bottlenecks.
• Joined multiple disks to overcome disk size limitations, mirrored data for fault tolerance. Spread data over multiple disks for performance enhancement.
• Responsible for Day to Day Backup and Recovery using tar
• Managed Systems and Network related issues like Installation, Configuration and Troubleshooting on UNIX and Solaris platform
• Using MsBackup, VERITAS Volume Manager for Backup and Restore from SCSI Hard Drives on CLARiiON CX200 and Tape Drives using various policies like daily, incremental and differential backup.

Environment:Solaris 2.8, Redhat Linux 3 ,JumpStart, Automount, Samba, Apache, Tomcat, Netscape Planet Web Server, Java/Shell/Perl programming, Solstice DiskSuite, NIS/NFS, DNS, FTP, Win NT and 2000 Server, Solaris V240/440 hardware, Vignette.