PROFESSIONAL SUMMARY:

• 7 years of experience as a Systems and Network Administrator in Linux/Unix environments, with hands - on experience on RHEL 4/5/6/7, Sun Solaris 8,9,10, Windows and AIX.
• Experienced in OS installation and configuration of RHEL 7.x/6.x/5.x/4 and Solaris 9,10.
• Hands on experience in building servers and automating the provision of OS by using Kickstart for RedHat and Jumpstart for Solaris.
• Experienced in OS installation and configuration of Solaris 8,9,10 and RHEL 6.x/5.x/4, SUSE 11.x/10.x.
• Experienced in Server builds and automating the provision of OS by using Jumpstart for Solaris and Kickstart for RedHat.
• Experienced in installation of Packages and Patches in Linux/Unix using RedHat Satellite Server.
• Experienced in installation and configuration of Volume Management and file system through Veritas Volume Manager (VxVM) and Logical Volume Manager (LVM) in Linux.
• Hands on experience on creating and managing all types of file systems such as XFS, ZFS, Ext3, Ext4, UFS.
• Experienced in configuring Raid-0, Raid-1, Raid-5 for data redundancy using Veritas Volume Manager and SVM on multi-OS platform.
• Experienced in configuration of DNS, LDAP, NFS, DHCP Server, Samba, and TCP/IP.
• Experienced in Process automation and system Monitoring using Shell Scripts.
• Hands on experience in Storage Area Network (SAN).
• Experienced in system performance and monitoring tools like Nagios, GNOME, Cacti etc.
• Designed and implemented backup procedures using Veritas Netbackup.
• Expertise in installation, configuration and support of JBOSS, Apache Web server, LDAP and mail server.
• Hands on experience on Amazon cloud computing using Amazon Web Services (AWS).
• Experienced in installation, configuration, and support of Websphere, Tomcat, Apache Web server, LDAP, mail server and JBOSS.
• Hands on experience in installation and configuration of Puppet on various servers.
• Extensive knowledge in Microsoft Windows HPC pack 2008 R2.
• Experienced in configuring Bonding in Linux and IP MultiPathing (IPMP) in Solaris.
• Experienced in configuration and maintenance of virtual server environment using VMWARE ESX, VSphere, and Solaris 10 zone.
• Sound communication with an ability to lead a team and motivate them to achieve desired objectives.
• Proven strength in troubleshooting, coordination and problem solving.

TECHNICAL SUMMARY:

Operating Systems: Sun Solaris v 9, 10, HP-UX v 10.2, 11.31, IBM AIX v 5.x, 6.x, Redhat EL v 4.x, 5.x, 6.x,7.x, SUSE v9, 10.0, 11.x, Ubuntu v 6.10, 9.10, Win NT/98/XP/Vista/7

Hardware: Sun Enterprise 250,450,3500,4500, 280R, V480, SunFire 4800, SunFire 6800, Sun Fire Starcat E15K Servers, M5000, T2000, T5240, x4100, x4250, x4440,DELL PowerEdge 1650, 6400, M905 with 1000e enclosures, HP Proliant DL 380, 385, 580, 585, HP Net Server L series, Micron, rp3440, rp4440, rp5470, rx3600, Acer Intel Servers, DLT, AIT, Ethernet Hubs, Repeaters, Routers, LAN Testers, Cable Modems, Terminal Servers & Print Servers, DLT/DDS drives, Sun A5000, 5200, D1000, 3510.

Server Management: SUN Solstice Disk & Admin Suites, VxVM, SMC, HP Open View, Network Node Manager, Compaq Insight Server Manager & Intel LAN Desk Manager, Nagios, BMC Patrol and Predict.

Languages: C, C++, XML, PHP, PL/SQL, Shell Scripting - ksh, Bash and csh, Perl, Python

Data Base Servers: Oracle 8i, 9.2.x on Solaris and Red Hat Linux and Win NT/2000, MySQL 7, 2000 on Win NT/2000.

Networking Protocols: SNMP, SMTP, TCP/IP, IPX/SPX, NetBEUI, OSPF, BGP, IGRP, EIGRP, PPP, SLIP, UUCP, X.25, LAN, WAN, PCNFS, ARP/RARP, FTP/TFTP, RIP, DHCP, DNS, NIS, NIS+, Automounter.

Desktop Applications: Acrobat, Paint Shop Pro, MS Office, Novell Group Wise, Corel Perfect Office, MS Works, Open Office, Dreamweaver, FrontPage, and many others.

Internet & WWW: Apache Web Server 1.2, 1.3.x, 2.x on Windows, Linux and Solaris, IIS 4.0, 5.0, 6.0, iPlanet 6.x, WebLogic 6.x, 7.x, 8.x, 9, 10, JBoss 4.2.x, Sendmail, Postfix, Mozilla, Webmin

Security: Checkpoint 2000 VPN-1/Firewall -1, Cisco PIX version 5.1, 6.2, iptables 4, iptables 6.

PROFESSIONAL EXPERIENCE:

Confidential, Old Bridge, NJ

LINUX/ UNIX Administrator

Responsibilities:

• Installing and upgrading Redhat and Solaris on Sun SPARC, HP DL 380 G4,5,6 and 7 & Dell Power Edge servers.
• Installing and upgrading Redhat Linux on HP x86 and Itanium Servers.
• Creating sparse root and whole root zones and administered the zones for Web, Application and Database servers and worked on SMF on Solaris 10.
• Implemented and administered VMware ESX 3.5, 4.x for running the Windows, Redhat Linux Servers on development and test servers.
• Implemented Jumpstart for Solaris and Kickstart for Redhat environments.
• Experience working with Solaris SVM, ZFS and Redhat LVM.
• Experience in NAS environment carrying Netapp filers and EMC Celerras.
• Experience managing SAN disks like EMC Clariions and VMAX using EMC Powerpath and Volume management softwares.
• Implemented HA using VERITAS Cluster Server 5.0 for Apache gent.
• Managing DNS, NIS servers and troubleshooting the servers.
• Worked with VERITAS Foundation Suite 5 and performed tasks like creating disk groups, volumes, initializing disks, replacing failed disks etc.
• Used Sun Volume Manager for Solaris and LVM on Linux to create volumes with layouts like RAID 1, 5, 10, 51.
• Re-compiling Linux kernel to remove services and applications that are not required.
• Performed performance analysis using tools like prstat, mpstat, iostat, sar, vmstat, truss, Dtrace.
• Upgraded Solaris and Redhat servers from RHEL 5.x to 6.x/7.x and Solaris 8,9 to Solaris 10.
• Worked on patch management tools like Yum, Repository and RHEL Satellite server and Sun Update Manager for Solaris servers.
• Patching of OS on mirrored servers after detaching and re-attaching the sub-mirrors.
• Implemented the monitoring tools like Nagios 3.0 to monitor services like CPU, Hard Drive, Memory, Users, http, ssh etc.
• Experience Installing and configuring Splunk to gather stats on the servers.
• Worked on day to day administration tasks and resolve tickets using Remedy.
• Used HP Service center and Remedy change management system for ticketing.
• Troubleshooting and performance tuning issues with applications like Oracle 10g, JBoss 4.x, WebLogic 10, MQSeries 6.x and the operating systems which included Solaris and RHEL.
• Worked on the administration of the Apache, JBoss 4.2.2 servers including installation and deployments.
• Worked on F5 load balancers to load balance and reverse proxy WebLogic Servers.
• Shell scripting to automate the regular tasks like removing core files, taking backups of important files, file transfers among servers.

Environment: HP Proliant servers HP BL460, Cisco UCS, VMware ESX sever 5.0, Red Hat Enterprise Linux 4.3/5.7/5.8, Chef, VERITAS netback up 6.5, Tripwire, Deep security.

Confidential, Webster, TX

Unix/ Solaris Administrator

Responsibilities:

• Installation, Upgrading and deployment of Red Hat Linux Operating system on X-86 based HP BL460, BL685 Hardware and on VMware ESX servers.
• Installed, configured and administered AIX 4.3.3, 5.1 & HACMP 5.1.
• Upgraded AIX 4.3.3 to AIX 5L v5.1, 5.2 & 5.3.
• Installed and configured VERITAS Storage Foundation Suite, VxVM, VxCS and Vxfs for Linux RHEL 5.X 64-bit Operating systems.
• Configured and performed troubleshooting Samba on Red Hat Linux Servers.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Configured and administered Lpar’s/DLpar’s.
• File system tuning, growing and shrinking with VERITAS File system 4.0/5.1 (Vxfs).
• Configuration of Kernel parameters as per application requirement.
• Associated with bank infrastructure management and BMC support team while deploying the Linux servers for cloud infrastructure.
• Associated with DBAs for installation of Oracle database and Sybase on Linux servers.
• Involved with Oracle DBAs for the installation, configuration and implementation of the Oracle RAC (Real Application Cluster) environment as per bank standards.
• Organizing DR (Disaster Recovery) server tests to make sure the infrastructure is correct and the DR servers are working as expected as in production servers.
• Worked with storage teams to split the R1 and R2 disk groups to enable the SAN disks to read/write mode on DR servers and worked with DBA’s and software system analyst to troubleshoot and testing the functionality of their applications o both Prod and DR servers.
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-series.
• Implementation of SSH for secure transfers and implementation of PKI between servers to enable password less logins between servers.
• Worked on DNS, NIS Master Slave Servers along with required clients.
• Worked on different backup methods for backing up the data when upgrading and migration of Operating system Backups: Tar, rsync, rsnapshot and rdiff. Package and patch administration on Linux and AIX servers.
• Implementation of High Availability using Veritas Cluster Server 5.0 and 5.1 using Oracle Agents.
• Involved in Design review meetings and co-ordinated with application team, BSOL and L&P.
• Worked on scripting using shell, bash and korn.

Environment: Red Hat Enterprise Linux 5.1, AIX 4.3, 5.x, HACMP 5.1, VERITAS Volume manager, Veritas File System, Veritas Cluster Server 5.1, VMware ESX sever 4.0, LPAR, DLPAR, HP Proliant servers BL460, BL685, IBM P550, P590, Enterprise scheduling Product, Tivoli Storage Manager

Confidential, Phoenix, AZ

Linux/Unix System Administrator

Responsibilities:

• Installed and configured servers using Red Hat Linux Kickstart method.
• Migration and configuration of Red Hat Linux 5.1 on Dell PowerEdge, HP Proliant
• Experience in Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX 4.0, VMware Vcenter.
• Configuration of NIS, NFS, AutoFS on Red Hat and AIX Servers.
• Pre-Install, configuration and installation of Oracle 10g on veritas cluster nodes.
• System and Network Administration, which include but is not limited to installing Red Hat Linux5.1, AIX5.2, NFS/NIS management and DNS Configuration.
• Installation and configuration of Logical Volume Manager, Veritas cluster Suite.
• Handled System tuning, log maintenance and disk space management.
• Wrote UNIX shell scripts for automated installations to extract logs using Bash, Perl, Ksh.
• Implementation on various Red Hat Linux and SAN related requirements of PMR users.
• Installed and configured J2EE Application servers on Linux environments.
• Installed fix packs to overcome Appserver problems and installed IBM HTTP Server.
• Initiated backups on Linux servers using Veritas Netbackup.
• Used unix native backups and restore using ufsdump, ufsrestore & tar commands.
• Remote Server (Linux) Administration for Disaster recovery site.
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed Linux servers for Applications to be deployed.
• Network Monitoring Using Nagios tool.
• Network trouble shooting using netstat, ifconfig and TCPDUMP.
• Installed application connectivity software to enable IBM print services. Configured and administered firewall rules to effectively monitor system files, port security and network traffic activity coming through the firewall.
• Experience in Installation and configuration of JBOSS on Red Hat Linux servers.
• Installed and configured Sudo for users to access the root privileges.
• Developed automated processes that run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.

Environment: DELL Poweredge 1650,2850,2950,6400, RHEL 5.x, 6.x, AIX 5.1/5.2/5.3, P550, P570, P575, VVM, VCS 5.1 and VERITAS netback up 4.5.5, VMware ESX sever 3.5, SAN switches, EMC Symmetrix, EMC connectrix, HP Network Node Manager, Web logic 8.1, Websphere, Korn, Bash, Perl.

Confidential, Dallas, Texas

UNIX System Administrator

Responsibilities:

• Administration and support of Linux servers (Red Hat Linux and CentOS) and Unix Servers including IBM AIX 5L.
• Upgraded Red Hat Linux 4.x to 5.x and AIX 5.1 to AIX 5L 5.2, 5.3
• Duties include user administration; scheduling jobs using crontabs, file system maintenance, scripting and automation.
• Built the servers from the scratch level i.e. loading OS, creating file systems and configuring network adapters and HBAs.
• Created and configured LPARS/DLAPRS on P550, P570.
• Performed installation, periodic maintenance updates and applied APAR fixes.
• Updating system firmware by using HMC, backing up and upgrading HMCs.
• Involved in maintaining high availability clustering environment using HACMP Cluster software.
• Configured IBM-z/VM 5.1 for test environments, used VMware ESX Server to build guest OS using cloning.
• Install and configure DHCP, DNS (BIND, MS), web (Apache), mail (SMTP, IMAP, POP3) and file servers on Linux servers.
• Configured backup/archive policies using backup utility and mksysb images of root volume group to meet data archiving requirements and disaster recovery readiness.
• Defined virtual SCSI, virtual Ethernet adapters and created VIO client adapters from HMC and mapped them.
• Lightweight Directory Access protocol(LDAP) setup for user authentication integrated with Postfix mail server, and Apache web server.
• Experience in Network Monitoring Application Software such as Nagios.
• Configured and performed troubleshooting Samba over Red Hat Linux Servers.
• Maintained availability, increased capacity & performance of production machines by upgrading their hardware & firmware.
• Associated with tasks involved in SAN migration project.
• Involved in discussions with design and platform engineering team.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.
• Worked in a fast-paced 24x7 production environment comprising Red Hat Linux and IBM servers.

Environment: Red Hat Linux 5.x/4.x, AIX 5.1/5.2/5.3, P550, P570, P575, HP-UX 11i, Oracle 9i, EMC SAN (Symmetric), NIM, NFS, HMC, HACMP, Apache, Samba, Nagios, LPAR, DHCP, SMTP, DNS, LVM, LDAP, Shell Programming (bash, ksh), DELL Poweredge 1650.

Confidential, Bellevue, WA

Systems Administrator

Responsibilities:

• Performance Tuning and Maintenance activities on Database Production systems.
• Installation of Red hat Linux 4.3 on Dell, Proliant and Enterprise Server 4.0.
• Problems and performance issues; deployed latest patches for Linux Application servers, Performed Red Hat Linux Kernel Tuning for TCP stack.
• Creating Jumpstart image for Solaris 9 and configuring new Linux servers.
• Responsible for successful migration of servers to different location.
• Used NIM to install AIX multiple clients at a different data centre over a network to support HP-UX administrators.
• Configured File Systems, users and group for Oracle and Websphere.
• Configured network adapters and Qlogic HBA BIOS settings.
• Configuration of Kernel parameters for Oracle Database.
• Ensured connectivity to Servers and Network Administration.
• Installed and setup CUPS, LPD, configured local and remote printers.
• Created Korn shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation
• Configured Workload Management (WLM) of Web Sphere Application Server and also in Performance Tuning using Resource Analyzer and Tivoli Performance Viewer.
• Set up WebSphere Global Security for access to the adminconsole.
• Installation, Configuration and Administration of High Availability Veritas Cluster Servers for failover and redundancy purpose and also used Veritas Volume Manager to enable easy online disk administration and configuration.
• Configured admin console security on WebSphere and creating users with various roles to access the WebSphere admin console - users and groups in LDAP and added them as WebSphere Console Groups.
• Used IPsec for controlling dataflow between pair of hosts.
• Implemented the workload Management (WLM) and Load Balancing.
• Created shell scripts to take backup Oracle database.
• Hardening and securing of all the Sun Solaris servers.
• Wrote shell scripts in automating admin tasks like customizing user environment, performance monitoring , system conditions , failovers and disk utilizations .
• Worked on Web servers;
• 4.x/3.x & Apache Server 2.x/1.x
• Automating the installs using Kickstart and building post install scripts using Shell scripting.
• Configured Network services such as NFS, NIS.
• Used Batch Processing to make the CPU perform Intensive tasks during night times and early mornings so that there is not much workload on the machine during normal hours.
• Monitored server and application performance & tuning via various stat commands (top, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, printmgr, hpimliview, dmidecode, smc ) and tuned I/O, memory
• Backup configuration using Veritas Netbackup and used Veritas volume manager.
• Monitor the systems using Tivoli.
• Applying new patches and packages on Linux.
• Used smitty (AIX) tool for Printers, Applications, Processes, Services, Software License Management, Software Installation, Users and Security Management.

Environment: Red hat Enterprise Linux 4.3, AIX 5.1/5.2, Solaris 9, Sun Fire V240, Sun Fire V480, Sun E15K, IBM RS/6000, Veritas Volume Manager, Solstice Disk Suite, Tivoli, WebSphere, Veritas Netbackup, Samba, Oracle 9i. HP Superdome, HP EVA 6000, HP RX servers, HP 9000 Model K 580.