SUMMARY

• Over 7 years of IT industry experience in System Administration and Production Support of various systems on Red Hat Linux AS 3.x/4.x /5.x/6.x, AIX 4.3/ 5.1/5.2/5.3/6.1, Sun Solaris 8,9,10 and Windows environment.
• Thorough understanding of fundamentals of Red Hat Linux, AIX kernel and file system concepts.
• Installing, configuring and administering SUN Solaris 8, 9 and 10 on Sun Servers, and working knowledge on Red Hat Linux AS 3.0 /4.0, IBM AIX 5.3, Windows 2000/2003, and SLES 10.
• Installed OS by using Jumpstart, Kickstart, NIM and Ignite methods
• Expertise in Volume management, Disk Management, software RAID solutions using Veritas Volume manager 3.5/,4.1 .File system Tuning and growing using Veritas File System (VxFS), planed, documented and supported high availability, data replication, business persistent, fail - over, fall-back Solutions using Veritas Cluster Server 4.0 in SAN environment
• Worked in heterogeneous environment. Installing, configuring and administration on Sun Solaris 2.6, 7, 8, 9, 10, Red Hat Linux 8, 9 and RH AS 2.1, RHEL 3.x, 4.x, 5.x, Suse Linux Enterprise Server (SLES) 10.x, HP-UX 11.00, 11i, Windows NT, 2000 and 2003 Servers
• Worked with Backup Team to Configure the Master and Client Backup servers Using VERITAS Net Back up 4.5/5.0
• Experienced with the installation and configuration on Apache 2.x, 1.3.x, 1.2, JBoss4.0.x Web Servers and, BEA WebLogic 8.x, 9.x servers.
• Worked with VMware ESX 2.x servers, and Virtual Infrastructure client to create virtual guests
• Performed Servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX, Virtual Center, VM tools.
• Configuring Kickstart Servers and booting the images using PXE in Red hat Linux(RHEL).
• Good experience and understanding of SAN (SAN arrays; HITACHI, EMC) technology including zoning, disk creation on various systems, maintaining and configuring various fiber switches and storages
• Experience in Installed and configured IBM System P p690/p650, p5-570, p5-550, p5-55A and p6-570, RS-6000 Servers.
• Experience in installation and configuration of Virtual I/O Server (VIOS) 1.1, 1.3, 1.5, 2.1.
• Experienced in AIX Migration Installation, Preservation Installation and Complete Overwrite Installation using CDROM and configuring NIM Server.
• Experience in installation of AIX in an LPAR environment pSeries.
• Experienced in Administration Concepts such as Virtualization and logical partitioning (LPAR) of CPU, HMC usage, Workload Manager, MPIO, Service Update Management Assistant (SUMA).
• Expertise in SMIT, LVM, Mirroring, User & System Resource management, Paging Space management, job scheduling.
• Configured HACMP 4.x/5.x to monitor, Disaster recovery, detect and react to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events.
• Experienced in Process administration (i.e. monitoring processes using PS utility, signaling a running process using KILL and KILLALL command, monitoring processes and system load using topas, vmstat, iostat, netstat, tprof, svmon, lvmstat, sar, nmon and uptime utilities, monitoring logs, scheduling processes using Cron utility).
• Automation of Jobs through Crontab.
• Implementation and Administration of DHCP, NFS and NIS on AIX.
• Experience in DNS, NIS, NFS, Send mail, ftp, remote access, security management, and system troubleshooting skills.
• Expert in setting up Ssh, SCP, sftp connectivity between UNIX hosts.
• Good understanding of error logging subsystem and Performance Monitoring tools like vmstat, iostat, netstat on AIX 5L.
• Experience working in NFS/NAS, Storage Area Networks (SAN), SSA disk storage environment.
• Expert in configuring a TCP/IP network on AIX, creating mount points for Server directories and mount these directories on AIX servers.

TECHNICAL SKILLS

Operation Systems: IBM AIX 4.3.3, 5.1, 5.2, 5.3 & 6.1, L5 AS/400 OS/2, IBM AIX p-Series servers (p590, p550, p520, p670, p630,p770), Linux (Red Hat 4.x, 5.x, SuSe 8/9/10/11) DB2, Solaris 8.9.10 VERITAS Net Backup server, Windows 2000/2003 server

Hardware: IBM P520, IBM P550, P560, P570, P575, IBM P670, IBM, P650, IBM p770 RS/, HMC - Hardware Management Console. M5000, HP DL 360,580 G4,G5 &G6,HP C7000 &6000 Blade Enclosure, IBM Blade centre and DELL PE 2600, PE1900, PE2800, PE2900, PV NX300

Application Server and Technologies: NIM, HACMP 4.3.1 & 4.4, HACMP/ES 4.5, HACMP 5.1 - 5.5, Apache Server 2.X,3.X Web Logic (8/9/10) Web sphere 4.0/5.0.6.0/7.0, Samba server. HACMP (4.5, 5.2), Linux, UNIX, LVM.

Databases/scripting: MSSQL 2000, DB2, Oracle, Shell and PERL scripting

Languages: Java, C, C++, UNIX Shell Programming, XHTML, JSP, ASP.

Storage Technologies &Networking Technologies: AIX Logical Volume Manager, NET APP, EMC,HITACHI, IBM SAN, EMC powerpath, Cisco Router, Cisco Catalyst Switch, TCP/IP, NIM, NFS, NIS, DNS.

Backup/Monitoring Tools: VERITAS Volume Manager, VERITAS Cluster Service(VCS),Service Guard, EMC Storage, RAID Technologies, Mksysb, Topas, svmon,sar,Nmon etc

PROFESSIONAL EXPERIENCE

Confidential - IL

Unix/Linux System Admin

Responsibilities:

• Responsible for installation, troubleshooting and maintenance of Redhat Linux 5.x/6.x, & AIX 5.1/5.2/5.3/6.1 servers.
• Configuration and administration of Redhat Cluster and HACMP cluster resources, cascading, rotating and concurrent resource groups, event handler testing using clstat, clverify.
• Installation and configured Red hat 4.x, 5.x on Dell Power Edge Blade servers using Kickstart with PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations
• Migration of applications from Linux 4.x to 5.x and resolving any dependency issues after live upgrade
• Activities include user administration; startup and shutdown scripts; crontabs, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux and AIX systems
• Experience with Virtual Memory and swap space on Solaris systems.
• File system tuning using Veritas File System (VxFS).
• Planned, documented and supported high availability, data replication,fail-over and fall-back Solutions using Veritas Cluster Server 5.0, 5.1 in SAN environment.
• Worked with Backup Team to Configure the Master and Client Backup servers Using Veritas Net Back up.
• Verify and Synchronize the HACMP cluster, configured HACMP to monitor.
• Adding, increasing the file system space in HACMP environment.
• Administration ofp7-770,p6-670 p5-570, p5-550, p4-670 and IBM RS/6000 servers running on AIX 5L & aix6L for support of SAP Environment on Oracle 10g, DNS, FTP .
• VIO server Planning and Configuration.
• Responsible for the operation, maintenance and integrity of a distributed, networked AIX based environment
• AIX System Dump Generation and sending System Dump to AIX System Support Center.
• AIX System Administration using SMIT.
• Implementation of VMware Infrastructure 3 for Linux Red hat 5.0 with VMware ESX 3.5, Virtual Center 2.5 and administered the VMs with VI client.
• Setup and configured network TCP/IP on LINUX and AIX servers including RPC.
• Experienced in installation and configuration of HACMP.
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.
• Logical Volume Management (LVM) of AIX.
• Installed, configured and administered Websphere Application Server 4.x/5.0
• Disk Management on AIX using SMIT.
• Installation and Administration of Tivoli Directory Server
• Performance Management & Tuning of AIX /UNIX Kernel.
• Managing Cron jobs, batch processing and job scheduling.
• Responsible for configuring VLANs on IBM p Series, Nortel Switches, CISCO switches.
• Install and configure SSH to enable secure access to the servers.
• Supported web services (Apache) and J2EE application server software (JBoss, Tomcat, WebLogic) and messaging applications Websphere (WMQ), WebSphere message broker (WMB), and WebSphere Transformation Extender(WTX).

Environment: Red Hat Linux 4.x,5.x,6.x, AIX, 6.1 7.1, VIOS, HACMP Windows 2000, Oracle 8i, DB2, IBM HTTP Server, IBM BladeCenter, Apache Web Server, LDAP, Web Sphere Application Server

Confidential - IL

Unix/Linux System Administrator

Responsibilities:

• Installing, configuring, maintaining and enhancing operating system, Testing and system support software/hardware (AIX 5.1-5.3, TSM, HACMP4.5, LPAR, DLPAR, IBM pSeries 550, 570, RS/6000)
• Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux
• Decommissioning of old Linux servers
• Implemented VERITAS Cluster 5.0 for Web Sphere and Sun JES Web Server agents
• Performed application installation and management on Solaris and Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
• Modified the Linux kernel to add tracing probes for Config access tool.
• Experience in Shell scripting (ksh, bash) to automate system administration jobs
• Administration and support of Unix Servers including IBM AIX, HP-UX, Red Hat Linux and CentOS.
• Responsible for Implementing Cloning, Clustering, Performance tuning and trouble shooting of IBM WebSphere Application Server 4.0/5.0.
• Involved in Building up of servers from the scratch and testing the same.
• Extensive experience creating LPAR DLPAR using HMC.
• Configured HACMP clusters for database on P570 and regularly contacting IBM to solve critical HACMP related issues.
• Administered the UNIX System for clustered AIX Servers running HACMP and dynamic LPARs with fiber attached SAN storage.
• Extensively involved in Backup & Restores.
• Third party software installation and upgrades, scheduled system health checks, S.A. procedure documentation, New system planning, Customer support, System related problem determination and resolution.
• Printer Configuration
• NFS installation and configuration, IS installation and configuration
• Performing Preventive Maintenance regularly, Troubleshooting Day to Day problems
• HACMP Maintenance
• Providing Technical Support to other Departments
• System Performance Monitoring and Tuning

Environment: Red Hat Linux 5.x/4.x, IBM pSeries 550, 570, RS6000, HACMP, WINDOWS 98, WINDOWS NT, AIX4.2.1, HP-UX 10.02, Solaris 8/9, Red Hat

Confidential - Cordova, CA

Unix/Linux System Admin

Responsibilities:

• Worked as an Redhat Linux and AIX Admin/Oracle DBA for the State of Texas’s as a Team for various agencies on AIX, Sun Solaris, and Linux
• Provided 24X7 support for Redhat Linux servers running on HP X86 HW.
• Day-to-Day trouble shooting for the end users on AIX 5.3 based applications
• Successfully installed and configured AIX 5.3 on p550,570,595
• Decommissioning of old AIX, Linux servers
• Successfully reclaimed storage by reducing the size of the file systems which were not in use and hence saving a lot of money for the company
• Upgraded the firmware of the managed systems p550 and 595s
• Configuring and administration of NIM server and NIM clients
• Installation of Oracle 10g software, client and database on AIX.
• Upgrade Oracle 9i to Oracle 10g.
• Creating Database Users, Privileges and tablepaces.
• Used Export and Import utility for importing data from 9i to 10g.
• Database and System monitoring using database control and grid control.
• Communicate and worked with the customer (for the state of Texas) to resolve database issues
• Refresh schema level and full level production to non-production databases.
• Apply patches or upgrades to the database as needed.
• Created 3 production physical standby databases and 9 non-production physical standby databases.
• Successfully configured multiple standby databases for a production database. (standby from standby)
• Worked with Real Application Cluster (RAC) databases.
• Used SRVCTL utility for managing multiple instances and nodes.

Environment: AIX, Solaris, Linux, Windows 2000, Oracle 10g, DB2, IBM HTTP Server, Apache Web Server, LDAP, Web Sphere Application Server, Hummingbird Connectivity, Ab Initio 2.13, Pvcs, Tivoli Maestro.

Confidential 

Unix/AIX Administrator 

Responsibilities:

• Installation and maintenance of AIX Systems.
• Administration of AIX Operating Systems.
• System & backup management using IBM ADSM Backup Server.
• IBM RS/6000 SP System Software Maintenance AIX System Dump Generation and sending System Dump to AIX System Support Center.
• Installation/administration of AIX, Linux, Solaris, and NT/2000 Servers on a LAN, setting up optimal RAID levels (fault tolerance) for protected data storage in NAS environments. Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers.
• Defined and setup network printers, and install client/server applications. Define/setup network protocols, Network File Services (NFS), and Network Information Services (NIS).
• Setup and administered training room / Mentored students during training
• AIX systems administration and Disk Management using SMIT.
• Logical Volume Management (LVM) of AIX.
• Predefined and Customized Volume Group management on AIX
• Installation and Administration of TIVOLI Service Desk.
• Disk Replacement Strategy on AIX.
• Performance Management & Tuning of AIX UNIX Kernel.
• Managing cron jobs, batch processing and job scheduling.
• Software installation and maintenance.
• Installation and administration of peripherals.
• Security, users and groups administration.
• Networking service, performance, and resource monitoring
• Daily backup and restore operations.
• Set-up and administration of DNS server.
• Completed a full migration of UNIX Server (Solaris), including all network services, applications from NT 4 to Windows 2000 platform.
• Installation/setup of client/server MMS Applications. Create RDBMS backend with Oracle8 Database and MS SQL Server for the University at telecommunication sites throughout the US.
• Review Design Documentation confirming to Software Requirements
• Systems administrator providing support for production and development systems. Environment consisted of multiple IBM RS/6000’s (SP, R-series) and X-Window terminals
• Used perl v5 for systems tasks as well as C and Korn shell scripting.
• Design and implemented SMIT configuration screens.
• Other standard system administration tasks performed, such as system monitoring, performance usage, network support, and user support.

Environment: 150 IBM p-Series servers, AIX 4.3-5.3, Solaris 8 Hp-Ux, Windows 2000/20003. TSM5.3 and Legato Networker 7.3 for Enterprise Backup. Oracle9/10, Sybase and Informix. .