SUMMARY:

• Over 9 years of specialized experience in UNIX Administration and Production Support of various systems on AIX 4.3/5.1/5.2/5.3/6.1, Linux RedHat and SUSE and Windows NT/2000/2003.
• Thorough understanding of fundamentals of AIX UNIX kernel and file system concepts.
• Experience in Installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation.
• Experience in Installing, upgrading and configuring SUN Solaris 2.6, 7, 8, 9 and 10 on Sun Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience in installation, configuration, tuning, security, backup, recovery and upgrades of IBM AIX.
• Experience in Installation and configuration on 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.
• 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
• Expertise in SMIT, LVM, Mirroring, Paging Space management, job scheduling, Performance monitoring, Error logging, Diagnostics, and Fine-tuning.
• 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.
• 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.
• Familiar with Tivoli Storage Manager TSM for backup automation with policies configuration for Web based databases, setup consisted of server and client backup with progressive backup methodology.
• Expert in configuring a TCP/IP network on AIX, creating mount points for Server directories and mount these directories on AIX servers.
• Resolved many Application Startup problems, PATH problems, and Name conflicts, TCP/IP, LAN /WAN, Sys logging and Networking Problems.
• Excellent in troubleshooting and Maintaining AIX and Patching.
• Experience with working in Production, Development and testing environment.
• Team player with excellent communication and inter-personal skills.

TECHNICAL SKILLS:

PROFESSIONAL EXPERIENCE:

Confidential

Lead AIX/Linux Administrator

Responsibilities:

• Worked with 100 IBM servers such as IBM RS/6000, p670, p5-570, p5-595 servers running AIX 4.3.3, 5.1, 5.2 and 5.3
• Setup and configured TCP/IP network on LINUX and AIX.
• Worked with implementation team of high availability cluster on IBM RS/6000 platform HACMP for AIX .
• Creating LPARS and configuration of DLPAR scripts for load sharing.
• Installed and configured network services such NFS, NIS and DNS Server.
• Adding physical volumes, creation Volume groups, File systems, Storage allocation, cron jobs, maintenance levels upgrades and applied Fixes for AIX 5.x.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager LVM commands.
• Worked in the migration team for migration from AIX 4.3.3, 5.1 to 5.2 and 5.3.
• Configured backup/archive policies using Tivoli Storage Manager.
• Modified Korn and Bourne shell scripts in order to automate administration tasks like customizing user environment and performance monitoring.
• Performed routine checks on nodes by monitoring syslogs and errorlogs for system and hardware errors.
• Setup cron jobs schedules for various backup and monitoring tasks.xsupported with enterprise backups using Veritas Nebackup version 4.5.
• Installed, configured and administered Websphere Application Server 4.x/5.0
• 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.
• Predefined and Customized Volume Group management on AIX.
• Disk Management on AIX using SMIT.
• Installation and Administration of Tivoli Directory Server.
• Disk Replacement Strategy on AIX.
• Performance Management Tuning of AIX /UNIX Kernel.
• Managing cron jobs, batch processing and job scheduling.
• Software installation and maintenance.
• Security, Disaster Recovery, users and groups administration.
• Networking service, performance, and resource monitoring.
• Familiar with IBM Enterprise Storage Server ESS .

Environment: Solaris 8/9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Korn Shell, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory , BEA Web logic servers,SAN Switches, Apache, Tomcat WebSphere, Weblogic application server.

Confidential

Senior UNIX/AIX Systems Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume managment on Suse servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring send mail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with project manager and auditing teams to implement PCI compliance.
• Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Configured/Maintained Zones, LDOM, ZFS filesystem Sun Solaris 10 Servers.
• Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager Solaris Volume Manager. File system Tuning and growing using VERITAS File System VxFS , coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Fine tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: Solaris 8,9,10, Red Hat Linux AS/EL 4.0, AIX 5.2, 5.3, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1, SVM.

Confidential

UNIX/AIX/Linux Systems Administrator

Responsibilities:

• Responsible for Installation, Configuration Management, Maintenance and Systems Development of AIX Systems.
• Installation, Administration and troubleshooting of AIX 5.3/5.2 running on IBM pSeries 570, 590, 595 and Standalone RS6000 Servers.
• Extensively worked and involved in capacity planning discussions.
• Used NMON tool for presenting all the important performance tuning information on one screen and dynamically updating it.
• Installed and Configured IBM WebSphere Application Server 7.0.X on AIX 5.3 and windows servers.
• Responsible for the operation, maintenance and integrity of a distributed, networked AIX based environment.
• Configured and supported Logical Partitions/Micro Partitions LPAR/DLPAR , via HMC Hardware Management Console .
• Installation configuration and testing of VIO Server with AIX 5.3 on client LPAR's on 550 and 570 models.
• Assembled and deployed EAR, JAR WAR files on Websphere Application Server and did performance monitoring.
• Assigned Data Collection Levels for the started and stopped resources such as JVM, EJB's, WLM, and Deployment Manager.
• Installed, configured, administered and supported Web Sphere Application Server 7.0/6.0/5.0.
• Maintenance of the WebSphere Application Servers on different UNIX AIX and SOLARIS and LINUX platforms and setting up the development and testing and staging environment for the ongoing application development.
• Debugging of the application problems in deployment time, runtime and in load test.
• Installed and maintained Energy IP, NMS, ORS applications on AIX 5.3 Smart Connect Project .
• Coordinated with Tivoli Access Manager and Tivoli Identity Manager team IDM and implemented Single Sign On MDMS application.
• Provided support to 1600 Aix servers.
• Installed VIO server Advanced POWER Virtualization on IBM P5 System. Assigned resources by making LPAR client of VIO server.
• Lead from the front in implementations including preparing implementation and back-out plans, organizing application owner meetings, educating them about the downtimes and implementation plans.
• Responsible for NIM installation, setting up NIM servers, clients, define the resources, Alternate Disk Migration with NIM.
• Installed AIX 5.3 on each client LPAR VIOC on the disks which were virtually assigned to Client LPARs.
• Upgraded server memory from 24GB to 48GB and allocated to all the LPARS as per client requirement.
• Worked with HDS, EMC and IBM SAN Storage.
• Responsible for testing application and fixing bugs in Linux VMware, including setting up/installing the backend Debian and SUSE Linux servers and performing the configuration.
• Advised on best practices and spearheaded an upgrade project from older linux distributions to CentOS/RHEL 5.
• Administered the UNIX System for clustered AIX Servers running HACMP and dynamic LPARs with fiber attached SAN storage.
• Responsible for setting up the development, system test, performance test and pre-production environments for the ongoing application development.
• Worked on troubleshooting Java applications using logs, traces.
• Installed fixpacks and interfixes by configuring properties file and running update Silent wizard.
• Performance tuning by configuring JVM arguments, JDBC connection pooling caching.
• Performance tuning by pointing the applications to the different available servers.
• Coordinated with Oracle DBA's for performance tuning of DB/Sys.
• Coordinated with Oracle DBA for problem resolution and recommendations.
• Worked closely with DBAs to install raid, disk areas for Oracle database instance installations, created Bourne shell database startup and shutdown scripts for UNIX servers. Wrote shell scripts for automated installations, to extract logs.

Environment: AIX, VIO, LPAR, Solaris, Linux, Windows 2000, Oracle 10G, TSM, IBM HTTP Server, IBM BladeCenter, Apache Web Server, WebSphere Application Server, Korn Script, SAN ESS Shark storage, NMON, Siebel.

Confidential

UNIX Administrator

Responsibilities:

• Installed RHEL 3.0/4.0 using kickstart and custom building the servers per SOW.
• Installed/configured EMC Storage with 0, 1 5 RAID configurations.
• Installed and maintained Security issues.
• Installed Veritas Volume Manager, VCS Cluster Server for failover and for mirroring and raid level configurations on EMC storage frames.
• Performed all System Administration tasks like cron jobs, installing packages, and patches.
• Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
• Configured and installed Automount and Jumpstart.
• Oracle Installation 8.1.5 on Solaris 2.6 Red Hat Linux Enterprise 3.
• Diagnosing hardware/software problems and provide solutions.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and AutoFs File systems.
• Troubleshooting system, network and user issues.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Supported back office systems environments.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Creation Maintenance of user accounts passwords profiles, home directories, initialization of files, groups' creation and management, setting file permissions, customizing shell environment setup for users.
• Additional responsibilities include schedule and administration of server backups, setup and administration of network and msmail accounts.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Maintaining production critical servers running Solaris UNIX, Linux supporting Oracle database and Web services. Providing 24x7 supports.
• Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
• Created LVMs on Linux servers.
• Writing Shell Scripts for managing day-to-day transactions for automation of routine tasks.

Environment: SUN Servers 6500, 4500, 420, Ultra 2 Servers , Solaris 2.6/2.7/8, Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.