SUMMARY

• Have 7 years of experience as System Administrator in Red Hat Enterprise Linux, SUSE Linux, Fedora, Ubuntu, CentOS, and IBM - AIX.
• Configured Volume groups, logical volumes and file systems on Linux
• Experience in installation, configuration, Troubleshooting and administration of AIX 5L, 6.1 and 7.1
• Good Experience in AIX Migration Installation, Preservation Installation and Complete Overwrite
• Installation using CDROM and Network Installation Manager NIM.
• Setting up and configuring NIM Server.
• Installed Web Sphere Application Servers on Linux and AIX.
• Managed Patches, Upgrades and Package Management for System software on various flavors of UNIX and Linux Servers.
• Expertise in configuring Kickstart and Jumpstart Installation Methods.
• Strong in LVM (Storage Methodology), Performance monitoring, Error logging, Diagnostics, Dumps and Fine-tuning.
• Good experience in Administration Concepts such as Virtualization and logical partitioning ( LPAR) of CPU, HMC usage, Workload Manager
• High Availability Setup, Setting up HACMP clusters, Designing and configuring Resource Groups, Event usage and customization.
• Experience Python, Perl, CGI, JQuery, JavaScript at the front end
• Administration, Monitoring and logging functions, User/Group administration, Usage scenarios of HACMP, Reduce planned downtime, Reduce unplanned downtime, Increase Maintenance availability.
• Experience in Perl and bash scripting to create reusable tools for testing faster approaches to preparing data for training acoustic and language models
• Writing shell and Perl scripts for System administration and updating them in the Scheduler / Cron.
• Experience in development in SYBASE stored procedures, ad-hoc queries, Unix/Linux shell.
• Experience in production support SYBASE, Shell.
• Experience in Embedded Firmware development and testing
• Implemented automation tools chef, puppet.
• Configuring VIO Servers (1.5, 2.1 and 2.2) with Link aggregation and Redundant VIO.
• Hands on experience in Red Hat Linux Performance Monitoring tools using vmstat, iostat, prstat, mpstat, sar & top.
• Experience in using Unix/Linux Utilities such as ls, rm, grep
• Installed, configured, maintained Tomcat and Apache Web Servers.
• Install and manage software and hardware RAID disks to improve fault tolerance and performance.
• Experienced in Installation of OS, packages, Configuring the Systems, adding peripherals, maintaining user accounting, System Security, setting up NFS, SAN, AUTOFS, regular backup/recovery, performance tuning, Troubleshooting at various levels etc.
• Experience in backup/recovery/archive & Hierarchical Management using Tivoli Storage Manager Backup utility and mksysb images of root volume group to meet data archiving requirements and disaster recovery readiness.
• Providing 24/7 technical support to Production and development environments.
• Experienced in setting up DNS and NIS.
• Expert in setting up SSH, SCP, SFTP connectivity between UNIX hosts.
• Experienced in creation of Agents, Resources and Groups and setting up of dependencies for different services in the clustering Environment.
• Strong in networking concepts, TCP/IP protocols, Routing and Subnetting.
• Good communication skills, working without supervision, working in team environment.

TECHNICAL SKILLS:

Operating Systems: Unix/Linux (Red Hat 4.x, 5.x, 6x, SUSE 8), IBM AIX 5.x/ 6.x/ 7.x, L5 AS/400 OS/2, IBM AIX pSeries servers (p590, p550, p520, p670 and p630), DB2, VERITAS Net Backup, Windows 2000/2003 server.

Hardware: IBM RS/6000, p670, p690, p650, p630, RS/6000 F50 pSeries SP2 Wide Node, HMC - Hardware Management Console 7310C03 (desk side model) and 7310CR2 (rack model)Networking TCP/IP, NIM, NFS, NIS, DHCP, DNS.

Storage: EMC Symmetric, Hitachi Arrays, Sun Storage D1000, A5000/5200, SAN, NAS

Application and System Management Servers: HACMP 4.3.1 & 4.4, HACMP/ES 4.5, HACMP 5.1 - 5.3Tivoli Storage Manager. AIX, LVM. VeritasDatabase and related libraries and tools Oracle 10i, SYBASE ASE 12.5, 15, JDBC,Oracle SQLDeveloper, SYBASE SQL-Advantage,ASE isql, FileZillaWebserver Apache Tomcat/http server, IIS, Jboss, IBM RSA/WAS, Web logic, Websphere

Languages: UNIX Shell Scripting, C/C++, Perl, Bash, Java, HTML, Python

PROFESSIONAL EXPERIENCE

Confidential, CA

System Administrator

Responsibilities:

• Installation and configuration of AIX, Solaris, Unix/Linux, Fedora, SUSE and Centos OS on new server builds as well as during the upgrade situations.
• Installation, configuration and administration on Veritas Cluster Server, Redhat Cluster & HP-MC Service Guard on various business critical databases and application production servers.
• Installation and troubleshooting of Redhat Linux (9, 8) and SUSE Linux.
• Successfully configured Kickstart in Linux.
• Configured NFS, NIS, NIS+, DNS, Disk Space Management and Sendmail of Sun Servers.
• Creating User accounts, Mail account, groups, configuring printers, and etc.
• Planning & creating volumes and Scheduling the job, making sure the recommended processes are taken care while volumes are created.
• Created Role Based Access Control (RBAC) for users.
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configured auto mounts/maps for the user accounts.
• Creation and Configuration of additional swap/tmp space dynamically as and when required.
• Creating new file system, managing & checking data consistency of the file system.
• Metadevices, applying RAID levels, mirroring the devices, and soft partitioning.
• Installed and configured Redhat satellite server for patch and package management.
• Installation of Packages and required Patches to the application.
• Setup, configuring and Backup management using Veritas Net Backup.
• Daily Monitoring of Net Backup activity and reporting to proactively avoid issues.
• Worked with database administration staff to ensure optimal performance of databases, and maintain development applications, databases, and ensure database backup completed successfully.
• Installed, configured, maintained Tomcat and Apache Web Servers.
• Embedded system development on ARM processors, in Linux and bare metal environments using C and C++
• Involved in Data Center migration, planning and consolidation of networks from client site to the central site.
• Support product system using Perl scripts and SYBASE database, developing SYBASE stored procedures
• Written shell/Python scripts to automate repetitive tasks
• Implemented Automation tools chef, puppet.
• Implementation of RAID techniques using Veritas Volume Manager and Logical Volume Manger.
• Written Bash and Perl Scripting for automation of jobs.
• Configured new service group & resources for new application in Veritas Cluster Server.
• Monitored System performance and did kernel tuning to enhance the system performance.
• Apply security Patches, updates using YUM.
• Creation, Re-size and deletion of Logical volumes using LVM.
• Set-up software raid on Linux servers using MDADM.
• Perform Kernel Parameters tuning to enhance performance of Linux servers.
• Troubleshooting of day to day system and user problems.

Confidential, Phoenix, AZ

System Administrator

Responsibilities:

• Installed, upgraded and configured RHEL 6.x/5.x/4.x and IBM AIX 7.x/6.x/5.x/4.x. This included Kickstart Installation, NIM Installation and CD media.
• Installed/Configured WebSphere and other Application Servers.
• Installed, configured and administration of Application Server 6.x, Network Deployment, MQ 5.x, 6.0, Jboss 4.x on Linux, AIX.
• Modified existing Linux file systems to a Standard EXT3 as well as migrating all Solaris Database files toZFSto increase system performance.
• Installed Fix packs on Application Server and added patches using Update installer.
• Installation and configuration of LVM & HACMP on various AIX Servers.
• Installation and configuration of Oracle RAC 11g on RedHat Linux cluster nodes.
• Worked with Oracle Database Administrators and reviewed the required maintenance tasks.
• Installed RPM packages on Linux Servers.
• Managed builds and Deployments, Created Ant Scripts to customize EAR, WAR and JAR files and the application is deployed on WebSphere server.
• Generated HTTP plug-in config and configured with web servers by doing manual edits.
• Configured and administrated LPARs.
• Management of Linux and AIX user accounts, groups, directories and file permissions.
• Configuration of DHCP Server on Linux to get the IP Addresses Dynamically.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail in RedHat Linux, IBM AIX and Solaris.
• Used Python, Perl,Bash, JavaScript and JSON at the front end
• Configuration and Maintenance of AutoFs in AIX and Linux.
• Configured SAMBA to get access of Linux shared resources from Windows.
• Day to day Linux and AIX hardware support, problem and change ticket implementations, composing scripts, OS builds & upgrades along with day-to-day Storage & UNIX Administration.
• Tested and implemented Root disk mirroring.
• Taking Backup and restoring the data using mksysb.
• Solaris Performance Monitoring and Tuning using iostat, vmstat and netstat.
• Configuration of Secured Shell (SSH) in both AIX and Linux servers.
• Implemented Automation tools chef, puppet.
• Automated routine jobs by developing cron, Perl, Bash, Python shell-scripts.
• Configuration and Administration of Apache Web Server and SSL.
• Creating and managing VM’s through Virtual Centre and VI client.
• Scripting for automating changes during move to speed up process.
• Responsible for Monitoring and fine tuning system and network performance for Linux systems.
• Reviewed Web Server, Application Server Performance Monitoring data using Tivoli Performance Viewer and reviewed historical Tivoli logs for root cause analysis, recurring events and involved in troubleshooting the recurring problems.
• System Backup using tar, cpio for local systems and Veritas NetBackup for enterprise wide backup and recovery
• Administrating support of remote Pearson SYBASE ASA 9.1 server, UNIX/Linux application support
• Documenting each step and testing procedures before the migration.
• Take full gathering of data and ensure everything planned and documented so other team members can use it during their support hours.
• Provided 24/7 on call support on UNIX Production Servers. Responsible for maintaining UNIX security on Redhat Linux and IBM AIX.

Confidential, NYC, NY

Unix/Linux Administrator

Responsibilities:

• Installation, Upgradation and configuration of UNIX, Red Hat Linux and IBM AIX OS IBM Blade servers and P-Series Servers using Kickstart, NIM and CD media.
• Responsible for installation, configuration, support and performance monitoring of high profile applications running on IBM WebSphere Application Servers, WebSphere Process Server and integrate with different Web Servers and configuration of web apps
• Upgraded WebSphere ND 6.0 and 6.1 with refresh packs and fix packs. Migrated all the applications on WebSphere 5.1.1.12 to 6.0.2.9 and to 6.1.0.9
• Implemented the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Installing and configuration and maintenance of Veritas Net Backup 6.0/5.x.
• Worked on HACMP clusters in SAN environment (EMC).
• Creation of Logical volumes (LVM) for Red Hat Linux and IBM AIX operating systems.
• Installation and customization of Window 2003 servers.
• Configuration and Administration of NFS, NIS, NIS+, LDAP, DNS, Samba and Sendmail Servers.
• Working knowledge of VMware (Virtualization).
• Upgrading VMware server 2.x to 3.x.
• Installed RPM packages and LPP on Linux Servers and IBM P-Series AIX Servers.
• Oracle installation & system level support to clients.
• Experience with Python development under Linux OS
• Installed and configured the iPlanet (Sun One) Web servers & setup firewall filtering with Squid Proxy server for web caching on Sun Solaris.
• Written shell scripts to automate the administrative tasks using cron and at in AIX and Linux.
• Validated monitored and Analyzed Batch Jobs.
• Maintenance OS Spider system support - powerful information ports that combine with internal client information: create new and fix existing SYBASE stored procedures, UNIX/Linux shell, Perl scripts with client data Feeds
• Backup Schedules for Linux Servers using DLT Tape drives.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on AIX servers.
• Logging events and forcing crash dumps, securing servers and troubleshooting issues.
• Troubleshooting and resolving of problems related to hardware, operating systems, third party applications and scripts.
• Initiating Backups on daily basis and monitoring the scheduled backups.
• Provided On call Support for Redhat Linux and IBM AIX server environments.

Confidential

System Administrator

Responsibilities:

• Installation and configuration of AIX, Red Hat Linux, UNIX, Solaris, Fedora, SUSE and Centos OS on new server builds as well as during the upgrade situations.
• Log management like monitoring and cleaning of old log files.
• System audit report like no. Of logins, success & failures, running cron jobs.
• Checking system performance on hourly or daily basis.
• Remotely coping files using sftp, ftp, SCP, winscp, and filezilla.
• User Administration and Group Administration for securing of resources using local operatingSystem authentication.
• Experienced in tasks like managing User Accounts and Groups, managing Disks and File systems.
• Configuring & monitoring DHCP server.
• Taking backup using tar and gzip and recovering files during the data loss.
• Experience in writing bash scripts for job automation.
• Documenting the installation of third-party software’s.
• Configuring printers to the Solaris and Linux environments.
• Maintaining relationship with Project Managers, Development Teams, DB Teams, Application support teams and Operational support teams to facilitate effective project deployment.
• Manage system installation, troubleshooting, maintenance and performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Responsible for modifying and optimizing backup schedules and developing shell scripts for it.
• Performed regular installation of patches using RPM and YUM.
• Experience managing various file systems using LVM and SVM and also configured file systems through network using NFS, NAS, SAN methodologies and installed RAID devices.
• Monitored and fine-tuned system and network performance for server environments running Solaris, Redhat Linux.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.
• Involved in creating new users, groups and setup their home directories and appropriate access, restrictions to software in the Active Directory environment and NIS domains