pavan150781

Technology System Analyst

July 15, 1981

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About Candidate

Curriculum Vitae

Madhusudhana Pavankumar Vegesna

Linux/Unix Engineer

Mail id: pavan150781@gmail.com

Mobile no: +65 86097576.

CAREER OBJECTIVE:

To seek a challenging and responsible position in a reputed organization where my capabilities, technical skills and experience are best utilized and my professional skills are further enriched.

PROFESSIONAL SUMMARY:

I have around 15 years of experience in IT industry with different type of profiles. Have good analytical skills, committed, energetic and a good team player.

As part of my assignment, I have been involved in various roles like Linux, AIX support and Data Center Operations.

I have good hands-on in incident and problem management which primarily focuses on resolving the incident and problem, coordinating with various team, communication, report generation and preparing executive summaries for senior management review.

I have good experience in managing 24×7 businesses as usual activities in various platforms.

TECHNICAL SKILLS:

Operating Systems : RHEL4.x,5.x,6.x,7.x,8.x,CentOS 6.x,7.x,SLES11.x,12.x,IBM AIX 6.x, 7.x.Solaris11

Cluster software : sglx, HACMP, POWER HA System Mirror,VCS.

Disk Administration : RAID, LVM, VXVM.

Web/mail Service : HTTP, SENDMAIL.

Network Design Services : NFS, VSFTP, DNS, DHCP, SAMBA, SSH.

Scripting : Bash scripting.

Ticketing Tools :Remedy,ITSM,Servicenow

Other Tools : Configuration Management tools puppet,Ansible, Docker containerization, rundeck automation tool, RH Satellite,Dacapo web UI for managing vRO related tasks

Monitoring tools : CA Spectrum, Nagios,Zabbix.

Backup and archive tool: Veritas Netbackup,networker.

Storage : IBM Storwize v7000

PROFESSIONAL EXPERIENCE:

• Technical System Analyst- Infineon Technologies Asia pacific Pte Ltd., Singapore from January 2021 to Present.

• Unix Engineer- NEC Asia pacific Pte Ltd., Singapore from November 2018 to November 2020.

• Senior Infrastructure Engineer-Linux Specialist in Applied Info Services India Private Limited, Hyderabad from July 2017 to November 2018.

• Lead Administrator in Wipro Limited, Hyderabad from October 2016 to July 2017.

• Senior Linux Administrator-Technology in Butler India Technical services, Hyderabad from February 2015 to October 2016

• Senior Consultant-IMS in Infosys Limited, Hyderabad from March 2013 to December 2014.

• Technical Services Specialist in IBM India, Hyderabad from October 2011 to March 2013.

• Senior Linux Administrator in JPMorgan Chase &Co on payrolls of Magna Infotech, Hyderabad from October 2010 to October 2011

• Systems Engineer-IMS in Sify Technologies Limited, Hyderabad from March 2007 to October 2010.

QUALIFICATION AND CERTIFICATIONS:

• Bachelor of Technology in Electronics and Communications Engineering from Biju Patnaik Technical University, Orissa.

• Red Hat Certified Engineer (RHCE No: 805009467242201)

PROFESSIONAL EXPERIENCE RESPONSIBILTIES:

Organization: Infineon Technologies Asia pacific Pte Ltd. Singapore.

Duration : January 2021 to present.

Technology: Red hat Linux 6.X,7.X,8.x, CentOS 6.x,7.x,8.x.

Description: This project provides 24X7 Server support for Infineon Unix Infrastructure.

Responsibilities:

· Providing Remote Infrastructure Support to the Infineon Global Data centers at different geographical locations, which include more than 4500 Linux servers.

· Installation of Red hat Enterprise Linux, CentOS on HP ProLiant Servers (DL 380 G10 Series, Dell R740) and also using advanced installation like custom kick start through foreman using PXE booting and ISO customization.

· New physical server hardware testing, liaising with hardware vendors on hardware issues and failures. Hot swappable HDD replacement.

· OS provisioning through foreman, vRO.

· Creating and maintaining docker containers using docker compose files on centos linux physicals,VMs.

· Creating and Installing the Redhat Linux and centOS 6.x,7.x,8.x on VMs by vRo web UI workflow.

· HP Service Guard (sglx) cluster configuration, management and troubleshooting.

· Monitoring the scheduled backups and updating the concern teams.

· Linux LVM management.

· Quarterly preventive maintenance of servers with firmware upgrade and applying OS security patches through puppet.

· Actively engaged in troubleshooting efforts for OS, LVM file system issues, sglx cluster issues, network, and applications. Fine tune system for optimal performance.

· System performance and bottle neck issues.

· Engage vendor for Hardware faults on HP and Dell servers for part delivery.

· Involve in part replacements like HDD,DIMM, HW RAID Battery.

· Involve in receive and rack and stack new HP, DELL servers and ensure that network and fiber channel connectivity.

· Working on BAU operations by closely following Remedy queue for incidents, Task requests and Change Requests.

· Actively coordinated with various stake holders during Quarterly preventive maintenance.

· Configuration management carried out through puppet servers. Quarterly security patching applied through puppet.

· Hardware vendor liaison on physical hardware issues and timely closing the issues.

· Working on POC of new initiatives from IT Team and supports for thorough testing with Application and DB Teams.

· Repetitive tasks created under various jobs in rundeck tool.

· Updating Service Operations Cockpit (SOC) for critical issues and planned activities, so global teams have better visibility.

Organization: NEC Asia pacific Pte Ltd. Singapore.

Client : Multiple Govt. Agencies, Singapore.

Duration : November 2018 to November 2020.

Technology: Red hat Linux 6.X,7.X,ubuntu 14.x IBM AIX 7.X.

Description: This project provides 24X7 Server support for Singapore Government agencies.

Responsibilities:

· Providing Remote Infrastructure Support to multiple clients’ Data centers at different locations.

· Installation of Red hat Enterprise Linux on HP ProLiant Servers (DL Series), Intel Xeon using advanced installation like custom kickstart, Network NFS/FTP installation. ISO customization.

· Creating and Installing the Redhat Linux 6.x,7.x on VMs.

· Creating users, groups and providing the access as per the client requirement.

· Creating LVMs and managing as per the project requirements.

· Analyze redhat released patches and VA patches for the clients’ servers and propose recommendation to client’s IT consultants.

· Configuring and managing YUM servers. Installing rpm packages and patches through yum update. Security configuration, Logs auditing and patching.

· Created and maintained docker containers on ubuntu linux physical machines.

· Post installation configurations and implementing security hardening best practices

· through bash script.

· Performance tuning by setting kernel parameters as per application recommendations.

· Modifying the server configurations to entire server farm by using ansible.

· Trouble shooting the server issues by following the ITSM queue.

· Working on BAU operations based on ITSM incidents, Service requests and Change Requests.

· Creating new logical volumes, creating file systems, working with file system changes such as changing mount point, changing file system size (grow or shrink).

· Using alternate disk installation method when TL upgrading and migrating on AIX Operating system.

· HACMP – Monitoring services, Starting and Stopping Cluster Services, moving resource groups across the nodes, increasing file system in cluster file system, synchronizing cluster resources and cluster verification.

· Creating/removing paging space, checking paging space usage and increase/decrease if required.

· Server Health Checkups.

· Working on Root cause analysis on customers’ request.

Organization: Applied Info Services India Private Limited, Hyderabad.

Client : GEICO, USA.

Duration : July 2017 to November 2018

Technology : Red hat Linux 5.x, 6.X, SLES 11.x,12.x IBM AIX6.x, 7.X.

Description: This project provides 24X7 Server support for GEICO USA Region

Responsibilities:

· Providing Remote Infrastructure Support to the GEICO USA Data centers at different geographical locations, which includes more than 2500 Linux servers.

· Installation of Red hat Enterprise Linux,Suse Linux Enterprise Server on HP ProLiant Servers (DL Series), Intel Xeon, Cisco UCS Servers and also using advanced installation like custom kickstart, Network NFS/FTP installation. ISO customization.

· OS provisioning through kickstart.

· Actively engaged in troubleshooting efforts for OS, Veritas file system issues, Veritas cluster issues, network, and/or applications. Fine tune system for optimal performance.

· Linux File system management. Veritas file system management, new file system creation. LVM, VXVM Configuration & management.

· Configuring & Managing YUM servers. Installing rpm packages, and patches via yum update. Security configuration, Logs auditing and patching.

· Actively engaged in frequent DR tests.

· Monitoring the scheduled backups and updating the concern teams.

· Sharing resources over the network using NFS from server and mounting at the client side by permanent mount.

· Network Configuration. Administer the NIC settings, NIC bonding.

· Configuring and managing Apache and Squid proxy servers.

· Storage Technology Refresh migration and host based migration using lvconvert on linux servers.

· Cron job Scheduling & management.

· Managing and configuring iptables firewall rules.

· Working with various clients. Assisting them via ticketing system remedy, by Chat and by Email.

· Working on standard ITIL based processes like incident management, change management and problem management processes.

· Actively involved in Service request related tasks.

· Creating and maintaining support documentation & checklist and knowledge base repository.

· Contribute to project work and ongoing documentation libraries.

· Keep customers informed of priority and progress of their request. Responding and escalating to monitored infrastructure events. Classifying and describing Incidents and Service Requests.

· Escalate and report the service/system outages to next level of Engineers. Update and close ticket on incident closure. Sending Daily Activity Reports.

· Creating new logical volumes, creating file systems, working with file system changes such as changing mount point, changing file system size (grow or shrink). Excellent trouble shooting skills on Logical volume manager, good hands on LVM high level commands.

· Designing and managing disk space using AIX Logical Volume management. Checking error reports and health check of the servers

Organization : WIPRO TECHNOLOGIES LIMITED, HYDERABAD.

Client : CITI BANK NA,EMEA

Duration : Oct 2016 to July 2017

Technology : Redhat Linux 5.x, 6.X, IBM AIX6.x, 7.X.

Description : This project provides 24X7 Server support for CITI BANK NA, USA,EMEA Region

Responsibilities:

· Providing Remote infrastructure Support to the CITI BANK Data centers at different geographical locations, which includes more than 5000 Including Linux and AIX servers.

· Installation of Red hat Enterprise Linux on HP ProLiant Servers (DL Series), Intel Xeon, P4 Servers and also using advanced installation like custom kickstart, Network NFS/FTP installation. ISO customization.

· OS provisioning through kickstart.

· Actively engaged in troubleshooting efforts for OS, Veritas file system issues, Veritas cluster issues, network, and/or applications. Fine tune system for optimal performance.

· Linux File system management. Veritas file system management, new file system creation. LVM, VXVM Configuration & management.

· VCS cluster configuration, management and troubleshooting.

· Configuring & Managing YUM servers. Installing rpm packages, and patches via yum update. Security configuration, Logs auditing and patching.

· Actively engaged in frequent DR tests.

· Monitoring the scheduled backups and updating the concern teams.

· Sharing resources over the network using NFS from server and mounting at the client side by permanent mount.

· Network Configuration. Administer the NIC settings, NIC bonding.

· Configuring and managing Apache and Squid proxy servers.

· Storage Technology Refresh migration and host based migration using lvconvert on linux servers.

· Cron job Scheduling & management.

· Managing and configuring iptables firewall rules.

· Working with various clients. Assisting them via ticketing system remedy, by Chat and by Email.

· Working on standard ITIL based processes like incident management, change management and problem management processes.

· Actively involved in Service request related tasks.

· Creating and maintaining support documentation & checklist and knowledge base repository.

· Contribute to project work and ongoing documentation libraries.

· Keep customers informed of priority and progress of their request. Responding and escalating to monitored infrastructure events. Classifying and describing Incidents and Service Requests.

· Escalate and report the service/system outages. Update and close ticket on incident closure. Sending Daily Activity Reports.

· Using alternate disk installation method when TL upgrading and migrating on AIX Operating system.

· Storage Technology Refresh migration and host based migration using migratepv on AIX.

· DLPAR operations, VIO management and operations.

· Shared Ethernet Adapter and disks setup to LPARs through VIO.

· SEA failover test and VSCSI and NPIV disks setup to LPARs.

· Designing and managing disk space using AIX Logical Volume management. Checking error reports and health check of the servers

· HACMP Cluster configuration, plan, design HACMP cluster nodes, Network configuration, configuring disk heart beats, Performing failover testing, verification, synchronization.

· Configuring cluster resources, resource groups and defining their behaviors etc., Configuring Application server resource group with startup and stopping scripts. Troubleshooting fall over, fall back issues, analyzing different hacmp logs to diagnose and finding root cause.

· Defining shared volume groups and working on different operations such as creating shared file systems, increase or decrease file system sizes, concurrent disk for disk heart beat etc.,

· HACMP troubleshooting. Checking heart beats manually to troubleshoot etc., working HACMP events, configuring events etc.,

· Taking regular system backup using mksysb and volume group backup using savevg utilities.

· Creating/removing paging space, checking paging space usage and increase/decrease if required.

Organization :Butler India Technical Services Limited, Hyderabad.

Client : Royal Caribbean Cruisers Limited, FL, USA.

Duration : Feb 2015 to till date.

Technology : Redhat Linux 5.x, 6.X, IBM AIX6.x, 7.X.

Description : This project provides 24X7 supports for The Royal Caribbean Cruisers Limited, Giant in entertainment ships and tours provider, Linux/Unix environment.

Responsibilities:

· Installing Redhat Linux using kickstart server.

· Creating users, groups and providing the access as per the client requirement.

· Creating LVMs and managing as per the project requirements.

· Configuring and managing YUM servers. Installing rpm packages and patches through yum update. Security configuration, Logs auditing and patching.

· Post installation configurations and Server Hardening through bash script.

· Installation and configuration of Veritas Volume manager, Veritas Cluster.

· Creating and Installing the Redhat Linux 6.x on VMs.

· Worked with the onsite team on network issues and creating the Local satellite server infra.

· Configuring NFS and managing NFS related issues.

· Performance tuning by setting kernel parameters as per application recommendations.

· Implementing security hardening best practices.

· Modifying the server configurations to entire server farm by using puppet.

· Trouble shooting the server issues by following the remedy queue.

· Configuring the TSM BA client backups for servers.

· Working on day to day OS level BAU remedy incidents, remedy work order tasks and Change Requests.

· Installing and configuring TSM client and initiating, automation of backups.

· Using alternate disk installation method when TL upgrading and migrating on AIX Operating system.

· Storage Technology Refresh migration and host based migration using migratepv on AIX.

· DLPAR operations, VIO management and operations.

· Shared Ethernet Adapter and disks setup to LPARs through VIO.

· SEA failover test and VSCSI and NPIV disks setup to LPARs.

· IBM Power HA system mirror (clustering) configuration.

· Creating new logical volumes, creating file systems, working with file system changes such as changing mount point, changing file system size (grow or shrink).

· Designing and managing disk space using AIX Logical Volume management. skills on AIX LVM and troubleshooting. Checking error reports and health check of the servers.

· Using alternate disk installation method when upgrading or installing TL on AIX Operating system.

· HACMP – Monitoring services, Starting and Stopping Cluster Services, moving resource groups across the nodes, increasing file system in cluster filesystem, synchronizing cluster resources and cluster verification.

· Taking regular system backup using mksysb and volume group backup using savevg utilities.

· Creating/removing paging space, checking paging space usage and increase/decrease if required.

· LPAR operations including: scheduling operations, troubleshooting activation errors, configuring and using system profiles, and activating and shutting down partitions, Power on/off partitions.

· Create partitions, partition profiles, and system profiles, Activate partitions, and Schedule operations for partitions, dynamic operations for adding, moving, and removing memory, processor resources, and I/O slots.

· Dynamically add, remove and move resources in the LPARs.

· Dedicated and shared processors, virtual processors, processing unit, and allocation of processing power from the shared processor pool etc.,

· Server Health Checkups.

· Performing the QA on the Deployed servers as per the Requirement sheet.

· Working on Tivoli backup failure related issues, TWS unlink issues.

· Working on Root cause analysis on customers’ request.

Organization : Infosys Limited, Hyderabad.

Client : Ministry of Corporate Affairs,NewDelhi.

Duration : Mar 2013 to Dec 2014

Technology : Redhat Linux 5.x, 6.X, IBM AIX6.x, 7.X.

Description : This project provides 24X7 supports for The Ministry of Corporate Affairs, Authority entity from Government of India for approving the establishment of new companies in India, Linux/Unix environment.

Responsibilities:

· Installation of Red hat Enterprise Linux on IBM x-Servers, Intel Xeon using advanced installation like custom kickstart. Configuring hardware RAID at BIOS before Linux installation.

· OS provisioning through kickstart.KVM, RHEV installation.VM creation and configuration.

· Installation and configuration of Veritas Volume manager, Veritas Cluster.

· Linux, Veritas File system management, new file system creation. LVM.

· Health Monitoring of all Linux Production Servers.

· Addition, modification of Users, applying sudo to give special privilege to Users who requires special permissions.

· Configuring LVM partitions and their by LVM resizing accordingly in Linux.

· Fine tune system for optimal performance.

· Configure & Managing NFS and SAMBA servers

· Configure & Managing FTP and SSH servers

· Involves Installation of new packages, kernel upgradation and Patch Administration.

· Managing DNS services

· Disk space usage checking and taking the necessary actions.

· Automating jobs using Crontab.

· Creating new users, groups and setup home directories and appropriate access restrictions to software and directories.

· Basic IPTABLES firewall configuration.

· Creating basic shell script to automate basic tasks.

· Designing and managing disk space using AIX Logical Volume management. Strong technical skills on AIX LVM and troubleshooting. Checking error reports and health check of the servers

· HACMP Cluster configuration, plan, design HACMP cluster nodes, Network configuration, configuring disk heart beats,Performing failover testing, verification, synchronization.

· Defining shared volume groups and working on different operations such as creating shared file systems, increase or decrease file system sizes, concurrent disk for disk heart beat etc.,

· HACMP troubleshooting. Checking heart beats manually to troubleshoot etc., working HACMP events, configuring events etc.,

· Providing support for development teams while their application deployments and troubleshooting the end user’s incidents.

· Actively involved in Service request related tasks.

· Creating and maintaining support documentation & checklist and knowledge base repository.

· Contribute to project work and ongoing documentation libraries.

· Keep customers informed of priority and progress of their request. Responding and escalating to monitored infrastructure events. Classifying and describing Incidents and Service Requests.

Organization : IBM India Private Limited,Hyderabad.

Client : State Street Corporation, USA

Duration : Oct 2011 to March 2013

Technology : Redhat Linux 5.x, 6.X, IBM AIX6.x, 7.X.

Description : This project provides 24X7 Server support for State Street Corporation, USA

Responsibilities:

· Providing Remote infrastructure Support to the SSC Data centers at different geographical locations, which includes more than 2500 Linux servers.