Unix/LinuxAdministrator
Resume:
*******@*****.***
Jayaprakash Natarajan
I am a Redhat certified Linux Administrator with 12+ years of experience as a Unix System administration and 2+ years of experience as a DevOps engineer . I have expertise working experience in my current project on Unix administration along with Docker, Kubernetes, Jenkins, and other DevOps tools.
Working experience with orchestration using Kubernetes. Hands-on experience on deploying stateless and stateful applications in high availability. Cluster Monitoring using ELK & Kibana.
Hands on experience on Implementing CI/CD Pipeline with Git and Jenkins on Azure. DevOps practice for the microservice architecture using Kubernetes and orchestrated Docker Containers. Worked on several Docker components like Docker Engine, Docker Compose, and Docker registry.
I have experience in cloud services and cloud platforms like GCP and Azure. I have Hands-on experience on implementing the infrastructure using GCP.
With automation skill on shell scripting and python.
Professional Certification and Training:
Redhat certified System Administrator( RHEL – 7 )
Redhat certified System Engineer( RHEL – 7 )
Redhat certified System Administrator in OpenStack ( RHEL – 7 )
Sun Certified System Administrator for Solaris – 9
ITIL V3 Foundation.
Vmware Certified Associate for datacentre, Cloud and mobility.
Google cloud beginners level certification
Certified Kubernetes Administrator
SKILLS:
Experienced on infrastructure administration on Unix including RHEL,ubuntu,centos,AIX,Solaris.
Experienced in handling server troubleshooting with the OS vendors(Redhat, IBM), and hardware vendors(DELL, HP, Cisco)
Experienced on Server build and designed framework for our internal customers for datacentre, stores and distribution centres.
Experienced on backup technologies including Mozy,avamar,Rubrik. Performed full virtual machine and filesystem level backup restoration through rubrik.
Knowledge on veritas cluster management.
Knowledge on configuration management tools like puppet.
Automation on the daily routine tasks through shell scripting and python.
Experience in Installing Docker, Docker Image creation, Compose, Stack and Service concepts.
Worked on Kubernetes PODS, Deployments and Rolling Updates.
Created CI/CD Pipeline jobs using continuous integration tools like Jenkins.
Hands-On Experience with Metrics, Monitoring & Alerting tools such as ELK Stack.
Deploying PHP Guestbook Application with Redis.
Backing Up and Restoring Etcd In K8s Cluster.
Hands-On experience with Kubernetes cluster upgrade.
Experienced Troubleshooting Image & Control Plane Failure.
Well-versed in Technologies like Docker, Kubernetes, Jenkins, Managed Kubernetes service (GCP, AKS) and Git
Developing and documenting knowledge base articles for the server environmental issues.
Attending client meetings and crisis call for the major incident call to get resolved.
Co-ordinate with Internal teams like Virtualization, Network, Storage and Security teams to ensure un-interrupted and quality support environment.
Co-ordinate with Redhat vendors for root cause analysis and troubleshooting for the major issues on the Redhat Linux Operating system.
Implementing the performance tuning change requests on production environment for enterprise wide system stability.
Assisting decommissioning team in red tag activities and removing the nodes from the environment without affecting the production.
Assist server build team in configuration of consoles and do a physical check in the datacenter and work on any OS related issues until it gets deployed to production.
Expertise with Network IP configuration on the servers,debugging firewall/iptables, loadbalancer, DNS/DHCP, tcpdump analysis.
Automating day to day repeated tasks and implementing deployment scripts for the change requests scheduled on the production environment.
Updating the configuration files on server through puppet and spacewalk tool.
Support high availability cluster environments both on Linux and AIX and resolve for any issues.
Implementing the HADR setup and providing the support during the patching activity.
Worked on patching related incidents like kernel update issue, filesystem space issue, rpmdb error issue, repo missing issue, spacewalk client registration issue, server connectivity issue, SSH key issue, Node down and server hung issue, Mondo backup issue.
Co-ordinate with other internal teams like cyberark, puppet and spacewalk,Monitoring to fix patching related issues on the server.
Assist patching team on HACMP server failover on the production and non- production servers to accomplish 100% patching compliance status.
Monitoring the overall status of the Servers through tools like Splunk, netcool, Graphana and work on the alerts generated to maintain a stable environment.
Managing and resolving user related issues on the operating system,User permission levels and security related tasks.
Opening case with Redhat, DELL and HP Vendors and worked with support engineers to resolve OS and hardware related issues.
Worked on fixing security vulnerabilities on the unix servers scanned by qualys, mcafee,crowstrike and Tanium agents.
Experience Summary
Total Years of Experience : 15 yrs
Areas/Applications
Retail – The Home Depot – Unix/Backup administrator and Devops Engineer
Research and Development - Agilent Technologies – Unix L2/L3 Administrator
Telecom – British Telecom – Unix L1 Administrator
Operating system – Unix and Windows
Languages – Bash shell scripting & Python
Database - Mysql
Career Profile
Since April 2012 Tata Consultancy Services
Title Unix Administrator for The Home Depot., Atlanta, USA.
Period Since April 2012
Client Name THE HOME DEPOT
Position Assistant Consultant
Responsibilities To design, build and support the linux systems through puppet, spacewalk tools for the datacentre servers until it turns over to the production state. Also worked as a backup administrator using avamar/Mozy tool for more than 2000 store servers.
Project This project involves providing infrastructure support for the UNIX and Windows Engineering Support, functioning day to day activities and providing maintenance solutions. Also in handling the production issues related to UNIX and Windows,Patch management / Upgrade version planning and execution,building and migrating both physical and virtual Servers .
Carried out the following activities:
There are more than 15000 UNIX Servers out of which 1000 are AIX and the remaining is Linux. This includes the Production servers, development servers and the testing servers where all the applications are installed and tested before going live.
Support the Unix environment which runs on different operating system includes RHEL 5/6/7, Centos, and AIX on both production and non-production datacentre and store environment.
Involved in co-ordination with OS and hardware vendors to keep the production system stable.
Worked as a linux design engineer for building oracle rac, db2 physical servers, and Virtual build servers on various applications like kakfa, TMS, COM, splunk, security, WMS and abinitio.
Also actively involved in nutanix cluster movement and memory upgradation for the critical graphite application on the physical servers.
Co-ordination with customer, vendor and various matrix team to get the design and build work completed on the physical & virtual servers until it reaches the final stage.
Involved in Server deployment, File system Management and Post deployment processes.
Maintain support documentation and knowledge base articles.
Maintain the successful current OS and data backups using MNR and TSM/Rubrik on datacenter servers.
Perform the OS deployment through Puppet,spacewalk,HPSA and kickstart method on both physical and virtual servers by coordinating with onsite engineer.
Performed configuration update on the build servers using puppet tool.
Perform the security updates for the newly built Linux servers and package installation as per the client requirements.
Involved in the migration of physical to virtual hardware of linux servers through ILO and vcentre consoles by coordinating with the concern production teams.
Performed Vmware Vmotion on the virtual servers where the performance is degraded.
Work and co-ordinate with clients in the server build on post deployment tasks which includes Informix,DB2,SAP,oracle RAC configuration on the newly built servers.
Also involves in various post deployment tasks like filesystem creation on multipath, Informix raw filesystem creation, oracle asm disk creation, TSM for oracle, SAP configuration, veritas cluster configuration, NFS configuration, adding new mount points for NAS, mainframe paths, supporting servers for DMZ,PCI movement.
Monitoring and maintaining backups on avamar Grid servers.
Resolving avamar backup related issues within a SLA time.
Restoration of data from avamar/Mozy/Rubrik backup as per customer request.
Lead for both Unix server build team and Backup/Restore team during my tenure in offshore.
Worked on SCCM tool for windows build related issues
Automated manual efforts in pulling the backup metrics through GUI and as well as our daily activities using bash/python scripting.
Automated build manual tasks like configuration of files,filesystem creation, user permission settings using bash scripting language and pushed to all the newly built client servers from the master server through SSH authentication keys.
Worked on Hardware RAID storage array configuration through Server console for the SSI 2 migration project
Worked on scanning and mapping the new LUN, which are allotted from storage to the new physical hardware and allotted the new physical disks on the physical build servers
Working currently on ITSM change management processes and assisting user based requests.
Hardware HP ProLiant, DELL power edge series, cisco.
Operating System RedHat Linux, AIX, HP-UX, windows XP / Vista
Languages Bash and python scripting
Special Software Service-now, puppet, spacewalk, HPSA, TSM, MNR, Rubrik, VMware.
Project Location Chennai, India
January 2008 - April 2012 HCL Technologies Ltd - IOMC
Title Unix Administrator – Level 2
Period March 1st 2010 – April 5th 2012
Client Name Agilent Technologies
Position Specialist
Responsibilities:
Managing Linux, HPUX, Solaris Production and Development Servers.
Provides technical support to development, QA, production and database teams.
Hardening has been done based on client requirements.
Operating System installation and configuration of linux/Solaris servers through kickstart/jumpstart method.
Incident management are performed through HPOVSD ticketing tool.
File system management - Creation, Deletion, Changes and monitoring
User & Group Management - Adding, managing and removing activities.
Configuring and working with NIS/NFS setup environment
Installatiom and configuration of monitoring tool agent on the servers
Netbackup client installation and samba administration
Device management - adding, changing and removing activities
Configure and maintain the sudo access for user level and also perform ssh keygeneration and troubleshooting activities.
Handling decommission activities for unix servers like Linux & HP-UX.
Management of various tools like star, cfengine, zenoss and sophos antivirus.
Preparing Root cause Analysis document for the priority 1 issues.
Co-ordinating with the RedHat vendors for the OS performance issues.
Project
Agilent Technologies, or Agilent, is an American company that designs and manufactures electronic and bio-analytical measurement instruments and equipment for measurement and evaluation. These measuring instruments are mostly tested on a Research and development division on a strong operating platform before its sale.
It has got more than 7000 servers, where HCL provides infrastructure support to the Research and development division where the system runs mostly on Linux, HPUX, Solaris Windows, Vmware(ESX hosts) platform and the support is based on 24*7.
Hardware HP ProLiant, DELL power edge series, Vcentre.
Operating System RedHat Linux, HPUX, Solaris, windows 2000/2003/XP
Language Shell scripting
Special Software HPOVSD, Veritas netbackup, Zenoss, star, sophos, VMware.
Project Location Chennai, India
Title Unix Administrator – Level 1
Period January 24th 2008 – February 28th 2010
Client Name British Telecom
Position Senior Analyst
Responsibilities
Monitoring and automating jobs with shell scripts
Incident and problem management through Bridge Clarify tool
Debugging the live production shell script.
Configuring apache web servers on the sun solaris systems.
Managing the filesystem and user quotas across all the servers.
Troubleshooting user related issues.
Server performance monitoring and maintenance.
Scheduling system related and application cron jobs.
Project
BT, is a British multinational telecommunications services company with head offices in London, Great Britain. It is one of the largest telecommunications services companies in the world and has operations in over 170 countries.Through its BT Global Services division it is a major supplier of telecoms services to corporate and government customers worldwide. Its BT Retail division one of the largest suppliers of telephony, broadband and subscription television services in GB, with over 18 million customers.
It has got nearly 10000 servers, where the user friendly applications runs on the solaris, hpux, windows environment through apache and tomcat services.
HCL provides support to the application platform as well as the level 1 unix support to the client BT on the basis of 24x7 .
Hardware Sun Sparc T4-1 server, Solaris x86
Operating System Sun Solaris 9, 10,windows 2003,XP
Languages Shell scripting
Special Software Bridge Clarify
Project Location Chennai
March 2006 – January 2008 Lason India Pvt Ltd ( HOV Services )
Title Unix engineer ( level 1 )
Period March 07th 2006 – January 21st 2008
Position Technologist - IT
Responsibilities
Responsible for providing technical support to the internal customers.
Project environment creation.
Performing disaster recovery testing.
User account management.
Process and workflow monitoring across the internal projects.
Monitoring filesystem and quota issues across the projects.
Data storage area movement from one server to other server.
Mysql database querying and maintenance.
Migrating new projects to the unix environment which involves creation of user environment,permission,umask settings, scheduling cron jobs, archival and backup process.
Preparation of documents for the new project tasks.
User related issues are managed through BPOTS tool.
Training Attended
Year
Title
Location
Organisation
2005
Networking & Telecom Administration
Chennai
Sun I Tech Pvt Ltd
2008
Oracle 9 Database Administration
Chennai
HCL Technologies Ltd
2009
Sun Solaris System Administration -10
Chennai
Network Solutions Ltd
2012
ITIL V3 Foundation
Chennai
Tata Consultancy Services Ltd
2013
Process improvement,IQMS
Chennai
Tata Consultancy Services Ltd
2016
Redhat Linux(RHCE,RHCSA,OpenStack)(2 weeks of Classroom training)
Chennai
Plexus Networks
2015
Puppet & Spacewalk(5 days of Classroom training)
Chennai
Tata Consultancy Services Ltd
2016
Amazon Web Services (Cloud)(5 days of Classroom Training)
Chennai
Tata Consultancy Services Ltd
2018
Google Cloud Platform
Online course
Tata Consultancy Services Ltd
2018
Python
Online course
Tata Consultancy Services Ltd
Personal Details
Date of Birth April 08th 1983
Sex Male
Nationality Indian
Marital Status Married
Current Address : 2511 Northplaceway SE Smyrna Georgia – 30080
Email : *******@*****.***
Contact Number : +1-678-***-****
Education : Bachelor of Engineering (Anna University, Chennai,India)
Visa Type: H1B
Valid up to Jan 29th 2023
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