NARAYAN

Phn:- 479-***-****

e-mail:- acxsb8@r.postjobfree.com

PROFESSIONAL SUMMARY:

Close to 8 years of IT industry experience as a System administrator levaraging RHEL,SUSE,Solaris,AIX,HP-UX and VMWare Environment & also Experienced with DevOps Environment

Managed all aspects of the software configuration management process including code compilation, packaging/deployment/release methodology, and application configurations used configuration management tools Chef, Puppet.Experienced with AWS cloud

Process Automation and Monitoring using Perl, Python and shell Scripts.

Experienced in implementing and administering VMs using VMware ESXi and vSphere 4.x 4.1x and vCenter & Configuring and Installing VDI

Installing, configuring and managing Red hat Enterprise Linux. KickStart-PXE installations for complete hands-free installation of Redhat.

Well Experienced with Security Environments(Key management,SSL certificates,data encryption), Installation of SSL certificates in Linux web servers.

Good working knowledge of AWS Data Pipeline to move data between instances stored in AWS EC2 instances and computer instances.

Worked on GIT, Jenkins, perforce for code repository and continuous integration tool.

Upgrading/migrating to latest Red hat versions.

Installing and configuring DNS, DHCP, IIS,ISA,FTP and sendmail servers.

Installing and maintaining Oracle, MYSQL databases.

Installing and Configuration of VMWARE vSphere 4.x/5.x servers

Good knowledge in implementing NFS, NIS and SAMBA in cross platforms.

Installation of SSL certificates in Linux web servers.

Knowledge of SAN, NAS, multipathing and HBA drivers

Good Knowledge on servers integration using CETRIFY,QAS

Monitor and resizing disk space in LVM as needed in Linux,AIX servers

Package management using RPM on Linux server.

KickStart-PXE installations for complete hands-free installation of Redhat.

Hardware and software RAID management.

Managed GFS and GPFS filesystem.

Experienced in the Installation, Configuration and Administration of Web Sphere & Application Servers like Apache, Tomcat, Active MQ, WebLogic, WebSphere and JBoss Fuse

Installation and configuration of HA environment using Linux cluster and Veritas Cluster.

Backup of file system, data and Disaster Recovery. Experience in troubleshooting issues with Rackspace Cloud Servers by OpenStackconfiguration on Linux operating system.

Experience on using Tivoli Storage manager,Veritas Volume manager

Configuring and Monitoring using NAGIOS, ZENOSS and Xymon

Good experience with Job schedulers(Autosys,Crontab)

Good Communication Skill and self-motivated with a high degree of attention.

Good experience working in on site-off shore environments.

Willing to work on flexible hours for on-call support for 24/7 environment.

EDUCATION: Bachelor’s in Computer science, JNTU, Hyderabad, India.

TECHNICAL SKILLS:

Operating Systems: Redhat AS/ES 2/3/4/5/6, SUSE 9/10, FreeBSD, CentOS 4/5, AIX 6.1,7.1,V5,Solaris 9/10, Windows.

Languages: C, C++, FORTRAN and Pascal

Database: Oracle 9i, 10g, DB2, MS Access, MYSQL 3.X.

Web Applications: HTML, XML, PHP

Scripting: Perl Scripting, shell Scripting, python Scripting,Ruby,SQL

Networking: TCP/IP, NFS, Telnet, FTP,LDAP, DNS, DHCP, NAT, HTTP, SQUID, SAMBA,Tivoli

Web/APP Servers: Apache Web Server, Tomcat Web Server, JBoss,Weblogic7.0/8.1/9.x/10.x Websphere 5.x/6.x

Tools & cloud:- VMWARE,DevOps, AWS,OneOps,Bladelogic, IBM Tivoli,Remedy, Autosys.

PROFESSIONAL EXPERIENCE:

Walmart, Bentoville,AR Nov 2015 to Till

Sr.Sytems Administrator

Responsibilites:-

Managing Unix/windows Infrastructure involves day-to-day maintenance of servers & troubleshooting.

Installed and upgraded SSH Client Tectia in 4000+ (RHEL,Solaris,AIX,HP-UX)servers &1000 + Windows servers.

Administartion of Users and File Systems on Solaris,AIX and Linux

Creating SSH keys& managing them in Unix and windows Environment

Resolving the SSL Certificates requests ( new, renewal, obsolete, changing the ownership),Managing the PKI

Implementing the Scripts for Data security using Shell scripts

Worked with Jenkinscontinuous integration tool and Github repository hosting services.

Created multiple instances EC2 on AWS (Amazon Web Services) and configured them for QA environment.

Used Puppet tool to automate the LAMP(Linux,Apache,MySql,PHP) packeges installation

Responsibilities include designing and developing new back-end services, maintaining and expanding our AWS infrastructure, and providing mentorship to others on my team.

Maintaining and Troubleshooting of FTP Server, Samba Server of the client

Troubleshooting the activedirectory,Centrify user loging issues .

Installed and configured LDAP servers & managing LDAP accounts

Repo management for patching RHEL and SUSE servers.

Upgraded old servers from AIX 5.2 to AIX 7.1

Involved in migrating websphere 6.0 to 7.0 on AIX,LINUX and windows

Approve and work on Change Requests related to Unix, Cetrify and windows environments

Administration of Identity and access management in Two Platforms Windoows,Unix,Using different Active directory databases like Microsoft AD, Tivoli Directory server with LDAP.

Used various networking tools such as ssh, winscp, telnet, rlogin, ftp and ping to troubleshoot daily issues. Also responsible to design, implement and maintain DNS, DHCP,CIFS,NTFS,,NFS and FTP services.

Performed Red Hat Linux Kernel Tuning, memory upgrades.

Familier and Experienced with Agile Scrum Development

ENVIRONMENT: Security & Operations, DevOps,AWS,RHEL 5.5/5.6/5.7/6.1/6.2/6.4/6.5, AIX V7.1,HP-UX,Suse9/10, Centos4/5,solaris 9/10, Windows7, AD,Shell,Ruby,Powershell,NFS,DNS, LAMP,Remedy

Fannie Mae, Reston, VA Feb 2014 to Oct 2015

Linux,AIX/VMware Engineer

RESPONSIBILITIES:

Managing Linux Infrastructure involves day-to-day maintenance of servers and troubleshooting.

Installation and Configuration of VMWARE vSphere 4.1/5.0 servers and Created RHEL Guest VM’s for Dev/ Test and production environment

Installation and Configuration of ESXi hosts.

Installing Oracle VDI and Configuring Oracle VDI centrers

Building of VMware Guest and ESXi Hosts

Used to maintain various RHEL and zLinux boxes on two Vcenters on ESX 3.x and ESX 4.x and used to access these boxes through Vsphere clients.

Instrumental in working on various VMware RFT and used to work with various VMwareengineers.

Performed Red Hat Linux Kickstart installations on Redhat 4.x/5.x/6.x, using Cobbler server.

Performed Red Hat Linux Kernel Tuning, memory upgrades.

Installed upgraded and configured AIX servers using NIM Maser

Installed,configured and maintained IBM AIX 5.3,6.1,7.1 and upgraded to higher levels with an environment large as 400+ AIX servers

Planning,Configuring storage using LVM on AIX 7.1,6.1,5.3,5.2

Install AIX 7.1 on new IBM pSeries hardware(p730,p750,p760) utilizing NIM resource server as well VIO server configurations

Joined Linux server to Centrify zone, Mapped AD user to Linux server using Centrify.

Repo management for patching RHEL and SUSE servers.

Performing security audits and remediating the Vulnerabilities.

Remediation of FTP on ESP agents and made secure ssh protocol to transfer files using automated scripts

Worked on continuous delivery pipelines by using Jenkins as a scheduler/orchestrator and developed template based pipelines with embedded logic to work with any project.

Maintained and administered GIT source code tool also designed branching strategy for GIT.

Worked on building data center with AWS. Installed SVN, GIT, and Hudson/Jenkins images on AWS. Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.

Working with Logical Volume Manager and creating of volume groups/logical and performed Red Hat Linux Kernel Tuning.

Production support of Apache and JBoss including installation, configuration, management and troubleshooting

Installation & Configuration of software packages in Red Hat Linux. (Using both yum and rpm installations)

Participated in migrating environment from 4.x and 5.x versions to 6.4

Worked on chroot Jail (jailed sftp), Creating and supporting SFTP users.

Network Monitoring Using Zenoss.

Used various networking tools such as ssh, winscp, telnet, rlogin, ftp and ping to troubleshoot daily issues. Also responsible to design, implement and maintain DNS, DHCP,IIS,ISA,NFS and FTP services.

Creating and maintaining user accounts on NIS environment.

SENDMAIL configuration and administration, testing the mail server

Scheduling the Jobs using Autosys

Preparing the servers for Oracle RAC installation by adding related rpm package, setting up firewall rules, setup asm-disk etc

Implemented and Enhanced the Existing Scripts which are developed in BASH, Perl,python and SQL.

Planning and scheduling with hardware vendors for faulty hardware replacement

Installing and configuring the software packages based on project requirement

Expertise in Linux backup/restore with tar including disk partitioning and formatting.

Creating and Administrating File systems on Red Hat Linux.

Installed/ upgraded patches, firmware and security (Kernel) patches for all HW & OS’s in installed infrastructure

Resolved daily tickets using Remedy

Installed and maintained IBM TivoliStorage Manager (TSM) for Backups and data storage.

Experienced communicating with on site and off shore teams on daily basis.

ENVIRONMENT: RHEL 5.5/5.6/5.7/6.1/6.2/6.4/6.5, AIX 7.1,V6.1,5.3, Suse9/10, Centos4/5,solaris 9/10, Windows7, Oracle DB,Autosys,NFS,Samba,Python,Shell,perl DNS,Bladelogic, DevOps,AWS, LAMPstack, Centrify, Apache,JBOSS,and Web sphere on IBM servers and VMWARE virtual Infrastructure.

CHIA, Boston, MA Nov 2012 – Jan 2014

Sr.Unix/Linux Administrator

RESPONSIBILITIES:

Installation, administration, configuration of RHEL 4/5,Sun Solaris 8,9,10, on sun servers & HP-Dl585 servers including package management, patch management, regular system administration tasks.

Installed Redhat Linux on bare metal servers and virtual machines using kick start and hardening the servers.

Participated in migrating environment from 4.x to latest 5.x version.

Creating and cloning virtual machines in VMWARE environment using Virtual Infrastructure client 3.5 and VSphere 4.0.

Implemented Virtualization using VMware in Linux on HP-DL585

Configuring VDI

Creating logical volumes, extending the filesystems using both LVM and VxVM 4.1

migrating user identities into active directory using QAS

Perform daily maintenance routines on Linux servers, monitoring system access, managing file space and tuning the system for optimum performance.

Established a large number of Korn shell(KSH) scripts to monitor key AIX health and performance metrics,and then notify via SMTP.Established methods to gather and analyze AIX performance data via custom Lorn shell scripts and Microsoft SQL Server T-SQL stored procedures

Provided 24x7 System Administration support for AIX 5.3/ 5.2/ 5.1 based servers and Red Hat Linux 4.x, 5.x,Cent OSservers and resolved trouble tickets on shift rotation basis

Configuring and Administering DNS on AIX server environment

Desiging and managing disk space using AIX Logical Volume Management.strong technical skills on AIX LVM and troubleshooting

Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.

Automation using Chef&puppet

Worked with middleware team in resolving siuues related to Tivoli storage ( TSM).

Administration, package installation, configuration of OEL 5.4 and preparing the servers for Oracle RAC installation and adding nodes to the cluster.

Updated DNS configuration based on the new servers that are rolled out.

Worked and performed data-center operations including rack mounting, cabling.

Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.

Supporting LAMPstack

Worked on various applications and improving their performance by performance tuning and analysis.

Responsible for change management, troubleshooting and resolution of server issues for end users support.

SENDMAIL configuration and administration, testing the mail server

Installing and configuring Apache and supporting them on Linux production servers.

Adding servers to the domain and monitoring them using nimsoft, cacti, sitescope.

Assist System Administrators with various support issues.

Writing power shell scripts for Automated Back- ups and Cron Jobs.

Tuning kernel parameters for optimum performance.

Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.

Monitored server and application performance & tuning via various stat commands (vmstat, netstat, iostat etc) and tuned I/O, memory, etc.

Installing, Administering and troubleshooting Windows Server 2003

ENVIRONMENT: RHEL5.1/5.2/5.3, Suse,sun solaris 8/9/10, AIX 6.1,CentOS,Windows,VMWare Oracle, SQL, QAS, EMC Centerra, Bladelogic, servicenow,TSM, LAMPstack, Apache, Websphere, Tomcat on HP ProLiant servers and EMC storage

AMDOCS, Richardson, TX Oct 2011 – Sep 2012 Sr.System Administrator

RESPONSIBILITIES:

Supported infrastructure environment comprising SUN Solaris, HP-UX, Linux and IBM – AIX machines.

Installed, configured and maintained Solaris 10 (Jumpstart) and Linux (KickStart).

Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX and Solaris.

Administered, maintained Red Hat 4.0 AS, Troubleshooting Hardware, Operating System Application & Network problems and performance issues.

Administered, maintained windows 2003, Troubleshooting Hardware, Operating System Application & Network problems and performance issues.

Performed tasks like Backup, Software Management including Patch updates, Documentation, User Management, Network Management etc.

Used Simple Network Management Protocol (SNMP) to manage networking

Setting of ZFS on solaris 10.

Day to day maintenance of Veritas cluster Servers.

Configured Disk Volume Management with LVM of HP-UX.

Installed and removed software packages and patches on Solaris, HP UX and Linux systems.

Performed software monitoring, installation and troubleshooting

Performed reorganization of disk partitions, file systems, hard disk addition, memory upgrade, and DAT drive installation.

Maintained NAS storage.

Installing LAMP stacks and supporting the LAMP stack

Developed scripts for backups using Veritas, ufsdump.

Coordinated with clients in selecting proper hardware and software according to the departmental needs.

Installed and configured VERITAS Storage Foundation Suite, Veritas Volume Manager, Veritas cluster and Veritas file system.

File system tuning, growing, and shrinking with VERITAS File system 3.5/4.x (Vxfs).

Installed, maintained and troubleshooting NIS, NFS, Automounter and DNS servers

Monitored system activities, log maintenance, and disk space management.

Installed and configured LDAP server.

Knowledge of Tivoli storage manager.

Automation using Bladelogic.

Servers’ consolidation and virtualization using VMware virtual infrastructure, VMware ESX.

Supported all hardware diagnostics for SUN SPARC and X86 (Intel and AMD) machines systems.

RPM (Red Hat Package Manager) packages used for Linux distributions.

Supervise network monitoring standards, security, disaster/recovery, resource utilization and stability.

SENDMAIL configuration and administration, testing the mail server

Maintained Database, taking backups from remote servers.

Used python, Perl and shell Scripting extensively.

Actively Involved at Data Center or Work station.

Production Support of applications mysql, Tomcat, Apache (authentication, http services)

Maintained of RAID technologies

Installed and Configured WebLogic 8.1, TIBCO on various Development and Production Boxes.

Troubleshooting and maintenance of VERITAS Net Backup(4.5,5.0), Scripts for Daily backup reports, checking drivers status

Administered, maintained Red Hat 2.1, 3.0 AS, ES, Troubleshooting Hardware, Operating System Application & Network problems and performance issues

File system management using Logical volume management and Veritas Volume management(3.5,4.1,4.5)

ENVIRONMENT: Sun High-End Servers (12k/15k/25k), Midrange Servers (3800/4800/6800) Sunfire T series(T2000/T1000 and entry level Servers, storage arrays and Storage libraries,RHEL 4/5, Sun Solaris 9, 8, 7,Linux, 2.6,AIX, Veritas Volume Manager 4.1, 4.0,3.5,Solstice disk suite 4.2.1, sun cluster 3.1, Veritas NetBackup4.5,5.0 and 6.0,LAMPstack,Apache Server,Bladelogic server, TivoliVMware ESX servers, VMware Virtual Center, GSX servers, Windows 2000 / 2003 ( X86 servers )

HR Block Inc., Kansas City, MO Sep 2010 – Sep 2011

Unix/Linux Administrator

RESPONSIBILITIES:

Installed and Configured RHEL 2.1/3/4, Solaris 9 on Intel and AMD hardware

Configured hands-free installation using Kickstart and PXE

Participated in upgrading and migrating 2.x and 3.x to 4.x and 5.0

Kernel upgrades and applying errata as and when required.

Monitoring of Linux, Solaris servers using tools like vmstat, iostat, SAR, top, free etc.

Install, Update and erase the required packages to provide services using rpm and up2date.

Setup and configured Apache to integrate with IBM Websphere in load balancing environment

Partitioning disks using diskdurid, fdisk with raid options and multipathing with power path on SAN devices

Configured the scheduling of tasks using cron

Suggesting system Upgrades, planning & implementation.

Configuring DNS, DHCP, NIS, NFS in Sun Solaris 8/9/10 & other Network Services.

Providing administration and troubleshooting user related problems.

Constant Monitoring of System Performance and managed file systems.

Coordinating with vendors to solve the hardware and software related issues.

Implemented Security by disabling unused services and using IPtables and TCP wrappers

Used cognos reportool

Wrote shell and Perl scripting for automation purpose

Joining Linux,Unix servers to Active directory using Centrify

Creating new file system, mount file system, monitoring free space, disk usage, locating files and checking & clearing of log files.

Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security and Network management

AD certificate management

Provide responsive off-hours support in a 24 / 7 environment and ensure maximum availability of all servers and applications

ENVIRONMENT: RHEL2.1/3/4/5, Solaris,CentOS, Windows, Oracle, shell Scripting, NFS, Samba, DNS, Apache, Centrify,Websphere on HP ProLiant servers and EMC storage

Tech Mahindra Ltd, India Apr 2009 - Aug2010

Jr. System Administrator

RESPONSIBILITIES:

Installation and configuration of Red Hat Linux&Sun Solaris, NT servers

Installation of patches, security fixes, e-fixes, packages on AIX, Sun Solaris and Red Hat Linux.

Update latest patches and upgrade all applications to the latest versions.

Configured IBM RS 6000 for production, staging and test environments.

Scheduling jobs in Crontab, modifying them on regular basis according to requirement.

Setup LAN consisting of ten RS-6000 Servers running AIX 4.3,5.0, 5.1, and five SolarisName Servers (E450)

Supporting the network on connectivity issues relating to TCP/IP, IPX, and AppleTalk.

System Administration and engineering of Active Directory

Administering user accounts: Adding users, user-groups, removing users & groups and Changing user environments.

Run bash and perl script for automation purpose.

The primary responsibilities of the job include monitoring all the servers verify

Everything in sync and at optimum performance and take proactive measures to reduce the downtime.

Troubleshooting of DNS and DHCP related problems.

ENVIRONMENT: Red Hat Linux 3.0, IBM AIX 4.3.3,SUN Solaris 2.6, NT/2000, MS Operating System, DHCP, DNS, User Management, Network Management

Contact this candidate