SUMMARY

• Over 8 years of experience as a Linux/Unix Engineer working on Data Center Migration, Production Support and Scripting.
• Education: Bachelors in Engineering, JNTU Hyderabad, India. 2009
• Installation, configuration and performance troubleshooting of Red Hat Enterprise Linux (RHEL 5, 6, 7) and Solaris 10, 11 with AIX and VMware
• 24/7 Production support for on - call on RHEL and Solaris environments.
• Disk Management using a variety of volume managers such as Veritas Volume Manager, Logical Volume Management (LVM), ZFS, OCFS, ASM, SVM, etc
• Excellent knowledge of Shell Scripts, PERL scripts, Ruby scripts and Python Scripts.
• Strong experience in System Administration, Installation, Upgrading, Patches, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX (SUN Solaris, Red Hat Linux)Systems.
• Worked with Veritas Netbackup, TSM, Tivoli, Nagios
• Familiar with various database technologies, use, implementation, support and big data concepts and tools
• Virtualization proficient - LDOM, zones and VMware
• Worked for implementing security standards according to SOX, PCI, SAS70, etc
• Experienced in analyzing and correcting the kernel performance issues using various utilities like Topas, vmstat, mpstat, sar, etc
• Proficient with configuring and maintaining NFS, DNS, NIS/NIS+, DHCP, SMTP, and Networking with TCP/IP.
• Managing Solaris 10 ZFS ZPOOLs.
• Experienced in creating CRON jobs to automate various System Administration tasks using the crontab utility.
• SCM, Environment Management and Build/Release Engineering for automating, building, releasing and configuring changes from one environment to other environment.
• Experienced in AWS Cloud platform and its features which includes EC2, VPC, EBS, AMI, SNS, RDS, EBS, CloudWatch, Cloud Trail, CloudFormation AWS Config, Autoscalling, CloudFront, IAM, and S3.
• Having good Experience in Configuration Management tools like Ansible for transferring and running the modules with the help of SSH based systems.
• Installed and configured an automated toolPuppetthat included the installation and configuration of thePuppetmaster, agent nodes and an admin control workstation.

TECHNICAL SKILLS

Operating Systems: Linux (Red Hat 4.x, 5.x, 6.x, 7.x), Solaris 9, 10, 11, UNIX, MS WINDOWS, AIX, Ubuntu.

Languages: C, C++, Java

Scripting Languages: SHELL, PERL, RUBY, PYTHON

Databases: My SQL, MS Access, Oracle 9i/10g/11g, DB2, RAC

Application Servers: WEBLOGIC, WEBSPHERE, APACHE TOMCAT, JBOSS

Tools: ANT, MAVEN, HUDSON/JENKINS, CHEFF, PUPPET, BUILD FORGE, CRUISE CONTROL, BAMBOO, NEXUS, DOCKER

Cloud: AWS EC2, VPC, EBS, AMI, SNS, RDS, EBS, Cloud Watch, Cloud Formation AWS Config, S3, Cloud Trail, IAM. VMware.

PROFESSIONAL EXPERIENCE

Confidential, Atlanta GA

Unix Engineer with DevOps

Responsibilities:

• Building new servers and production support for Red Hat Enterprise Linux and Solaris servers
• Patch management using yum repositories on satellite sever, puppet and chef
• Installing, and configuring default and third-party packages on RHEL Linux and Solaris 10,11 servers Using, yum, and rpm utilities.
• Proficient in Networking, configuring TCP/IP, DNS, NFS, SAMBA, LDAP, SSH, SFTP, SMTP,SNMP.
• Utilize UNIX (Solaris 8) based systems for monitoring system management, Netcool, Remedy, HPOV and BMC Patrol andSNMPtraps.
• Performs Monitoring and Log Management on Unix Solaris 10,11 and Red Hat Enterprise Linux, Centos servers; including Processes, crash dumps and, swap management, with password recovery and performance tuning.
• Monitoring Linux/centos servers using command line tools and with nagios software. Administer, Configure and Troubleshoot VERITAS Volume Manager,File Systemsand VERITAS Cluster Server.
• Monitoring the availability and health of the infrastructure and applications across multiple data centers usingNagiosXI (ping, cpu load, memory usage, disk IO, processes)
• Created and configured volumes on Solaris 10,11 systems with volume managers such as SVM, ZFS, VERITAS volume manager including LAN-wide FreeNAS X86.
• Configured and managed storage volumes such as LVM and VERITAS on Red Hat Linux/centos systems.
• Worked withAnsibleplaybooks for virtual and physical instance provisioning, configuration management, patching and software deployment on OpenStack environment.
• Involved in capacity planning and requirements gathering for multi datacenterCassandracluster
• Involved in the process of designingCassandraArchitecture.
• Automated setting up server infrastructure for theDevOpsservices, usingAnsible, shell and python scripts.
• Experience withRundeckin automating our deployment using Chef creating a job.
• Installed and configured ISCSI Utility on Red Hat Enterprise Linux/Centos 6.4 server for Network Attached Storage.
• Setup a domain and Active directory on Windows 2008 server. Installed and configure samba server On Solaris 10 and Centos 6.4 server and mapping to windows 2008 server.
• Configure apache web server on Solaris 10: install and configure samba server for quick publishing using third-party web page maker.
• Install and configured LAMP on RHEL/Centos servers.
• Experienced on configuring and installing VMware (Virtualization).
• Created virtual machine snapshots using VmwarevSphere5.0.
• Performedvirtual machine warevSphere installation, configuration and firmware updates.
• Managing VM’s and ESXi hosts by using vSphere Client, Putty and Web Access and installing the VMware Tools on the VM’s.
• Have average experience with chef configuration manager on RHEL/centos servers.
• Worked on Installation/Configuration/Administrated VMware ESXi 5.1/5.5 & 6.0 and migrated existing servers into VMware Infrastructure
• Perform security administration functions (maintaining users, groups, IDs, and passwords) onFreeBSDsystems.
• Implement and oversee the installation and configuration of variousFreeBSDand CentOS servers.
• Installed, Deployed Red Hat Enterprise Linux 6.x/7.x, CentOS and installation of packages and patches for Red Hat Linux Servers.
• Created the file systems using Red Hat volume manager and performing the health check on regular basis for all Linux servers.
• CreatedDockerimages using spotify Maven Plugin, for deployment ofmicroservices.
• Configured and monitored distributed and multi-platform servers using Nagios.
• Understanding of secure-cloud configuration, (CloudTrail, AWS Config), cloud-security technologies (VPC, Security Groups, etc.) and cloud-permission systems (IAM).
• SDN, NFV, OpenStack, VM and Docker Containers deployments and management such kubernetes and docker swarm
• Implementation of cloud services IaaS,PaaSandSaaSwhich include OpenStack, Docker and OpenShift.
• AWS and Openstack to provision new machines for clients. S3 Storage Services on AWS.
• Implementing a Continuous Delivery framework using Jenkins, Chef, Maven, Nexus & puppet in Linux environment.
• GitAdministrator and Familiar in branching, tagging and maintaining the version across the environments using SCM tools like Subversion (SVN), CVS,GITand on UNIX and Windows environment.
• Performed all necessary day-to-day Subversion/GITsupport for different projects
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.
• Configuring the Docker containers and creating Docker files for different environments.
• Integrated Docker container orchestration framework usingKubernetesby creating pods, configMaps, deployments.
• Worked on rolling back to an earlier deployment when instability happens usingKubernetes
• Worked on managing different components and the entire stack usingKubernetes.
• AWS Cloud management and Chef Automation.
• Provisioned Linux and Windows VM's onKVMHypervisor and Monitor them.
• Migrated applications to the AWS cloud
• Independently reviewed system requirements and business processes which involvedcodeing, testing, debugging and implemented software solutions
• Scripting in multiple languages on UNIX, LINUX and Windows - Batch, Shell and Python script etc.

Confidential, St. Louis, MO

Linux/Unix Systems Engineer

Responsibilities:

• Installation and configuration of Red Hat Enterprise Linux server 3.0/4.0/5.0 and Sun Solaris 9/10.
• Automation of jobs using Perl and Shell scripting. Automated patching efforts with custom scripts.
• 24/7 support for on-call on RHEL and Solaris environments.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ on RedHat Linux severs.
• Worked with variety of volume managers such as ZFS, LVM, ZFS, Veritas Volume Manager, etc for filesystem management
• Worked on VMware ESX clusters to build RHEL 4, 5 containers
• Created and worked with Solaris Zones and LDOMs
• Build server deployment on AWS Cloud (EC2) servers with help of DevOps tools like Puppet.
• Responsible for distributed applications across hybrid AWS and physical data centers.
• Configure and maintain stress server in different geographical location and provide setup in every release to perform stress testing.
• Expert in security remediations for Unix servers - turning off services, patching, changes in configuration
• Installed and configured monitoring tools BMC Petrol and nagios for monitoring the network bandwidth and the hard drives status.
• Automated server building using Puppet, Chef, Kickstart and Jumpstart.
• Automated post server build QA process by writing shell scripts
• Install and configureUbuntu, Centos on remote servers and Desktop servers.
• Production support and troubleshooting for dev, UAT and Prod servers and participation in on-call duties
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Redhat Cluster Server in Linux environment.
• Troubleshooting production servers with IPMI tool to connect over SOL.
• Configured system imaging tools Clonezilla and System Imager for data center migration.
• Configured yum repository server for installing packages from a centralized server.
• Configured Oracle RAC multimode servers mes, extended logical volumes for file system growth using Logical Volume Manager (LVM) commands.
• Creating Resource pools and processor sets for zones.
• Installation and configuration of Solaris Zones and LDOMs.
• Coordinating with Tivoli team for setting automated alerts which include OS related alerts and Application alerts.
• Administration and Troubleshooting Solaris servers running business critical application & Websphere 5.1/6.1 applications.
• Management of user accounts and groups according to the security needs.
• Upgrading Solaris kernel and applying necessary patches.
• Performing online addition of LUNS to the servers for provisioning disk space, and resizing file systems.
• Upgrading service controller firmware on T2000/T5220 servers.
• Responsible for installing, configuring, maintaining, design, development, implementation, and support on IBMAIX 5.1/5.2/5.3/6.1/7.1 Operating System Environments.
• System Administration and performance monitoring tasks onAIXservers.
• AIXOperating System Migration - Have migrated fromAIX5.3 toAIX6.1.
• Installing BMC package for data collection, Tivoli package for monitoring, ESM package for monitoring configuration files and troubleshooting.
• Involved in data center migration, SAN switch and SAN storage migration.
• Monitoring system resources, disk usage, scheduling backups and restore.
• Performed root cause analysis of technical issues.
• Experience installing and configuring SSH (Secure Shell) encryption in order to access securely onUbuntuand Red hatLinux.
• Configuring and troubleshooting NFS, FTP and SSH for users.

Confidential, St. Louis, MO

Unix Systems Admin

Responsibilities:

• Tier 1-3 support for Production environment
• Data center migration and consolidation activites
• Solid understanding of Linux shell and Perl scripting, UNIX, Windows, build and release engineering principles
• Posting the build on time & following it up the testing team on posted builds until the specified release goes LIVE
• VERITAS Volume Manager 4.x/5.x and Solstice Disk suite (SVM) RAID configuration, troubleshooting, maintenance, disk management & space allocation etc.
• MigratedSunServer (Around 100) and HP Servers (Around 30) Lift and Shift from Old Data Center to New Data Center on a Weekly Basis.
• Installation Configuration troubleshooting & maintenance of VERITAS cluster.
• REDHAT Enterprise Linux 3, 4 Installation on various servers using Kick start and configuration & support for various applications run on Linux environment.
• Exclusively done Oracle Migration from 4 Node Cluster to 4 Cluster and also 6 Node to 2 Node.
• Performed SRT testing before bring the Cluster into the Production.
• Migrated VERITAS Disk Groups using Deport and Import Techniques.
• Day to day duties for UNIX/Linux server Maintenance and Support to developer's team for their issues with application, tuning, troubleshooting, software running on UNIX/Linux Servers.
• Disaster Recovery operation setup & checkup at contracting facility.
• Performed e in installing, configuring and trouble -Shooting web servers like IBM HTTP Web Server, Apache Web Server, WebSphere Application Servers, and Samba Server on Linux (Redhat & CentOS).
• Automation scripts for weekly and monthly backups in Perl and shell.
• UNIX Server monitoring for maximum availability using BMC patrol and other monitoring tools and taking steps to keep servers up and running under 24x7 environment for maximum uptime.
• 24x7 support for the UNIX servers. Rotating on call pager responsibilities for Production environment.

Confidential

Unix Systems Administrator

Responsibilities:

• Provide 24x7 System Administration support for Red Hat Linux 3.x, 4.xservers and resolved trouble tickets on shift rotation basis.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Provide support of building the server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
• Managing Compaq and Linux workstations and servers.
• Installation of patches and other software packages
• Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• Monitoring system performance, tune-up kernel parameter, adding /removing /administering hosts, users, disks on DNS / NIS domain,
• Configuration of Hardware and Software RAID on Digital & Sun Servers
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Installation and configuration of Oracle 7.x/8.x.
• Implementing NFS, DNS and NIS under SUN.
• Performing administration of the Domain Name Server and configuration of the Database Files.
• Writing Bash shell scripts for getting information about various Linux servers
• Installation and Configuration Sendmail Utility on Sun UNIX Servers.
• Administering NFS Mounts.
• Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities
• Monitoring overall system performance, performed user management, system updates and disk & storage management
• Performing OS upgrades and Patch loading as and when required.
• Backing up and restoring files across the network
• Writing Technical documentation for various projects and worked with Technical writer
• Deploying the EAR and WAR archives into WebLogic and Apache Servers.
• Configuring and Maintaining Apache web servers for Release Management Team’s internal use.
• Turnover documentation monitors status of actual production turnover.