Sidharth Polakam

Sr. Linux/Unix Engineer

acz90d@r.postjobfree.com

Ph: 470-***-****

PROFESSIONAL SUMMARY:

Over 7 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 tool Puppet that included the installation and configuration of the Puppet master, 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.

Macy’s Atlanta GA Sep 2015 to Present

Role: Sr. Linux Engineer with DevOps

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.

Setup, configure and troubleshooting TCP/IP, DHCP, DNS, NFS, SSH, CIFS and SAMBA on Multiplatform (Solaris 10 and RHEL/centos)

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 Systems and VERITAS Cluster Server.

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.

Experience on working with Ansible

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).

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

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.

Created Docker images using spotify Maven Plugin, for deployment of microservices.

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).

Experience with threat modeling, especially for web application and web APIs.

Implementing a Continuous Delivery framework using Jenkins, Chef, Maven, Nexus & puppet in Linux environment.

Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure.

Configuring the Docker containers and creating Docker files for different environments.

AWS Cloud management and Chef Automation.

Configured Elastic Load Balancers (ELB) with EC2 Autoscalling groups

Created monitors, alarms and notifications for EC2 hosts using CloudWatch

Migrated applications to the AWS cloud

Azure Automation (cloud and on-premises) solution development for Microsoft POC engagements

Performed Mechanization Puppet and Chef.

Scripting in multiple languages on UNIX, LINUX and Windows - Batch, Shell and Python script etc.

Scottrade St. Louis, MO Sep 2013 – Aug 2015

Role: Linux Systems Engineer

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

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.

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.

Configuring and troubleshooting NFS, FTP and SSH for users.

Fontbonne University St. Louis, MO Nov 2010 to Aug 2013

Role: Unix Systems Admin

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.

Migrated Sun Server (Around 1000) and HP Servers (Around 300) 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.

Performed Mechanization Puppet and Chef.

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.

Patni Computers, India Jul 2009 – Oct 2010

Role: Unix Systems Administrator

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.

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