SUMMARY

• Over 7 years of IT experience specialized in UNIX System Administration working on server - based operating system; kernel configurations on RedHat Linux, CentOS, Debian 7, Ubuntu in a DevOps Environment with CI/CD as a Iterative process.
• Expertise in package management using RedHat RPM, YUM used in several Linux distributions such as RedHat Enterprise Linux, SUSE Linux Enterprises and Fedora.
• Experience in maintaining LDAP, FTP, DNS,DHCP and NFS services on Windows and RedHat Enterprise Linux in Development Environments
• Experience in implementing and configuring of Volume Management by using Veritas Volume Manager (VxVM), Solaris Volume Manager (SVM) using mirroring the root Volume Group, and Logical Volume Manager (LVM) with various RAIDS in Linux and Windows Operating Systems including Windows, Windows Server 2008 and 2012 understanding of server technology including RAID .
• Experience in Performing System Administration, System Builds, Server builds, Installs, Upgrades, Migration, Troubleshooting, Disaster Recovery, Performance Monitoringand Fine-tuning on UNIX RedHat Linux Systems.
• Expertise in using computer applications and writing scripting like Shell, Python, Ruby, Perl, Python, JavaScript and XML for deployment of simple Java applications on bare servers .
• Experience in AWS deploying instances like RedHat, Ubuntu, CentOS and Windows.
• Experience in designing and deploying AWS Solutions using EC2, S3, EBS, Elastic Load Balancer (ELB), auto scaling groups and integrated it with Puppet code using API.
• Experienced in evaluating Chef and Puppet framework and tools to automate the cloud deployment and operations and worked for infrastructure needs as well as development of Cookbooks and processes evolving from the use of Chef along with creating resources in AWS.
• Experience in managing Amazon Web Services like EC2, S3 bucket, RDS, EBS, ELB, Auto-Scaling, AMI, IAM through AWS Console and Integrated it with Puppet Code using API.
• Scaling, AMI, IAM through AWS Console and Integrated it with Puppet code using API.
• Experienced in evaluating Chef and Puppet framework and tools to automate the cloud deployment and operations and worked for Infrastructure needs as well as development of Cookbooks and processes evolving from the use of Chef along with creating resources in AWS.
• Skilled in managing On-site OS/Applications/Services/Packages using Chef along with AWS for EC2/S3/Route53 & ELB with Chef Cookbooks.
• Skilled in Refactoring existing Opscode Chef Automation code and Test Chef Cookbook modifications on cloud instances in AWS and using Test Kitchen and Chef Spec.
• Experience working with Puppet Enterprise and Puppet Open Source. Installed, configured, upgraded and managed Puppet Master, Agents & Databases. Integration of Puppet with Apache and Passenger.
• Experience in managing virtual instances and disks using Puppet and Deployed Puppet, Puppet Dashboard for configuration management to existing infrastructure.
• Experienced in Setup, configure and deploy VMware-based systems for high-availability and efficiency, including vCenter, vSphere, and ESXi v5.x/6.x, Horizon View VDI.
• Possessed hands on expertise in troubleshooting day to day SAN Storage and host related issues quickly.Site Recovery Manager, vMotion, Physical to Virtual Migration and Managing SAN data stores with iSCSI, NFS & FC.
• Experienced in building and maintaining Docker and Vagrant infrastructure in agile environment.
• Expertise in configuring Alert mechanisms with Nagios, Splunk, error logging, performance monitoring.
• Extensive experience of deploying code to various application servers like JBoss, Apache Tomcat Web Server, Oracle WebLogic and IBM WebSphere.
• Efficiently wrote stop/start scripts for the JBoss application instances and performed JBoss upgrades and patching as they come from RedHat with the special procedures as required for security.
• Automated WAR deployment procedure in production environment running on JBoss EAP 6.4 using Perl script.
• Experience working on End to End automation for all build and deployments using Jenkins/Hudson by installing, configuring and maintaining for the purpose of continuous integration (CI)
• Experienced with JIRA tracking tool and managing all the bugs and changes into a production environment and created Subversion Hooks for JIRA integration and enforcing naming conversions.
• Proficient performing updates stories in JIRA and documented all the Splunk Installation, Configuration and operations support procedure on WIKI.
• Experience in working with Tracking Tools like JIRA, BMC Remedy, Bugzilla, Crucible, IBM Clear Quest
• Experience with source control tools like SVN & GIT.
• Experience in Deploying, computing and providing object storage in OpenStack core services like Swift, Keystone, Nova, Cinder and Glance. Involved in canonical implementation of OpenStack Dashboard through Horizon.
• Efficiency in maintaining and executed build scripts using Maven by coordinating with development and quality assurance teams.
• Experience in RDBMSlike Oracle, My SQL and Cassandra (NO SQL) DBMS, and tools such as SQL Server 2008/2012/2014 , MySQL, MongoDB
• Expertise in installation, configuration and maintenance of IBM WebSphere application server, IBM HTTP, Apache Web Servers and IIS on AIX, Solaris, Linux and Windows platforms.
• Expertise in working with LAN/WAN, firewalls and UNIX passwords and DNS/DHCP generation from a single host file routing for Internet and Intranet connectivity using different protocols like TCP/IP, DHCP & SSH.
• Analyzing end-to-end TCP/IP protocol traces to identify network connectivity issues.
• Experience in configuration, administrating, maintaining of Apache Httpd, DHCP, NIS, NIS+, DNS, SAMBA, NFS, SMTP, LDAP, SQUID, Postfix, Send mail, FTP, Remote Access, Security Management & Security troubleshooting skills.
• Installed, configured, logical and physical design, backup/restore, core services configuration and support of JBoss EAP 5.2/6.4, WebLogic 11g, Apache 2.2 in Dev, Stage, Prod and deserter recovery environments.
• Responsible for Designing SAN architecture, monitoring SAN disk.
• Provided continuous 24/7 primary on-call support for all our server applications and systems.
• Willing to learn New Technologies with Positive attitude.

TECHNICAL SKILLS

Operating Systems: RHEL/CentOS 5.x/6.x/7, Ubuntu/Debian/Fedora, Windows Server 2003/2008/2012 , Sun Solaris 7/8/9/10

Build/Automation Tools: Puppet, Chef, Ant, Maven, Hudson & Bamboo, Jenkins.

Languages: Python, Shell, Bash, Perl, Ruby scripting

Databases: MySql, SQL Server, Cassandra, MongoDB PostgreSQL

Web/App Server: Apache, Tomcat, IIS, HIS, WebSphere Application Server, JBoss

Bug Tracking Tools: JIRA, Crucible, Rally, Remedy Bugzilla and IBM Clear Quest, HP Quality Center.

Version Control Tools: GIT, Tortoise SVN, Subversion, Visual SVN

Web Technologies/Programing Languages: Servlets, Python, JSP, JDBC, XML, HTML, Java Script, C, C++, .Net, Ruby, Perl scripting, Shell scripting.

PROFESSIONAL EXPERIENCE

Confidential, PALO ALTO, CA

Windows Admin/Cloud Engineer/DevOps Engineer

Responsibilities:

• Wrote massive Chef code base to make Cookbooks composable and testable, and to facilitate the migration from Ubuntu to CentOS
• Wrote wrapper scripts to automation and deployment of Cookbooks on nodes and running the Chef client on them in a Chef-Solo environmentand Converting production support scripts to Chef recipes
• Used to write an install script in Ruby using all of the extra helper functions from Chef
• Develop automation code using Opscode Chef and Python to build OpenStack environments autonomously
• Creating security groups on the Amazon EC2 instances in Production Environment.
• Created monitors, alarms and notifications for EC2 hosts using Cloud watch and Utilized Cloud watch to monitor resources such as EC2, CPU memory, Amazon to design high availability applications on AWS across availability zones
• Configured S3 to host static web content, S3 versioning and lifecycle policies to and backup files and archive files in Glacier
• Creating from scratch a new continuous integration stack for a web application based on Docker and Jenkins, allowing transition from dev stations to test servers easily and seamlessly.
• Build scripts using ANT and MAVEN build tools in Jenkins and BuildForge to move from one environment to other environments.
• Configured and maintained new VM’s and Installed Microsoft Windows 2008/2003 Servers, managing VM’s and ESX servers by using VIC, and Web Access and installing the VMware Tools on the VM.
• Build, Maintain and backup the VMware images bi-weekly on theLinux RedHat Development server.
• Installation, configuration and deployment of VMware products such as VMware Workstation, VMware converter, VMware View, VCB in virtual environment
• Actively involved in PSM VMware vSphere4/ESX4, Win2003/2008R2 Server deployment in DR environment
• Installed/Configured/Administrated VMware ESXi 5.1/5.5 & 6.0 and migrated existing servers into VMware Infrastructure using vMotion.
• Performed configuration, Storage of VMotion, virtual switch, VLAN in virtual center and configured ESX clusters with HA and DRS.
• Installed, upgraded, patched and configured Linux servers using RedHat Enterprise Linux 5.x/6.x.
• Upgraded RedHat Linux servers from 5.x to 6.x and AIX from 5.2 to 5.3
• Configured RedHat Cluster Nodes and verified the daily health check on the Cluster Nodes for any legacy applications.
• Writing, updating scripts on the build machine (RedHat) for doing both nightly builds.
• Creating Docker containers to simulate DNS server.
• Helped deliver Docker container deployment mechanism to decrease cost of teams building their own continuous delivery pipeline
• Worked on Docker container snapshots, attaching to a running container, removing images, managing directory structures and managing containers.
• Responsible for design and maintenance of the Subversion/GIT Repositories, views, and the access control strategies.
• Installed, configured, logical and physical design, backup/restore, core services configuration and support of JBoss EAP 5.2/6.4, WebLogic 11g, Apache 2.2 in Dev, Stage, Prod and deserter recovery environments.
• Worked on troubleshooting application servers Tomcat and JBoss, VPN Technologies (OpenVPN, Poptop etc).
• Did troubleshooting of build and deploy problems, used JIRA for problem tracking.
• Wrote Database query log processing inPython
• Plan, organize and execute application migrating from Windows R2 Server including infrastructure server like AD,DNS, DHCP various IIS, SQL, Oracle
• Provided level one support for build troubleshooting and production issues.

Confidential, ALBANY, NY

Linux Admin/Cloud Admin/DevOps Engineer

Responsibilities:

• Deployed and monitored scalable infrastructure on Amazon web services (AWS) & configuration management using Puppet.
• Created Puppet manifests and modules to automate system operations and assigning Classes to Nodes with Hiera
• Installation and setting up Git server and repos and created hooks to trigger Jenkins projects to do automated deployment of Puppet modules to Puppet server and then trigger Puppet agents on the nodes
• Implemented GitLab for version control of Puppet modules and process documentation
• Responsible for Deployment, Automation - Puppet, Hiera, Custom Puppet modules, Ruby
• Coded Puppet modules to auto create system users, install package and start services and also to manage Docker containers on all master/server and client/agent nodes of the cluster environment
• Created & deployed various tasks by using Ansible playbook & Puppet manifest
• Setup and installation of Jenkins server and created projects to test and deploy Puppet modules to Puppet server and agents and also to trigger maven builds and deploy microservices onto mesos cluster environment with Marathon Framework running on AWS EC2 instances
• Designed, installed and implementation of Nagios in a multi-datacenter environment for monitoring the network bandwidth and the hard drives status.
• Involved with architecture team for installing and configuring High Availability for Splunk application.
• Worked with our release engineering team in maintaining our code base with Subversion. Realizing some of the limitations in Subversion, we eventually ported all of our repositories to Git.
• Installation, Configuration and administration of VMware and performed Data Center Migration of Physical Servers to Virtual Servers (P2V) Using VMWare converter and Double-Take Move.
• Involved in Setup and Refine KickStart for new RedHat Releases.
• Performed automated installations of Operating System using KickStart for Linux and Configured RedHat KickStart for installing multiple production servers.
• Logged events from forced crash dumps and troubleshoot server issues.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Configured YUM repository server for installing packages from a centralized server.
• Installed Fuse to mount the keys on every Debian/Linux Production Server for password-less authentication.
• Used Shell/Perl scripts to automate the Build and Release process
• Automating manual processes by developing tools and services via programming languages such as Powershell Shell Scripting, C#, Python, SQL.

Confidential, DALLAS, TX

Systems Engineer

Responsibilities:

• Installed/Configured RedHat Linux cluster 5x version and configuring the cluster resources.
• Set up and administer user and groups accounts, setting permissions for users in RHEL.
• Build and installed multiple Linux machines.
• Creation of KickStart images for the different version of RedHat Linux Operating system like 5.x & 6.x
• Provided management of system process in areas like boot process, startup and system shutdown.
• Install, configure, maintain and administer Linux/UNIX operating systems and components.
• Created the filesystems using RedHat volume manager and performing the health checks on regular basis for all Linux serves in the environment.
• Deploying the RedHat Linux Enterprise server as like existing versions 5.x, 6.x versions
• Upgrading the kernel in all the RedHat Linux servers and creating initrd image to boot from the Upgraded kernel.
• Worked with the application team to resolve the issues post migration of RedHat Linux servers from 4.x version.
• Storage mapping on RedHat Linux and create the volume group, filesystems using Logical Volume Manager
• Adding storage to the cluster disks and increasing/decreasing the filesystem in RHEL.
• Scanning the newly assigned LUNs to the serves and assigning them to volume group and increasing the filesystem using RedHat volume manager
• Mounting & unmounting the netapp storage LUNs to the RedHat Linux servers and troubleshooting the issues encountered.
• System and Application troubleshooting and other related issues.
• Responsible for engineering, Design, and administration of AIX/Linux operating systems.
• Manage complex AIX/Linux/VMware environments running latest power technologies such as LPARs, Micro Partitioning and Virtual I/O.
• Installation/Configuration of ESXi 3.5, 4.x servers and applying security patches to the ESXi servers using update manager.
• Working on SAN storage on ESXi servers and assigning the LUNs to the Virtual Machines running on the ESXi server.
• Managing the ESXi servers using the Vsphere client and Vcenter for managing the multiple ESXi servers
• Building the RedHat Linux server in VMware ESXi client through Vsphere client
• Planned and executed packages and updates installations necessary for optimal system performance.
• Diagnosed and resolved problems associated with DNS, DHCP, VPN, NFS, and Apache.
• Written shell scripts to apply the Integration label to all the files which needs manual labeling of files.
• Wrote shell script to setup cron job for backup of databases and crucial system tables, nightly batch jobs for data transfer.
• Monitoring and maintaining Real Application cluster (RAC) DB's for their Optimal Performance and trying to ensure 100% availability of the DB's.
• Creating the filesystems and RAW logical volumes for the Oracle RAC based on the requirement
• Performed Vup 5.0, Sybase 11.5.1, Perl Scripting, NIS, NFS, LDAP server, WebLogic, Apache Tomcat and EMC Storage SAN.
• Creation of Fence devices in the cluster, Creation Failover domains for the cluster and Flipover/Failover test in between the nodes in the cluster
• Creating the VM shell and pushing the operating system using the KickStart server.
• Working with VMware 4.0, extensive creation and management of virtual servers and managing resources. Addition of data stores and upgrading the VMware box to 5.0.
• Installed and Configured SAMBA Server in Linux for accessing the shared files from the windows environment remotely.
• Configuration of NFS Server NFS Client for disk sharing to take backup
• Setup and managed user accounts, and changed user attributes based on users requests, and troubleshoot login issue by configuring NFS/NIS settings
• Troubleshoot and resolve issues related to WAN, LAN, V-LAN, VPN, firewall and operating system issues.

Confidential

Linux Systems Administrator

Responsibilities:

• Involved in YUM configuration & package installation through YUM.
• Installation of RHEL and Configuration and troubleshooting for RedHat Linux.
• InstallingandconfiguringRUNLEVELS,DNS,DHCP, SAMBA, APACHE,SENDMAIL, FTP,SQUID, VeritasVolumeManager, RAID and TELNET.
• Handled troubleshooting issues like boating, RPM packages, User management and backup.
• Involved in IP bonding for load balancing and fail over, Firewall, SELINUX.
• Hosting and securing web pages using Apache (httpd) web server and ssl.
• Managing groups and user accounts assigned permissions to users.
• Installing and configuring the DNS, DHCP servers and assigning IP addresses to client hosts.
• Integrating to Linux domain and windows clients using Samba server.
• Manage and maintaining Squid Proxy Server, Configuring and implementing Bind 9, Web servers (APACHE) and virtual hosting
• Configuring and implementing LINUX Kernel re-compilation and Implementing file integrity check tools like Tripwire.
• Involved in Creating, deploying and managing Linux and windows VM using RedHat Enterprise Virtualization Manager, which includes moving and migrating VM from one cluster to another cluster or within the same cluster.
• ConfiguredWinbindon allLinuxworkstations which enables all theLinuxusers to be authenticated on Microsoft Windows 2000Active Directory Server.
• Installed and configured RedHat Cluster with GFS2 file systems. Managed the ext3 and ext4 file systems using Logical Volume Manager LVM
• Involved in resizing ext3 filesystem using LVM without downtime
• Installed and configured ESXi 5.0, 5.1 Servers on Blade servers.
• Involved in Creating Virtual machines, Creation of templates from VMs and Creation of VMs from templates.
• Experience with VMware vCenter Server 5.0 and ESXi hosts, with both RedHat Linux and Windows Server 2008 guest installations.
• Performing VMware crash/error analysis, Root cause Analysis, Coordinate Post Problem Analysis and Trend Analysis.
• Setting up Monitoring environment for all production and development servers at different sites which included installation and configuration ofnew servers addition of new hosts and services to them.
• Taking care of CA tickets related to various UNIX issues. Troubleshooting issues with live production Linux servers.
• Installing & configuring file servers like NFS & FTP for remote sites.
• Working on Internal tickets those included providing permission on game modules, user access on specific servers & stacks,
• Creating user accounts on application servers & internal application tools, providing access to files on file servers.