PROFESSIONAL SUMMARY:

• Highly Proficient with 8 years of experience in IT industry which incorporates Linux Administrator, System Administrator build/Release Engineer, Automating Software Configuration Management(SCM) and DevOps.
• Designed, configured and maintained public/private cloud infrastructures utilizing Amazon Web Services (AWS) including VPC, EC2, Elastic Load Balancer, Elastic Container Service (Docker Container), S3, Elastic Beanstalk, Cloud Front, Elastic Filesystem, RDS, Dynamo DB, Direct Connect, Route53, Cloud Watch, IAM, EMR, RedShift.
• Experience in AWS Deployment services such as AWS Cloud formation, Terraform and AWS Elastic Beanstalk to the quick and efficient deployment of application infrastructure.
• Managed and coordinated with teams of DevOps engineers for infrastructure support on AWS cloud. Creating cloud formation scripts for hosting software on AWS cloud. Automating the installation of software through PowerShell scripts. Also, responsible in implementing end to end automation using release and deploy tools for Test and Production pipelines.
• Experience in working with OpenStack services such as Nova and Glance, Swift, Keystone, Heat, and Ceilometer.
• Experience with Pivotal Cloud Foundry (PCF) architecture and design, troubleshooting issues with platform components, and developing global/multi - regional deployment models and patterns for large scale developments/deployments on Cloud Foundry and AWS.
• Worked with Spinnaker to deploy across multi-cloud environment like Microsoft AZURE, AWS EC2 and Google Kubernetes Engine.
• Experience on Azure Fabric, Micro services, IoT & Docker containers in Azure.
• Experience working with writing Amazon IAM policies for creating custom users and groups for developers working from different geographical locations.
• Experience with container -based deployments using Docker , working with Docker images , Docker Hub and Docker - registries and Kubernetes .
• Installed and configured Kubernetes for Orchestration of Docker Images and Cluster Container management on AWS using Kubernetes Operations (KOPS).
• Experience working with the Docker ecosystem with a bunch of open source tool like Docker machine, Docker Compose, Docker Swarm.
• Architected and implemented automated cloud infrastructure using Chef and Ansible, on multi platforms on AWS Cloud Servers.
• Experience with setting up Chef Infra , Boot strapping nodes, creating and uploading recipes, node convergence in Chef SCM .
• Hands on experience in various Puppet objects such as Puppet resource, Puppet class, Puppet Manifest, Puppet modules and Puppet Forge.
• Vast experience in working with Puppet products such as Puppet dashboard, Puppet Hiera, Puppet Factor and Puppet Geppetto.
• Implemented Chef Knife and Cookbooks by Ruby scripts for Deployment on internal Data Centre Server and reused same Chef Recipes to create a Deployment directly into EC2 instances.
• Expertise in Terraform for building, changing, versioning infrastructure and Collaborate the automation of AWS Infrastructure via Terraform and Jenkins .
• Production experience in large environments using configuration management tools like Chef and Puppet supporting Chef Environment with many servers and involved in developing manifests and developed Chef Cookbooks to manage system configuration.
• Experience with Ansible Playbooks with Python SSH as the Wrapper to Manage Configuration of AWS Nodes.
• Experience working with Chef Client and Puppet Agent for managing the total configuration of nodes.
• Experience in configure automated application deployment process through uDeploy (urban Deploy) and resolve any deployment problems.
• Hands on experience on implementing DevOps life cycles using GIT, Bit bucket, Jenkins, Hudson, Bamboo for continuous integration, ANT, Maven for continuous deployment and Chef, SVN, Puppet, CMS, Ansible & Salt Stack for configuration management, Docker and Kubernetes as container technologies, and Involved in migrations from on-premises to cloud platforms using AWS, Azure, OpenStack (Rackspace).
• Extensively worked on Jenkins and Bamboo for continuous integration and for End to End automation for all build and deployments.
• Implemented and maintained CI environments using Jenkins to perform Builds, Deployments production rollouts, Staging, defect tracking (JIRA), and service delivery over web/app servers like JBoss, Tomcat, WebLogic, WebSphere.
• Used Git for source code version control and integrated with Jenkins for CI/CD pipeline , code quality tracking and user management with build tools Maven and Ant .
• Experienced in Branching , Merging , Tagging and maintaining the version across the environments using SCM tools like GIT and Subversion (SVN) on Linux platforms .
• Configured and setup ELK stack (Elasticsearch, Logstash and Kibana) to collect, search and analyze log files across the servers and monitored the servers using Cloud Watch and ELK for Network and Log Monitoring.
• Experience in Virtualization technologies VMWare , Virtual box , Vagrant for creating virtual machines and provisioning environments.
• Worked on the scripting languages like Shell(Bash), Python, Ruby and Perl for automation.
• Experience in using Virtual box for multiple operating systems on one desktop and cross platform guests and hosts including Windows, Linux and Solaris.
• Experience with Linux Administration, Cloud Infrastructure management, Software Configuration Management.
• Expertise in LINUX/UNIX system builds, administration, Installations, Upgrades, Troubleshooting on different distributions such as Ubuntu, CentOS, Red Hat.

TECHNICAL SKILLS:

Build Tools: Ant, Maven, Gradle

Configuration Management Tools: Chef, Puppet, Terraform, Ansible

Monitoring Tools: Nagios, App dynamics, Splunk, ELK, CloudWatch.

CI/CD Tools: Jenkins, Bamboo, Code ship, Visual studio.

CI Tools: Hudson, Jenkins and Build Forge.

Container Tools: Docker, Kubernetes.

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

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

Scripting and programming: Shell/Bash, Java Script, Perl, Python, JSON, C, C++, Java.

Databases: MySQL, MS Access, Oracle 9i/10g/11g, DB2, NoSQL (MongoDB, DynamoDB).

Tools: /IDE: Putty, VMware, Eclipse IDE, Android Studio, SVN.

Web Dev Technologies: HTML, HTML5, CSS, CSS3, JQuery, XML, XSL, XSLT, JavaScript, JQuery, PHP, Bootstrap, WordPress.

Bug Tracking Tools: JIRA, ServiceNow, Junit, Bugzilla, Remedy, Clear Quest.

Cloud Technologies: AWS (Amazon Web Services), Microsoft Azure, Rackspace (OpenStack), Google cloud.

Operating Systems: Windows NT/2000/2003/XP/VISTA/7/8/10, Mac, Ubuntu, Linux (Red Hat 4/5/6/7).

PROFESSIONAL EXPERIENCE:

Confidential, Richmond, VA

Sr. Cloud & DevOps Engineer

Responsibilities:

• Designed AWS Cloud Formation templates for creating custom sized VPC, subnets, and NAT to ensure successful deployment of Web applications. Used Cloud Front to deliver content from AWS edge locations to users; allowing further reduction of load on front-end servers. Managed and analyzed the petabyte-scalable data using AWS Redshift cluster.
• Created Python scripts for completely automating AWS services which includes web servers, ELB, Cloud Front distribution, database, EC2 and database security groups and application configuration, for creating stacks, single servers, or joining the web-servers to stacks.
• Orchestrated the end to end infrastructure for disaster recovery, cost saving and patching purposes using the AWS cloud formation scripts. Utilized AWS Lambda to run without using servers and prompt to run the code using S3 and SNS.
• Configured and Provisioned EC2 instances (Linux Servers) using Terraform Scripts and maintained Scalability using AWS Elastic Load Balancer (ELB) to control traffic on EC2 instances and perform balance across the instances in multiple availability zones.
• Employed AWS Beanstalk for deploying and scaling web applications and services developed with Java, PHP, Node.js, Python, Ruby, and Docker on familiar servers such as Apache, Nginx and IIS.
• Installed and used Chef Server Enterprise on premise, workstation and bootstrapped the nodes using knife and automated by writing Chef Recipes and Cookbooks with test-kitchen/chef spec. Managed On-site Operating Systems, apps, packages and services using Chef as well as AWS for EC2, S3, Route53 & ELB with Chef Cookbooks.
• Configured EC2 instances by writing Terraform templates, Chef cookbooks, recipes and pushed them on to Chef server .
• Migrated production infrastructure into an AWS VPC utilizing AWS Cloud formation , Code Deploy and Chef. Also implemented rapid-provisioning and life-cycle management for Ubuntu Linux using Amazon EC2, Chef, and custom Ruby/Bash scripts.
• Established OpenStack project Infrastructure Program and served as tech lead.
• Responsible for OpenStack project core infrastructure including code review, continuous integration systems, and developer tools and O p en S t a c k M ul ti node I n st a ll a ti on, C o nf i g ura t i on a nd A dm i ni st ra t ion.
• Managed Ansible Playbooks with Ansible roles . Created inventory in Ansible for automating the continuous deployment.
• Configured the servers, deployed software, and orchestrated continuous deployments or zero downtime rolling updates using Ansible.
• Automated the installation of ELK (Elasticsearch, Logstash and Kibana) agent (file beat) with Ansible playbooks and used Ansible to manage Web applications, Environment configuration Files, Users, Mount points and Packages.
• Employed Chef and Ansible for assistance in building automation, used Ansible for deployment of Security tools, Nagios agents, Nagios Servers for applications in different environments.
• Developed automation scripting in Python , Ruby using Ansible to deploy onto webserver ( Apache Tomcat ) and manage Java applications across Linux servers .
• Deployed numerous services like RabbitMQ , Redis , Elasticsearch(ELK) , Aurora DB , Postgres , Spark and data containers in some containerized environments using Docker-compose.
• Created the Docker containers and Docker consoles for managing the application life cycle. Worked on Docker hub, creating Docker images and handled multiple containers as a cluster with Docker Swarm, Weave and Compose for various applications written in Node.js.
• Configured Docker Containers by creating Docker-Compose Files and pushed the Docker-Images onto EC2 instances from Docker-Registry to deploy the applications using both Kubernetes and Docker Swarm .
• Orchestrated Container applications using Open Shift and Kubernetes for container operations in AWS and worked on creation of Kubernetes Pods and used Kubernetes cluster to maintain Services, Load Balancing and Network policies.
• Created and Managed with Kubernetes in all the environments and troubleshooting the issues and errors while deploying Kubernetes Pods and Configured the Kubernetes provider with Terraform which is used to interact with resources supported to create several services such as Config Map, Namespace, Volume, Auto scaler.
• Managed Kubernetes charts using Helm. Created reproducible builds of the Kubernetes applications, managed Kubernetes manifest files and managed releases of Helm packages.
• Incorporated Red Hat Open Shift Container Platform for Docker and Kubernetes and used Kubernetes to manage containerized applications using its nodes, Config Maps, selector, Services and deployed application containers as Pods.
• Installed Jenkins/Plugins for GIT Repository, setup SCM Polling for Immediate Build with Maven and Maven Repository (Nexus Arti factory).
• Deployed custom applications using Chef, executed schema updates with Liquibase and coordinated everything with Jenkins .
• Utilized Jenkins to run a PowerShell script to query the Dimension Data cloud application via RestAPI. that pull the server details from the application and creates a csv file that the user can download from a file server.
• Managed Nexus and MAVEN repositories to download the artifacts for the build and worked on Maven to create artifacts from source code and deploy them in Nexus central repository for internal deployments using uDeploy.
• Integrating GIT into the continuous Integration (CI) environment along with Anthill-Pro, Jenkins, Cruise Control.
• Integrated GIT with Jenkins to automate the code check-out process.
• Configured Apache webserver in the Linux AWS Cloud environment using Chef Automation. Automated Apache-webserver configuration, DB Server configuration, SSSD Configuration, LAMP by writing Ruby Cookbooks in Chef.
• Installed, configured and troubleshooted enterprise-wide Apache web servers and Tomcat applications containers in a large RedHat Linux/CentOS environment.
• Monitored Database Health Connection by using Splunk DB connects health dashboards, Jboss , Apache Tomcat and integrate Service Now with Splunk to consume the alerts from Splunk and Create Service Now tickets.
• Configured and managed an ELK stack, setup the Elasticsearch ELK Stack to collect, search and analyze log files from across the servers and evaluated system logs using ELK software stack.
• Created scripts for system administration using scripting languages like Python, BASH, and Perl for automated processes in managing disk space, deleting old logs, and scripts for Cron jobs.
• Maintained the Red Hat Satellite for infrastructure management to keep Red Hat Enterprise Linux environments and other Red Hat infrastructure running efficiently, properly secured, and compliant with various standards.
• Employed a variety of Linux platforms like Red Hat Linux , Solaris which includes installation, configuration and maintenance of applications on this environment. Also secured Linux servers by hardening the OS using IP-tables, SE-Linux and RK-Hunter.

Environment: AWS, Load Balancers, Lambda, Chef, Ansible, ANT, Maven, Shell, Bash, Python, Linux, Jira, My SQL, Jenkins, Splunk, Docker, Apache Tomcat 7.x, Docker, Virtualization, Kubernetes, Configured plug-ins for Apache HTTP server, Nginx, LDAP, JDK1.7, XML, SVN, Git.

Confidential, Richmond, VA

Sr. Cloud and DevOps Engineer

Responsibilities:

• Created AWS cloud formation templates to create custom-sized VPC, subnets, EC2 instances, ELB, security groups. Worked on tagging standard for proper identification and ownership of EC2 instances and other AWS Services like Cloud Front, CloudWatch, OpsWorks, RDS, ELB, EBS, KMS, Cloud Trail and IAM.
• Ensured successful architecture and deployment of enterprise grade PaaS solutions using Pivotal Cloud Foundry (PCF) as well as proper operation during initial application migration and net new development.
• Implemented Micro-services using Pivotal Cloud Foundry(PCF) platform build upon Spring Boot Services and created workflows on TeamCity for setting up automated pipelines for CI/CD with PCF.
• Experienced with working PCF OAuth2 server & PCF login server to provide identity management.
• Configured deployment of applications using PCF Cloud Controller. Configured PCF nsync, PCF BBS, and PCF Cell Rep to keep applications running.
• Created, monitored and restored Azure SQL database and migrated Microsoft SQL server to Windows Azure SQL database and updated the connection strings .
• Configured Active Directory Federation Services (AD FS) and AD for on-Premise domain, configure Azure VPN for Virtual Network and Creating Azure Backup vault and protecting required VMs to take the VM level backups.
• Created and used XML Web Services (SOAP and WSDL) using VisualStudio.Net, ASP.NET and Integrated Windows Azure Virtual Network with on premise AD and ASP .Net applications.
• Employed Microsoft Azure (Public) Cloud to provide IaaS support to client. Create Virtual Machines through PowerShell Script and Azure Portal . Developed disaster recovery environment using PowerShell from the scratch.
• Created Storage Pool and Stripping of Disk for Azure Virtual Machines. Backup, Configure and Restore Azure Virtual Machine using Azure Backup.
• Managed Azure Subscriptions , Storage Accounts to help customers, managed Virtual Machines and Virtual Networks within Azure by using PowerShell.
• Implemented new Docker Container creation process for each GITHUB branch gets started on Jenkins as Continuous Integration server. Also wrote JSON templates for cloud formation, ruby scripts for chef automation & contribute repos on GITHUB.
• Automated the deployment of Cookbooks on nodes and running the Chef-client on them in a Chef-Solo environment by writing wrapper scripts .
• Involved in testing the Cookbooks using Chef kitchen , Wrote Test cases for testing several Cookbooks in the Environment using Chef Spec, In Spec and customized the changes in Chef Data Bags, Roles and Recipes and deploying the cookbooks, recipes using knife tool from Chef-DK Workstation to Chef-server .
• Performed build automation using Jenkins server, installed and configured Jenkins, configure plugins, job setup, and build pipeline and delivery pipeline views.
• Employed Ansible playbooks to deploy instances and wrote modules in Ansible for integrating with Apache Tomcat and AWS used Ansible playbooks to deploy applications.
• Implemented a Continuous Delivery Framework using Jenkins, Maven & JForge in Linux environment, monitored software, hardware, & middleware updates utilizing technologies like Jenkins, MS Build, TFS Team Explorer.
• Provided continuous automated builds based on polling and post-hook scripts in source control systems (GIT) during the day and periodic scheduled builds overnight to support development needs using Jenkins, Junit, Maven by setting up the Jenkins server and build jobs.
• Build and maintained Docker container clusters managed by Kubernetes Linux, Bash, GIT, Docker . Also, automated compute engine and Docker image builds with Jenkins, Packer and Kubernetes.
• Created private cloud using Kubernetes that supports DEV, TEST, and PROD environments, changing the AWS infrastructure Elastic Beanstalk to Docker with Kubernetes.
• Worked on Maven to create artifacts from source code and deploy them in Nexus central repository for internal deployments using uDeploy and uCode.
• Performed version control through GIT. Written new plugins in Nagios to monitor resources. Worked with implementation team to build and engineer servers on Ubuntu and RHEL Linux.
• Configured Nagios to monitor the IT infrastructure components such as system metrics, applications, servers and network protocols.
• Deployed the java-based packages like. ear and .war on the WebLogic App server by Ruby Scripts, Python Scripts, Perl Scripts, Shell Scripts
• Worked on web servers like Apache and application servers like WebLogic, Tomcat, WebSphere, JBOSS to deploy code. Installed Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux and windows systems.
• Expertise in setting up of JVMs, Clusters, virtual hosts and configured authorization and authentication models using LDAP on Linux servers.
• Extensively used NGINX which can function as a proxy server for email (IMAP, POP3, and SMTP) and a reverse proxy and load balancer for HTTP, TCP, and UDP servers.

Environment: AWS, Azure, PCF, Cloud front, Cloud watch, Chef, Ansible, Shell, Python, Linux, My SQL, Jenkins, Apache Tomcat, Docker, Virtualization, Kubernetes, Nginx, LDAP, SVN, Git, HTTP, TCP, UDP, Linux.

Confidential, Fort Worth, TX

AWS DevOps Engineer

Responsibilities:

• Designed and Deployed a multi-tier application utilizing almost all the main services of the AWS stack (like EC2, S3, RDS, VPC, IAM, ELB, Cloud watch, Route 53, Lambda and Cloud Formation ) focused on high - availability, fault tolerance environment.
• Created Cloud Formation Template for main services like EC2, VPC and S3 for reusing the current environment.
• Created network architecture on AWS VPC , subnets, Internet Gateway, Route Table and NAT Setup.
• Worked with IAM to manage the users and groups using IAM by assigning individual policies and roles to each users and group as per requirements.
• Designed high availability environment for Application servers and database servers on EC2 by using ELB and Auto-scaling.
• Monitored AWS cloud resources and the applications that deployed on AWS by creating new alarm, enable notification service using CloudWatch.
• Deployed and monitored scalable infrastructure on Amazon web services (AWS) & configuration management using puppet .
• Managed Web Applications, Config Files, Data Base, Commands, Users Mount Points, Packages using Puppet.
• Designed, built and coordinate an automated build and release CI/CD process using Jenkins and Puppet on the infrastructure.
• Designed the project workflows/pipelines using Jenkins as CI tool and wrote Python Scripts to automate the build process.
• Performed SVN to GIT/Bit Bucket migration and managed branching strategies using GIT workflow. Managed User access control, Triggers, workflows, hooks, security and repository control in Bit Bucket/GIT.
• Responsible for writing automation scripts like bash, python using Jenkins to push the code from GIT to Nexus.
• Installed Jenkins/Plugins for GIT Repository, Setup SCM Polling for Immediate Build with Maven and Maven Repository (Nexus Artifactory) and Deployed Apps using custom ruby modules through Puppet.
• Integrated GIT into Jenkins to automate the code check-out process. Used Jenkins for automating Builds and Automating Deployments.
• Integrated plugins such as Jenkins parameterized trigger plugin, Jenkins pre-scm-build step, Jenkins SonarQube plugin, Jenkins Matrix Authorization Strategy plugin and Jenkins Build-timeout plugin with Jenkins.
• Proficiency in configuring and managing monitoring tools such as Nagios and Splunk.
• Good knowledge of Splunk architecture and working experience on various components such as indexer, forwarder and search heads.
• Configured Stalking in Nagios for logging purposes. Integrated passive checks with Nagios to monitor services that are asynchronous in nature
• Developed Splunk queries and Splunk dashboards targeted at understanding application performance and capacity analysis.
• Installed and configured Jenkins for Automating Deployments and providing a complete automation solution and maintained build related scripts developed in ANT and shell . Modified build configuration files including Ant's build.xml .
• Worked closely with the development and operations organizations to implement the necessary tools and process to support the automation of builds, deployments , testing and infrastructure using Chef .
• Deployed the code through web application servers like Web Sphere/Web Logic/ Apache Tomcat.
• Created SSL certificates for windows servers and Solaris/Linux Servers.
• Installed and configured of Solaris and Linux servers using JUMPSTART and KICKSTART installation and periodic Patch Upgrading using Live upgrade.

Environment: AWS, ELB, CloudWatch, Chef, Puppet, Ansible, Python, Shell, Linux, Splunk, Nagios, My SQL, Jenkins, Apache Tomcat, Git, Solaris, Jumpstart, Kickstart, Linux.

Confidential

Build and Release Engineer

Responsibilities:

• Engaged in build automation using Jenkins server , Install and configuration of Jenkins , configure plugins, job setup, and build pipeline and delivery pipeline views
• Employed Jenkins and Hudson for Continuous Integration Process. Provided end-user training on Tortoise SVN, JIRA, Rally and Asana for enterprise users.
• Scheduled the Linux Cron jobs and Jenkins jobs for build automation. Developed Perl and shell scripts for automation of the build and release process.
• Deployed and troubleshoot of various Jenkins issues. Installed and uninstalled, upgraded and downgraded various plugins in Jenkins.
• Utilized Jenkins master , for adding the necessary Plugins and adding more slaves to support scalability and agility, Used Jenkins to automate most of the build related tasks.
• Maintained and Developed infrastructure using Jenkins.
• Handled app-flow using dispatch group and semaphore implementation.
• Installed and configured run deck and semaphore to test its compatibility against puppet.
• Identification of system issues like shortage of semaphore, memory, files, handler, etc. by analyzing syslog messages.
• Created and used puppet manifests for deploying, configuring install shield and managing collected for metric collection and monitoring.
• Developed and implemented an automated Linux infrastructure using puppet.
• Developed puppet module for automation using combination for puppet master , R10k wrapper, Git enterprise, open stack (horizon), vagrant and simple UI (Jenkins).
• Installed/Configured/Managed Puppet Master/Agent. Wrote custom Modules and Manifests, downloaded pre-written modules from puppet-forge. Upgradation or Migration of Puppet Community and Enterprise.
• Developed build and deployment scripts using ANT and MAVEN as build tools in Jenkins to move from one environment to other environments.
• Installed Jenkins/Plugins for GIT Repository, Setup SCM Polling for Immediate Build with Maven and Maven Repository (Nexus, Artifactory) and Deployed Apps using custom ruby modules through Puppet as a CI/CD Process.
• Installed and configured monitoring tools Nagios for monitoring the network bandwidth and the hard drives status.
• Developed automation scripting in Python (core) using Puppet to deploy and manage Java applications across Linux servers.
• Installed and configured PostgreSQL database on RedHat/Debian Servers.
• Configuration and Administration of Tomcat/Apache Web Server and SSL.
• Created and maintained network users, user environment, directories, and security.
• Built and Deployed Java/J2EE to a web application server in an Agile continuous integration environment and automated the entire process.
• Installed/Configured and Managed Nexus Repository Manager and all the Repositories
• Worked on installation, configuration and maintenance Red hat, CentOS and SUSE Servers at multiple Data Centers.

Environment: Ant, SVN, JIRA, Jenkins, Hudson, puppet, Ansible, Ant, Maven, Linux, Solaris, Python, WebSphere, Shell scripting, Red hat, CentOS, Nagios.

Confidential

System administrator

Responsibilities:

• Maintained Linux operating systems such as RHEL, CentOS, Ubuntu and SUSE 10/11 as a Linux Administrator/Integrator
• Installed and configured Linux virtual machines, standalone servers for various applications via kickstart, PXE.
• Handled DCR (Defect Change Request), MR (Maintenance Request) using JIRA for change control and ticketing. Disk management and implementation of RAID levels using fdisk and LVM.
• Employed SPLUNK for log analyzing and monitored network infrastructure using NAGIOS.
• Generated scripts in Maven, Perl, Ruby, Python & Bash Shell for build activities in QA, Staging and Production environments.
• Installed and configured LAMP stack (Linux, Apache, MySQL, and PHP) for various new and existing applications.
• Installed and Configured High Availability, Disaster Recovery systems using VERITAS Cluster Server on a two-node cluster for Network file system and MQSeries.
• Troubleshooted Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP. Maintained Samba File Server for user authentication, syslog domain, and file sharing in Linux/Unix.
• Managed TCP/IP packets & DHCP servers, resolved TCP/IP network access problems for the clients and worked with various TCP/IP implementations like NFSv4, NIS, DNS and DHCP.
• Engaged in setting up Network File Services (NFS), Network Information Services (NIS) and protocols in Red Hat Linux.
• Set, Troubleshoot & fixed NFS, TCP/IP and other protocols in Linux clusters and application backups
• Worked on changing the application run time process using python scripts for WebLogic configuration and shell scripts for database configuration.

Environment: VMware ESXi, Linux, Unix, Veritas, Samba, Tomcat, Apache, WebSphere, SUSE Linux, LAMP, Python, RAID, LVM with Linux, Kickstart.

Confidential

Linux administrator

Responsibilities:

• Administered, configured and troubleshoot services like DNS, DHCP, NFS, LDAP, SAMBA, Apache Web Server, SSH, RPM, package management in heterogeneous environments.
• Architected & managed large volumes of Virtual Servers, monitored applications through Nagios, administered Apache and Nginx web servers and queered several RDBMS servers like SQL, MySQL.
• Troubleshooted various issues as they would arise in various Linux based platforms and software titles, like Red Hat, Debian, CentOS, FreeBSD, Ubuntu, Solaris
• Provided 24 x 7 production support for Apache webservers, WebLogic application servers running on multiple with HP-UX OS, Oracle databases running on HP-UX and BIG IP-F5 LTM/GTM load balancer support.
• Worked on Linux kernel memory upgrades and swap areas, hardening of CentOS, RHEL & Solaris servers, patching in Linux and Solaris and Red Hat Linux Kickstart
• Installed Sun Solaris and configured DNS, IDNS, DHCP, NIS, NFS and other Network services.
• Configured Kickstart server and applied patches to the servers using proxy server.
• Installed and configured Apache, supported it on Linux production servers, troubleshoot Linux network (PING, TRACEROUTE, ifconfig, DIG and NETSTAT) and security issues, captured packets using tools such as IP tables, firewall, TCP wrappers, NMAP.
• Analyzed the root causes for Linux (Red Hat, SUSE and CentOS), VMware vSphere & ESXi hosts, Windows, Ubuntu servers using log files.
• Maintained the Linux Firewall for network and implement to the network security
• Planned and performed the upgrades on Linux, UNIX operating systems, hardware maintenance on HP and POWER servers like increasing memory, disk & replacing failed hardware.
• Installed Red Hat Enterprise Linux 4/5/6, Debian, Ubuntu, AIX, on hardware like HP and Dell & Solaris 9, 10 operating systems on SPARC platforms.
• Installed Nagios on Linux machines, monitored hosts and used PHP for processing dynamic site content.
• Created and cloned Linux Virtual Machines & templates using VMware and migrated servers between ESX hosts.
• Administered Linux servers for several functions like managing WebSphere, Apace/Tomcat server, mail server, MySQL database, build and firewalls in both development and production.

Environment: s : Linux, UNIX, Debian, CentOS, RHEL, FreeBSD, Ubuntu, Solaris, Red Hat Linux, SUSE, Nginx, Windows Platform, WebLogic, Apache, WebSphere, Tomcat, VMware, ESX hosts, Nagios, SQL, MySQL, PHP, Python scripting.