PROFILE SUMMARY:

• 8+ years of Experience in installation, administration, patches, up gradation, configuration, performance tuning and troubleshooting of Red Hat Linux 4/5/6 and Ubuntu.
• Install and configure all the Linux servers in the network per specifications of clients.
• Create YUM Server, Automate rpm updates on multiple clients with appropriate Target version.
• Perform OS tuning, understand networking, perform user management, and perform security hardening, review OS logs as needed and perform system backups
• Experience with providing storage from SAN arrays (EMC CX/VNX) and zoning on the brocade switches and NetApp filers by creating volumes on raid groups and aggregates and sharing to Windows and UNIX servers using CIFS & NFS.
• Experience with the installation, configuration and volume/File system management using Logical Volume Manager (LVM).
• Setup NFS File Systems and shared them for Clients, Maintenance of NFS Server with Auto Mounts.
• Experience in Puppet Master and Client installation and configuration, in developing puppet modules (blue prints) for installation, configuration and continuous integration (CI) using combination of puppet master, Git, R10K wrapper and Jenkins.
• Auto mounts existing NFS home directories for remote users.
• Proficient in Network configuration tools TCP/IP, DHCP, DNS, NFS, LDAP, SSH, SSL & SMTP.
• Providing solutions to client about Disk mirroring and RAID implementation using LVM.
• Responsible for data management using Red hat and CentOS utilities for archiving, compression backup and restore.
• Formatting, creating disks and increasing disk partitions.
• Monitor user / application disk quotas & disk space usage.
• Troubleshooting user logins, permissions, and groups, controlling file and directory permissions.
• Deployment of ftp and http servers.
• Infrastructure hardening and Security Administration & Installation on multiple systems
• Perform administration and monitor job processes using associated commands and tools.
• Can write programs using Shell scripts with cron job to maintain and monitor different automated regular tasks.
• Automate the software installation process by using kickstart installation and automation scripts.
• Maintain necessary back - up of the important files and documented Linux scripts for future reference.

TECHNICAL SKILLS:

Operating Systems: RHEL, CentOS, Ubuntu

Application Servers: Apache, MySQL, Samba, NFS, FTP

Package Management: Red Hat Package manager and YUM

Remote System Support: SSH

Scripting: Python, Perl

Version Control: Github

Cloud management: Amazon Web Services and VMware

Monitoring Tools: Top, HTop, NetHogs, Nagios

Security: SELinux, Firewalld

WORK EXPERIENCE:

Confidential, Atlanta, GA

Linux Administrator

Responsibilities:

• Installed, Configured and Maintained RedHat Linux Red Hat Enterprise Linux 5.x, 6.0& 7.x, Ubuntu and Sun Solaris systems.
• Worked on Virtualizing Red hat servers using vSphere 6.0 and managed ESX servers using vCenter and worked with ESX Cluster and VMotion.
• Perform backups, file replication, and script managements for servers.
• Build and configure more than 2000+ Redhat Linux physical and virtual servers for Confidential disaster recovery site.
• Creating and deploying a VMs in vCenter / Deploying a Bare metal server for databases through Cisco UCS, Building Virtual Machines, Cloning & Migrating and Adding processors, RAM, NIC, disks to the VMs.
• Registered all the servers in Redhat Satellite 6 and performed necessary patches.
• Working on building the Linux RHEL servers and Windows servers using VRA Catalogs & blueprints and VRO for ISO templates.
• Working on monitoring larger scale servers on Vmware-vsphere and installing monitoring agents.
• Working on info blox for assigning IP addresses and host name registrations for Linux and windows servers.
• Following up issues with WMS, management and operational issues.
• Responsible for installation and upgrade of patches and packages on RHEL 5/6/7 using RPM & YUM.
• Hands on experience in creating volumes and managing file systems using LVM.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software and directories & files.
• Monitoring the CPU utilization and disk space and memory in Linux machines.
• Managed Virtual Memory and swap space on RedHat Linux Servers.
• Installed and Configured RedHat Linux Kickstart and Solaris jumpstart Servers.
• Develop methods to automate routine infrastructure tasks such as deployment and maintenance duties using Ansible.
• Experience in volume and file system management using Logical Volume Manager (LVM).
• Experience working with HP and IBM Blade centers to consolidate data centers.
• Installed and configured various software applications and packages such as Apache, WebLogic, Oracle 11g & 12c.
• Managed user accounts and groups on a large scale in LDAP .
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.
• Involved with the deployment teams in troubleshooting and fixing day-to-day problems of the applications in production on 24/7 schedule.

Environment: Redhat EL 5.x, 6.x & 7.x, Redhat Satellite server 6, SuSe 10, IBM x3650, IBM HS22 Blade Center, IBM x232, IBM x236, T2000, T5120, E220, E420, 450, V240, V880/890, E3500, BL460c, Dell M1000e, M600, SF 440, Infra Enterprise, LDAP, EMC Power Path, EMC-Avamar Netback up, IBM Storage Manager, HP, Oracle (10g/11gR2&12c), Cisco UCSD&UCSM, Korn shell, VMware ESX6.0, VMware vSphere ESX6.x.

Confidential

Linux Administrator/Infrastructure Specialist, Baltimore, MD

Responsibilities:

• Installing, Configuring and OS Upgrades of Server systems such as Red Hat enterprise servers (version 5, 6 & 7), CentOS, Microsoft Server 2012 & 2008 etc.
• Performing standard system administration tasks such as patching, software & hardware upgrades, directory services, troubleshooting and problem resolution.
• Enforcing the Data Center server standards, policies & procedures, setting up and maintain user accounts and managing access control.
• Monitoring all servers associated with Cigna's environment.
• Deployment and Support of OpenStack Cloud based on RHEL/CentOS.
• Experience in using Puppet & Chef for OS configuration & automation.
• P r ov i di ng a n d m a n a gi ng ne t w o r k st o ra ge L U N s a n d L V M s usi ng T a r ge t C LI a n d i SCS I
• Configured LDAP clients on server test and troubleshoot for maintaining network & data security.
• Experience in building of RAC clusters & setting up monitoring for any new oracle database.
• Monitoring regular load of application server and doing operational support.
• Managing Linux containers using Docker and docker registry.
• Scheduling Cron jobs for disk utilization, CPU utilization, backing up/Restoring of file systems, backup schedules, System administration and Maintenance tasks using shell scripts. .
• Working knowledge of Active directory databases like Microsoft Active directory domain services.
• Deploying security update and patches to the Linux platform to run more stable and secure infrastructure.
• Performance monitoring and tuning servers using tools like top, ps, prstat, netstat, lsof, vmstat, sar etc.
• Providing key operational statistics on system usage, disk utilization, downtime & performance.
• Worked with EMC SAN to acquire storage and setting up veritas/LVM file systems.
• Supporting Dev, QA and Production on daily basis and ITIL practices like change management, incident management, problem management & release management.
• Health checks of servers and generates reports for critical servers.
• Installation/Configuration of VMware infrastructure including vCenter, ESXi, etc.
• Provide guidance on best practices for server configuration, patching and system management.
• Experience in new server builds & adding monitoring to them based on customer requirement, server decommissioning.
• Removing the instances which power-off state by taking confirmation from server owner.
• Create and maintain documentation on Linux server builds, policies and procedures, ensuring they are accurate & current.

Environment: Red Hat Linux (RHEL 5/6/7), Red Hat Satellite Server, Oracle RAC, Veritas Cluster Server, NAS, Active Directory, NIS, Apache, RAC, AWS, Infrastructure Management, VMware, RPM, HPSM, LVM, Web sphere.

Confidential, New Jersey, NJ

Linux Admin/ DevOps Engineer

Responsibilities:

• Supported Linux environment with around 7000+ servers running Redhat Linux.
• Installation, Configuration, and OS upgrades on RHEL 6.X/7.X.
• Migrated servers from on Premises to AWS cloud as well as created EC2 instances in AWS cloud platform.
• Replace old Bash monitoring scripts with Grafana for real time alerts and reporting.
• Worked on AWS server provisioning and standardization using Puppet Manifests.
• Installed and configured Red Hat Satellite server for package transfer across servers, to store client's system profile and to control other servers in the network.
• Working on volume management, disk management, and software raid solutions using Logical Volume Manager.
• Repository management in Gradle to share snapshots and releases of internal projects using Nexus tool.
• Set up and maintain continuous automated build system with Jenkins, perforce and Perl/Python scripting.
• Experienced with Open shift platform in managing Docker containers and Kubernetes Clusters.
• Coordinate/assist developers with establishing and applying appropriate branching, labelling/naming conventions using GIT source control.
• Analyze and resolve conflicts related to merging of source code for GIT.
• Configured Jenkins for doing the build in all the non-production and production environments. Worked extensively on CVS, Subversion as Version Control.
• Deployment of Docker Swarm Cluster for Jenkins builds tooling.
• Perform the Linux Kernel and operating system upgrades on the server as suggested by Linux engineering team.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Experience in shell scripting for doing CRON jobs that run daily to check disk usage and perform cleanup of file systems on different environments.
• Automated process to Install/configure/maintain of networking tools NFS, NTP, FTP, SFTP and troubleshooting.
• Wrote Bash/Shell/Perl scripts for managing day-to-day transactions & for automation of routine task.
• Determined ways to optimize/improve JIRA and JIRA Agile setup and process workflows, as well as identify

Environment: REDHAT LINUX (5.x, 6.x, &7.x), Ubuntu (14.04.5 & 16.04), ColudBees Jenkins, Puppet, Chef, Git, Clearcase, Cvs, Docker, AWS, Swarm, Sonar, Nexus, Artifactory, & Kubernetes.

Confidential

DevOps/Linux Engineer with Build & Release

Responsibilities:

• Responsible for day-day administration of Linux System and middleware. Administration of RHEL 5, 6, CentOS with work related to install, test, tune, upgrade, troubleshoots server’s issues and load patches.
• Defined and Implemented CM and Release Management Processes, Policies and Procedures.
• Experienced in the Design/Architecture of AWS and hybrid cloud solutions.
• Skilled in AWS services such as EC2, EBS, S3, RDS, VPC, Route53, ELB, IAM, Cloud Front and Cloud Formation.
• Experience with build tools like Ant, Maven to write build.xmls and pom.xmls respectively in Java, JavaScript and JEE applications.
• Deployed and monitored infrastructure using configuration management tools likePuppet and Chef for AWS/OpenStack/IBM-BlueMix and DELL DRAC on cloud environment.
• Implement automate and provision frameworks using Ansible/Saltstack.
• Experienced in Configure management and source code repository tools using TFS, Subversion (SVN), GIT, RTC, Agile tools such as JIRA and SCRUM and CI tools such as Team city, Bamboo and Jenkins.
• Integrating Docker with various tools such as AWS, Ansible, Chef, Puppet, Bamboo, Vagrant, Jenkins & VMware containers.
• Proficient working on Source code tools Clear case, TFS, Git
• Strong knowledge to merge, tagging for change management conjunction within projects of the organization.
• Involved with team in developing design to deliver multi-tier products with web-based, plug-in-based, mobile-based, however depends on client necessity on server technology (Microsoft C#/.NET/SQL) and build Object oriented Java Scripts and JS libraries.
• Provided support with teams involved on .NET 3.5/4.0 Framework, which includes visual studio 2008, VB.NET, ASP.NET, ASMX, ADO.NET and WCF Web services.
• Development experience in LAMP (Linux, Apache, and MySQL & PHP) development stacks.
• Involved in Development, test and production environment using SQL, PL/SQL, Python, Ruby, Powershell scripts and monitor host server such as Tomcat, Apache and NGINX.
• Provided key support for ASP.NET MVC and ASP.NET Web API from intermediate and advanced level for the development team.
• Collaborated with Project Managers with release configuration scope and verify successful release.
• Worked on automation and deployment with tools JIRA, Mesosphere, UDeploy and as a part of deploy and rollback in this project used Nexus.
• Design chef cookbooks and built ansible playbooks to managed configurations and automate installation process.
• Implemented Splunk applications, searches and dashboards.
• Provided hands on support for the development team to build code using various languages like C, C++, Go languages in Linux environment.
• Assisted Networks team with firewalls and DNS requests as per need of infrastructure and in parallel applied SSL and F5 for delivery of secure application.
• Assist development team with implementation of appropriate branching.
• Configure, tune of JDBC connection pools, JMS configurations and JVM tuning.
• Documented procedures of deployment & provided production support bi-weekly 24/7.

Environment: REDHAT LINUX (5.x, 6.x, &7.x), Ubuntu (14.04.5 & 16.04), ColudBees Jenkins, Puppet, Chef, Git, Clearcase, Cvs, Docker, AWS, Swarm, Sonar, Nexus, Artifactory, & Kubernetes.