SUMMARY

• Over 8+ years of System Administration / DevOps Engineer experience on Linux and Windows Environments with expertise in building RHEL 6.x, 7.x, Cent OS Linux 6.x,7.x, Oracle Linux 6.x, 7.x servers.
• Experience as a System Engineer/Administrator under environment of RedHat Linux (RHEL) 4/5/6/7, IBM AIX 6/7, Windows 2003/2008 R2/2012, VMware 4/5/6 environment.
• Installation, configuration and maintenance of servers in Physical (HP, Dell and IBM) and Virtualization using (VMWare vSphere 5.5, 6).
• Successfully setup RedHat Satellite 6.4 and RedHat Satellite Capsule 6.4 from scratch and setting up all the Life Cycle Environments, Content Views, activation keys, adding and synching the repositories from RedHat Portal.
• Successfully setup Oracle Spacewalk 2.6 and Spacewalk Proxy 2.6 environments and created the required channels.
• Completed the upgrade of Spacewalk from 2.6 to 2.7 successfully.
• Registered all the Linux servers to RedHat Satellite Capsule and Oracle servers to Oracle Spacewalk proxy.
• Maintaining servers by managing packages using ansible playbook.
• Successfully completed the setup of Red Hat Satellite 6.5 a latest version.
• Configure and manage Middleware and web tools such as Apache, Tomcat, WebSphere, JBoss.
• Regular work involving building new Linux Physical and Virtual servers using kickstart and PXE.
• Strong knowledge of large - scale Linux deployment methodologies, kernel configuration, performance monitoring, and tuning.
• Resolving system Hardware and software errors and crashes, huge file sizes, file system full errors.
• Managed packages using RPM/YUM on Red hatLinuxand maintaining patching on Solaris servers.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, LDAP, DNS, NFS, DHCP, FTP, SSH and SAMBA.
• Expertise in Installation, Configuration and file system management through VERITAS Volume Manager, VERITAS File System, Solstice Disk Suite and Logical volume Manager (LVM) with multiple RAID Levels.
• Problem determination and troubleshooting, Security using SSH.Installed and configured the Samba Server and Apache Web Server.
• Networking communication skills and protocols such as TCP/IP, Telnet, ftp, SSH, rlogin
• Experience in Implementing and Supporting High Availability Cluster environments using Veritas Cluster andLinuxCluster services.
• Experience in using Configuration management software's like Chef, Puppet, Ansible and Docker for Automation.
• Involved in the Installation and configuration of an automation tool Puppet that included the installation and configuration of the Puppet master, agent nodes and admin control workstation. Hands on experience in version control tools like GIT, SVN.
• Experience with different Languages: Ruby, Shell scripting, Bash, Python, and HTML to automate the deployments and environmental changes. Ability in execution of XML, Ant Scripts, Shell Scripts, Perl Scripts, Shell scripts and JAVA Scripts.
• Configuring and managing Splunk, ELK stack, Cloud watch, NAGIOS to analyze log files and collect the data. Monitoring the log files across the application servers and web servers.
• Evaluating the system log files like application logging etc.
• Have strong skills in installing, administering, maintaining and troubleshooting NFS, DNS, DHCP, LDAP, Mail Server and Samba Server in heterogeneous environment. Installation, package management and configurations of middleware and application servers onLinuxand Unix environment.
• Experiences in Server build using Kickstart, Jumpstart, NIM and Ignite Process.
• Proficiency inVMWare. Installation and monitoring Virtual environments with ESXi 4.x/5.x/6.x Servers and Virtual Center.
• Expertise in implementation of Continuous Integration, Continuous Delivery, Continuous Deployment andDevOps processes for agile projectsExperience with CI Continuous Integration and CD Continuous Deployment methodologies using Jenkins/ Hudson.
• Skilled enough to build deployment, build scripts and automated solutions (using scripting languages such as Python, Shell, Bash.).
• Installation and setup of Foreman 1.21 and Foreman Smart-proxy environments on Red Hat servers.
• Completed the sync of all the repos created as products with the download policy set to immediate.
• Successfully patched thousands of servers to avoid security vulnerabilities, upgrade server OS to latest versions.
• Experience in managing multiple file systems like ext4, xfs, implemented LVM, software RAID solutions.
• Experience in configuring and maintaining Linux applications with network protocols such as SSH, DNS, DHCP, HTTP, HTTPS, NFS, BIND, FTP, LDAP, Samba, NFS.
• Experience in Certificate Management for Servers, created and managed OpenSSL certificates for secured Server-Client communication, maintaining confidentiality, message and bilateral Authentication.
• Experience in writing scripts using Bash and playbooks using Ansible as per the project requirements.
• Managing users and groups using Active Directory, UNAB for controlling user access.
• Using Issue tracking systems and ticketing tools like Jira, HP Quality Center, Service Now, Remedy, Microsoft Teams.
• Managing performance monitoring and tuning using CLI tools and using third-party tools like Nagios, Nimsoft, Orion.
• Managing data backup using EMC Networker Management console, Legato Networker, Symantec Endpoint Protection Manager.

TECHNICAL SKILLS

Operating Systems: Red Hat, Cent OS, Ubuntu 12.04 and 16.04, Oracle Linux, Windows 2008, 2008 R2, 2012, VMware 4/5/6.

Networking: Ethernet, IPv4, TCP/IP, NTP, Chrony, FTP, HTTP, HTTPS, DNS, DHCP, SSH, SMTP, NFS, IPTables, Firewall, F5 Load Balancers LTM and GTM.

Virtualization: VMware vSphere 5.5, 6.0, (ESXi, vSphere Client, vCenter Server, WebClient).

Languages: HTML, Java script, C, C++, Perl, Shell Scripting (Bash, Ksh), Python, Puppet, chef, ansible, devOps.

Backup/Scripting: EMC Networker Management Console, Lageto Networker, Symantec Endpoint Protection Manager, Tape Tracker TMS, Bash

Cloud/Monitoring tools: AWS, GCP and Nagios, Splunk for Monitoring.

Third Party tools: Service Now, Remedy, Jira.

Linux Repositories: rpm, yum, uek, rhsm

CI/CD & CM tools: Ansible, Puppet, Git, Git Hub, Docker.

PROFESSIONAL EXPERIENCE

Linux DevOps Administrator / Engineer

Confidential, San Jose, CA

Responsibilities:

• Participated in SCM tool evaluation selection and implementation. Proactively identified, implemented process and other operational improvements forbuild/release/deployment.
• Worked closely with multiple development and test teams to provide process design, management, and support for source code control, code compilation, change management, and productionrelease management. Driving continuous improvement by focusing on increased automation, continuous integration, and continuous test principles.
• Streamlined and coordinated Configuration/Build/Release/Deployment/Process/Environment management across all the products in our Applications.
• Used Docker in Environment variables, Configuration files, Option types and Strings & integers.
• Experience with Linux systems, virtualization in a large-scale environment, experience with Linux Containers (LXC) and Docker.
• Implemented Azure cloud integrations of enterprise architecture using Active Directory, Azure Service Bus, Azure Storage, Hybrid Connection Manager, and Azure SQL server.
• Configured Azure Cloud Infrastructure to take VM level backups using the ARM templates by creating groups and users using IAM and protect the VMs using Azure Backup vault.
• Configured and deployed Azure IaaS VMs and PaaS instances into secure Virtual Networks by configuring DNS settings, DHCP address blocks, Virtual Networks, Azure Network settings, security, and routing policies.
• Created Multiple subscriptions for various departments to Mangeazuresubscription consumption
• Used ANT, Puppet/ Chef Scripts tobuildthe application and deploy.
• Resolved update, merge and password authentication issues in Gitlab and Jira.
• Created puppet manifests and modules to automate system operations.
• Extensive experience in Application Deployments and Environment configuration using Chef, Puppet, Ansible.
• Automated SQL Scripts Deployment to Staging and production Databases.
• Experience in Writing Python modules for Ansible customizations.
• Designed AWS Cloud Formation templates to create custom sized VPC, subnets, NAT to ensure successful deployment of Web applications and database templates.
• Experience executing the CI Jenkinsbuildjob for both Android and iOS application builds. Using GIT (Stash) tool as the source code repositories for all projects and Artifactory for all builds (ipa/apk)releaserepository.
• Experience with PAAS/IAAS development: using Angular JS, Docker, Ansible.
• Setup andbuildAWS infrastructure various resources, VPC EC2, S3, IAM, EBS, Security Group, Auto Scaling, and RDS in Cloud Formation JSON templates.
• Buildservers using AWS, importing volumes, launching EC2, RDS, creating security groups, auto-scaling, load balancers (ELBs) in the defined virtual private connection.
• Deployed applications on AWS by using Elastic Beanstalk.
• Manage AWS EC2 instances utilizing Auto Scaling, Elastic Load Balancing and Glacier for our QA and UAT environments as well as infrastructure servers for GIT and Chef.
• Experienced in creating source code repository using Bit bucket.
• Involved inDevOpsprocesses forbuildand deploy systems.
• Created Python scripts to totally automate AWS services which includes web servers, ELB, Cloud Front distribution, database, EC2 and database security groups, S3 bucket and application configuration, this script creates stacks, single servers, or joins web servers to stacks.
• Worked with batch team to schedule and monitor batch jobs on weekly basis.
• Worked as Admin on JIRA tool. Customized the dashboard based on team's requirement.
• Added users, implemented Security and added new projects on JIRA.

Environment: Linux, Ansible, Git version Control, VPC, AWS EC2, S3, Route53, EBS, IAM, ELB, Cloud watch, Cloud Formation, AWS Auto Scaling, Maven, Jenkins, Gitlab, Unix/Linux, Shell scripting, Jenkins.

System Administrator / DevOps Engineer

Confidential, Palo Alto, CA

Responsibilities:

• Extensively worked on Performance Monitoring and Tuning of Servers using Command Line (CLI) tools along with monitoring tools to maintain stability.
• Responsible for installing, building and configuring multiple Physical and Virtual servers like Red Hat Enterprise Linux 6.x,7.x, CentOS 10, Oracle Linux 6.x, 7.x.
• Built the RHEL and Oracle servers from the VM Golden Image template.
• Patched over 1800 Linux servers by automating the patching process using Ansible playbooks.
• Successfully setup RedHat Satellite (6.2, 6.4, 6.5), RedHat Satellite Capsule, Oracle Spacewalk (2.6, 2.7) and Oracle Proxy environments.
• Experienced working with Configuration management tool like puppet.
• Installed puppets on no puppet nodes and migrated from puppet older versions like puppet v3 to puppet v4 and puppet v5.
• Experience with patching nodes from upgrading to newer versions of OS with RHEL and ubuntu.
• Experience working on F5 Load balancers to monitor traffic within servers.
• Creating and Updating LTM configs by open stack cloud and manually configuring F5 devices by involving Data center and Networking team.
• Having very good knowledge of GTM configuration.
• Registered all the Linux server to RedHat Satellite Capsule and Oracle Spacewalk.
• Created, installed and updated latest packages from RedHat and performed patch management using Red Hat Satellite Server 6 to keep the servers up to date.
• Providing Tier II troubleshooting and supporting prod and non-prod environment and finding the RCA for the issues to avoid same issues in future.
• Troubleshooting issues based on severity level on service now ticketing tool.
• Maintaining and managing the offshore team of 8 members sitting in Chennai India, guiding them according to the project environment.
• Experienced with AD Active Directory and GPO.
• Installed and updated latest packages from Oracle and performed patch management using Oracle Spacewalk 2.6 to keep the servers up to date.
• Deployed the initial Azure components like Azure Virtual Networks, Azure Application Gateway, Azure Storage and Affinity groups.
• Integrated Azure Log Analytics with Azure VMs for monitoring the log files, store them, and track metrics, and used Terraform as a tool, Managed different infrastructure resources Cloud and Docker containers.
• Installation and setup of Foreman 1.21 and Foreman Smart-proxy environments on Red Hat servers.
• Completed the sync of all the repos created as products with the download policy set to immediate.
• Experienced in maintaining and managing Data Center Team, according to issues from Physical server’s side.
• Installation of FlexNet Agent (FNMS) on all the servers to pull the license information and track the server status.
• Performed McAfee Agent installation on the RHEL and OEL 6, 7 servers to have security team to activate antivirus for monitoring.
• Wrote the ansible playbooks for server hardening as per the CIS benchmark, RedHat and Oracle Servers registration, VMWare tools upgrade and Patching of servers.
• Knowledge in using IPTables and Firewall to provide network security by filtering the incoming and outgoing network traffic.
• Monitor servers and network performance, application health check, disk space and logs using Splunk and through Remedy Incident alerts.

Environment: Puppet, AWS, GIT Hub, Linux RHEL6/7, OEL 6/7 and Ubuntu 12.04/16.04 , Splunk, JIRA, Udeploy, Red Hat Enterprise Linux, SVN, GIT, Jenkins, Apache Tomcat, Shell, Nexus, Python, Ruby, Docker and MangoDB.

System Administrator/ Cloud Engineer

Confidential, NYC, NY

Responsibilities:

• System administration support involving server build, installation, configuration and implementation on Linux servers.
• Successfully patched over 800 Linux servers with latest patches to avoid any security vulnerabilities.
• Installed and configured multiple VMWare ESX 5.5/5.0 Hosts, vCenter server and vSphere client. Created and configured new Virtual Machines as per the requirements.
• Involved in live VM migration vMotion from one host to another and Storage vMotion from data store to another.
• Performed host only and data store migration of hosts in Cluster.
• Installing, configuring and administering DNS, DHCP, TCP/IP, FTP, SFTP.SSH
• Regular disk management like adding/replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives.
• Installed, configured and deployed multiple applications in Apache Tomcat, IBM WebSphere and JBOSS application server.
• Managed OpenSSL certificates for Server-Client secured communication, maintaining confidentiality, message integrity and bilateral Authentication.
• Worked on all the vulnerabilities sent by the security team on the servers and fixed the issues through the release errata/bug fix or by making the required configuration changes.
• Creating Change Management log and inform the higher management about unplanned server outages and planned change activities.
• Used EMC Networker Management Console, Legato Networker and Symantec Endpoint Protection Manager to monitor multiple server health, utilization, memory and disk space alerts closely.
• Used Industry standard ITIL process for decommissioning of servers and also worked on troubleshooting the Hardware issues.
• Monitor server performance like CPU utilization, Disk utilization, health check, application health check and log management using CLI tools and third-party tool Nagios.
• Monitoring the ticket queues all the time, creating tickets using Service Now working on the tickets and resolving them within the time frame.
• Experience in preparing Root Cause Analysis, providing documentation, On-Call rotation and 24x7 Production Support.
• Implemented Virtualization with VMware vSphere 4.0, implemented and managed Virtual Machines using VMWare ESX, vCenter and vSphere client.
• Performed VM cloning using vCenter server, Templating and vMotion activities on ESX Clusters.
• Installed, configured packages using RPM, Red Hat Subscription Manager and performed upgradation, patching works on Linux Servers.
• Installed WebSphere 7.0 as Application Server, performed upgradation from WebSphere 7.0 to WebSphere 8.0.
• Created scripts to schedule multiple Cron jobs in Linux Environments and scheduled multiple jobs using Task manager in Windows Environments.
• Installed, configured and deployed Oracle 11g, Mongo DB Databases for several applications.
• Hands on experience in monitoring Server infrastructure with Solarwinds Orion and CLI tools for performance Analysis and trouble shooting.
• Installed and configured multiple applications in the environment according to the requirement.
• Troubleshooting the issues and monitoring the servers after the resolution to check the CPU utilization and memory usage and getting the RCA for the issue to avoid these again in future.
• Supported the prod environment for 24x7 on call even on weekends for once in a week shift, to avoid the escalation and give the bets service for the client and customers for prod environments.
• Troubleshooting the issues based on the severity level.
• Experienced in maintaining Data Center Team when needed from physical servers’ side, guiding them through follow up with vendors and about cables and parts.
• Experienced with patching by patching thousands of servers to avoid security vulnerabilities, upgrade server OS to latest versions.
• Experience in managing multiple file systems like ext4, xfs, implemented LVM, software RAID solutions.
• Experience in configuring and maintaining Linux applications with network protocols such as SSH, DNS, DHCP, HTTP, HTTPS, NFS, BIND, FTP, LDAP, Samba, NFS.
• Experienced in resolving Network issue from network side without involvement of network team.

Environment: Jenkins, JIRA, Open Stack, Maven, GIT, Apache ANT, Tomcat, apache, Java/J2EE, Subversion, Puppet, AWS, Python, Unix Shell Scripting.

System Administrator (Linux, VMware, Windows)

Confidential, Marietta, GA

Responsibilities:

• Extensively worked on server build, Configuration and Administration of Sun/HP/Dell servers from scratch with OS Linux(Red Hat, HP UX & SuSE)
• Performed configuration, monitoring, support, tactical planning of rollouts, migrations, and day-to-day management of the HP server infrastructure.
• Automated server building using System Imager, Kickstart and Jumpstart on Sun and Ignite on HP servers
• Configuring and troubleshooting SAMBA SERVER INLinux.
• Monitoring Server performance and troubleshooting server related problems.
• Worked with database administration staff to ensure optimal performance of databases, and maintain development applications, databases, and ensure database backup completed successfully.
• Implementation of RAID techniques and the creation of Disk groups and volumes using VERITAS Volume Manager 4.1, solstice Disc Suite and logical volume manager for managing disks and file systems
• Installing operating system patches, packages, system customization and documentation
• Implemented Red Hat Cluster Suite with GFS and RHN Satellite Server in the Development and Production environments
• Configured and implemented NIS, DNS master Slave servers along with required clients
• Building, Installing and configuring Veritas Cluster Server and HP MC service Guard
• Associated with DBAs for installation of Oracle database (RAC) onLinuxservers & for tuning, backup and restore
• Experience with EMC Storage on Solaris andLinuxservers (i.e. familiar with Navisphere, Access Logix, Host Agent, Power Path, Snapshot and Cloning, SAN Copy
• Setup and maintain Logical Volume Manager (LVM), Created Physical volumes, Volume groups, Logical volumes and Mirrored root Disk
• Installed, configured and maintaining services Apache, Web servers.
• Configured ESX 5.x, 4.x with SAN Attached storage (LUN Assignments, Data stores)
• UtilizedVMwareConverter for Physical to Virtual/Virtual to Virtual conversion/Physical to Physical conversion.
• Experience working on public cloud - AWS, Azure, GCP, and/or experience working on virtualization technologies
• IaaS experience (vSphere / ESXi / AWS / OpenStack / Azure / GCP)
• Cloud platform experience with multiple services on AWS, GCP or Azure
• Experience with Cloud Service Providers such as Amazon AWS, Microsoft Azure, and Google GCP
• Creating Virtual Machines, updatingVMwaretools,VMwareHardware, Virtual disk and memory expansion.
• Managing and implementing various projects with all phases of life cycle for virtualization.
• Environment: GIT, GitHub, Jenkins, Chef, Python, Linux, Tomcat, Shell script, RHEL 5.x/6.x, YAML, Apache Tomcat, JIRA, Visual Studio, Hudson/Jenkins, MAVEN, Web servers, Splunk.

Systems Administrator (Azure/Linux)

Confidential, Chicago, IL

Responsibilities:

• Installing, configuring and updating Red hatLinux5.x, 4.x servers using Kickstart. Solaris 8, 9, 10 servers using media, live upgrade and Jumpstart and Experience in the creation of Containers, Zones with Solaris 10.
• Experience with installation, configuration, upgrade and administration of IBM pSeries and power5/power6 servers on various levels of AIX operating system utilizing environment.
• Installation and configuration of Open SSL; Enabled the trusted shell for oracle user between different box’s.
• Extensively used LVM, created VGs, LVs, and disk mirroring per usage and requirements
• Installed VIO server for Advanced POWER Virtualization (APV) on IBM P5 System. Assigned resources by creating client LPARs and administered OS and application installation
• Performed OS up gradation in AIX 5.2/5.3 to a more stable version of AIX 5.3 and from 5.3 to 6.1.
• Installation and troubleshooting onVMwarerunningLinux(RHEL, SUSE).
• Configuration & Implementation of TCP/IP, FTP, DNS, DHCP, Windows NT 4.0 Server RAS connectivity through VSAT.
• NTP Server configuration for new clients and synchronized the clients with NTP server
• Perform UNIX administrator duties supporting production servers running ERP (SAP) and database (Oracle, data guard, Sybase, PeopleSoft, and DB2)
• Extensive use of volume management tools like Veritas Volume Manager 4.1 to create disk groups, volumes with RAID 5, 01, 10, 51 architecture and Solaris Volume Manager to create layered volumes.
• Worked on the Apache 2.x for the configuration of Name Based Virtual Hosts and IP Based Virtual Hosts and generating SSL Certificates.
• Worked with the SQL & Oracle DBA teams for the configuration of file systems, performance tuning of the OS and the installation of Oracle 9i, 10g on both Solaris and Red hat environments.
• Creating, Mounting and Troubleshooting NFS File systems on different OS platforms.
• Configuration and administration of DNS servers using BIND 8.4.6 onLinuxas the Operating System
• Defined and setup network printers, and install client/server applications.
• Troubleshooting critical networking and hardware issues and other day-to-day user trouble tickets in association with other administrators in the group.
• Responsible for Monitoring system resources of database servers to assure production systems meet availability requirements and hardware enhancements are scheduled in a timely fashion.
• 24/7 on-call support for critical database issues on a rotational basis.

Environment: AWS, Maven, Jenkins, Git, Web Sphere, Ansible, Kubernetes, Application Servers, Apache Tomcat, Agile/Scrum, PowerShell, Vagrant, SDLC, Docker, Linux