SUMMARY:

• Over 7+ years of industrial experience as a Linux Administrator in system administration in Red Hat Enterprise Linux, Cent OS & Fedora and Production Support of various applications in Red Hat Enterprise Linux, and Windows environment
• Experience in Installation, Configuration, Upgrade, Patches, and performance tuning on UNIX and system software & hardware
• Experience in Installing, configuring and maintaining the file sharing servers like Samba, NFS, FTP and Web Sphere & Web Logic Application Servers, Nagios and Chef
• Experienced in configuring and managing Puppet master server and updating and creating modules to push them through puppet clients
• Experience in Installing and configuring Apache/Tomcat/Java/MySQL
• Worked on configuring the Linux machines through Kickstart (Red Hat Linux) program for Host and Network based Installations
• Expertise in configuration and managing Linux Virtual Machines under VMware
• Experience in Package management using RPM, YUM and UP2DATE in Red Hat Linux
• Experienced in managing users and groups and assigning file access privileges, ACLs, changing ownerships of users and groups using chown, CHGRP commands, modifying the file permissions using CHMOD, SUID, SGID, and Sticky bit commands per the requirement
• Efficient in installing, configuring and implementing the RAID technologies using various tools like Logical volume manager and File System
• Exposed to work on central remote printer services using CUPS
• Experienced in configuration and maintenance of common Linux services such as Tomcat, Apache, MySQL, NFS, FTP, Postfix, LDAP, DHCP, DNS BIND, HTTP, HTTPS, SSH, IP tables and firewalls etc.
• Experience in troubleshooting hardware issues on HP DL 380, DL 580, BL 460c and BL 660c servers
• Ability to handle load balancer implementations like bonding multiple interfaces into single bond in case of over load on LAN device
• Extensively used VERITAS Cluster Server 4.x & 5.x
• Experience in VERITAS Volume manager (VxVM), Mirroring, and striping, Parity, New File Systems, Mounting and Un mounting File Systems Also Back - up management using normal back-up tape drives, manual commands (TAR, SCP, CPIO, DD etc.), VERITAS Net Backup
• Strong understanding in writing the automation of processes using the shell script with bash and Python
• Extensively worked under the Devops environment using the Configuration Management Tool such as PUPPET open software for the automation of several processes
• Worked in physical, virtual and Devops environments with several teams and contributed in user and group management, data management, network management, system and server administration tasks etc.
• Profound Knowledge in cloud-based Infrastructure services like Amazon Web Services (AWS), and Containers like Docker
• Worked on Amazon Web Services (AWS) infrastructure with automation and configuration management
• tools such as Chef and Puppet
• Resolving system errors and crashes, huge file sizes, file system full errors
• Experience in Package management using RPM, YUM and UP2DATE in Red Hat Linux
• Excellent analytical, problem solving, communication as well as interpersonal skills
• Also, involved in documenting technical processes, and finding out with Root Cause Analysis
• Capable of quickly learning and delivering solutions as an individual and as part of a team

TECHNICAL SKILLS:

Operating Systems: Linux (Red hat - RHEL /4/5/6), Oracle Enterprise Linux (5/6/7) IBM AIX (4.3, 5.1, 5.2, 5.3), HP-UX, Solaris, Windows 03/00/NT4.0.

Hardware: HP DL380 G5/G6/G7/Gen8, Dell PowerEdge 1950, 2300, 2450, R810.IBM RS/6000, IBM Blade center, JS20, JS21, HS20, pSeries 570, 590, 595, 650, 630, 670, 780, 770, 750, 740, 730 SUN Enterprise 450.

Web Servers: Apache (httpd), apache-tomcat, jboss, WebLogic. Tomcat, Apache, WebSphere, Apache Http Server, IIS 4.0/5.0, MQ Series.

Languages: Shell scripting Ksh & Bourn Shell, Korn Shell programming, PL/SQL

Databases: Oracle /10g/11g, DB2, MS SQL SERVER 7.0/2000, SyBase.

Networking: NIS, NFS, AutoFS, DNS. TCP/IP, DNS, DHCP, Cisco Routers/Switches, and LA

Other Skills: VMware, VCenter Server, VMware Server, Xen, Solaris Zones. LPAR, NIM, Puppet Enterprise

WORK EXPERIENCE

Confidential, Jacksonville, FL

Devops System Administrator

Responsibilities:

• Developed automated processes that run daily to check disk usage and perform clean-up of file systems on UNIX environments using shell scripting and CRON
• Technical Lead for all public facing sites that ran on Linux
• Automated deployment, and testing of sites for Windows and Linux platforms
• Served as technical lead for the support and architectural delivery of more than 60 RHEL servers and provided technical support on hardware installation
• Management of Apache servers including installation, maintenance and troubleshooting
• Optimize resources using virtual machines with open source and proprietary virtual machine
• Develop shell scripts to automate administrative tasks
• Tomcat 7 and Apache 2.2 setup on EC2 instances
• AWS Infrastructure setup Web Server, App Server and PDS Server
• Hands on experience in a Linux environment with Apache Tomcat on Amazon AWS
• Built a new CI pipeline. Testing and deployment automation with Docker, Jenkins, and puppet
• Responsible for packaging all code into RPMs
• Deployed LDAP for centralized authentication
• Designed and implemented network upgrades for projected network growth, maintaining network bandwidth as per requirement
• Created software build and release best practices, standards, procedures and tools
• Coordinate with web developers to ensure webservers were configured to support their website rollouts
• Installed and configured Web hosting administration HTTP, FTP, SSH, & RSH
• Created and maintained Virtual machines in VMware ESX
• Configure and deploy clustering and network load balancing for home health application
• Documented troubleshooting guide for administrators to be used for on-call pager duty
• Managed Backups for critical data which was stored on more than 70 servers
• Monitored, troubleshot, and resolved issues involving operating systems
• On call 24 hours to ensure web servers are online and available always

Confidential, Chicago, IL

Linux System Administrator

Responsibilities:

• Experienced as Red Hat Enterprise Linux Systems Administrator and performed support role for applications on mission critical Enterprise Networks and Multi-server environments
• Experience in Administration, implementation and support of OS RHEL 5/6
• Experienced in the kick-start installations, support, configuration and maintenance of RHEL 5.5, and x86-64 Servers under heterogeneous environments
• Experienced on patches installation, patch upgrades and packages installation on Red Hat Linux servers by using RPM & YUM
• Experienced in providing day-to-day user administration like adding/deleting users in local and global groups on Red Hat Linux platform and managing user's queries
• Created Puppet Master and Agents machines in the production environment for deploying, updating the software in automation process
• Helped in creating the manifest files for deploying the mail software across multiple agents in the production environment
• Installed Apache/Tomcat Server
• Installed VMware vSphere client software which is a part of vSphere suite on a client machine to monitor the virtual hosts
• Automated the cloud deployments using chef, python and AWS Cloud Formation Templates
• experienced in core AWS services (S3, EC2, ELB, EBS, Route53, VPC, Auto scaling etc.) and deployment services (Elastic Beanstalk, Lambda, OpsWorks and Cloud Formation)
• Knowledge in configuration and managing Linux Virtual Machines under VMware 5.x
• Performed regular disk management like adding / replacing hot swappable drives on existing server’s workstations, partitioning per requirements, creating new file systems or growing existing one over the hard drives and managing file systems
• Configured distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements
• Experienced with the installation & configuration of volume management using VERITAS Volume Manager, VxFS file system
• Worked with Backup Team to Configure the Master and Client Backup Servers using Veritas Net Backup and Recovery from tapes using ufsdump, ufsrestore, and tar and cpio file system administration
• Performed Network trouble shooting using 'ndd', 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON
• Installed and configured Web hosting administration HTTP, FTP, SSH, & RSH
• Monitored the hosts and networks using sar, Iostat, VMstat, MPstat and other tools
• Developed UNIX shell scripts using Shell Scripting
• Used Remedy and ServiceNow call tracking systems to log, track and manage Incidents and Service Requests

Environment: RHEL 5/6, RPM & YUM Server, HTTP, FTP, SSH, RSH, Cron, UNIX, Puppet Enterprise 2016.1.x, VERITAS Volume Manager, VxFS file system, Apache/Tomcat Server, PHP, NFS & VMware

Confidential, Houston, TX

Linux System Administrator

Responsibilities:

• Experienced in Installing, Upgrading, Patching, Configuring and Administrating Red Hat Linux (RHEL)
• Experienced with CI tools (Jenkins)
• Experienced with Configuration Management Tools (PUPPET, CHEF)
• Performed server configuration management on apache products, MySQL, and WebLogic using tools such as Chef
• Installed and Configured nodes on a VERITAS Cluster in a SAN environment, adding VCS agents for Oracle, Sybase, troubleshooting fail over issues, resource management
• Configured distributed file systems and administering NFS server and NFS clients and editing auto-mounting mapping as per system / user requirements
• Installed, configured, and administered DNS, NFS, NIS, Mail servers, FTP servers RPM servers on Sun Solaris and Red Hat Linux platforms
• Worked on VMware/EXS servers. Installing and monitoring various virtual environments with ESX 4.x/5.x and Virtual Centre 2.x
• Installed and configured SAMBA, APACHE / TOMCAT server for Solaris and Windows connectivity
• Created user accounts, user administration, local and global groups on Solaris and Red Hat Linux platform
• Monitored servers and network performance by using NAGIOS, Iostat, Vmstat, Mpstat and Other Tools
• Regular disk management like adding / replacing hot swappable drives on existing server’s workstations, partitioning per requirements, creating new file systems or growing existing one over the hard drives and managing file systems
• Provided customer support, help/troubleshoot users to resolve server, network, and other system wide problems
• Experienced as a project leader with an ability to initiate/manage cross functional teams and multi-disciplinary projects
• Wrote build/integration/installation scripts in python and bash as needed
• Created software build and release best practices, standards, procedures and tools
• Redefined processes and implemented tools for software builds, patch creation, source control, and release tracking and reporting, on Unix platform
• Participated in weekly release meetings with Technology stakeholders to identify and mitigate potential risks associated with the releases
• Accountability and coordination for all release activities from development through production implementation
• Developed and supported the Configuration and Change Management Processes and Procedures
• Participated in release/milestone planning and scheduling with the product team.

Environment: Apache Tomcat, Remedy, Python, Shell Scripting, NAGIOS, Iostat, Vmstat, Mpstat, DNS, NFS, NIS, Mail servers, FTP servers, RPM servers, SAMBA, VMware/EXS servers, ESX 4.x/5.x, Virtual Centre 2.x, VERITAS, VCS, Puppet, WebLogic & RHEL

Confidential, Atlanta, GA

Linux Administrator

Responsibilities:

• Managed UNIX Infrastructure and EMC storage involving maintenance of the servers and troubleshooting problems in the environment
• Installed operating systems Solaris, Linux and HP per business requirements
• Planned and implemented the configuration changes to the servers adhering with ITIL change management process
• Troubleshot the issues ranging from Solaris, Linux and SAN environments
• Regularly applied patches both for SUN and Linux systems
• Installed and Configured Jumpstart and Kickstart Server
• Created and maintained Virtual machines in VMware ESX
• Worked on different VMware products like VMware workstation, GSX/VMware server, VMware player, and VMware Converter
• Configured & Installed Linux server
• Installed and configured Send mail on Solaris Linux and AIX servers
• Involved in SAN migration project to migrate the data across the storage arrays
• Established end-to-end software development process using shell on top of BO, including automated builds of Rhapsody models
• Implemented security policy and managed firewalls/IDS. Managed DNS, send mail, IP space, and co-location facility transition
• Providing 24/7 on-call support on rotation basis
• Assembled, Replaced and Handled Sun, Linux and AIX Hardware problems in Data Center

Environment: RHEL 3, RHEL 6, RHEL 7 & VMware Environments, AIX, Solaris, IDS, Managed DNS, VMware ESX, VMware workstation, GSX/VMware server, VMware player, VMware Converter, Solaris, Jumpstart & Kickstart servers, SAN, HP & UNIX