SUMMARY:

• Accomplished Systems Administrator with 8+ years of experience building and supporting Linux and UNIX systems in distributed server farm environments.
• Proficient with a wide variety of computer software and hardware.
• Proven ability to grasp new technologies and effectively address a wide range of challenges.
• Detail oriented, able to get the job done right the first time.
• Functions smoothly in a collaborative, performance - driven environment.
• Takes initiative on new challenges and possesses the flexibility to adapt to the changing needs of the business.
• Skilled in workload management and project distribution.
• Able to remain calm and meet deadlines when under pressure.
• Mature individual with a proven record of reliability and trustworthiness.

TECHNICAL SKILLS:

Operating Systems: Red Hat Enterprise Linux 3.x, 4.x, 5.x, 6.x, 7.xCentOS, AIX, Fedora, Ubuntu, Windows

Scripting: Bash, KSH, Perl

Systems Management: Red Hat Network Satellite,Kickstart, Puppet Datacenter

Management: Racking, cabling, Cisco UCS, Dell standalone, blade chassis and blades

Security: Patch and Vulnerability Management, Policy Review and Implementation, System Hardening

Virtualization: VMware ESXi, VMware VCenter

Software: Apache, KSH/bash, Linux clustering, Microsoft Office Suite, NFS, NIS, Samba, Sendmail, SSH, IBM MQ, New Relic Monitor

Miscellaneous: AD, DNS, SSL,DHCP, NTP, FTP, SFTP,SCP,CIFS, Splunk, Nagios, NetBrain.

PROFESSIONAL EXPERIENCE:

Confidential, Southborough, MA

Sr. Systems Administrator

Responsibilities:

• I was the only Systems administrator for over 5 months supporting over 250 Oracle database servers, before I interviewed and built my team around.
• Maintained a data-centric environment focused on providing systems and services for a variety of research and development projects, along with the virtual environment.
• Created the platform in AWS (Amazon Web Services Tool) according to the requirement.
• Built application and Web servers in the AWS for migration setup and made sure they are interconnected with respective network elements.
• Worked with the Database team to get the necessary DB setup done in the AWS and make sure the DB import is done.
• Involved in Open Stack cloud for source code deployment.
• Worked on Storage processing and Network Resources in Open Stack through Data Center.
• Replicated the Jenkins build server to a test VM using Packer, Virtual Box, Docker, Vagrant.
• Provided general IT and workstation support. Build and support RHEL systems for infrastructure and projects.
• Installed servers, equipment into the racks and deployed network cables throughout the datacenter.
• Managed various infrastructure services, including: Active Directory, DNS, DHCP, NFS, and VMware.
• Updated production and test environments to RHEL 7 from RHEL 5.x and 6.x.
• Built a Red Hat Satellite server to provide kick start, patching services and to push configurations on to multiple servers at a time.
• Investigated whether systems may be consolidated to increase operational efficiency and reduce RHEL subscription costs.
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Redesigned and redeployed the Nagios implementation. Nodes automatically added/removed themselves via Puppet.
• Deployed a Jenkins environment for continuous integration/builds. All builds output rpm packages as artifacts.
• Wrote a script to automate the log rotation, and ensure server never went out of space.
• Installed and configured Splunk. Also wrote a script to send system logs from all the servers to central Splunk server.
• Worked with security team to get the users access right and also to standardize the login password complexity on all the servers through a script.
• Installed a configured LDAP server to maintain single sign-on for the users.
• Pursued root cause analysis for hardware/software issues with vendors and support teams.
• Configured and supported FTP server which has 43 clients and multiple vendors connected to it.
• Migrated servers from physical to virtual.
• Mounted windows share on Redhat Linux using CIFS option.
• Configured and maintained SVN server.
• Provided 24x7 on-call support.

Confidential, Memphis, TN

Sr. Unix/Linux system Administrator

Responsibilities:

• Part of a four person Linux team administering 2400 servers running Red Hat Enterprise Linux version 4/5 (VMware and standalone) in a 7x24x365 highly available environment.
• Primary administrator for over three hundred mission critical production RHEL servers.
• Integrated a puppet master into the Satellite to provide configuration management for RHEL servers and workstations.
• Involved in setting up Puppet Master/Client to automate installation and configuration across the environment.
• Wrote puppet modules to manage packages by ensuring they are installed properly and in some cases they were up-to-date with whatever was available in the repository.
• Owned relationship with Red Hat Sales Reps, acquired new subscriptions, determine future licensing needs and plan to purchase or remove subscriptions as needed.
• Upgraded Red Hat Satellite to latest level, configured custom channels to support the organization’s needs.
• Developed a RHEL Kickstart process for automated installs via both Satellite and DVD media.
• Planned and executed updates of all RHEL systems.
• Setup new ESX VMs and install RHEL; install and configure necessary applications and services to mirror original systems.
• Coordinated server patching to ensure compliance with security policies.
• Installed and configured JBoss application server.
• Implemented a Continuous Delivery pipeline with Docker, Jenkins and GitHub and AWS AMI’s, Whenever a new github branch gets started, Jenkins, our Continuous Integration server, automatically attempts to build a new Docker container from it, The Docker container leverages Linux containers and has the AMI baked in. Converted our staging and Production environment from a handful AMI’s to a single bare metal host running Docker.
• During an outage window, cutover to the new servers, worked with application and analyst teams to ensure everything is working as expected.
• Assisted systems engineer and DBA with writing the new BASH scripts to automate the processes and generate alerts on low disk space.
• Updated maintenance release procedures, and maintained SCP SQL files to production environment.
• Configured trip wire on all production, sftp and backup servers.
• Participated in 24/7 On-Call rotation.

Confidential, Thackerville, OK

Unix/Linux Administrator

Responsibilities:

• Updated all test, development and production environments including webs, storages and database servers and its services.
• Setup, installed and configured Linux OS (Red Hat, Fedora) and WINS server 2003 on new servers, in charge and QA of the weekly patches and monthly releases to keep the site update.
• Supported Apache severs, Samba, SSH, MySQL& Oracle databases, Nagios monitoring.
• Plan and execute effort to migrate SuSE Linux to RHEL.
• Analyze running applications on SuSE systems.
• Configured and administered SENDMAIL, relay server.
• Domain controller (Active directory), DNS, DHCP, IIS, Exchange server/Outlook email.
• Deployed a number of new services for our environment, including a datacenter management application, email/webmail, an IP address management solution, and a user authentication portal.
• Assisted systems engineer and DBA with writing the new BASH scripts to automate the processes and generate alerts on low disk space.
• Wrote scripts to automate ID creation and modification
• Member of on-call group to troubleshoot critical alerts, logs. Maintained the disk space, backups & network connectivity on / off hours.

Confidential, Rochester, NY

Systems administrator

Responsibilities:

• Owned and covered for the SQL guard and Escalation to R & D components: build & system startup, CLI, platform, script setup, network, system security, MySQL, IBM compliance.
• Tested new installations and upgrade releases with systems data, configurations and job scheduling.
• Tested MySQL database, optimize, analyze, generate data, traffic, disk space utilization.
• Test system, archive backup, restore, import export via Tivoli Storage Manager, EMC Centera, Amazon S3, Softlayer, remote syslog encryption, logrotate, email alert notification, audit process, custom reports.
• Developed and executed test cases to diagnose issues and bugs, creating test data when required.
• Defined, developed and reviewed test plan and test cases for assigned projects.
• Worked through the configuration files of Xinetd and daemon services.
• Worked on the concept of GIT cloning to create GIT repository.
• Worked on VERITAS Cluster Server and VERITAS Volume Manager.
• Strong Knowledge in implementation of enterprise storage solutions SAN (created VGs and LVs on SAN disks), NAS (mounted and shared NAS devices for multi servers), logical volume management (LVM).
• Installed the official build of MongoDB on other Linux systems from MongoDB archives.
• Worked with developer in design, debug, and reproduce customer issues, stimulate the test environment with data and variety of setup policy tasks.
• Wrote the BASH scripts to automate the processes monitor system logs and alert testing requirements.
• Tested Guardium product on databases: Oracle, MysSQL, DB2, Informix, Sybase, Postgres, Netezza on different architecture of UNIX/LINUX OS: RHEL, SUSE, AIX, HP, SOLARIS.
• Log defects, track status and verify resolution utilizing defect tracking system, via bugzilla, write the checklist test cases and using RTC source control system.
• Tested on many aspects: meta installer, auto installer, UID chain login basic test, smoke test, regression test on STAP Guardium product.
• Set up the policy, report and running query to capture violation, log in detail, log per match or terminate and generate alert to the groups/users.

Confidential

UNIX/LINUX System administrator

Responsibilities:

• Build and maintain IBM Power systems in support of an Oracle Database cluster.
• Reconfigure AIX OS to best support the needs of the Oracle database.
• Configure SAN storage to be used by the Oracle Database.
• Data Center Migration.
• Participate in team effort to reconstruct the production environment during the migration from VeriSign to SecureWorks facilities.
• Build and configure Red Hat Linux and IBM AIX servers.
• Installed and configure Raritan KVM, Serial, and Command Center equipment.
• Updated RPM, setup FTP, SFTP, SCP, RSA, remote syslog, monitor system health disk space, services of all environments such as test, development and production environments.
• Member of on-call group to troubleshoot critical alerts, system logs. Maintained the disk space, backups, restore & network connectivity on/off hours.
• Supported Apache severs, Samba, MySQL database, maintenance Domain controller (Active directory), DNS, DHCP servers.
• Wrote scripts to shutdown idle physical servers over the weekend effectively to cut down the electric bill to 30%.

Confidential

Systems Engineer

Responsibilities:

• Built and supported UNIX and Linux systems.
• Troubleshot problems reported by automated alerts and customer calls.
• Installed, upgraded and replaced hardware.
• As team security focal, assess incoming vulnerability advisories and coordinate appropriate responses to ensure server operating system integrity.
• Reviewed new and updated security policies, provided feedback to security team, and coordinated implementation on servers.
• Employed distributed tools to remotely manage 400+ servers.
• Worked through the configuration files of Xinetd and daemon services.
• Authored a comprehensive disaster recovery instruction manual for Sun systems.
• Participated in disaster recovery testing to validate all facets of recovering the customer’s environment.
• Authored and manage customer account documentation and team policies and procedures.