SUMMARY:

• 6 years System Administrator Experience . Monitoring application on servers. Linux /UNIX System Administration, Red Hat, Solaris. Create Virtual Linux servers and carryout complete Provisioning of these servers.
• Worked with tools like Splunk and, Perform system maintenance and scanning. Work with Project managers, business Analysts and Business Intelligence people. Worked as SME on various projects. Create/Manage User Account
• Create/Manage File Systems, Hardware/Software Break - Fix, VERITAS, Net Back-Up, Cluster Servers, Patch Management, Performance Management, Excellent Technical and Interpersonal Skills. Configure and built Red hat Linux machines, Create user accounts, set Kernel Parameters.

TECHNICAL SKILLS:

SOFTWARE: RedHat, Solaris, CentOS 5.x and 6.x, Debian. Cloud Watch, EC2, Ops Works, LAMP server, web servers, PHP, MySQL, FTP, BIND, NFS, NAS, Cisco IOS, VMware, vSphere, ESXi, Splunk, Puppet, Chef, Varnish, Package managements like yum, rpm, apt, NetApp Management and On Command console, JIRA and Remedy Ticketing System. Nagios, Big Brother, Dell Power Edge R200, R300, R310, R410, R610, 1950 and 2950, Dell Cloud Server C6100, C6220, NetApp, Flex cache, Jetstor

LANGUAGES: Shell Programming, Java, JavaScript, Visual Basic, C/C++, Bash, Perl

PROFESSIONAL EXPERIENCE:

Confidential, Takoma Park, MD

Linux system Administrator

Responsibilities:

• Plan, Build and provision Linux Virtual Environment
• Provide support for new applications and upgrades to existing systems
• Design solutions to technical problems and implementation of new systems or infrastructure changes
• Install and configure Chef Servers
• Basic understanding of Chef Analytics
• Configure nodes for Chef Compliance
• Wrote Basic chef recipes
• Install Puppet in a test environment
• Monitoring Puppet configurations
• Created basic Puppet Manifests
• Install and configure MySQL database and also configure Master slave replication
• Install and configure Puppet
• Responsible for installation, hardening, integration, patching, implementation, performance, and maintaining Linux production environment
• Monitor critical systems and take corrective actions prior to failures
• Install and configure Red Hat Satellite Services, RPM s
• Install and configure Apache
• Prepare for disaster recovery and ensure that appropriate backups are completed and tested
• Troubleshoot software and hardware failures and identify network problems
• Establish and maintain security and integrity controls
• Managed Production and staging Linux environment
• Experience managing and maintaining a production Linux (CentOS, RedHat) environment
• Experience setting up and maintaining a kickstart environment
• Experience with Windows Server and administering Active Directory
• Maximize Linux system availability and performance
• Support the installation of third party packages
• Managed VMWare ESXi 5+ Environment
• Experience setting up and managing MySQL infrastructure, including adding nodes, rebuilding and backing up
• Experience with production load balancing to many backend application servers
• Experience administering network services: CIFS, NFS, SMTP, DNS, etc
• Solid understanding of load balancing, horizontal scaling, UNIX - related network services, TCP/IP networking, DNS and HTTP(s)
• Proven ability to automate tasks and maintenance with a combination of custom scripts and the likes of Puppet, Chef or Salt
• Strong Perl, and/or shell scripting (Java a plus)
• Experience with Resin and/or Tomcat application servers
• Experience with Sensu, Logstash, Graphite and other monitoring/graphing tools

Confidential, Beltsville, MD

Sr Linux System Administrator

Responsibilities:

• Tune performance using sysctl.
• Install and configure Apache/Ngnix/Node.js
• Managed load balancing
• Install and configure database MySQL
• Install and configure Drupal and Varnish
• Coordinate backup and recovery in Linux system environment with Net Backup
• Monitoring and performance tuning
• Install and configure Puppet (Mater and slave ) servers
• Configure master slave replication in Puppet
• Configure Puppet Network
• Install a Release Package to Enable Puppet Labs Package Repositories
• Write and generate Manifest script for configuration automation in Puppet
• Create a Standard Puppet configuration Document for my Environment
• Configuration of Kernel parameters for MySQL Database
• Ensured connectivity to Servers and Network Administration
• Created Korn shell scripts to automate Cron jobs and system maintenance.
• Installation, Configuration and Administration of High Availability VERITAS Cluster Servers for failover and redundancy purpose.
• Installing and configuration of Splunk in a staging environment
• Configure Splunk for log Monitoring, log rotation, activity monitoring
• Configure remote access to splunk and send CLI to remote server
• Migrated Splunk config file to multiple remote servers
• Enabled Log debugging in Splunk
• Experienced in Troubleshooting Splunk search quotas, monitor Inputs, WMI Issues, Splunk crash logs and Alert scripts
• Document team SOP
• General Linux Application stack troubleshooting in Amazon AWS environment.
• Scripting and automating as repetitive tasks in production and staging environment.
• Supporting RDS instance of MySQL based database.
• Implementing Auto - scaling groups on Application servers to reduce cost and enhance optimal use resources. ffshore team on Application stack implementation on AWS.
• Supporting migration of Application from Apache servers to Nginx server.
• Configuring Nginx to terminate SSL connections with reverse proxy for enhanced Security, Caching and Scalability.
• Collaborated with development team to stream line and automate code push to production through git serve

Confidential, Largo, MD

Sr Linux Administrator / Application Support

Responsibilities:

• Experienced in Servers deployment with kickstart and spacewalk)
• Hands on data centers operations work (rack/stack, cable patching, maintenance)
• Install and configure software, Build and deploys with RPM, yum, jenkins
• Coordinate system/software installs & upgrades
• Document all the things (JIRA, Confluence)
• Wrote scripts with Bash, Perl, and Python
• Scheduled jobs with Crontab scheduler
• Create and managed user accounts
• Grant SUDO access to users and monitor users permissions
• View application and server logs files
• Troubleshoot application bottleneck
• Install and configure Web server and Middleware (WebLogic, JBOSS, apache, tcServer)
• Use Remedy ticketing system
• Experienced using Enterprise Monitoring tools (Tivoli, Net cool, Topaz, Guardium)
• Install and configure MySQL Server
• Developing system administration - related solutions
• Install new and rebuild existing servers, configure hardware.
• Contribute to, document, and maintain system standards
• Research and recommend innovative approaches for system administration tasks
• Install OSSEC for intusion detection System monitoring
• Perform security monitoring, investigate and troubleshoot issues
• Repair and recover from hardware or software failures
• Apply Linux and UNIX patches and upgrades on a regular basis
• Maintain operational documentation
• Perform periodic performance reporting
• Execute ongoing performance tuning, hardware upgrades
• Experienced with SAN storage use in VMware deployments: VMFS, NFS, RDM, iscsi
• Experience working with change management processes in a high availability environment