SUMMARY

• System Administration experience for over 7yrs.
• Worked as a Subject Matter Expert (SME) in most projects.
• Involved with the planning and engineering an enterprise infrastructure with Virtual Linux Machines.
• Performed scheduled maintenance, patching over 750 virtual servers.
• Experienced in Deploying/Monitoring application on servers.
• Serves as a Manager in small projects and worked proficiently with PMP, Business Intelligence/Analyst.
• Experience in Cloud computing, BIG DATA, and Cyber security.
• Excellent technical and interpersonal skills.
• Experienced working with ITIL methodology.

TECHNICAL SKILLS

SOFTWARE: VMware EXSI, Linux ( Red Hat), Unix ( Solaris), Splunk, Hadoop, Nagios, Apache, Tomcat, WebLogic, WebSphere, PHP, MySQL, FTP, BIND, NFS, NAS, Cisco IOS,, Puppet, Drupal, Chef, Varnish, Package managements such as yum, rpm, apt, git hub, Jenkins, Remedy Ticketing System, AWS, Insible.

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

PROFESSIONAL EXPERIENCE

Confidential

Sr Linux System Engineer/Administrator

Responsibilities:

• Experienced in System Administration, Installation, Upgrading, Patches, Migration, Configuration, Troubleshooting.
• Managed Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on Linux (RHEL) systems.
• Configure Storage, Disk Management, Logical Volume Management (LVM) and Logical Partitioning.
• Configured BIND in DHCP & DNS configurations.
• Patching of RHEL5 and Solaris 8, 9, 10 servers for EMC Powerpath Upgrade for VMAX migration.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Load balancer configuration and tuning.
• Installed/configured IIS for performance tuning.
• Used IIS creating connections to a backend SQL database.
• Maintaining file systems and creating NFS.
• Configured the Kernel parameters and updated the Kernel for MySQL Database
• Troubleshoot connectivity to Servers and Network systems
• Wrote and executed Korn shell scripts to automate Cron jobs and system maintenance.
• 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
• Experienced using Red Hat Satellite server to deploy, monitor, update, and manage systems.
• Involved in complete Administration tasks on Red Hat Linux and documentation for the projects executed.
• Installed, monitored and supported Web and Application Servers on Linux environments.
• Good knowledge on operating systems architectures
• Created new file systems, mounting file systems and unmounting file systems, hands on experience in Tivoli Storage Manager (TSM), Disk Suite (SVM).
• Installed the VERITAS, installing and configuring the VERITAS cluster server (VCS), VERITAS HA using the VERITAS storage administration (VERITAS volume manager, VERITAS file systems) for the SAN configuration.
• Experience in installation and configuration of Apache, BEA WebLogic, LDAP, and mail servers.
• Configured, deploy, and hosted Apache web server in a production environment.
• Created and maintained user profiles, security access rights, disk space and process monitoring.

Confidential, STERLING, VA

Sr. Linux System Administrator

Responsibilities:

• Installed VMWare ESX5+ to perform virtualization of RHEL/SUSE/OEL servers.
• Built Virtual Linux machines and provision multiple servers
• Executed and built servers through KVM and Kick start
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux servers, servers and with vendors for hardware related issues.
• Configuration and troubleshooting - LAN and TCP/IP issues.
• Installed and configured Apache, BEA WebLogic, LDAP, and mail servers.
• Configured Storage Area Network (SAN), EMC CLARiiON, EMC Symmetric DMX, VMware.
• Experience in server monitoring, capacity planning, application monitoring with the help of Tivoli, HP insight, Nagios, Cacti, Zabbix.
• Expertise in Installation, Configuration of Package and Patch Management.
• Handling and generating tickets via the BMC Remedy ticketing tool
• Installation and configuration of Apache Webserver in a LAMP stack
• Migration of PHP and Ruby applications to a LAMP platform using RVM
• Troubleshoot OS issue using system message logs
• Configured log rotations
• Red Hat Enterprise Virtualization, Red Hat Enterprise Linux Openstack platform, VMware, and Amazon EC2.
• Puppet Forge and Git integration
• Shared the source files from puppet master to all puppet nodes through puppet fileserver.
• Installed and Configured Puppet Master/Agent Configurations and Masterless Puppet Configurations for High Scalability
• Registered the client server's to RHN network configuration
• Worked on installing and managing different automation and monitoring tools like Nagios, Splunk and Puppet
• Installed and upgraded Patches, Configuration, performance tuning on UNIX and system software & hardware.
• Efficiency in installing, configuring and implementing the LVM, and RAID Technologies using various tools like Veritas volume manager, Solaris volume manager.
• Experienced with Java Enterprise Application Servers such as IBM Web Sphere, Oracle Application Server (OC4J), BEA Web Logic, JBOSS, and Tomcat.

Confidential, BETHESDA, MD

Sr Linux Administrator / Application Support

Responsibilities:

• Managed User account on Linux servers
• Managed and Installed open-source software such as Apache, Tomcat, MySQL, PHP, Open LDAP, CUPS
• Daily monitoring and troubleshooting of issues using Nagios/Groundwork and Footprints ticketing system.
• Troubleshoot networking problems and maintain security and integrity of the systems.
• Troubleshoot network and infrastructure services such as VLAN, Routing, DNS, NTP, Syslog, and SMTP
• Applied OS patches and upgrades on a regular basis, and upgrade administrative tools and utilities.
• Configured and added new services as necessary.
• Maintained data center environmental and monitoring equipment.
• Performed performance tuning, hardware upgrades, and resource optimization as required.
• Configured CPU, memory, and disk partitions as required.
• Storage subsystems, SCSI, Fiber Channel, switches, iSCSI, HBAs, virtualization, zoning, LUN
• Solid understanding of storage networking fundamentals, concepts, and components
• Configured MYSQL Master Slave Replication
• Provided Tier III support during off hours and weekends
• Networked and interfaced configurations including knowledge of firewalls
• Installed, configured and managed all backup servers, clients, and agents.
• Managed disks to disks backup environment using Data Domain Deduplication.
• Assumed technical lead role on all Red Hat and Solaris Enterprise Systems
• Configured and maintained AWS EC2 and RDS instances
• Configured VCS to manage the MySQL database and NFS share and other applications
• SUDO configuration, SSH configuration, SCP Upgrade
• BEA WebLogic Server Configuration
• Install OSSEC for intrusion detection System monitoring
• Organized multiple conference calls for production issues
• Worked closely with architects in designing enterprise class solutions based on the principles of redundancy, data integrity, security and recoverability.
• In depth knowledge and experience of working on UCS hardware, UCS Manager, KVM console, worked with LAB engineer to test Netapp and EMC SAN storage.
• Installed VMware vSphere ESXi, build VMs using VMware, performed cold and hot migration.
• Executed VM cloning, physical to virtual migration
• Allocated and configured storage on venter using VMware tool.
• Deployed Virtual Machines and use Clones, Snapshots, templates.
• Participated in capacity planning for the infrastructure
• Provided tools and procedures for resources provisioning.
• Created Vlan and moved VMs between VLAN.

Confidential, RESTON, VA

Linux Administrator

Responsibilities:

• Strong knowledge of LVM and Red Hat Satellite servers.
• Managed F5, JVM & JBOSS, JBOSS EWS
• Experienced with HP-UX, Tomcat, Apache, Apache Cassandra, JVM, JBOSS, F5 and MySQL.
• Developed and maintained installation and configuration procedures for new server builds.
• Troubleshoot and maintain legacy applications.
• Performed update/upgrade of changes to our website
• Resolved assigned Change Requests/Problem tickets
• Monitored the groups ITSM (Remedy) ticket queue to ensure tickets are worked and resolved IAW established SLAs
• Created CMR and followed proper process to validating and closing project/SR.
• Installed and configured of Netscape and Apache web server and Samba Server.
• Configured DNS, NIS, NIS+, NFS, sendmail.
• Implemented RAID 0-5 solutions using Dell PowerEdge Servers
• Enabled IP Tables Firewalls and blocked ports to ensure system security
• Configured Access Control Lists (ACL) on directories to enforce effective team collaboration.
• Created Local Yum Repositories to support Package Management with Yum and RPM
• Installed and configured secure FTP daemon to support a FTP-based Yum repository
• Installed and configured NFS - based Yum repository. Used Logical Volume Management
• Commands to create, manage, grow and extend LVM volumes. Created and activated Swap volumes to enhance system performance.
• Configured Swap volumes for automatic mounting to survive a Power cycle at system reboots.

Confidential, VA

Linux System Admin

Responsibilities:

• Installed and upgraded AIX and installed patches via NIM.
• Attended to user tickets on the queue
• Designed and implemented enterprise network printing solution including application printing running on AIX 5.3, Windows NT 4.0 / 2000.
• Involved in performance tuning of RS/6000-AIX using various tools. Troubleshooting all hardware and AIX related problems on RS/6000.
• Involved in administration, installations, tuning and performance of AIX and Microsoft Window servers.
• Supported applications on AIX, managing volumes, file systems and configuring the connectivity networking.
• Experience with TCP/IP, FTP, DNS, NIS, BIND, Sendmail, sys logging, UNIX account management and file permissions
• Administered enterprise backup using VERITAS BACKUP Exec.
• Created Users and Groups for certain departments. Configured DHCP (Dynamic Host Configuration Protocol)
• Configured and troubleshoot routers like Cisco 2600, and LINKSYS RV016 VPN router.
• Involved in the maintaining/ troubleshooting of SMS servers and Enterprise servers.
• Installed, configure and maintain various web applications and rolled out to production after testing the web applications.
• Provided support for the systems in the Data Center and in the production environment.
• Also, provided support for the SMTP mail server and the network components using the firewalls.
• Writing Shell scripts for automation of job, system monitoring and error reporting.
• Involved in web hosting and web designing.
• Maintained DNS and NIS server.
• Supported existing production environment including various applications and planned to improve performance with growth.