SUMMARY:

• Total IT experience of 11 years and RHCE - Red Hat Certified Engineer with 8.5 years of experience on production and development systems as Linux/UNIX System Administrator.
• Extensive experience in administering, installing, managing, and troubleshooting on Linux and UNIX Servers
• Linux - RedHat 3,4,5,6.x versions Oracle Linux 4,5,6.x versions
• Oracle VM Virtualization Support. OVM
• Configuring EMC Storage 5200, 5100, 5400, Port Zoning on SAN Brocade Switches Done Storage Disk array etc.
• Have real time Data Centre Experience involves deploying server, Implementing Storage Connectivity with servers etc.
• Rigorous knowledge in the field of Open Source technology implementation.
• Extensive experience over various domains including Mail Solution, Proxy/Gateway, Linux Firewall.
• Implementation and Maintenance and troubleshooting of live servers.
• Installed/Configured various services NIS, NFS, DNS, MTA’s, LDAP, and Apache on Linux operating systems.
• Firewall rules setup with IPCHAINS, IPTABLES, forwarding, Redirecting, Masquerading, State full fire walling.
• RPM Packaging done for Linux.
• Installation and configuration of Oracle 9 and 10G, RAC, MySQL etc.
• Configuration of LVM’s in Linux.
• Oracle Ocfs2 cluster ware, Redhat GFS.
• Administration of core servers for Parallels System Automation.
• Written and assisted in scripting languages like Shell, Perl, Python, Ruby.
• Strong problem-solver who can design and implement solutions. Ability to work under minimal supervision. Excellent written and oral communication skills.
• Experience supporting applications like Apache, Tomcat, Weblogic running on RHEL
• Experience in installation, configuration, deployment and management of Enterprise J2EE Applications in a clustered and non-clustered environment using Oracle WebLogic Application Server

PROFESSIONAL EXPERIENCE:

Confidential

Senior Linux Administrator

Responsibilities:

• Working as team member as a part of Confidential security initiative in various migration and adoption process.
• Working in deployment of proxy servers to divert traffic happening over 80/443
• Working in Netapp filer migration process from one zone to other with minimal impact for production servers.
• Co-ordination with various team members and application owners to make them understand the security violation and implementing the adoption process.
• Server patching and upgradation of various packages using Spacewalk
• Server hardening done by altering various security files using Puppet and Ansible.
• Creation of test setup before implementing any changes over production servers.
• Following Agile methodology strictly for implementation of various process.
• Working based of Jira process to carry out various tasks.
• Working on creating instances, allocating volumes and deploying applications on Confidential cloud.
• Supporting 1000 of servers in Hadoop cluster environments and helping them in resolving various OS and Performance related issues.
• Wrote bash scripts intensively to collect performance related data’s and to automate various frequent process.
• Implemented rapid provisioning and life cycle management for Redhat Linux using kickstart and Puppet.
• Used Puppet for central management of Linux configuration files and software package management.
• Scheduling of automatic repetitive Jobs, and Shell, Bash Scripts with Crontab.
• Created, Deployed and rolled out spacewalk from scratch and implemented in production environment.
• Wrote Puppet Manifests for hardening various servers.

Confidential

Senior Unix Administrator

Responsibilities:

• Worked In Implementation which involves Deploying Hardware(Hp Blade Gen9) (Cisco Confidential )
• Deployed and Configured EMC Storage including storage pool, Storage Group and Lun Creation.
• Configured EMC Storage 5200, 5100, 5400, Port Zoning on SAN Brocade Switches Done Storage Disk array etc.
• Created and implemented configuration of VMware Environment with multiple node clusters.
• Wrote bash scripts intensively to collect performance related data’s and to automate various frequent process.
• Implemented rapid provisioning and life cycle management for Redhat Linux using kickstart and Puppet.
• Used Hiera with Puppet 4 and above to achieve Site specific data out of manifests.
• Used Puppet and Ansible for central management of Linux configuration files and software package management.
• Scheduling of automatic repetitive Jobs, and Shell, Bash, Perl Scripts with Crontab.
• Installed and created Highly Available WebLogic server instances on top of Vm’s.
• Installed the application on AWS EC2 AMI, Red hat, Ubuntu Instances.
• Worked With Development team with API modules.
• Implemented PXE boot for easy installation of Vm,s in VMware
• Implementing and maintaining ESXi servers and VM’s for smooth functioning which involves troubleshooting of performance related issues.
• Perform RCA and create KM notes for internal reference.
• Applying patches on the servers regularly to eliminate security vulnerabilities.
• Monitored server performance using various monitoring tools like Oswatcher, Nagios etc.
• Configured and created snapshots of clones of LUNs using EMC Snap View
• Adding new Luns/Disks to the Vm’s / Physical machines as per the requirements.
• Troubleshoot various situations to solve complex network/server/application/infrastructure level problems on an individual level and interface with teams as needed to keep the uptime above 99.9%

Confidential

Senior Unix specialist

Responsibilities:

• Leaded a project which involved migration of VMWare environment to Oracle Virtualization(OVM)
• Architected in Configuring Network and Storage and Server Requirements for OVM environment as per Application need.
• Created Low level and High level design documents.
• Created technical Documents which involves the migration procedure.
• Involved in mass migration of data form old EMC Storage subsystems to new Subsystems
• Creating volumes, LUNs and implementing different RAID levels on the same
• Closely worked with VMware team to support Production, Development and Test Environments and also make sure uptime above 99.99%
• Proficiency in advanced features of ESX/ ESXi, vMotion, Storage vMotion, HA, DRS, VM Lab Manager, Update Manager and SRM.
• Experience in configuration and administration of Cisco, Brocade and McData SAN Switches using Cisco Fabric/Device Manager, Connectrix Manager Data Center Edition.
• Adding/expanding new storage to existing/new systems using LVM, VERITAS Volume management VXVM and Vxfs on Linux/SUN servers.
• Deployed Netact Application on top of the Environment with the help of Application team
• Worked on Projects based on VMware virtualization including VM creation, Application deployment, Presenting Luns to Hypervsior etc.
• Worked closely with Storage and Networking teams to ensure allocated SAN, Fiber and networking infrastructure reflects specifications laid out in the initial VMware farm design to ensure successful deployment.
• Performed Server hardening at various levels based on the requirement.
• Improved Linux OS deployment and management by creating customized kickstart scripts and installing Puppet.
• Created Shell, Python, perl, Ruby scripts to automate various process and for automatic data collection.
• Deployed and Managed Windows Server 2008R2, Server 2003, Server 2012.
• Implemented Active Directory and assisted in upgrading and migration on Windows Server.

Environment: HP C7000 Enclosures with Gen9 Blade Servers, Cisco Confidential Blades EMC Storage 5400 Fibre channel, Vmware Esxi and Oracle OVM.

Confidential

Senior Unix Engineer

Responsibilities:

• Providing support for issues on Oracle Enterprise Linux (UEK,UEK2), Redhat Enterprise Linux and Oracle VM.
• Supporting Linux issues on Exadata, Exalogic.
• Troubleshooting ASMlib issues.
• Supporting Upgrade of Kernel of OL/RHEL/OVM in case of support issues etc.
• Team of 40 and I am acting as a individual Senior contributor in the team.
• The day to day activities involves RCA for the server,Server problem resolution, implementing OVM environment, raising BUG, and coordinating with the BUG fixing team in order to resolve the BUG.
• Involved in building new VM's with RHEL 5.x,6.x and creating the templates in OVM
• RCA done with the help of COREDUMP, SOSreports, OSwatcher, SupportConfig, SAR, System
• Logs, VMPinfo etc.
• Installed and Deployed Oracle VM Manager and Servers from 3.0.1 to 3.3.2
• Worked on Various issues related to Oracle Virtual Machine Creation, Migration, Cluster formation, repository creation etc.
• Worked on Docker containers to automate multiple tasks.
• Providing support for various issues on Linux and Oracle VM.
• OCFS2, Ksplice support to the customers.
• Issue can be related to anything ranging from NFS, OCFS2, OVM, ASM, Network issues,LVM, Troubleshooting Server Crash, etc.
• Troubleshoot and fix Cluster related issues on Cluster Environment Like Ocfs2, Gfs.
• Mentoring Junior Engineers and aid them towards right solution.
• Monitoring Virtual memory, Swap management, and Disk and CPU utilization by using various monitoring tools.
• Worked on Various Cluster Platforms and Cluster filesystems like RAC, OCFS2, GFS.
• Wrote Shell and bash scripts to automate various process like data collection, scheduling multiple tasks etc.
• Very good working experience on Redhat Satellite Server, Oracle ULN with upgrading and patching of Servers.
• Installed and troubleshoot issue on HP UX operating systems as well.
• Troubleshooting network, application, and server related issues.
• Installations using PXE boot, Maintenances and troubleshooting hundreds of Linux Servers.
• Troubleshooting and configuring NAS and NFS mount points.
• Creating volumes, LUNs and implementing different RAID levels on the same
• Worked on Multipath issues right from OS level to hardware cabling for FC, ISCSI Storage types.

Environment: Almost all hardwares as its customer specific But intensively worked and collaborated on SUN hardwares, ZFS Storage, Exadata and Exalogic environments.

Confidential

Linux Administrator

Responsibilities:

• Worked as Senior Engineer supporting to client Comcast on infrastructure.
• Supporting Clients based on the Service Requests day to day job. Ticketing system using: RNW - Rightnow Web Technologies
• Preparation/alteration of KM documents and update into database
• Communicating with Customer on day to day job for solutions offered and updates to provide.
• Browse the Vendor support KBase Articles and implantation on relevant issues.
• Working with Vendor on specific cases which customer requests RCA.
• Worked issues on Server Performance and RCA/Diagnostics/Resolutions.
• Worked issues on Multipath generic/Vendor specific.
• Worked issues on Kernel upgradations and issues.
• Worked issues on Kdump Configuration local/nfs and bond interfaces to capture crash core for analysis.
• Worked issues on Bonding issues configuration/trouble shooting.
• Worked issues on Software RAID configuration/support
• Worked issues on LVM configuration/support.
• Exposure of analysis on sosreports, vmcore for finding the problems and resolutions.
• Worked issues on NFS, DHCP, keys, ftp, apache.
• Worked issues on Network interface/driver issues.
• Worked issues on FC/ISCSI storage at OS level.
• Worked issues on Server/software Installations, updates.
• Worked issues on YUM repository creation/configuration for packages installation/upgradation.
• Worked on Internal team requirements for setting up of Lab, PXE Server, Samba server, DNS, automated Scripts, ISCSI Software Storage. VMWARE virtual machines setup to replicate the customer issues.
• Supporting to Team Members if support is needed as team work.
• Maintained over 300+ servers which includes various applications.
• Created new filer mounts and attached using NFS. Worked closely with the storage group to troubleshoot issues pertaining to central storage.
• Implement security protocols, optimized performance and maintained system stability.
• Created documentation, diagrams and troubleshooting guides for network operations center staff. Served as advisor to help desk personnel and system administrators.
• Identified and resolved escalated issues with remote, on site Linux servers, Cisco switches/routers.
• Created and deployed logistical solutions and processes designed to streamline operations and related problem resolution.
• Responsibilities included ordering equipment, arranging install dates, managing install teams, approving invoices, and following up with field locations to ensure customer satisfaction.
• Maintained Application Servers like jboss, jdk, and also web servers like apache.
• Maintained Custom based Application Servers.
• Maintained production servers ensuring productivity at all times.
• Done package management ensuring the stability and safety of the patches released there by safe guarding the existing environment.
• Setup, configured, upgraded, troubleshot and maintained local network infrastructure. Resolved network issues, granted user access, setup accounts, and monitored LAN operations.
• Installed printers and other network devices, authored scripts designed to automate installation of new components. Provided end user support.
• Controlled and safeguarded classified software and data. Trained personnel on secure computing including SSL, viruses, Trojans, worms, e-mail security and safe Internet browsing.
• Monitored PCs/network operations and documented any security issues. Applied software patches, reconfigured networking settings, and instituted other information security procedures.
• Wrote login scripts to assist in facilitation of communication across the squadron.
• Performed proper destruction of unneeded classified information, and trained others on proper information disposal techniques.
• Troubleshot and resolved issues on Red Hat, Win 98, 2000, and XP machines containing classified data.

Environment: HP ProLiant and Dell Power edge servers.