SUMMARY

• Overall 8+ years of experience in Redhat Linux Administrator,more than2 years of experience asCloud/Hadoop Administrator.
• Having good knowledge in Cloud technology like AWS services, Openstack(IaaS), Openshift(PaaS).
• Worked exclusively on Apache and Cloudera Distribution ofHadoop.
• Worked on setting up Name Node High Availability for major production cluster and designed automatic failover control using zookeeper and quorum journal nodes.
• Experience on Commissioning, Decommissioning, Balancer and Managing Nodes and tuning server for optimal performance of the cluster.
• In depth knowledge and good understanding of Hadoop daemons: Name Node, Data Node, Secondary Name Node, Resource Manager, Node Manager.
• Having good knowledge in configuration management using CHEF.
• Having good understandingof DevOps practice.
• Having good experience in Shell Scripting.
• Having conceptual knowledge in Kafka,Jenkins and Dockers.
• Excellent interpersonal and communication skills, technically competent and result - oriented to problem solving and leadership skills.

TECHNICAL SKILLS

Operating Systems: Red Hat Linux 5/6, Solaris 10/9/8, IBM AIX (5.1, 5.3, 6.1), VMware 6.x

Hardware: Dell R710,910, M620, Cisco UCSB-B200-M3, UCSC-C240-M3L,E25k, E15k, T-Series, M-series IBM P-Series.

Cluster: Red hat Cluster, VERITAS Cluster Server, Sun Cluster, Hadoop Cluster

Virtualization Products: Xen, KVM, Solaris Zones, LPAR, VIO, VMware

Cloud Technology: AWS, Openstack, Openshift

Configuration Management Tool: CHEF

Version Control System: GitHub, JIRA

Tools: Service-now, Perceiver, TPM

PROFESSIONAL EXPERIENCE

Confidential, Irving TX

Senior Linux/Cloud/Hadoop Administrator

Environment: OS - RHEL 6, Volume manager - Linux LVM, ASM, Cluster - VCS/RHCS/Hadoop, Hardware - DELL,Automation - CHEF. Cloud - AWS

Responsibilities:

• Provide end - to-end architectural design and solution for new project in Linux platform.
• Build new physical baremetal and Virtual machines on LINUX.
• Worked as primary system administrator forAWS infrastructure.
• Experience in configuring AWS EC2, VPC, Auto-scaling and S3.
• Having good knowledge on AWS services.
• Experience in Installation, configuration, deployment, maintenance, monitoring and troubleshooting Hadoop clusters in environments such as Development Cluster and Production using Apache Hadoop and Cloudera Manager.
• Experience on Cloudera Hadoop upgrade from CDH4.3 to CDH5.3 and applying patches.
• Commissioning and decommissioning of data nodes, Rebalancing of Hadoop cluster. Rack Aware Configuration and File system management/monitoring.
• HDFS support and maintenance.
• ManagingInfrastructure configurations using CHEF.
• Having good experience inShell Scripting.
• Experience in Openshift(PaaS).
• Worked with partner team - network/storage team for load balancer and access setup.
• Installed, configured and managed Veritas Cluster in Linux servers.
• Create change and coordinate with advisory board for project implementation.
• Work with automation services for build automation and configuration management.
• Built bare metal servers for ORACLE RAC, installed ASM libraries and configured ASM disks.
• Performed documentation of architectural design, build engineering documents and SOWs in sharepoint.
• Planned and upgraded Veritas Storage Foundation from 5.0 to 6.1 version on major platform

Confidential, Minneapolis

Sr. Linux /Cloud/Hadoop System Administrator

Environment: OS - RHEL5, 6, Solaris 10, AIX 6.1/7.1 Volume manager - Linux LVM, SVM, ASM, Cluster - VCS/RHCS/SUN. Cloud computing - AWS,Automation - CHEF, Hardware - DELL, Virtualization - KVM/Xen,VMware, NAS, ORACLE RAC

Responsibilities:

• Onsite UNIX SME - provided 24x7x365 on call support for Confidential UNIX infrastructure.
• Set up, tune, deploy and manage the environments for servers in prod, stage, QA
• Installation, Configuration and administration of Linux, Solaris and AIX servers.
• Lead SWAT effort with vendor/application teams on any high severity incidents.
• Worked as primary system administrator on production and non-production AWS infrastructure.
• Experience in configuring AWS EC2, VPC and Auto-scaling.
• Responsible for ensuring the overall heath and monitoring the Linux and AWS servers in client environment.
• Experience in Installation, configuration, deployment, maintenance, monitoring and troubleshooting Hadoop clusters in environments such as Development Cluster and Production using Apache Hadoop and Cloudera Manager.
• Rack Aware Configuration and File system management/monitoring. HDFS support and maintenance.
• Extensive knowledge of Hadoop Architecture, MapReduce, YARN and also various components like HDFS, Namenode, Datanode, YARN, Resource Manager and Node Manager.
• ManagingInfrastructure configurations using CHEF recipes.
• Review with Engineering team for new platform turnover.
• Perform problem management on monthly inflow of incident/events.
• Work closely with Confidential SME/build/provisioning team for infrastructure changes and documentation.
• Performed package and patching management and debugging in all flavors of UNIX with help of UNIX patching team.
• Perform disk management task on ORACLE RAC, provided huge page fine tuning solution for RAC DB servers.
• Provided support for 3000+ AIX/Solaris/Linux based operating system.
• Provided training to peer team members on core Unix technologies.
• Monitor and maintain system stability either by manual shell script or by monitoring solutions.
• Define escalation procedure and mentored offshore team on UNIX recover effort.

Confidential, Minneapolis

Sr. Linux /UNIX System Administrator

Environment: RHEL 6.x/5.x/4.x, Solaris 8/9/10, Redhat cluster, VCS, Sun cluster, Openstack, VMware, SAN Multipathing (DM Multipathing, MPIO, Powerpath), Dell, Cisco UCS

Responsibilities:

• Handling more than 6000Unix Servers.
• Perform system boot procedures.
• Experience in building Servers using Satellite.
• Experience in troubleshootingHigh Availability Solutions usingRed Hat Cluster Server in Linux, Veritas Cluster Server in Solaris/Linux and Sun Cluster in Solaris environment.
• Having knowledge in Openstack.
• Configured yum repository server for installing Patch bundles/Packages from a satellite server.
• Performed Troubleshooting Red hat virtualization (Xen/KVM) issues.
• Configuring and troubleshooting network bridges in Xen/KVM.
• Performed Kernel tuning with the sysctl.
• Performed Disk management with the help of LVM (Logical Volume Manager) in Linux and AIX.
• Management of Red Hat Linux user accounts, groups, directories and file permissions.
• Registering a Client with Satellite.
• Configuring and managing Global File System (GFS/GFS2) in Linux servers, Zettabyte File System (ZFS) in Solaris and GPFS (General Parallel File System) in AIX.
• Configured and maintained Network Multipathing in Linux and Solaris.
• Configured and maintained DM Multipathing in Linux
• Implementation of RAID techniques and creation disk groups and volumes, plexes using Veritas Volume Manager.
• Managing disks and file system using Logical Volume Manager inLinux/AIX,Veritas Volume Manager(VxVM) and Solaris Volume Manager (SVM) in Solaris Servers.
• Hands of experience on SRDF cluster
• Diagnosing & troubleshooting of various Dell/UCS/Solaris/AIX Hardware Problem.
• Performance monitoring using SAR, Iostat, VMstat and MPstat on servers and also logged to perceiver monitoring tool for graphical view.
• Backup management Recovery through Legato.
• LPAR and VIO management in AIX
• Configured VIO servers and related LPARs through HMC, Dual VIO Server testing.
• Extensive experience in creating NIM environment which includes creating the NIM master and installing the operating system on NIM clients.
• Worked on VMware ESX server, created VMs and installation of OS in virtual machines, KVM to VMware migrations, and troubleshooting performance issues.
• Coordinating with various back end support teams like Redhat, Oracle SUN, Veritas, IBM for Root Cause Analysis (RCA).
• Established and maintained network users, user environment, directories, and security.
• Initiating/Attending Bridge call with customer for sev1 & sev2 issues & working till issues get resolved.
• Provided 24/7 on call support on Production Servers.

Confidential

Associate Infrastructure Engineer

Environment: RHEL 5.x/4.x, Solaris 8/9/10, Sun Fire, Logical Volume Manager, Veritas Netback, SAN Multipathing.

Responsibilities:

• Handled more than 2000 Servers.
• Implementing with Customer recommended Latest Patches, Packages and Impact Analyzing.
• Installation & Administration of Redhat Linux server.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm.
• Performed Disk management with the help of LVM (Logical Volume Manager) in Linux.
• Performed Troubleshooting Redhat virtualization (Xen/KVM) issues
• Troubleshooting Network File System(NFS) issues.
• Performing Installation/Upgrade, System Startup & System Shutdown as needed.
• Installing Emulex, Lpfc HBA drivers and adding Storage LUNs for SAN.
• Installation and configuration on Zones.
• Creating and managing diskgroups,Volumes and Creation of VXFSand mounting FS.
• Implementation of RAID techniques and creation disk groups and volumes, plexes using Veritas Volume Manager.
• Managing disks and file system using Veritas Volume Manager(VxVM), Solaris Volume Manager (SVM) in Solaris Servers and using Logical Volume Manager in Linux servers.
• Volume resizing on Veritas Filesystems as per requirements.
• Root disk Encapsulation and Root Mirroring using VXVM.
• Monitoring and Trouble Shooting Veritas Cluster.
• Maintaining system logs and ensuring system security & integrity.
• Automating jobs by using Cron.
• Troubleshooting for filesystem crash, disk space problems, and network problems.
• Monitoring Virtual memory, adding additional swap space as needed.
• Performance monitoring using SAR, Iostat, VMstat and MPstat on servers.
• File System administration and management like monitoring various logs, file system sizes etc.
• User creation/administration using LDAP.
• Maintaining and changing file systems & disk assignments using Meta disk.
• Processes administration and management like monitoring, start/stop/kill various processes/sub process.
• Vendor Management (Red hat, Oracle -Sun, HP)