SUMMARY

• Around 9 years of US IT experience in Linux/Unix System Administration in heterogeneous environments.

• Expertise in installation, support, configuration, performance tuning, troubleshooting and maintenance of Linux using Kick start installation and using Puppet for management
• Hands on experience working on Cluster, VERITAS Volume Manager VxVM , VERITAS Cluster Services VCS , and Hadoop Cluster
• Worked on networking protocols TCP/IP , SCP, SFTP, HTTP, NFS, GPFDIST, GPHDFS, etc.
• Hands on experience in installing and maintaining of Splunk on servers.
• Upgraded manufacturer recommended firmware for BIOS during annual kernel patching schedule
• Experienced working on virtualization using VMware ESX
• Experience in using LVM for creating volumes and file systems.
• Worked on Remote login methods like DRAC. ILOM and XSCF
• Installed patches and updated them for security enhancement addressing vulnerabilities
• Installed RPMs, patches and upgraded OS kernel versions when necessary
• Performed tasks for automating and ease of administration using Python/Shell scripting. Checked-in Scripts to subversion for version control
• Dealt with application/hardware/storage and database teams on-call support
• Hands on experience on tuning, administration and load balancing on web/application servers.
• Excellent skills in analyzing, designing, implementing and system integration.
• Experienced in documenting issues and possible solutions with Confluence Wiki/Jira
• Familiar with monitoring and debugging tools Ganglia, Splunk, SAR, Strace, Patrol, JAMS.
• Teaming up with the clients/vendors to provide 24/7 technical support
• Strong verbal, written communication skills and good with Visio for infrastructure

TECHNICAL SKILLS

PROFESSIONAL WORK EXPERIENCE

Confidential

Red Hat Linux Administrator

• Maintenance of Linux and Solaris servers in Dev/QA/DR/Prod environments Installed tools like Black-Duck, Splunk, Fabric, Autosys, Blade-logic, Deployit etc.
• Extensively automated configuration management with Puppet master servers in different datacenters Worked with Likewise to connect to Active directory for Linux/Solaris servers authentication.
• Standardized user management with groups for ease in administration Scripted semi-annual Kernel and monthly non-kernel patches for Linux using Satellite server and Python Fabric.
• Documented Kernel patching for Solaris machines.
• Engineered system-dump utility to capture snapshot of servers, daily and archive them for several months on remote Jump server Generated reports for Auditing as per requirement, using Puppet manifests.
• Modules are written to suit for all environments, including on-premises Cloud User management made easier with consolidated Sudoers file managed in Puppet. Managed and administered users with ACL configuration to limit access across servers.
• Built servers with kick-start and automated post-install scripts with Python Fabric.
• Scripts checked-in to Subversion for better usability and version control mechanism. Lead Hadoop infrastructure maintenance on Dell servers as certified Dell Technician.
• Dell Open Manage Essentials deployed on every Dell server with SMTP alerts on email Increased resources on VMs for web and middleware servers. Configured Virtual IP for accessing databases in clustered environments Installed and managed Veritas Volume Manager and Veritas Cluster services on Solaris and Linux servers.
• VCS has been setup for Oracle databases to accommodate into service groups and performed Failover testing when configuration change been made Documented annual DR testing on Confluence WIKI along with MOPs for various standard activities Compiled and made Python 2.7.8 version with all necessary modules to support excel utilities.
• Build an RPM for installing it using Satellite server Installed HeartBleed and Bash Bug Errata fixes on all servers to avoid vulnerabilities.
• Confluence JIRA used to track progress on infrastructural activity Splunk tool used for reporting and documenting changes over behavior of servers.
• Amazon Web services AWS instances were built using AMI created with FINRA compliance standards.
• Puppet modules rolled-out for consistency DNS records and network bond configuration changes performed for databases and middleware servers Supported VMware based on-premises Finra Cloud service FCS and Eucalyptus servers using general modules.
• Installed packages on POCs for Hadoop and engineering. Participated in meetings and peer-reviews for adding Puppet manifests that suits every environment Involved with team on scheduled changes and incidents using BMC Remedy, to meet SLAs. Monitored jobs using JAMS 3.0 on audit reports from brokers to NASDAQ Infrastructure layouts and procedures were documented using Visio.
• Involved with inter-team projects managed with Microsoft Project and Agile workflow methods.

Environment: Red Hat Enterprise Linux 5.6/5.8/6.1/6.3, Solaris 10, VMWare, Redhat Satellite server 5, Likewise, Puppet, Fabric, Python, AWS, Eucalyptus, Blackduck, Bladelogic, Splunk, Confluence JIRA/Wiki, JAMS, Microsoft Project/Visio, Subversion, BMC Remedy/Patrol, OMSA, Veritas Volume manager, Veritas Cluster services

Confidential

Red Hat Linux Administrator/Big Data administrator

• Involved in Data warehousing Appliances Administration including Confidential
• Built Hadoop nodes with compliance and added them to existing clusters.
• Installed Ganglia for monitoring health of nodes for improving performance.
• Involved in upgrading to Cloudera manager 4 and Cloudera Hadoop 4.
• Upgraded Java JDK as needed Regular maintenance of databases and grooming storage for effective utilization.
• Worked on connectivity between Hadoop clusters and Greenplum using 'gpfdist' and 'gphdfs' protocol.
• Performed network tests between Hadoop clusters and Green plum for data transfer.
• Recommended changes in network for better productivity Monitor and troubleshoot jobs running on Netezza and test benchmark results Application support on Grid computing Data stage environment.
• Responsible for jobs running on Big data appliances on a rotation basis on-call Documented procedures and created Visio diagrams for better understanding environment.
• Mentored new-hires on Big Data technologies Dealt with vendors on cases when troubleshooting on Netezza and Greenplum.
• Involved with NZ query plan changes with Vendor User management for accessing environment. Vacuum analyzing GP and NZ databases to free caching memory on weekly maintenance

Environment: Dell Power edge R710/R720/R720xd/C2100, Blade M series, EMC Greenplum 6-rack/4-rack, IBM Netezza Twin Fin 12/24/48, IBM Datastage, Grid computing, RHEL 5.7/6.3, PostgreSQL, Cloudera Hadoop, Cloudera Manager, Ganglia, EMC Dial-home, IBM director, ETL Virtual machines, Isilon NAS, Java/Jdk.

Confidential

Red Hat Linux administrator/Datacenter Migration administrator

• Involved in Data center migration for QA and PROD environments
• Built from scratch whole datacenter with FINRA compliant servers. Migrated databases from different datacenters with newly built servers.
• Built 22-node and 45-node HADOOP Clusters with Cloudera manager for managing services and roles
• Implemented standards for creating data base file systems. Proposed change in Storage allocation policy for Oracle databases so as to utilize efficiently.
• Installed RHEL with kick-start process on servers of different hardware for Oracle, People soft and Web applications
• Involved in VCS cluster setup and managing databases into appropriate service groups
• Created LVM, VxVM file systems for Oracle databases and tweaked multipath configurations.
• Troubles hoot issues on Veritas Volume Manager and document them. Identified bugs in Veritas and installed rolling patches accordingly.
• Worked with Hardware vendors/technicians when necessary. Diagnosed and resolved recurring issues on memory modules with DSET and documented solutions.
• Worked and coordinated with storage, data base, networking and application teams for meeting SLAs
• Worked on BMC Remedy ticketing to report status of the tasks.
• Installed LIKEWISE to centralize user accounts/groups with Active Directory
• Configured Network bonding and Virtual IP configuration for applications. Recorded TCPdumps to access network speeds.
• Worked with VMAX and VNX storage units for carving file systems on Veritas and LVM
• Document changes and updated visio diagrams to display network layouts
• Formulated scripts using Python Fabric to automate HADOOP builds. Reported status on project using Microsoft Project
• Created scripts for automating file system creation on diffeent volume managers. Installed packages and patches as recommended. Performed semi-annual kernel patching.
• Installed Open manager, MegaCLI to monitor health of Dell servers
• Installed compliance tools like Qualys, Bindview and BMC Patrol to check compliance as per requirement

Environment: DELL Power edge R910/R710/C2100/720/720xd, HP DL-690, EMC VMAX/VNX/Clarion, RHEL 5/6, Kick-start, Satellite server, Solaris 10, Veritas SFHA 5.1, VXVM 5.1 SP1,VCS, VxVM, Q-logic HBAs, LVM, SSH, SCP, Megacli, OMSA, Likewise, BMC Patrol/Remedy, Ganglia, Hadoop Cloudera, Java/JDK, Oracle 10g/11.2, PeopleSoft.

Confidential

Red Hat Linux Migration Engineer

• Migration of data from 3Par storage to EMC VMAX storage Working on V2V migration hands on experience with virtual machines on EMC storage
• Perform Operating system patching and upgrade power path firmware Migrated Solaris and Linux servers on VCS cluster configurations Migrating from old disk to new disk on the run.
• Created partitions, physical volumes, volume groups and file systems. Configured and worked with FTP, NFS and SCP protocols for file sharing Migrating data from large disk to small disk at Logical Volume level Configured ILOM on servers for remote login.
• Configured networking with NIC bonding. Installed drivers of open Migrator firmware and Qlogic/Emulex HBA drivers.
• Performed host-based migration using Open-Migrator tool on physical/virtual servers on the fly.
• Creating and editing of logical volume manager LVM filters for Linux/Hp-UX Scan for new 2TB LUNs and utilize for building file systems on them Installing DB2 on client machines, performance tuning, database modeling and database design of the production databases.
• Synchronized data between frames using r-sync and Open Migrator tools Worked with native multi-path on RHEL 4/5 Installed packages and patches on VCS nodes.
• Mirrored volumes of data on Solaris using SVM and VxVM. Add swap space to existing volume groups and created volume groups Scanned and verified host bus adapters HBA when installing new storage.
• Upgraded drivers for various platforms. On call support for Pre migration and Post- migration schedules Troubleshooting issues related to clients on migration and document necessary changes Create and implement method of procedures to perform migration Updated drivers on Netapp devices. Supported web applications and databases on production environment. Editing existing startup scripts.

Environment: RHEL 4/5, Sun Solaris 9/10, HP-UX 11.21, LVM, VxVM, SVM, VCS, GFS, OCFS, EXT3, ILOM, NFS, FTP, SCP, r-sync, Qlogic/Emulex HBAs, EMC VMAX, Symetrix, HP proliant servers, Sun servers, Dell power-edge servers, Netapp, WebSphere 6.0, Vmware Esx server.

Confidential

Red Hat Linux Migration Engineer

• Installation of Linux Servers using Satellite Server, System Imager and kickstart on VMware ESX 3.5 server and physical servers. Installation of new OS using system image of Golden client.
• Administration of RHEL 4/5 which includes installation, configuration, testing on both physical and virtual machines.
• Data center migration using System Imager on Linux servers P2P .
• Installation and configuration on System imager server on RHEL 5.
• Copy the image of production server, Configuring RAID and build the new server using the image on system imager server with PXE boot. Also copied file systems across images.
• Migrating the VCS, Oracle RAC and Red hat Clusters with file systems across the Data Center, which includes configuration of new IP, VIP and Private IP.
• Changing the EMC Pseudo names to make sure all nodes in cluster have same psuedo names.
• Adding Oracle ASM disk to the server. Creating and managing native LVM. Resizing LVM groups and restoring data. Disk and file system management through LVM including GFS.
• Used System imager open source to capture Linux production images before build. Installation, configuration, support and upgraded patches for Red hat Satellite server.
• Installation and configuration of Redhat Device Multipathing. Deport/Import Volume Groups.
• Upgrading Veritas Volume manager and EMC power path and drivers for Netapp.
• System configuration and Administration of Red Hat Linux/SuSE.
• Migration of Applications on Java .Worked on database creation
• Patches and package management in RHEL 4/5.
• Shell/perl scripting for job automation on System imager and jobs.
• SSH remote installation and iLOM configuration on build servers. Troubleshooting/Networking issues after migration. Monitoring of online systems and correction of any errors.
• Worked with Oracle group to understand and check their application running on Linux. Work with application team to start applications and resolve any issue.
• Kernel parameters tuning based for system performance and application/database requirement.
• Made change orders to get approval from various departments before implementing. Up gradation of Fibre channel Q-logic HBA cards before servers migrate.
• Identify Emulex HBA installed and change after migration for ease and compatibility with prod servers.
• Coordinated with application team for their tests on testing and development servers before reaching the production servers
• All system backups and restores using NetBackup on Linux machines. SAN and iSCSI disk configuration on Linux. Performance tuning of the Linux virtual machines
• Disk and file system management thru Logical Volume Manager in Linux and Veritas Volume Manager in Solaris. Hard disk Usage statistics and reporting. Systems installations and upgrades. Migration and troubleshooting of logical volumes.
• Involved in multipath design on EMC power path for migrated servers and Netapp mounts.
• Installed and Configured Apache, Web Server and Web logic Application Server in Linux Platform. Server and application Load balancing. Performance tuning on application.
• Supporting the customer on a real-time ticketing system. Completion and close of trouble tickets using CA Remedy and Service Desk, for online operational issues
• Monitoring nighttime and weekend batches, initiating fixes and restarting jobs that aborted
• Handled any unexpected outages/problems. Maintaining data center security and confidentiality issues. Manages process with documentation and SOPs whenever it is necessary

Environment: Red hat Enterprise Linux RHEL 4/5, logical volume manager, Veritas cluster server/volume manager, Global file systems, Red hat Cluster server, Apache, SSH, FTP, SCP, RPMs, CA heath/Service Desk, SAN, TCP/IP, RHN Satellite server, Hp Proliant DL 385/DL 585 blades, Dell power edge servers, EMC Power path SAN, Netapp, Q-logic/Emulex HBA cards, HP 9000/5400/2440, WebSphere 6.0, and Vmware Esx server

Confidential

Sun Cluster Engineer

Review existing Sun cluster on Sun Fire servers and x-64 servers with Sun Solaris O/S and IBM storage.

Identify and resolved shared storage reservation conflict issues in existing setup.

Installed and configured a 3-node Sun cluster 3.2 on SPARC platform Created resource groups using ZFS and device groups using Logical Volume Manager LVM Updated fibre channel HBA drivers for Q-logic adapters QLE 2462 Worked on Dual port Fiber Channel QLE adapters for hosts Managed device groups and resource groups on Cluster and created Zones.

Installed Sun Explorer software and ran it at regular intervals Installed EIS-DVD/SRAS software to review and certify Sun Cluster configuration

Created and managed Quorum device on IBM storage DS 8100 with SVC 2145 on LUNs Partitioned the storage for resource pools and quorum devices for reconfiguration online

Tested cluster configuration in various scenarios and recorded the yielded results Switched the resource groups over the nodes successfully and tested failover of nodes in the cluster Copied and mirror file systems across clustered Logged explorer results and backed it for further reference

Patched Sun cluster 3.2 U1 and Solaris 10 with a patch cluster Worked on IPMP and MPxIO paths using EMC products for both public and private network Checked the status of Cluster with quorum votes and online resource groups on nodes at regular intervals to get certified, for licensed support

Performed Power path upgrade on nodes when necessary. Identified bugs and fixed it with recommended patches.

Certified the Sun cluster with various tests at scenarios Used ILOM to enter console and check the nodes for panics Mounted UFS and ZFS file systems on resource groups and tested for switching during failover

Monitored error logs, core dumps and messages for errors/conflicts on SCSI reservation issues while switching nodes Supported few servers with RHEL on IBM Web logic applications Trouble shooting issues with SCSI conflicts and global fencing

Environment: Sun Solaris 10 u7, RHEL 3/4, IBM SVC 2145, IBM DS 8100 SAN, Sun Fire T 1000, QLE 2462, Sun Cluster 3.2 u1, ZFS, Dell Power edge servers, Hp blade centers, Logical Volume Manager, FC NIC cards, Solaris Zones, SSH, Telnet, IPMP, ILOM, MPxIO, EIS/SRAS, AS400, DNS, FTP, Sun Explorer.

Confidential

LINUX / UNIX System administrator

• Building new servers with Red HAT Linux 5 and configuring Oracle 10g databases.
• Configured Jumpstart Enterprise Tool kit to provided Jumpstart installations and performed upgrades and troubleshooting of servers remotely.
• Installed, configured and managed Red hat enterprise Linux, administered,
• Maintained Linux troubleshooting Hardware, Operating System Application Network problems and performance issues.
• Support Dell servers with I/O analysis on Linux operating system
• Support Apache web application and configuration, troubleshooting with script for modules on all the testing servers.
• Mirrored volumes and copied file systems across servers.
• Partitioning of LUN and created volume groups for cluster nodes.
• Trouble shooting file system issues on EMC SAN and co- ordinate with Storage teams.
• Maintained, deployed and managed databases and configured with necessary requirements.
• Created and managed and administered logical volumes.
• Worked with EMC power path for multi-path.
• Created NFS, UNIX admin mount point, and patch installation on all servers.
• Worked with NetApp NAS and EMC SAN for storage.
• Administration and Troubleshooting Linux servers running business critical applications and their database
• Setup Linux Systems on user's side including installing Application tools
• Administration involved creating domains, adding/deleting system components remotely using SSH.
• Installed and Configured Volume manager to implement Point-in-time snap shots and remote mirroring.
• Created several scripts on korn and bourne for ease of administrative tasks.
• Installed and configuration and maintenance of Veritas Netback up 5.0. Upgraded from Netbackup 5.0 to 6.0.
• Managing disk storage with Veritas Volume Manager 4.1 on SAN.
• Setting up the thresholds on the parameters CPU/Memory/Disk/Network and alerting the users when the usage reaches the thresholds.
• Used SUDO to enhance security among the users. Upgraded firmware patches.
• Tuning the kernel parameters based on the application/database requirement.
• Performed migrations from Linux environments from old physical server to new physical server P2P
• Performed physical server to Virtual server migration P2V of Red Hat Linux servers onto VMware ESX frames ad Virtual Machines.
• Implemented NIS and NFS for administrative and project requirements

Environment: Sun Solaris9,10, Red hat Linux3, 4, Vmware Esx, Sun Fire 6500, 4800,V890, V880, V490,V480 VCS 4.0, Dell enterprise servers, Intel, Veritas Volume Manager 4.1, Disaster recovery and backup, Veritas Net backup, SUDO, SSH, Scripting, DNS, NIS, NFS, Apache, Tomcat, Send mail.

Confidential

Linux System Administrator

• Installed and configured RHEL OS on servers, workstations and I/O devices.
• Configured VERITAS Netbackup on filesystems for Backup and recovery.
• Responsible for DNS Servers and Clients troubleshooting system and DNS issues.
• Installed and configured RHEL on new hard drives.
• Administered NFS mounts. Migrated data on to new NFS servers.
• Created disk groups, volumes, volume groups using VERITAS Volume Manager.
• Involved in disk configuration and disk crash recovery using format and fdisk.
• Installation, Configuration and Administration of VCS. Installation and monitoring of Logical Volume Manager, Sun Cluster Server in SAN Environment.
• Performed performance tuning and file system tuning procedures for Sun and RHEL servers
• Scheduled cron jobs for job automation.
• Involved in preparation of functional and system specifications. Estimated Storage requirements for applications.
• Solid understanding and hands-on experience of UNIX sar and stat tools. Involved in load balancing.
• Working knowledge of Veritas Volume manager .Host-side management of SAN/NAS hardware.
• Installing, management of Packages and kernel Patches.
• Responsible for tuning and monitoring the performance of applications. Worked on observing devices, analyzing applications and debugging the applications.
• Used scripts to analyze and troubleshoot servers health
• Setup various user profiles, environment variables/security to ensure smooth operation.
• Responsible for tuning and monitoring the performance of applications. Worked on observing devices, analyzing applications and debugging the applications. Supported applications on 24x7 when needed.
• Used remote login using SSH, XSCF and ILOM. Load balanced web servers and application servers using tools.
• Maintained Web application servers like Web logic on few servers.
• Installed apache and tomcat on few servers and administered for applications.

Environment: Sun Solaris 9, 10, RHEL 3, NFS, Sun Enterprise 4500, E25K, E15K, EMC SAN, NAS, EMC Clarion, Sun Enterprise 250, Dell poweredge blades, Hp Proliant blade center, Shell scripting, VERITAS net backup 5.0, SSH, VERITAS Cluster service 4.0,MySQL, Tomcat, Apache.

Confidential

UNIX System Administrator

• Installing, upgrading and configuring Red hat Linux
• Setting up clients on UNIX for heterogeneous network environment comprising Sun Solaris
• Administered log files and frequent monitor on the memory usage
• Configured remote login on to the Dell Enterprise servers.
• Regular disk management like adding / replacing hard drives on existing servers / workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Managed few applications using shell scripts.
• Worked on patching servers for kernel upgrade
• Maintaining appropriate file and system security like firewalls, monitoring and controlling system access, changing permission, ownership of files and directories, maintaining passwords, assigning special privileges to selected users and controlling file access, monitoring status of process in order to increase the system efficiency
• Resetting passwords to ensure security and maintaining database for various clients
• Configuring distributed file systems and administering NFS server and clients
• Installing and partitioning disk drives. Creating, mounting and maintaining file systems including VxFS to ensure access to system, application and user data. Performed auto mount administration.
• Scheduling system related cron jobs. Monitoring the health of system/server on performance

Environment: Solaris 5.9,5.10, 8.0, RHEL, Sun Cluster 3.1, Sun Enterprise E420R, E3500 , Solstice disk suite, HP, Samba, , Veritas Netbackup 5.0, Fujitsu Workstations, Veritas Volume Manager 5.1, NIS, NFS, Shell Scripts.

Confidential

Unix System Administrator

• Installation of Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Configuration of Hardware and Software RAID
• Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• Installed windows on Intel servers. Worked on Samba server.
• Installation of patches and other software packages
• Installing OS on workstations and servers using kick-start process.
• Performed system administration of UNIX servers by using Operating Systems of Solaris 8.
• Performed OS upgrades and Patch loading as and when required.

Environment: Sun Solaris 5.8, DNS, NFS, Sun Fire 6500/4500/V880 /V480/E420R/E450/E250, Sun StorEdge L280, DHCP.