PROFESSIONAL SUMMARY

• 8+ years of Strong Experience in Unix - Linux, Confidential AIX, VMware Administration, Shell Scripting with expertise in Red-hat Linux (4/5/6/7), SuSE (11,12) Windows Server 2003/2008/2008 R2/2012.
• 2+ years of experience working with Cloudera Hadoop Administration and AWS.
• Expertise in application, maintenance and support of Linux/Unix Lab, Development, Stage and Production servers.
• Monitoring and maintaining Cloudera Hadoop Cluster and its services like Hive, Hue, hbase, HDFS, Sentry, Yarn, HS2 etc
• Worked on EC2, S3, AMI, RDS, ELB, IAM, EFS, EBS in AWS Environment.
• Knowledge about security roles and groups in AWS.
• Applied changes, subject to some review, to current information technology infrastructure following established processes. Sometime also contributed to the development of new processes.
• Applied information analysis to resolve low to medium complexity infrastructure problems and low to moderate in risk.
• Delivered infrastructure technology for multi-functional business requirements with limited interrelationship to the overall business process.
• Had some interaction with functional business partners on tactical issues and limited contact with suppliers.
• Completed routine changes and improvements to existing processes, with some review.
• This include modifying existing operating systems, designs, or program code.
• Networking communication skills and protocols such as TCP/IP, NFS, DNS, LDAP, DHCP, NTP and SMTP
• Experience in Installing Firmware Upgrades, Kernel Patches, system Configuration, performance tuning on UNIX systems.
• Good knowledge of IPMP, DMP, SSH configuration, Job Automation.
• Installed, maintained, upgraded and supported Apache/Tomcat and JBoss application servers on Redhat Linux and windows systems
• Installing, configuring, and maintaining Apache, Samba, NGINX, WebLogic and WebSphere (Middleware) application servers and, Oracle and MySQL database technologies
• JBoss including installation, configuration, management and troubleshooting
• Experience on Webservers such Tomcat 4.x, 5.x & Apache Server 2.x, JBoss4.0.x, and integrating them with WebLogic 11.x servers.
• Experience in Installing Firmware Upgrades, Kernel Patches, system Configuration, performance tuning on UNIX systems.
• Troubleshooting and problem solving of Linux/UNIX servers, debugging OS failure, Apache, JBoss, Sun One, Confidential WebSphere.
• Participated in various roles as a team member, at times includes facilitating team meetings.
• Occasionally participated on multiple teams.
• Assumed proportionate share of responsibility for an effective team and understood good teaming concepts. Participated on projects as a team member or leads small well-defined projects with a small team, taking on project tasks, giving work direction and may assist in deciding how work will be done.
• Established reports and monitors project measurement parameters.
• Supported projects that require contact with other Information Technology departments at the unit, division, or enterprise level.
• There is some interaction with functional business partners on tactical issues and limited contact with suppliers.
• Completed routine changes and improvements to existing processes, with some supervision. This may include modifying existing operating systems, designs, or program code. Responsible for communicating and recording change documentation. Sometime created change processes for new situations or business requirements.
• Assisted or made technical or project based decisions pertaining to elements of the infrastructure.
• On call support on rotation basis for all 24x7 Application running Servers.

WORK EXPERIENCE

Sr. System Administrator/Application Support

Confidential

Responsibilities:

• Updating CDH, Cloudera Manager and Cloudera agents in cluster.
• Resolving user incidents relating to mapreduce, spark job, impala failure, hive/hue performance issues, Rstudio session issues, SAS application related issues etc
• Good understanding of SAS software and all 3 Tiers (Compute Tier, Mid-tier and Meta-data server)
• Configuring Load-balancing for Hue instances with NGINX.
• User management in Hue and setting up Hue database.
• Working knowledge of Kerberos and Active directory.
• Installed and configured Rstudio, jupyterhub, h20 steam/flow.
• Worked on monitoring tools like Splunk and Dynatrace.
• Worked on Git, Jira, Service Central and CA Service desk.
• Maintain, monitor, and support the hardware, software, network, and storage supporting server-based products.
• Implement and support product-related processes and scripts.
• Plan and manage new installation and upgrades to hardware, software, network and storage.
• Successfully collaborate with both internal data center teams and partners, as well as outside vendors and clients.

IT Analyst

Confidential

Responsibilities:

• Had responsibility for communicating and recording change documentation.
• Created change processes for new situations or business requirements.
• Monitored and applied changes to current information technology infrastructure, under minimal supervision, following a process or developing new processes.
• Applied information analysis to resolve low to moderately complex infrastructure problems.
• Delivered infrastructure technology for multi- functional business requirements with limited interrelationship to the overall business process.
• Identified and applied appropriate new information technology infrastructure components within a diverse environment as required to support strategic business plans and processes.

Unix/Linux Administrator

Confidential, TX

Responsibilities:

• Administration of RHEL and AS 3, 4, 5 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5.
• System and Network Administration training, which include but is not limited to installing Linux, Solaris, UNIX internals, NFS/NIS management, and DNS Configuration
• Wrote shell scripts for automated installations, to extract logs.
• Installed, configured, and maintained WebLogic 11.x and Oracle 11g on Solaris & Redhat Linux.
• Creating, installing and configuring Zones, LDOMs in Sun Solaris 10using Jumpstart.
• Performs Integration, Deployment and maintenance support of system integration activities.
• Involvement in application development and Technical Support on Smart Cards based projects along with customization, development, administration, validation and upgrades of our software products.
• Worked with multiple card related tools like Card Admin, POS Bridge, SMSC Toolkit, and MKS Integrity Client.
• Validating the cards by Activating, Polling the Services to the card based on the requirements of the customer.
• Installed Op5 and Nagios on multiple Platforms and deployed the products on the monitoring tools.
• Provides coordination with technical presentation to the customer. Perform data backups and disaster recovery operations.
• Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIM Power 4, 5 and 6 systems and Upgraded Maintenance level as well.
• Involves in maintenance support and troubleshooting of system deployed with customers.
• Adding SAN using multipath and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Installing Jboss application, JDK 1.5, 1.6, setting up and testing Ingrain device.
• Upgraded Redhat Linux OS on Websphere, JBOSS and Oracle database servers from V3, V4 to V5.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
• Installing, configuring VeritasNetbackup 6.5 on Solaris, Redhat servers, creating polices, scheduling jobs.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets
• Involves in maintenance support and troubleshooting of system deployed with customers.
• Study existing business process and organizational procedures on regular basis.
• Provide technical support to other teams, members and associates.

Environment: Sun Solaris 8, 9,10, Red Hat Linux 4.0, 5.0, Veritas Volume Manager 4.1, 5.0, Solaris Volume Manager, NAGIOS, Op5, SOAP UI, Veritas Cluster Server 5.0, Windows 2003/2008 server, AIX 5.3, 6.1, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 3.5, VMware Infrastructure 3.5

Linux Administrator

Confidential, NC

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of OEL, Linux, Sun Solaris, AIX, HP-UX systems.
• Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux.
• Administration of RHEL and AS 3, 4, 5 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Installation and configuration of Web Services and JBoss4.0 Application Server on Solaris and Linux boxes.
• HP service manager 9.3, 7.11, automated OVO monitoring.
• Installing, administering Redhat using Xen, KVM based hypervisors.
• Adding SAN using multipath and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Installing, configuring, deploying Websphere 6.1, JBoss 4.2 application servers on both Sun and Linux boxes.
• Installed and verified that all AIX/Linux patches or updates are applied to the servers, Installed ESR updates.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.
• Installation and configuration of VxVm 5.0 and creating disk groups, volumes, increasing volumes.
• Installed, configured, and maintained WebLogic 10.x and Oracle 10g on Solaris &Redhat Linux.
• Performance monitoring with Sar, Iostat, VMstat, MPstat and Other Tools.
• Took unix native backups and restore using ufsdump, ufsrestore& tar commands.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485, ML Series, SAN(Netapp), Solaris 8,9,10, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6, HP SIM, VMware Virtual Client 3.5, AIX 5.2, 5.3, VMware Infrastructure 3.5.