SUMMARY

• Above 6+ years of IT experience in System Administration under heterogeneous environment of Redhat Linux 4.x/5.x/6.x/7.x, CentOS6, SuSE Linux 10/11, Sun Solaris (8/9/10), HP - UX (11.x), AIX (5.x), and Windows 2003/2008 with a proven record of:
• Proficiency in VMW Installation and monitoring Virtual environments with ESX 4. XServers and Virtual Center.
• Experience in installing, configuring and monitoring VERITAS Cluster Server (VCS), Redhat Cluster Server, Sun Cluster Server and HP Service Guard in High Availability Environment.
• 3+ years of experience in Perl scripting i.e Conducting Automation using the Standards, guidelines and structured methodology in testing the application.
• Knowledge on different VMware products like VMware workstation, VMware server, VMware player, VMware Converter and ESX server.
• Worked on Citrix Xen App and knowledge of Citrix Web Interface.
• 1 year of experience in Splunk, Production Support, Release Management.
• Storages SAN, NAS, software and hardware RAIDs, iSCSI, NFS, SMB, CIFS, FTP, OHSM, Amanda.
• Good knowledge on Oracle PL/SQL, CQL (Cassandra Query Language), MySQL.
• Troubleshooting network issues and reducing the security breach.
• People and project management - motivated self-starter with strong leadership and teamwork skills.24/7 on-call availability and mobility. Keep abreast of current technology.
• Multitasking - accept multiple tasks, prioritize them, and achieve results while displaying a strong work ethic.
• Work well under pressure either with minimal supervision or in a team.
• Strong communication and presentation skills. Strong inter-personal skills and technical acumen. Focus on details.

TECHNICAL SKILLS

Operating Systems: Red Hat Linux 4/5/6/7, SuSE 10/11, Ubuntu 6.x/7.x, Solaris 11/10/9/8, HP-UX (11.x), IBM AIX (5.x, 6.x) &Windows 2000/2003/2008.

Installation: HTTP, NFS, FTP, Kickstart.

Desktop Support: Windows and Mac OS X.

Scripting: Perl, Bash and shell.

VMware: ESX, ESXi, Server.

DNS and Directory Services: BIND, LDAP, NIS.

Web: Apache HTTP Server, Apache Tomcat, mod ssl, mod rewrite.

Storage: SAN, NAS, software and hardware RAIDs, iSCSI, NFS, SMB, CIFS, FTP, OHSM, Amanda.

Email: SMTP, POP, IMAP, Postfix, qmail, sendmail.

Application: SAP, ORACLE, MySQL, Websphere, Centrify.

Monitoring: Nagios, Cacti.

Splunk Modules: Splunk6, Splunk Cloud, Splunk Enterprise.

Troubleshooting: Wireshark, ping, tcp dump, telnet, netstat, netcat, nmap, arp, CDP.

Network: firewalls, IDSs, IPsec, VPNs, iptables, tcpwrappers.

Application: PGP, SSL, SSH, sudo.

File System: SELinux, ACLs.

Backup: tar, cpio, dump (ufsdump), amadmin.

PROFESSIONAL EXPERIENCE

Confidential, Irving, Texas

Linux Administrator

Responsibilities:

• Splunk configuration that involves different web application and batch, create Saved search and summary search, summary indexes.
• Involved in handling various Incident and request related to the application.
• Create Splunk Search Processing Language (SPL) queries, Reports, Alerts and Dashboards
• Problem record analysis and solution providing.
• Monitored Database Connection Health by using Splunk DB connect health dashboards.
• Modified Perl modules so they don’t have hardcoded passwords and databases. Rewriting Perl scripts as required. (Changing the old paths).
• Developing Perl modules to load the financial statements of different banks, implementing business validation on statement level, deriving discrete and LTM (last twelve months) statements based on available statements of an issuer and calculating ratios for analysts based on predefined formulas.
• Developed Perl scripts to automate frequent reports for the users.
• Developed wrapper scripts in Unix shell script for the AUTOSYS batch jobs.
• Monitoring the Job scheduled as per AUTOSYS and ensuring all the Jobs responding as per scheduled, on a failure of any of the Jobs chase to the team on issue.
• Auditing Crontab files for the server migration support.
• Deployed Puppet for automated management of machine configurations.
• Moving NAS mounted filesystems to provide shared filesystem between servers that need shared filesystems.
• Working on Perl modules, turning them in to RPM’s, so they can be deployed on new VM’s.
• Assisted in development and delivery of automation, monitoring and event correlation for the Enterprise Data Center Design (EDD) Project.
• Configured LDAP clients on server test and troubleshoot for maintaining network and data security
• Implemented Puppet modules to automate configuration of a broad range of services.
• Wrote puppet manifests for deploying, configuring, and managing collected for metric collection and monitoring.
• Build automatic provisioning system with kickstart and Puppet.
• Worked on Citrix XenApp and knowledge of Citrix Web Interface.
• Automated daily tasks through korn and Perl scripting.Examples include: reporting invalid login activity, mailing errors from error report, removing old print files.
• Automated monitoring of system resources.Examples include: automatically mailing of errors from error report, scripting monitoring disk usage on Linux boxes, using WebSM to monitor process availability, scripting monitoring print queue status, scripting monitoring of invalid login attempts.
• Automated tabulating of data from remote systems for capacity planning involving creating a Korn shell script to ftp over files from remote boxes.This allowed management to see the current machine utilization and accurately predict when hardware capacity expansion was required.
• Expertise in troubleshooting and resolving issues in enterprise Citrix environment, Including Web Interface, application enumeration and performance issues, Printing and provisioning issues, for internal and external clients.
• Involved in Data Migration from Remedy 6.3 to 7.1.
• Approved or disapproved security policy changes or additions to comply with Financial industry requirements.
• Approved/Disapproved requests for security deviations.
• Regularly Summarized and sent performance reports to management on Word and Excel formats as requested for security planning.
• Drafting and installation of Checkpoint Firewall rules and policies

Confidential, Phoenix, AZ

Linux System Administrator

Responsibilities:

• Monitoring and tuned the system to achieve optimum performance levels.
• Hardening Internet facing systems to provide maximum availability and security.
• Administered large scale network comprising Sun and Linux servers including server installation, network configuration, securing the system, repetitive task automation using Perl and Bash scripts, troubleshooting and hardware and software upgrades.
• Deployed Puppet for configuration management to existing infrastructure.
• Managed Puppet infrastructure through major version upgrades. Refactored Puppet code to leverage new features.
• Tied together disparate pieces to build a fully automated bare-metal to production server build system using RequestTracker(RT) with the AssetTracker plugin as the system of record. DNS, DHCP, kickstart, and puppet tied into the system.
• Installation, setup and configuration of RHEL, CentOS, OELand VMware ESX on HP and IBM hardware.
• Setup security using SUDO, TCP Wrappers, Firewalls etc.
• Maintaining VMware ESX servers using VMware Virtual center
• Creation and management of VM’s using KVM.
• Performed Splunk administration tasks such as installing, configuring, monitoring and tuning.
• Active monitoring of Jobs through alert tools and responding with certain action w.r.t to logs, analyses the logs and escalate to high level teams on critical issues.
• Worked on log parsing, complex splunk searches, including external table lookups.
• Configured and administered Tomcat JDBC, JMS and JNDI services.
• Designing and maintaining production-quality Splunk dashboards.
• Performed configuration and troubleshooting of services like NFS, NIS, NIS+, DHCP, FTP, LDAP, Web servers, Samba server, and Apache server
• Splunk configuration that involves different web application and batch, create Saved search and summary search, summary indexes.
• Produced comprehensive architecture strategy for environment mapping in AWS that involved Siteminder, Scripps' AIM Application, Community Moderation Broker (CMB), Echo commenting apps etc.
• Produced a comprehensive strategy using AWS Identity and Access Management (IAM) Role for community platform systems and successfully implemented the same setting precedence for other teams to follow suit.
• Set-up and support of servers in a high availability, heterogeneous Linux, Windows, and VMware environment with an emphasis on security and using well documented, automated installation and support procedures.
• Production monitoring with Nagios, Centreon, and MySQL Dashboard; with DRAC and Dell OMSA on server/storage environment.
• Responsibilities included designing and developing new back-end services, maintaining and expanding our AWS infrastructure, and providing mentorship to others on my team.
• Designed and wrote tools in Ruby to automate third-party application configurations.
• Seamlessly transitioned AWS infrastructure from EC2-Classic to VPC, overhauled AWS accounts to follow latest security best practices, reduced AWS costs by over 30%, and wrote documentation.
• Performance monitoring of the servers and applications using TOP, FREE, VMSTAT, TCPDUMP& IOSTAT.
• Monitoring system services using NAGIOS and Cacti.
• Worked with configuring and troubleshooting NIS.
• Setup NFS, FTP, SFTP and Samba for File Sharing on Linux and Windows servers.
• Setup and configured Apache in Red hat and CentOS.
• Installed and configured various services like DNS, LDAP, DHCP, Send mail, Apache Web Server, NIS, SSH, Telnet, HTTP, RPM Package Management and others.
• Configuring servers to synchronize with the NTP Server.
• Expertise in setting up Nagios Monitoring software.
• Involved in configuring iptables firewall and hardening Linux systems for system security.
• Performed daily system monitoring, verified the integrity and availability of all hardware and server resources, and review system and application logs.
• Managed systems, processes, and procedures tied to day-to-day and long-term facility maintenance, repair, and operations.
• Migrating approximately 2,000 applications from Mainframe XP farm to Presentation Server 4 farm.
• Migrated retail applications, proprietary applications, and web applications using SMS push and Windows Installer.
• Created application packages (.msi files) in Citrix for installation on multiple servers.
• Deployment of applications using Altiris, Citrix Packager, and Windows Installation Manager.
• Published all migrated applications on new Citrix Presentation Server 4 farm.
• Maintaining documentation for Citrix and application installs.
• Coordinated testing with end users of all applications.

Confidential, Richmond, VA

Linux System Administrator

Responsibilities:

• Develop long-term UNIX/Linux strategies for the enterprise environment to stay current with technology and provide the required functionality to the organization
• Installation, configuration and upgrade of Solaris, Redhat Linux, HP-UX 11i and IBM AIX operating systems.
• Configured and installed Solaris, HP-UX and Redhat Linux Servers using jumpstart and kick start.
• Implementing file sharing on the network by configuring NFS on the system to share essential resources.
• Worked on building and supporting Solaris8, 9 & 10 on Sun Midrange platforms and IBM AIX Midrange platforms.
• Worked on performance tuning in Solaris, Linux & HP-UX.
• Experience working with LDAP/Kerberos authentication and Access Management control in mixed environments using tools like VAS.
• Server Migration from physical to Virtual (P2V). NIC bonding using bonding kernel module. Managing internal DNS server record addition and deletion. Sound experience in Linux LVM, VxVM and Solaris SVM.creating sparse root/ whole root zones. Sharing software’s and files using NFS, Autofs.
• Coordinated Hardware configuration, installation and management as well as. Configuration of ILOs and Console connections for HP Gen 8 Blade and Rack mounted servers
• Used VMWare to test various technologies by creating multiple virtual machines with different operating systems.
• Deployed Puppet, Puppet Dashboard, and Puppet DB for configuration management to existing infrastructure,
• Redesigned and redeployed the Nagios implementation. Nodes automatically added/removed themselves via Puppet.
• Developed Puppet modules to automate deployment, configuration, and lifecycle management of key clusters.
• Developed FAI scripts which bootstrap systems from 'bare metal' to functioning Puppet clients.
• Performed package and patching management and debugging in all flavors of Unix & Linux.
• Experience in using puppet and chef for OS configuration and automation.
• Installed, configures, maintained and troubleshooting all technologies in openstack cloud.
• Develop Linux/UNIX shell scripts to accomplish redundant tasks to simplify in distributed administration.
• Providing workflows and other information required in the development of code of the Perl scripts
• Creating VMware Templates for newly released Linux releases.
• Configuring and managing the RAID levels under VxVM.
• Provided on-call support as the primary point of contact for service availability/support qualifications.
• Setting up and maintaining Domain Names System (DNS) servers.
• Configured volume groups and logical volumes, extended logical volumes for file system growth using Logical Volume Manager (LVM) commands.
• Worked on Servers Migration Project from Old hardware to new hardware (e.g. E2900 to M5000 )Adding and configuring disks and creating new file systems
• Used Splunk tool in order to analyze the logs in the applications.
• Create Splunk Search Processing Language (SPL) queries, Reports, Alerts and Dashboards.
• Implementation of advanced partitioning schemes like Software Raid and LVM.
• Creating users with root’s privileges and also users with limited root’s privileges called the sudo users.
• Disabling telnet and enabling SSH. Manually setting up sshd authorized keys.
• Creation and management of VM’s using KVM.
• Developed Perl and Shell scripts for upload of data feed into database.
• Installation and configuration of Redhat Linux servers in which Virtual Machines are built using VMware templates and Physical servers using Kickstart process.
• Performed day-to-day Linux administration such as user accounts, logon scripts, directory services, file system shares, and permissions etc.
• Experience in configuring Emulex & QLogic HBA on RHEL along with dm-multipath and Power Path.
• Setup NFS, Samba and FTP File sharing setup on Linux and Windows servers.
• Provision and optimize of infrastructure, compute, network and storage services with OpenStack.
• Integrate cloud support dashboard with helpdesk tools.
• Extensively involved in creatingRemedy Forms, Active Links, AL Guides, Filters, FilterGuides, and Escalations for work flow.
• Interacted with BMC and internal teams to help solve critical issues.
• ConfiguredRemedy Action Request System 7.x,Remedy Asset Management (7.x) and Remedy Change Management (7.x).
• Tested and deployed software running on cloud.
• Supporting web development and database teams for day to day operations.

Confidential, Virginia Beach, VA

Linux System Administrator

Responsibilities:

• Installation of hardware, fiber cabling, network cabling.
• Evaluate performance of systems to see that they meet business needs. Installed, upgraded and maintained Windows and Linux operating systems and configuration of RHEL, CentOS, OEL and VMware ESX on HP and IBM hardware.
• Manage, install patches and other software packages using UP2DATE, YUM and RPM.
• Used different UNIX commands to run, maintain, setup schedule work, protect and rescue Filesystems.
• Added, modified and/or deleted users and group’s account on local systems using tools and manual procedures and Setup and configured Apache in Redhat, Fedora and CentOS.
• Perform daily system monitoring, verify the integrity and availability of all hardware and server resources, and review system and application logs.
• Monitored Network services using NAGIOS and Setup configuring and troubleshooting NIS and BIND and support of servers in a high availability, heterogeneous Linux, Windows, and VMware environment with an emphasis on security and using well documented, automated installation and support procedures.
• Working with Active Directory for windows domain networks. Which included most windows server operating systems as a set of processes and services.
• Upgrade, monitor and maintain remote access Citrix farm running on Presentation Server 4.5.
• Installed, setup and maintained all VMware VI3 hosts running on HP Proliant file servers located in the data center.
• Handling and generating tickets via the BMC Remedy ticketing tool.
• Implementation of Remedy Mid-Tier, with customized auto-assignment of tickets from end user web submissions.
• Successfully performed physical to virtual conversions on 90% of all Window servers.
• Managing disk storage using Veritas Volume Manager 4.1/5.x/6.x, Linux LVM and Solaris Volume Manager.
• SAN Administration: configuration, creating RAID groups, maintenance, creating storage group and troubleshooting on EMC Clarion.
• Working experience in upgrading and configuring a variety of hardware including network cards, SCSI cards, HBA’s, copper and fiber cables, memory, drives, CPUs, backplanes.
• Installed and maintained Windows 2003 Server for office network.
• Dealt with Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota Management, wrappers. And provide timely solution to users on issues of network environment & software problems.
• Prepared Bash Scripts for Automation of Server tasks. Extensive development of maintenance scripts to monitor system status, providing web-based, e-mail notification of system problems such as security breaches, loss of network connectivity, mail queues, user activity, disk allocation, and application availability.
• Performed occasional off-hours and remote support. Managed the Web Hosting dept. and Administrated all user domains, and accounts.
• Remote Administrator for Cisco Pix firewall.
• Patch Administration -- Adding / removing patches as per User /System Requirements. Building High-end Servers (Eg: T5220, T5240, M3000, M5000, T2000, and M9000), managing and trouble shooting andServer firmware upgradation.
• Used TightVNC to remotely solve server problems
• Worked as part of Linux Administrators Team to support a no. of Redhat Servers. Also responsible to install and administer Operating System and Application packages.
• Designed the infrastructure and implementation of Telemarketing solutions for 24x7 environments. This includes the overall management, Servers configuration, Database administration and development support for the Telecommunication Solutions which includes Payment Gateway integration & Helpdesk module. Prepared diagrams and documentation for the whole project. Established and wrote the company’s standards and best practices document for all Telecom applications and database environments. This outlined all standards for the Admin/DBA Operations Group including installing/upgrading servers, administration and monitoring, automation scripts using Perl, naming standards, policies and practices.
• Performed all duties related to Redhat system administration DNS, DHCP, NFS, NIS, LDAP, user account maintenance, backup & recovery, Auto-mounting, License Management, Printer configuration.