SUMMARY

• 8 years of Strong Experience in Linux Administration, Shell Scripting with expertise in Red Hat Enterprise Linux 4, 5, 6 Solaris 9,10, Windows 2003 and familiar with IBM AIX 6.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, System and Network Security and Troubleshooting of Linux/Unix Servers.
• Experience in implementing and monitoring High Availability environment using Red Hat Cluster, Veritas Cluster Server, Sun Cluster and Oracle RAC. Experience in an established Websphere/Weblogic environment comprises of Firewalls, Load Balancer, Web Servers, App Servers and Databases (DB2, Oracle, MS SQL Server).
• Configured and used Kickstart, Jumpstart and NIM to install OS. Configured and maintained VMware.
• Strong experience in VERITAS Clusters in supporting high availability mission critical servers.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager (VxVM), Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
• Proficient in Networking and configuring TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP,SCH.
• Good knowledge on various cloud computing products such as Amazon (EC2), OpenStack.
• Good knowledge on SAN, EMC CLARiiON CX, EMC Symmetrix DMX, EMC Mirror View, Hitachi data storage.
• Expert in Installation, configuration of Patches and Packages.
• Solid understanding of RPM, building, maintaining, and installing packages. Installed and configured IBM WebSphere Application Server 6.1 on AIX, Linux and Solaris.
• Proficient in installation and configure system file systems such as EXT, and software RAID managers such as Logical Storage Manager.
• Experience in HTML, Java Script, providing day - to-day user administration like adding and deleting users and managing users queries.
• Utilized Python in the handling of all hits on Django, Redis, and other applications.
• Performed research regarding Python Programming and its uses and efficiency.
• Experience in installation, configuration, Deployment and management of web and enterprise applications on BEA Weblogic Server 8.1/9.x/10.x and JBoss Application servers.
• Experience in VMWare VSphere Client 4. Experience in VMware Installed and monitored Virtual environments with ESX 3.xserversand Virtual Center 2.X
• Strong in troubleshooting, monitoring, training and 24/7 production support in mission critical environments Worked with systems support team to define, architect and maintain highly available production systems.
• Experience in LDAP and Puppet, Splunk, Cumulus, Ansible designed and developed integrated solutions through tools, processes and procedures to facilitate the cost effective delivery of services or fielding of products.
• Self-motivated, able to set effective priorities to achieve immediate and long-term goals and meet operational deadlines. Able to work independently and as team member.

TECHNICAL SKILLS

Hardware: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 9,10, SAN (Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Dell Power edge 1300/1500 server, IBM Xseries, Blade server, Oracle RAC.

Operating systems: Red Hat Linux (RHEL) 4/5/6, Solaris 9/10, IBM AIX 5.3, Windows NT /2003/vistaFedora 16/17/18, SUSE 10.x

Naming Services: DNS, NIS, and NIS+

Backup Management: VERITAS NetBackup 4.x/5.x/6.x, ufsdump, ufsrestore, tar, dd, cpio

Script, Programming Languages: Shell scripts, PERL, C C++

Web Technologies: Apache 2.x/3.x, IPLANET 4.x/5.x, WEBLOGIC 8, Websphere 4.0/5.0

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS

Third-party Software: VERITAS Volume Manager, LVM, LDAP

Cluster: Red Hat Cluster, Veritas Cluster Server (VCS), Sun Cluster, AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET, SSH, UDP & RIP, DNS, WINS, DHCP, SCH

Antivirus: Symantec Antivirus Corporate Edition, Trend Micro Messaging Suite for Exchange, MacAfee Virus Scan Engine 7.1 / 8i, AVG (Grisoft)

Remote Access Tools: Terminal Services, Net Meeting, Web - Ex, PC Anywhere and VNC for Windows Servers

PROFESSIONAL EXPERIENCE

Senior Linux Admin

Confidential, Dallas, TX

Responsibilities:

• Installation, configuration and upgrade of RedhatLinux5/6, Cent OS 5.7 & Solaris 11 operating systems.
• Involved in developing custom images on Cloud using AWS images and on VMWare ESX using templates and involved in building physical servers using Kickstart PXE Boot and Jumpstart.
• Involved in health check of servers after patching/rebooting and checked all the services ofLinux on AWS Cloud and also physical servers.
• Experience inBEA Weblogic Application server 7.x/8.x/9.x/10.x administrationunder heterogeneous environments likeUNIX, RHEL, SUN Solaris 8.0, 9.0, 10.0, IBM AIX and Windows NT.
• Excellent working knowledge ofOperation & Production Supportwith large mission critical systems in multiple technologies and platforms includingWebLogic, Apache, JBoss, WebSphere, UNIX, Windows NT, and Oracle.
• Extensively worked onBEA WebLogic 8.x, 9.x, 10.x,11 Server,Apache http Server, Apache Tomcat Serveras administrator for Server Installations, Configuration, Application components deployment, performance tuning including troubleshooting and maintenance.
• Extensively involved in troubleshooting bottlenecks of Memory, CPU, Devices and network using ps, vmstat, iostat, netstat, sar, snoop, nfsstat and sar commands, tuning the performance.
• Package management using RPM, YUM and UP2DATE in Red HatLinux.
• Experience with provisioning and virtualization of IBM P-Series hardware (LPARs, VIO).
• Associated with DBAs for installation of Oracle database onLinuxservers & for tuning, backup and restore.
• Scheduling the jobs by creating Crontabs onLinux.
• Perform operational tasks and activities e.g. monitoring log files, performance tuning and migration between environments.
• Monitor the performance and availability of key middleware components in production and test environments.
• Configured the systems for TCP/IP Networking with the existing LAN, Setting up SSH and SCP.
• Troubleshooting and configuration of Local and Network based printers.User, Group Administration and Advanced File Permissions.
• Maintain security for the networked environment while allowing users to access all data and software remotely..
• Experience working on web applications like Apache, HTTP headers Load balancing, DNS, DHCP.
• Involved in supporting Apache, Apache Tomcat and generated SSL keys for renewing SSL certs on web servers.
• Responsible for monitoring and working on problem tickets (BMC Remedy). Following it up with business and technical teams, and ensuring the problem is successfully resolved.
• Responsible for documenting the issue, cause and resolution.Have been the on-call person for the application, worked with the appropriate team members to bring the issue and get a resolution.

Environment: RHEL 6.x/5.x, Solaris 9/10/11, Apache 1.2/1.3/2.x, Logical & Veritas Volume Manager, Veritas net backup 5.x/6.0, VM ESX 4.x/3.x.

Senior Linux Admin

Confidential, Coral Gables, FL

Responsibilities:

• Designed, supported, and maintained Oracle Real Application Clusters supporting business critical applications on HP ProLiant BL465/BL685 & Integrity Itanium2 platforms on RHEL 4 & 5 in JEE environment.
• Setup and maintained NFS and TCP/IP network, configured the systems for TCP/IP Networking with the existing LAN, setting up SSH and SCP features between SUN systems and other Red Hat/UNIX hosts.
• Configuration and administration of LDAP, NFS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments. Experience in Vmware Virtualization and cloud computing
• Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running Solaris, Linux, Windows.
• Deployed RedHat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Experience with Jumpstart & Kickstart Installations on Solaris & Linux. Experience with NetIQ Access Manager.
• Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Responsible for the design and installation of a mixed computation and storage HPC cluster with 0.8 Petabytes of storage.
• Wrote Perl and Python scripts to generate statistics and monitor processes. Monitored various VPS instance in the cloud by Zenoss.
• Automated system management tasks like user account creation, file system size monitoring, monitor system resources and system maintenance using Shell, and Perl scripts.
• Worked with DBAs on installation of Oracle database, RDBMS database, restoration and log generation. Perform security patching of Linux servers.

Environment: Red Hat Enterprise Linux 4.x, 5.x, Ubuntu, Centos, Sun Solaris 8,9,10, VERITAS Cluster Server, Veritas Volume Manager, SLURM, Oracle 11G, HP UX, HP Blade, IBM AIX, HP ProLiant DL 385, 585 WebLogic, Oracle RAC/ASM, MS Windows 2008 server.

Linux Admin

Confidential, Monterey, CA

Responsibilities:

• Supported a large server and network infrastructure of Solaris, Linux and Windows environment.
• Managed installation, configuration, upgrades, and patch systems running OS such as Redhat, Fedora, Centos and Oracle Solaris.
• Utilized bash and ksh shell scripting to automate daily system administration tasks.
• Researched to improve service performance and reliability through investigation and root cause analysis.
• Managed data backup of Unix, Windows, Virtual servers, disk storage tier1 and tier2 backups.
• Copy of important backup images to tape media and send them to offsite every week. Performed quarterly offsite media audits and reports.
• Ensured that various backup life cycle policies, and daily backup jobs are running, and failed jobs are fixed.
• Troubleshoot of technical issues related to tier 3 Storage and Quantum tape libraries, reported and logged all media and drive errors. Worked with vendors to resolve hardware and software issues.
• Configuration of NDMP backup and troubleshoot of NDMP backup failures associated with storage.
• Maintained configuration and security of the UNIX/LINUX operations systems with the enterprise’s computing environment. Provided required evidences to support internal controls per SOX quarterly audit requirement.
• Monitored system activities and fine-tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in Active Directory, installing and configuring send mail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with project manager and auditing teams to implement PCI compliance.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.
• Created and maintained detailed procedural documentation regarding operating system installation and configuration of software packages, vendor contact information, etc.

Environment: Solaris 10, RHEL 5/4, Windows 2008/2003, Sun SPARC and Intel Servers, VMware Infrastructure. Red Hat Linux Enterprise Linux 4/5 4, Solaris 9, 10, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 & DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1.

Linux Admin

Confidential, Chicago, IL

Responsibilities:

• Patching of RHEL5 and Solaris 8, 9, 10 servers for EMC Power path upgrade for VMAX migration.
• Configuration of LVM (Logical Volume Manager) to manage volume group, logical and physical partitions and importing new physical volumes.
• Documented the standard procedure for installation and deployment of VMAX Migration and logical volume manager.
• Front-line support for users with variable HPC background and unique needs
• Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
• Configuration and administration of NFS and Samba in Linux and Solaris.
• Installation in the patches, Hardware and Software servers
• Maintained and monitored all of company\'s servers' operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Installations of HP Open view, monitoring tool, in more than 300 servers.
• Attended calls related to customer queries and complaints, offered solutions to them.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 4.0.
• Worked with DBA team for database performance issues, network related issue on Linux / Unix Servers and with vendors for hardware related issues.
• Expanded file system using Solaris Volume Manager (SVM) in the fly in Solaris boxes.
• Managed and upgraded UNIX's server services such as Bind DNS.
• Configuration and administration of Web (Apache), DHCP and FTP Servers in Linux and Solaris servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket (Request Tracker) created.
• Participated in on-call rotation to provide 24X7 technical supports.
• Configuration and troubleshooting - LAN and TCP/IP issues.

Environment: Red Hat Enterprise Linux 4.x, 5.x, Ubuntu, Centos, JEE, Sun Solaris 8, 9, 10, HP Blade, VERITAS Volume Manager, Oracle 11G, Samba, Oracle RAC/ASM, EMC Power path, DELL PowerEdge 6650, HP Proliant DL 385, 585, 580, Sun Fire v440, SUN BLADE X6250, X6270.

Systems Admin

Confidential

Responsibilities:

• Installation, Configuration, Upgradation and administration of Sun Solaris, RedHat Linux.
• User account management and support.
• Jumpstart &Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPsec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux.
• Configuration and Administration of NIS environment.
• Managing file systems and disk management using Solstice Disk suite.
• Involved in Installing and configuring of NFS.
• Worked on Solaris volume manager to create file systems as per user and database requirements.
• Trouble shooting the system and end user issues.
• Responsible for configuring real time backup of web servers.
• Log file was managed for troubleshooting and probable errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.

Environment: Sun Solaris 2.6/7, SUN Ultra Enterprise 6000/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.

Systems Admin

Confidential

Responsibilities:

• Performed hardware maintenance, upgrades& troubleshooting on SUN workstations & servers.
• Managed Windows 2003/NT4.0, file, print, SQL, WSUS and Exchange servers.
• Installation and configuration of Solaris and Linux servers through kickstart / jumpstart.
• Performeda trend analysis of CPU/Memory/Disk utilization for criticalservers.
• Ensuringperformance issues are properly addressed at right time to enable performance tuning.
• Worked with File System includes UNIX file System and Network file system.
• Planning, scheduling and implementation ofO/s.patches on both Solaris & Linux.
• Createdfile systems using VERITAS volume manager & VERITAS File system.
• Administration ofDisks and File systems using SVM and Veritas Volume Manager.
• Developed variousshell scriptsto automate aspects of systems maintenance.
• Handled Installation and configuration of Solaris and Linux on Sun Servers.
• Troubleshootingofproblems related to hardware, operating systems, third party applications & scripts.
• PerformedLinux systems performance, tuning, and enhancements.
• Involvedin the design and implement of HA (High Availability) and Load Balanced solutions.
• Proactively reviewing incident trends and report recurring issues to Problem Management.
• Participating in Emergency Power Outages and Disaster recovery procedures.

Environment: Solaris 10/9, Windows 2003/2008, RHEL 4.0/5.0, Sun SPARC and Intel Servers, EMC Storage