SUMMARY

• 8+ years of experience as Linux system administrator in implementation, administration and Application - product support in Linux (Red hat RHEL 3/4/5/6 and SUSE 10.3/11.1), AIX 5.x and Windows (NT/2000/2003) in heterogeneous environments and in VMWare, VSphere.
• Experience in Installing, upgrading and configuring RedHat Linux 4.x, 5.x, and 6.x using Kickstart Servers.
• Experienced in implementing Puppet, Chef.
• Experience using cloud providers and API’s for Amazon (AWS) with Cloud Sigma (EU).
• Worked on Data-Center operation and migration across Unix and Linux platforms.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Redhat Linux.
• Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LDAP, LAMP web service environment.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti and Puppet.
• Openstack deployment experience on RHEL using XEN Hypervisor.
• Installation and upgradation of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.
• Experience in configuration ofNIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, send mail, FTP, remote access, security management and Security trouble shooting skills.
• Experience on Web servers such as iPlanet Web server 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x, 6.x, and 7.x & Apache Server 1.x, 2.x and integrating them with Web logic 10.x servers.
• Implemented Trip wire and Digital board band.
• Experienced on Redhat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Experience in VMware.Installed and monitored Virtual environments with ESX/ESXi servers and VirtualCenter 4.X.
• Expert in Linux Performance monitoring, kernel tuning, Load balancing, health checks and maintaining compliance with specifications.
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Good understanding of OSI Model, TCP/IP protocol suite (IP, ARP, TCP, UDP, SMTP, FTP, and TFTP).
• Installation and configuration of JBoss, Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
• Independent problem solving and a good team player with strong interpersonal and communication skills.
• Experience supporting 24x7 production computing environments. Experience providing on-call and weekend support.
• Experience in Troubleshooting Hardware, Storage, Application Bottlenecks. System Recovery, Crash dump analysis and Performance Tuning.
• Ability to work independently as well as a team member.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5,, Solaris Release 2.10/2.9/2.8/2.7 , IBM-AIX 5.X, zVM Windows 2003, 2008, 2012 and NT

Hardware: HP Proliant, Blade servers, Sun Servers E450, E3500, E4500, E5000, E6500, E10k, E15k, E25k, Sun Ultra's, V210, V280, V490, V880, V6800 SUN Ray (1g Ultra Thin Client) SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage Arrays, F5

Software: Veritas Volume Manager 3.5/4/5, Veritas File System,Veritas Cluster Server 3.5, Veritas Netbackup 6.0, Logical Volume Manager, MS-Office/MS-Project

Web/ Application Server: Tomcat, Apache DB2, Oracle, IBM RSA/WAS

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and TCP dump, FTP, TFTP.

Cluster Environment: Sun Cluster Servers 2.2, 3.1, 3.2 and VERITAS Cluster Servers 4.1

Programming Languages: C, SQL, HTML, PHP, XML, Bash, Perl and Shell Programming, Python.

Other tools: VMware, VSphere, ESX/ESXi, VCenter Server, Datacenter Puppet, Chef and Nagios

PROFESSIONAL EXPERIENCE

Confidential, Blue Bell, PA

Sr.Linux system Admin

Responsibilities:

• Installing Red Hat Linux 5/6 using kickstart servers and interactive installation.
• Supporting infrastructure environment comprising of RHEL and Solaris.
• Administration of kernel upgrades on 6600+ production, development and QA Store vision teller Linux Servers.
• Performed the automation using Chef Configuration management and managing the infrastructure environment with Puppet.
• Building and supporting environments consisting Testing, Contingency, Production and Disaster Recovery servers.
• Installed and configured Disk and file system management using Logical Volume Manager (LVM) for LINUX systems.
• Implemented Puppet, Chef, Nagios tools.
• Performed OS provisioning using kickstart through BMC Blade Logic.
• Performed patching of RHEL using yum, up2date and Blade Logic.
• Experience with VMware Virtualization using ESX hypervisor of VSphere.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.
• Responsible for large-scale Puppet implementation and maintenance. Puppet manifests creation, testing and implementation.
• Creation of SAN File System on Red Hat Linux using multipath configuration.
• Configuration of Network bonding which include Active/Standby and Active/Active.
• Installation of HBA cards ( Emulex and Qlogic ).
• Rebuilding of kernel in RHEL using mkinitrd.
• Troubleshooting Network, memory, CPU, swap and File system issues, TCP/IP, NFS, DNS, SMTP in Linux and Solaris servers.
• Administration of repetitive Jobs using Cron scheduling, and using bash Scripts to accomplish the task on multiple servers.
• Performance tuning of Virtual Memory, CPU, system usage in Linux and Solaris servers.
• Configuration of Monitoring tools in Linux and Solaris servers.
• Performed Disaster Recovery in RHEL servers which consists of LVM based FS and Red Hat Clustering.
• Supported class monitoring and management tools such as Open NMS, Tivoli and VCO.
• Installation, configuration and administration of Jboss, Apache, Weblogic, Tomcat and Websphere.
• Building of Oracle RAC (Oracle Real Application Clusters) environment.
• Monitoring SVT, Tomcat and Apache ticketing tasks, and Disk and CPU utilization by using various monitoring tools.
• Managed TCP/IP packets and DHCP servers.
• Monitoring system performances using Nagios and managing network issues.
• Installation of third party tools using packages.
• Provide on call support by rotation 24/7.

Environment: Environment: Redhat Linux 5.X, HP & Dell Servers, Oracle/DB2, VMWare ESX 4.x, Autosys, VMware VSphere, ESX, Bash, Shell Scripting, Nagios.

Confidential, Bellaire, TX

LINUX Administrator

Responsibilities:

• Worked on variety of Linux platforms Red Hat Linux, Solaris which includes installation, configuring and maintenance of applications on this environment.
• Works with Symantec and BSC team to setup the Symantec O3 IDLINK Open VPN Servers.
• Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.
• Implemented cloud services AWS.
• Implemented automations tool puppet and worked with Chef Management tool and AWS and DevOps.
• Migrated to Red hat satellite server 6 version.
• Implemented Bash, Perl, Python scripting.
• Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server, yum, etc.
• Installed packages using YUM and Red hat Package Manager (RPM) on various servers.
• Troubleshooting network administration, IIS configuration, DNS setup and modifications, firewall rule sets, local and distributed director, connectivity, and supporting applications.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Worked exclusively on VMware virtual environment.
• Experience in using VMware VMotion to move VM’s from One Datacenter to another datacenter.
• Involved in installation and configuration of various Third party software onto servers.
• Installed, configured and provided support for Tivoli Monitoring software across various OS platforms like RHEL, AIX and Solaris.
• Performed the daily system administration tasks like managing system resources and end users support operations and security.
• Involved in ILMT Agent Deployments and Oracle/SQL Upgrade project which includes various UNIX builds of different OS platforms across various data centers.
• Responsible for independent support of Tier 2 issues: reboots, start/stop services, reset Terminal Service and pc anywhere connections, and administrative server maintenance. Daily follow up with clients to ensure resolution of all issues.
• Provide support to Account Managers, UNIX and Windows technicians, and other departments.
• Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux.
• Coordinated with various cross functional teams across IT operations to make sure smooth functioning of projects.
• Worked closely with DBA Team in order to adjust kernel parameters as per requirements.
• Day to day resolution on Linux based issued though SMS ticketing system in compliance to SLA cycles.
• Performed application installation and management on IBM AIX and Linux servers for applications like Web Sphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Sun JES Web Server 6.1, Oracle 10g, Sybase 12.5 etc.
• Automating many day to day tasks through Bash scripting.

Environment: Red hat Enterprise Linux 4.x/5.x/6.1, AIX 6.x, Solaris 8/ 9/10, Tivoli Storage Manager, VMware ESX5, Tivoli Net backup, and Web sphere. Windows 2012 servers, Windows 2008, IIS 7.0 & 7.5.

Confidential, Uniondale, NY

LINUX/UNIX System Administrator

Responsibilities:

• Installing Configuration and maintenance of Solaris 9/10/11, RedHat Linux 4/5/6, SUSE 10.3, 11.1, HP-UX 11.x and IBM AIX operating systems.
• Worked on configurations and installations Solaris and Linux servers using Custom Jumpstart and Kick start.
• Maintaining and Troubleshooting of FTP Server, Samba Server of the client
• Handling the day-to-day Operations, Install software, apply patches, manage file systems, monitoring performance and troubleshoot alerts.
• Installed and configured VERITAS Volume Manager (VxVM), Disk and file system management through Veritas Volume Manager, Solaris Volume Manager and Solstice Disk Suite on Solaris and using Logical Volume Manager (LVM) for other flavors of UNIX.
• Maintain 99.98% uptime of LINUX production servers and follow proper escalation.
• Managing Redhat Cluster, HPC environment etc.
• Automate repetitive tasks, deploy critical applications and manage change on several servers using Puppet.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Maintained virtual environments using VMware ESX 4.x Server and built various Linux servers on VMware servers.
• Responsible to solve technical Problems related System administration (Linux of Our Clients).
• Building & configuring Redhat Linux systems over the network, implementing automated tasks through crontab, resolving tickets according to the priority basis.
• Handling LVM related tasks, Creating, resizing LVM, Veritas Volume manager and also managing Cluster environment using Veritas Cluster suite.
• Handling the day-to-day Operations, Troubleshooting& Solve Server Problems in LINUX.
• Installing and configuring Redhat Linux locally or over the network-kick start- (nfs, ftp, http).
• Managed patches configuration, version control, service pack and reviews connectivity issues regarding security problems.
• User Administration (setup and maintaining accounts).
• Experience in building binaries using Maven & Xcode.
• Maintaining Server and Systems, provide IT support to User.
• Monitoring system performance, Server load and bandwidth issues.
• Work with DBAs on installation of DB, restoration and performance tuning.
• Installing open source application, search, analyze and develop new application for users.
• Updating Systems, Servers and client software's.
• Implement the policies for the users of the computer system and network.
• Regularly manage backup process for Server and Client data.
• Provided production support in an on-call rotation in a 24*7 environment.

Environment: Centos 5.7/6, Redhat Linux 5.7/6, Ubuntu 10.04/10.10/11.10 , Fedora 17, VMWare, SAN(EMC, Hitachi), NAS (Netapp), BladeLogic, Veritas Volume Manager 4.1, Sun Enterprise Server(E2900, E4500, E6900), Bash, Nagios.

Confidential, Draper, UT

Linux Administrator

Responsibilities:

• Installing Configuration and maintenance of Solaris 9/10/11, RedHat Linux 4/5/6, SUSE 10.3, 11.1, HP-UX 11.x and IBM AIX operating systems.
• Configured NIM in AIX 5.x, 6.x, 7.x, KickStart Server in Linux 4.x, 5.x and JumpStart Server in Solaris 9, 10 u.x and build severs using NIM, kickStart and JumpStart server.
• Worked Primarily on RHEL 4/5, HPUX, and Solaris Operating Systems.
• Text processing, also in network programming with Perl Scripting.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Involved in migration activities using Redhat LVM, Solaris LVM, Veritas and EMC Open Migrator.
• Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration with oracle database.
• Writing Shell and Perl Scripting for automation of job.
• Tuning the kernel parameters based on the application/database requirement
• Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Installed and configured GFS cluster for holding databases.
• Manage user accounts for the team access for Redhat Satellite Server.
• Build channels and pull the packages from master Redhat Satellite Server.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Installation, Configuration and Administration of Web Logic, WebSphere and Apache Servers in Linux and Solaris Servers.
• Configured open LDAP Red Hat Linux systems.
• Setup optimal RAID levels (fault tolerance) for protected data storage in NAS environments.
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP IMAP and POP3) and file servers.
• Maintaining Remedy environments used for the ticketing system.
• Created new slices, mounted new file systems and uncounted file systems.
• Expertise in troubleshooting the systems and managing LDAP, DNS, DHCP and NIS.
• Worked with different Active directory databases like Microsoft AD, Tivoli Directory server with LDAP.
• Worked on making DNS entries to establish connection from server to DB2 database.
• Performed patching, backups on multiple environments of Solaris, Linux and VMware.
• Assisted other UNIX administrators when help was needed (i.e. creating UNIX accounts, writing scripts to perform system administrator functions, responding to trouble tickets, etc).
• Involved in preparation of functional and system specifications. Estimated storage requirements for applications.

Environment: Red Hat Linux (RHEL 3/4/5), Solaris 10, Logical Volume Manager, Sun & Veritas Cluster Server, VMWare, Global File System, Redhat Cluster Servers.

Confidential

LINUX Administrator

Responsibilities:

• Involved in design, configuration, installation, implementation, management, maintain and support for the Corporate Linux servers RHEL 4.x, 5.x, SLES 9, CENTOS 5.x.
• Experience in Installing, configuring, and maintaining IBM Rational ClearCase and Rational ClearQuest on AIX platforms.
• Installation of patches and packages using RPM and YUM in Red hat Linux.
• Created and modified application related objects, created Profiles, users, roles and maintained system security.
• Installed and configured SAMBA server for Windows and Linux connectivity.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Build Yum and RPM repository Server for Development team to upload packages, Written UNIX Shell scripts for monitoring & clean up old files.
• Modified Kernel parameters to improve the server performance in Linux.
• Experience in Developing KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Installed and configured Apache / Tomcat web server.
• Creation of Logical volumes (LVM) for Linux operating systems.
• Worked with DBA team for database performance issues, network related issues on Linux Servers.
• Created and modified users and groups with SUDO permission.
• Experienced in creating Logical Partitions (LPAR) on Tivoli Storage.
• Created users, manage user permissions, maintain User & File system quota on AIX and Linux servers.
• Backup configuration using IBM Tivoli Storage Manager for AIX Servers.
• Upgraded Redhat Linux OS on Websphere, JBOSS and Oracle database servers from V3, V4 to V5.
• Installation of Oracle 10G RAC with Cluster Ready Services (CRS) on Linux, creating database, creating Oracle users & export and importing database, creating role back segment etc.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Experience in LVM, Kernel and performance tuning on IBM AIX and Redhat Linux.
• Define/setup network protocols, Network File Services (NFS) and Network Information Services (NIS) on Linux and AIX servers.
• Performed security, users, group’s administration and daily backup and restore operations, networking service, performance, and resource monitoring.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Redhat 3.x, 4.x, 5.x, Solaris 8,9,10, Tivoli Storage Manager, Veritas Netbackup 4.5, WebSphere Application Server 3.5/4.0.x, LDAP, DNS,VIO,NIM, NFS, TCP/IP, SAN, NAS, Nagios 2.x, WebLogic 8.1, Oracle 9i/10g, Tivoli Storage Manager 5.x, VMware 2.x, Shell Scripting.