SUMMARY

• Around 6years of experience as Linux/Unix system administrator on Redhat EL 4.x, 5.x, 6.x, Debian, CentOS 4.x,5.x,Suse,Oracle Enterprise Linux, FreeBSD, Solaris 8,9,10 and VMware vSphere ESX/ESXi environment.
• Experience with VMware vSphere ESXi 4.1/5.0/5.1 and SRM 4.5
• Experience of 6+ years working on Red Hat Enterprise Linux, Sun Solaris, Debian Linux, Ubuntu Linux, MVS, Fedora Linux.
• Experienced working with ITIL methodology.
• Experienced working in FEA and CFD to solve complex problems.
• Experience with all kinds of MS Office like Excel, Outlook, and PowerPoint.
• Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi and Citrix Xen Server. Created and managed VMs (virtual server) and also involved in teh maintenance of teh virtual server.
• Good experience in working with teh design and features of teh system architecture.
• Worked with License Manager Server Configuration and administration with applications like FlexLM.
• Extensive understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel and wireless networks.)
• Excellent understanding of networking fundamentals and network security. Installation, Configuration and managing Firewalls like Fortinet, ZyWall, SonicWall, ISA with content filtering, Anti - Spam, Web filtering, NAT, Application Publishing to public IP, Port Forwarding, log analyzing with Syslog Server.
• Experience in using a tools like Nmap, hping, Nessus for penetration testing.
• Experience in implementation Intrusion Detection System: Tripwire, Snort, Lids.
• Experienced in using software like LSF and UGE to schedule job tasks.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Experience with x86 / x64 Intel, HP, IBM & Dell hardware like rack-mounted servers, tower servers, desktop, laptop and other peripherals.
• Experience in iSCSI SAN, NAS, NFS storage and RAID concept.
• Experienced and good working with data automation process.
• Experiences in NIS, LDAP, NTP, FTP, DHCP, SAMBA, users setup/troubleshooting.
• Experience managing various filesystem using VxVM, LVM and SVM and also configured filesystem through network using NFS, NAS methodologies and installed RAID devices.
• Experience in Server monitoring, capacity planning, application monitoring with teh help of Tivoli, HP insight, Nagios, Cacti, Zabbix
• Experienced in creating, mounting file systems and recovering file system errors.
• Performance tuning of Linux machines in teh environment by kernel parameter tuning, identifying process dat hog teh system resources and containing them.
• Experienced in scheduling different types of system tasks as per requirement.
• Experience working in customizing teh Kickstart and Jumpstart scripts to automate teh installation of various servers used for various internal projects.
• Good noledge of installation and update of drivers for HBAs to provide connection between servers and clients.
• Worked with application installations in Univa Grid Engine SGE V6.2.
• Adequate experience in Web Interface Management.
• Experience in managing logical volume manager in Redhat linux.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Advance Scripting skills in Bash Shell.
• Working Knowledge on using and developing Perl and python scripts used to automate day to day administrative tasks.
• Experienced in working in Network Operations Center (NOC).
• Experience with Cloud servers, LAMP and J2EE applications.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Worked with a bug/problem tracking system in responding to DNS requests, updates and tasks.
• Experience in Microsoft Office Suite, Open Office, Visio, Outlook, Printing, Windows networking, Security patching and Windows NT 2000/2003/XP.
• Experienced in user management, process management, software management and daemon management.

TECHNICAL SKILLS:

Operating Systems: Redhat AS/ES 2/3/4/5/6, SUSE 9/10, Solaris 9/10, Ubuntu 10/12, Windows.

Hardware: HP ProLiant, Dell Power edge, IBM x series

Database: Oracle 9i, 10g, DB2, MS Access, MYSQL 3.X.

Web Applications: HTML, PHP

Scripting: Perl Scripting, Shell Scripting on Linux

Networking: TCP/IP, NFS, Telnet, FTP, DNS, DHCP, NAT, ifconfig, route, Netstat, Xinetd, HTTP, SQUID, SAMBA

Web/APP Servers: Apache Web Server, Tomcat Web Server, Websphere

Tools: VMWare, PcAnyWhere, HP-ILO, IBM-RSA, Dell -RAC

PROFESSIONAL EXPERIENCE

Confidential, NY

UNIX/Linux Administrator

Responsibilities:

• Provided system support for 2000+ servers of SUSE Linux and Redhat Linux including routine maintenance, patching, and system backups and restores, and software and hardware upgrades.
• Worked on building new SUSE & Redhat Linux servers, support lease replacements and implementing system patches using teh HP Server Automation tool.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 5.1.
• Experience in installation and implementation of SLES 10, SLES 11 and Redhat Operating Systems.
• Configuration, implementation and administration of Clustered servers on SUSE Linux environment.
• Experienced in system administration, System planning, co-ordination and group level and user level management.
• Expertise in creating and managing Logical Volumes in SLES Linux.
• Performed automated installations of Operating systems SUSE Linux using autoyast.
• Experience on backup and recovery software like Net backup on Linux environment.
• Systems and network Planning and Administration.
• Expertise in setting up Nagios Monitoring software.
• Supported production systems 24 x 7 on a rotational basis.
• Understanding of Microsoft System Center: Creating and Implemented Changes on servers and documented teh change in teh Microsoft System Center for future reference.
• Resolved Security Access Requests via Peregrine Service center to provide teh requested User access related requests.
• Expertise in Installation, Configuration of Package and Patch Management.
• Handling and generating tickets via teh BMC Remedy ticketing tool.
• Experience with HP Gen 8 blade servers and rack mounted servers.
• Coordinated Hardware configuration, installation and management as well as. Configuration of ILOs and Console connections for HP Gen 8 Blade and Rack mounted servers.
• Experience with setting up Linux servers for Oracle Real Application Clusters and configuring SAN based mount points.
• Excellent Project Management experience.
• Expertise in Performance Monitoring and Performance Tuning using Top, prstat, sar, vmstat, ps, iostat etc.
• Creating new file system, managing & checking data consistency of teh file system.
• Created new file systems using Raw Device Mapped lun’s, Virtual Disks and SAN storage as per required.
• Successfully Migrated virtual machines from legacy Virtual environment Vmware Vsphere 4.1 to new Vmware Vsphere 5.1.
• Successfully upgraded SUSE Linux 10 to SUSE Linux 11 on an Oracle production standby server without losing any of teh database information.
• Documented teh procedure of Obsoleting servers resulting in considerable reduction in time and mistakes for dis process as well streamlining teh existing process.
• Communicated and Coordinated with customers internal/external for resolving issues for reducing downtime.
• Experience in Disaster Recovery and Planning.
• Problem determination, Security, Shell Scripting.
• Supported after-hours to meet deadlines as well as for operational support as required.
• Proven experience in end-to-end problem determination/troubleshooting system issues.
• Thorough understanding of networks and storage systems.

Environment: SUSE Linux 10, 11; HP Gen 8 Blades and Rack mount Servers, HP Server Automation, Vmware Vsphere 4.1 and 5.1, Microsoft System Center, IBM Storage, and NetBackup Storage.

Confidential, Memphis, TN

Linux/Unix Administrator

Responsibilities:

• Migration of applications from older Sun/Solaris hardware over to HP blade environment running Red Hat Linux (RHEL 4, 5, and 6. P2V migrations of hardware servers to VMware environment running on ESX V4.1 servers (HP Proliant hardware).
• Performed Installation, configuration of RHEL 5, Solaris and AIX operating systems.
• Actively Involved in Building and configuring of red hat Linux and Solaris 9/10 servers remotely using Jump Start /Kick Start Servers.
• Installation, configuration and management of SAMP (Solaris/Apache/MySql/PHP) and LAMP (Linux/Apache/MySql/PHP ) stacks.
• Maintained a secure hosting environment with latest certified Prism-CMS software, security patches, and software updates and upgrades to database, and application tiers.
• Creating templates, cloning Linux Virtual Machines and migrating servers between ESX hosts.
• Making Kernel upgrades for Linux.
• Hands on with EMC storage.
• Setup and management of SFTP server for file transfer services.
• Implemented chroot jailing for users to have restricted access to teh SFTP server.
• Provided support for JBoss 5.x and apache 2.0 application for operation related to installation and configuration.
• Drafted shell scripts for automated installations, to extract logs.
• Work with storage team and application team to ensure teh storage allocation and design is done at initial construction time.
• Worked with Database administrators to tune kernel for Oracle installations on Linux.
• Veritas Netbackup troubleshooting using remote tools and commands.
• Monitored teh systems CPU, memory, IDE/SCSI disks, disk controllers, RAID, RAID controllers, file systems, and network parameters using teh tools NAGIOS system monitoring tool and BMC performance management tools.
• Integration of more than 500 Linux servers to authenticate using Windows Active Directory using Winbind and Samba.
• Managing DNS for external and internal domain & Sendmail Relay Server for outgoing mails.
• Creating Zones, containers, LDOMs on Solaris servers, creating zpools, ZFS file system installing Oracle, Java based applications on them.
• Preparing servers for Oracle RAC installation which includes tuning teh kernel, agent installation, adding NAS storage on 2, 3, 4 node clusters.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Worked with engineering team to resolve tickets related to engineering issues like firewall change requests.
• Install/troubleshoot AUTOSYS to schedule application jobs.
• Generated detailed documents and reports on issues and solutions for future reference.

Environment: RHEL 4.5/5.0, Solaris 8 /9, Windows 2007/2008/2010, Veritas Volume Manager (VxVM), Veritas Cluster Servers, Veritas Net backup, IBM X Servers X3400, X3550, X3650, X3650M2, TCP/IP, NIS, NFS, DNS, SNMP, DHCP, Apache 2.0, NAS, Oracle 10g, Oracle RAC, Samba, Winbind, JBoss 5.x.

Confidential, Plano, TX

Linux administrator

Responsibilities:

• Installation of Red Hat Enterprise Linux 4.x, 5.x using Kickstart and PXE on HP Blade Servers.
• Installing, Configuring and Upgrading of teh Cent OS 5.x.
• Able to configure and Install Fedora core 2 having kernel 2.6.
• Performed support role for applications on mission critical Enterprise Networks and Multi-server environments.
• Troubleshooting various issues on ssh, ftp, telnet etc.
• Implementations of automatic secure SSH Login, User and Group administration.
• Configured Printers, Print Server and Print Clients using commands like lp, lpstat, lpadmin, lpfilter & GUI.
• Updated firmware on HBA cards like qlogic and installed it on HP DL, C7000, PE Dell R410, R610 servers.
• Virtualized Linux servers and deployed automated tasks using BMC Blade Logic Server Automation Suite.
• Samba & NFS file Server for sharing files on multiple clients.
• Patch and package administration for installation of patches as per teh company policy and installation of packaged application.
• Configured iptables on Linux servers.
• Implemented Spacewalk Open Source (Red Hat Satellite Server) System management application for auto provisioning, software grouping, custom package channel, system inventory, auto deploying patches and monitoring of Red Hat Servers.
• Swap space administration.
• Responsible for developing and planning teh implementation of technical downtime and recovery processes and teh technical setup of downtime systems.
• Data Warehousing and System Backup using tar, cpio for local systems.
• Experience scheduling jobs with ControlM and Cron.
• Worked on POSTFIX mail server running on Red Hat Linux.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Implemented open source base monitoring tool Nagios 3.0 for servers, SAN switches, EMC SAN Storage and VMware ESX and ESXi.
• Day to Day activities included handling security issues like stale UNIX account cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Ensuring data redundancy with RAID implementation.
• Shell and perl scripts to automate daily repetitive activities.
• Build Apache2 web server in Solaris and Apache in Red Hat, FTP and NFS.
• Open ports for applications and process dat require special ports.
• User, Group management for all teh UNIX servers.
• Network trouble shooting using ndd, traceroute, netstat, ifconfig and snoop.
• Do documentations and system training to teammate and lower tier support.

ENVIRONMENT: Red Hat Enterprise Linux 3.x/4.x/5.x, Cent OS 5, Fedora core 2, Apache2.0, Postfix, BMC Patrol, RAID, HP DL, C7000, PE Dell R410,R610, VMware ESX Server2.x, RAID, FTP, NFS.

Confidential, MI

Unix/Linux ADMINISTRATOR

Responsibilities:

• Experienced as Red Hat Enterprise Linux administrator and migrated 29 games from physical to virtual (P2V) environment.
• Decreased footprint and decommission services. Created a mirror copy of bare metal into a virtual environment.
• Switching production to virtual from bare metal, decommission and shutdown legacy physical servers.
• Worked on Acronis Agent Installation, backing up teh Physical Server, deploying teh New VM on KVM hypervisor.
• Worked on Recovery from failed restore, post deployment VM Setup.
• Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• Worked on MySQL Migration Level, Created MySQL Master Replication Detail Plan, MySQL Slave(s) Replication Detail Plan.
• Exposed to Puppet or Chef Configuration management tools
• Create scripts to automate daily tasks like creating LAMP stack VPS’s, chrooted sftp, ZFS backup scripts, VPS load testing, SSL installations, ecommerce search engine index replication, apache-solr setup, Mysql replication.
• Monitoring and service issue resolution of LAMP stack web servers, both shared and VPS.
• Participated migration cutover meeting’s, Build and deploy Linux hardware Nodes to host several KVM templates.
• System Data and Process Architect for Service-Now Deployment.
• Worked on Puppet extensively for deployment for servers, creating on custom scripts and managing changes through Puppet master server on its clients.
• Assembled Puppet Master, Agent, and Database servers on multiple Red Hat Enterprise Linux Platforms.
• Created Global and Regional Process workflow maps and design documents.
• Led Global design team to define ITIL Framework and Global Multi Domain Service-Now Instance.
• Created and led process workshops to define customer's requirements to build out Service-Now.
• Designed and created data templates for form design and configuration.
• Installation and configuration of Apache Webserver in a LAMP stack.
• Designed multi rollout scenarios to meet corporate schedules.
• Monitoring connections and load of Apache server using mod status.
• Create LAMP based game metrics web application for real-time viewing of user activity.
• Ran Operational Readiness Testing for Incident, Problem, Change, Service Catalog, Knowledge Management
• Troubleshoot customer applications issue.
• Migration of PHP and Ruby applications to a LAMP platform using RVM
• Troubleshoot OS issue using system message logs.
• Troubleshoot NeuStar NumeriTrack, OrderPath, NumberManger applications issue with customer.
• Troubleshoot Web Services API, Apache Tomcat, and Corba issues
• Install packages using RPM.
• Created KSH/Bash scripts to monitor processes and making sure process startup when operating system restart using chkconfig and RC startup levels.
• Manage user/group and sudo access on teh Linux operating system.
• Setup logrotate for applications logs and system logs.
• Setup static IP address for server when there is a new server build .
• Troubleshoot network issue from teh OS stand point using netstat, ping, traceroute, and tcpdump commands.
• Open ports for applications and process dat require special ports.
• Backup MySQL database by creating script to run teh mysqldump and package it in a gzip file.
• Manage user and database on teh MySQL database.
• Document process and procedures for system and database usage.
• Maintain team wiki and making sure all documents are in teh correct format.
• Do documentations and system training to teammate and lower tier support.
• Documenting processes and troubleshooting scenarios on runbooks.
• Created a web page for internal recognition using WordPress on a Linux server with LDAP connection.

Environment: Red Hat Linux 3/4, KVM, Acronis, Solaris 8, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, NIS +,SNMP, Shell scripting, SENDMAIL, Apache, Puppet, WebSphere, Sun and Veritas Clusters.

Confidential, Irvine, CA

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration and upgrade of Redhat Linux (2,3,4,5), Ubuntu 12.0, CentOS, SUSE, AIX, HP-UX & Windows 2000 / 2003/2008 Operating System.
• User Administration, management and archiving.
• Configuring NFS, NIS, NIS+, DNS, Auto Mount & Disk Space Management on SUN Servers.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID Levels.
• Data Center Migration support for CX, DMX attached hosts.
• Worked with OVF "Open Virtual Machine Format" supported tools VirtualBox, Redhat Virtualization (XEN), and VMware Workstation.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Installation, Configuration and Maintenance of Samba, Apache Tomcat, Web Sphere and Jboss servers in AIX and Linux environment.
• Experience in Active directory configurations and support.
• Experience with setting up Linux servers for Oracle Real Application Clusters and configuring SAN based mount points.
• Experience in storage administration support with EMC Symmetrix / DMX, Clariion, NetApp NAS filer and Brocade / Cisco Fiber Switches for zoning purposes.
• Troubleshooting host-based connectivity issues related to EMC software like PowerPath, Navisphere, ECC client software and third-party HBA's (Emulex and Qlogic).
• Emulex and QLogic HBA cards installation and configuration of teh host servers.
• Experience with Connectrix Manager and Data Fabric manager, Zoning, LUN allocation, Storage allocation to storage groups.
• Expertise in Performance Monitoring and Performance Tuning using Top, prstat, sar, vmstat, ps, iostat etc.
• Expertise in creating and managing Logical Volume Manager in AIX, HP-UX and Redhat Linux.
• Server Consolidation and Migration of Applications on Oracle Enterprise and Java Applications.
• Experience in building Production Servers and validation for new build releases.
• SENDMAIL configurations and administrations, testing teh mail servers.
• Creating new file system, managing & checking data consistency of teh file system.
• Setup and configure Veritas NetBackup 5.x, 6.x and 6.5x Net Backup server / client & tape libraries.
• Monitor Modify and Optimize NetBackup activity, backup schedules and reporting to proactively avoid issues.
• Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris and Ignite for HP-UX.
• Installation of Packages and Patches for AIX, Solaris 8/9/10, Redhat Linux 4/5, HP 11.X.
• Disk and file system management through Veritas Volume Manager / Veritas File System and Solstice Disk Suite.

Environment: Redhat (2,3,4,5), Ubuntu 12.x, CentOS and SUSE Linux, Solaris 8 / 9 / 10, Sun Enterprise Server, HP 9000 K, L, N Class Server, IBM RS/6000, pSeries Server, NetBackup 5.0, Veritas Volume Manager 4.x/5.0, SAN EMC Clariion CX 700/ CX 600/ CX 500, EMC DMC 2000/ 3000, NetApp NAS 3000, Windows NT 2003/2000/ XP.

Confidential

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux, AIX, HP-UX, Linux operating systems.
• Installation of patches and packages.
• Experience with VMware Virtualization using ESX hypervisor of Vsphere 4.0.
• Maintained Server 6.0. Backup data of Servers using VERITAS Net Backup. Configuration of VERITAS Cluster Server, Service Guard from teh scratch and maintained service group/packages for failover and redundancy purpose.
• Involved in Implementing and Administrating enterprise level data backup and recovery.
• Designed and Implemented Back up solution for teh Network
• Installed and configured file and Application servers running on Sun servers
• Configuring and maintaining network services such as LDAP, DNS, NIS, NFS, Web, Mail, FTP
• Implementation of RAID 0/1/5 for creation of logical volumes using VERITAS Volume Manager in SAN Storage Area Environment
• Managed Network troubleshooting applications TCP/IP including Ethernet, IP addressing & Sub netting, routing
• Created User Accounts and Network Shares. Configured SUN Workstations as Domain Clients.
• Administrated NFS, NIS, DHCP and DNS Samba services running on AIX and Red Hat Linux.
• Worked with Storage team to configure EMC SAN, NAS and iSCSI configuration.
• Managed Users for AIX, HP-UNIX and Linux Servers and assigned rights to access network resources.

Environnent: RedHat Linux, HP-UX 11.0, AIX 5L, Sun Enterprise 450/420R/250 Servers, Ultra Enterprise 2/1 Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, HP 9000 K, L, N class server, HTML, CSS, JSP, JavaScript and Ajax.

Confidential

LINUX SYSTEM ENGINEER

Responsibilities:

• Installation, configuration and administration of Red Hat Linux servers and support for Servers.
• Installation, maintenance and regular upgrades of Red Hat Linux Servers using kickstart based network installation
• Provided 24x7 System Administration support for Red Hat Linux 3.x, 4.xservers and resolved trouble tickets on shift rotation basis.
• Provide teh support of building teh server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
• Managing Compaq and Linux workstations and servers.
• Installation of patches and other software packages
• Monitoring system performance, tune-up kernel parameter, adding /removing /administering hosts, users, disks on DNS / NIS domain,
• Configuration of Hardware and Software RAID on Digital & Sun Servers
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Installation and configuration of Oracle 7.x/8.x.
• Implemented NFS, DNS and NIS under SUN.
• Performed teh administration of teh Domain Name Server and configuration of teh Database Files.
• Wrote bash shell scripts for getting information about various Linux servers
• Installed and Configured Sendmail Utility on Sun UNIX Servers.
• Administering NFS Mounts.
• Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities
• Monitored overall system performance, performed user management, system updates and disk & storage management
• Performed OS upgrades and Patch loading as and when required.
• Backing up and restoring files across teh network
• Wrote Technical documentation for various projects and worked with Technical writer to finalize teh documents.

Environment: Red Hat Linux 4.1,4.2,4.3,4.4, SunFire 4500/ V880 / V480/ E420R/ E450/ E250, SunStorEdge L280, Sun StorEdge A1000, A5000, JBODs Compaq servers, Solstice Disk Suite, Oracle 7.x/8.x