SUMMARY

• Experience of 6 yrs. working on Red Hat Enterprise Linux, Sun Solaris, Debian Linux, Ubuntu Linux, Fedora Linux.
• Strong experience working with various Development & Test teams in an Enterprise level environment.
• Responsible for OS installation and configuration through network and standalone installation techniques and also installing third party softwares and services.
• Experience managing various filesystems using VxVM, LVM and SVM and also configured filesystems through network using NFS, NAS methodologies and installed RAID devices.
• Worked along with Monitoring teams to identify and troubleshoot issues on servers using tools like Nagios, Munin and Cacti.
• Experts in various VMware Technologies such as ESX/ESXi hosts, VMWare cluster, VCentre Servers and applications.
• Handling day - to-day User Administration tasks like adding, deleting and modifying user data and documenting all user data in a centralized location.
• Performance tuning of Linux machines in the environment by kernel parameter tuning, identifying process that hog the system resources and containing them.
• Experience working in customizing the Kickstart and Jumpstart scripts to automate the installation of various servers used for various internal projects.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Working Knowledge on using and developing basic shell and python scripts used to automate day to day administrative tasks.
• Responsible for OS maintenance activities like upgrading the OS, updating the services and third party softwares.
• Worked in maintaining integrity of Linux, Solaris servers by performing patching operations on a regular and planned way.
• Working knowledge on TCP/IP, UDP protocols in solving network related issues on the servers.
• Installation and configuration of Web Application servers like Apache, Tomcat and Weblogic.
• Have tested various Linux Environments in the Development/Test Stages to help create a better standardized environment and resolutions of any problems if any occurred.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• Worked with a bug/problem tracking system in responding to DNS requests, updates and tasks.
• Experience in working with Virtualization Technologies like VMware in building and configuring Linux, Solaris servers as a part of cost effective solutions.

TECHNICAL SKILLS

Operating Systems: RHEL 4/5, Centos 4/5, Fedora 11/12, Solaris 8/9/10, Windows XP.

Services: NFS, SSH, SFTP, FTP, rlogin, RPM, YUM, Samba, Auto FS, Telnet.

Monitoring Tools: Nagios, Munin, Cacti.

Languages: C, C++, HTML, Java Script, SQL, Bash, Python & Shell Scripting.

Virtualization: VMware and Vsphere.

Networking: TCP/IP, UDP, LAN, WAN, NIS, NIS+, DNS, DHCP, NAS.

Filesystems: LVM, VxVM, SVM.

PROFESSIONAL EXPERIENCE

Confidential, Atlanta GA

Unix/Linux Engineer

Responsibilities:

• Installation/configuration of Redhat 3/4/5/6 using Kickstart Server and Solaris 9/10 using Jumpstart.
• Provisioning of OS using Blade Logic Provisioning Portal.
• Managed various servers using VMware vSphere ESXi 4.1/5.0/5.1.
• Responsible for installation and configuration of Red hat Enterprise Linux (RHEL6.3 and RHEL 6.4) in development and test environments on HP physical servers as well as Virtual Machines
• Performing Post Build activities like Setting up Backup interface/ NIC bonding/ Loading additional Packages/ Joining the server to Active Directory, etc
• Worked with EMC SAN to acquire storage and setting up Veritas/LVM file-systems.
• Worked on setting up Veritas clustering.
• Worked with Oracle DBA’s for restore of Oracle Instance and Building Oracle RAC Cluster.
• Worked on creating Virtual machines using VMware and CHP software.
• Experience with working on Solaris Zones/Containers.
• Performed hardware, operating system, security and application updates/patches on these systems as well as operating system hardening based in industry standards.
• Experienced working with sudo, Vintella Authentication and Powerbroker.
• Experienced working on Datacenter Migration Projects.
• Mirrored existing logical volumes & created volume groups, disk groups & set up the RAID (0, 1,5) using VERITAS volume manager.
• Migrated the existing UFS data to VxFS for best possible IO performance.
• Working Knowledge of Network Protocols such as NTP/NIS/TCP/DNS/DHCP/HTTP/SMTP/SFTP/FTP/SCP/NFS.
• Installed/Configured the WebSphere server, JBoss application server, Weblogic server; Managed tuning and performance of high profile applications running on them.
• Worked with Enterprise Security Manager to get Security certification for servers before moving them in to production.
• Responsible for Failover/Pre-Failback/Failback and verification of the same incase of outage in the high environment using VCS (Veritas Cluster Server).
• Developed Cron jobs and Shell Scripts (Perl, ksh) for automating administration tasks like file system management, process management, Server reboots etc.
• Worked on Datacenter Moves where servers were moved from one datacenter to another.
• Working very closely with vendors ( Confidential /HP/Sun/EMC) in resolving any hardware/ Storage and Network issues.
• Monitoring the system performance and doing the kernel tuning to enhance the system performance.
• Working knowledge on ITSM remedy and Maximo ticketing systems.
• Troubleshooting Production Server Problems related to web applications, Sendmail, disk space, file system, DNS and network connectivity.
• Provided 24/7 on-call support on a weekly basis.

Environment: RHEL 3, 4.x, 5, Solaris 9, 10, Veritas Storage Foundation 5, Oracle 10g/11g, Veritas Cluster Server, Zones, RAC, DMZ, Send mail, SAN, NAS, Active Directory, NIS, ITM, Bladelogic, Remedy, VMware, Netbackup 6.5, BMC Patrol, LVM, VAS, Websphere

Confidential, Milwaukee, Wisconsin

Linux Engineer

Responsibilities:

• Installed and configured RHEL 4.3, 4.7, 5.1, 5.2, 5.3 on Confidential Bladecenter servers.
• Configured Confidential p5,B80,RS6000,520,550,570,590,595,610,690.695 for production, staging and test environments.
• Administered, maintained Red Hat 3.0, 4.0, 5.0 AS, ES, Troubleshooting Hardware, Operating System Application & Network problems and performance issues; Deployed latest patches for Sun, Linux and Application servers, Performed Solaris and Red Hat Linux Kernel Tuning for TCP stack.
• Installing and upgrading Red hat Linux, firmware, failed hardware and system support software HP Proliant Servers.
• Configured and maintained the HP Proliant Essential Software packages on the PICS and Preload Assist Servers
• Performance monitoring with Sar, Iostat, VMstat, MPstat and Other Tools.
• Disk Space management using VERITAS Volume Manager.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Implemented Virtualization using VMware in Linux on HP-DL585.
• Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Installing and setting up Oracle9i on Linux for the development team.
• Created Servers, User mappings and Nicknames to access DB2 and Oracle databases.
• Installed VMware ESX server on Dell Servers and configured Solaris 9/10/ Red Hat Linux 4.0 / Windows 2000 virtual machines for various applications.
• Installation of software packages and checking the integrity of the installed packages. Installed different RPM Linux 4.0/5/0.
• Administered Linux servers for several functions including managing Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production
• Installed and configured Sudo for users to access the root privileges.
• Integrating UNIX file systems using packages like SAMBA. Setting up printers on UNIX / NT machines to work seamlessly across platforms.
• Installed application connectivity software to enable Confidential print services.
• Configured and administered firewall rules to effectively monitor system files, port security, and network traffic activity coming through the firewall.
• Assisted other teams for projects like ISS Development, Test and QS environments
• Worked with different hardware and software vendors to troubleshoot the hardware and software problems.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Document backup policies and procedures for backup routines, schedules and restore policies.
• Configured and documented the Preload Assist and PICS.
• Responsible for backup of all servers, and recovery of servers.
• Managing cron jobs, at Jobs, batch processing and job scheduling.
• Able to create and maintain documentation for servers and storage environments.
• Supporting and in-depth troubleshooting of AIX systems 24 x 7 Environment

Environment: Linux, VMWARE, Confidential 8677, Confidential Blade center Servers (HS20, HS21), Lenovo workstation’s (D2, D3, D10, D20), Confidential P520, P550, P560, P570, P575, P595, Confidential IntelliZpro-9228, MAC pro workstation’s, DELL Poweredge 1650,2850,2950,6400, SUN SPARC workstations (A21, A22, A70, A89), NFS, NIS, DNS,PICS, Preload Assist Servers.

Confidential, Dallas, TX

Linux Administrator

Responsibilities:

• Installation, configuration and OS upgrades on Red Hat Linux 4.x, 5.x; AIX 5.2/5.3/6.1.
• Configuring Kickstart Servers and booting the images using PXE in Red Hat Linux.
• Installation of patches and other software packages on Linux and AIX Servers.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Configure HACMP for a clustering environment on AIX servers and administered the virtualization environments consisting VIO servers.
• Use ILO/IMM/HMC for remote access of servers on Linux/AIX respectively.
• Administration for multiple Sun hardware, this involves creating domains, adding/deleting system components.
• Administration and Troubleshooting Solaris servers running business critical application & WebLogic applications.
• Used Veritas File system (VxFS) and Veritas Volume Manager (VxVM) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• Installed and Configured Sun availability Suite 3.5 to implement Point-in-time snap shots and remote mirroring.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Installing, configuring and deploying applications on Weblogic Application Server 8.x, 9.x.
• Installed WebLogic 8.1 with SP5 Server and configured Domains, Admin and managed servers for applications to be deployed.
• Implemented and configured Backup policies and Storage Units using Veritas Netbackup 6.5.
• Managing disk storage with Veritas Volume Manager 3.5/4.1 (VxVM) and Solaris Volume Manager with Veritas File System (VxFS).
• Installation, configuration, and maintenance of Sun Solaris 10 servers.
• Upgrading Solaris 8/9 to Solaris 10 using live upgrade and manual upgrade.
• Performed file system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Experience in internet services installation, configuration and maintenance (WWW on apache, SMTP on sendmail, POP3 and LDAP) on Linux platforms, including security of provided services, ability to troubleshoot common and very uncommon problems, high availability services.
• Experience in Implementation Apache, Tomcat 5.5 for the Java Servlet and Java Server Pages technologies.
• Administered the UNIX System for clustered HP Servers with fiber attached SAN storage.
• Maintained & troubleshooted SAN and Fibre card related errors on UNIX
• Discovered and attached LUNS provided by the Storage team to the required Unix/Linux Servers.
• Maintained & Troubleshooted Storage Disks from Confidential and EMC Disk arrays.
• Created disk pools and configured shared virtual disks using Symmetrix Management Console.
• Installing, maintaining, upgrading and supporting Red Hat Linux systems w/ Oracle 10G RAC with Cluster Ready Services (CRS) and Sybase database.
• Installed and configured LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Administered 8-server Red Hat Linux cluster, 6-server fedora core6 cluster, Confidential DS4300 Storage, Veritas Clustering (VCS) and miscellaneous servers.
• Experience in Servers consolidation and virtualization using UML Linux, XEN and VMware virtual infrastructure, VMware ESX, VMware Vcenter.
• Implemented NIS and NFS for administrative and project requirements.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
• Tuning the kernel parameters based on the application/database requirement.
• Configuring SUDO and granting root permission to users for performing certain activities.

Environment: RHEL 3, 4.x, 5, Solaris 9, 10, Oracle 10g, Sun Java System, Nagios, Sendmail, SAN, Netscape, Tomcat, Cisco, Windows, VMware, Netbackup 6.5, BMC Patrol.

Confidential, New York, NY

Linux - UNIX Systems Engineer / Admin

Responsibilities:

• Performing the Linux systems administration, installation, troubleshooting, and customization of AIX 5.1,5.2 machines on pSeries 615, 630, 670 servers, including clustered (SP) servers.
• The entire environment included around 40 AIX Servers and 60 additional servers.
• Responsible for Migration of servers from AIX 5.2 to AIX 5.3.
• System & backup management using Veritas Netbackup Server.
• Confidential RS/6000 SP System Software Maintenance AIX System Dump Generation and sending System Dump to AIX System Support Center.
• Installation of Red hat Linux on Dell, Proliant, and Enterprise Server 4.0.
• Installation of web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping.
• Installation of Oracle10g on Linux, creating database, creating Oracle users & export and importing database, creating roleback segment etc.
• Setup and administration of Lab environment within the datacenter.
• Responsible for Implementing Cloning, Clustering (VCS), Performance tuning and trouble shooting of Confidential WebSphere Application Server.
• Performed WebSphere MQ Messaging administration, monitoring, management and support for AIX and Windows environments.
• AIX systems administration and Disk Management using SMIT.
• Experience in LVM, Kernel and performance tuning on Confidential AIX and Redhat Linux.
• Installation and Administration of TIVOLI Service Desk.
• Managed hardware in Confidential P-series servers using hot-pluggable devices.
• Managing cron jobs, batch processing and job scheduling.
• Software installation and maintenance on AIX and Linux servers. developing and testing a new tcpwrappers package
• Configuring and Administrating of AIX HACMP clusters.
• Tune servers and support Oracle DBAs with installation and Configuration.
• Security, users and groups administration on AIX and Linux.
• Networking service, performance, and resource monitoring
• Performance monitoring with Sar, Iostat, VMstat, MPstat and Other Tools
• Network Monitoring Using Nagios tool.
• Daily backup and restore operations.
• Completed a full migration of UNIX Server (AIX and Linux), including all network services.
• Review Design Documentation confirming to Software Requirements
• Coordinated with other members working from offshore
• Systems administrator providing support for production and development systems.
• Environment consisted of multiple Confidential RS/6000’s (SP, R-series) and X-Window terminals
• Used per v5 for systems tasks as well as C and Korn shell scripting.
• Other standard system administration tasks performed, such as system monitoring, performance usage, network support, and user support.

Environment: RedHat Linux 3/4, Solaris 9, Veritas volume manager, SSH