SUMMARY

• Over 6 yrs. working on Red Hat Enterprise Linux, and Sun Solaris.
• 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 software’s and services.
• 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.
• Worked in maintaining integrity of Linux, Solaris servers by performing operations on a regular and planned way.
• Working knowledge on Linux productions systems.
• Installation and configuration of Web Application servers like Apache, Tomcat and Web logic.
• Have tested various Linux Environments in the Development/Test Stages to help create a well standardized environment and resolutions of any problems if any occurred.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• Proficiency in VMware Installation and monitoring Virtual environments with ESX 3.x servers and Virtual Center 2.x

TECHNICAL SKILLS

Operating System: Solaris 10/9/8, Red Hat Linux (AS/ES 3/4/5/6), Windows NT 4.0/2000/2003/ XP/vista

Hardware: Sun Fire 280R/V 480/4800/3800/12 K/15K, TSeries, MSeries Server, Sun Enterprise 6500/5000/450/420 R,, HP 9000 K,L,N class server, rp8xxx/7xxx, IBM RS/6000, pSeries, Xseries, HP/IBM/Blade Servers.

Storage: SAN EMC Symmetrix 800/ DMX1000, 2000 & 3000, EMC Clariion 500, 600, 700, NetApp NAS 2000/ 3000 series

Web /Application Server: Apache Tomcat, WebSphere, WebLogic.

Cluster: Veritas Cluster Server, Service Guard, Sun Cluster

Languages: UNIX Shell Scripting, Perl.

PROFESSIONAL EXPERIENCE

Confidential, Pittsburgh, PA

Linux/Unix Administrator

Responsibilities:

• Installed and Configured Red Hat Linux servers.
• Worked on more than 600 Linux servers to install and configure applications.
• Decommissioned around 300 Red Hat Linux servers.
• Actively engaged in power maintenance and network maintenance calls where I am responsible to fix issues on Red Hat Linux Servers and Solaris Servers.
• V2V’Ed Red Hat Linux Servers from old IP addresses to new IP addresses using VMware.
• Installation, configuration and Operating System upgrade on, Red Hat Linux 3.0, 4.0, 6.0, and Sun Solaris 8,9,10
• Administrated server consolidation through use of VMware ESX server and VMware Virtual Center
• Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems
• Installed and Configured Web and investigate the configuration changes in the production environment.
• Responsible for multicasting of various components as a system administrator.
• 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.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Configuring SUDO and granting root permission to users for performing certain activities.
• Experience in Bash and Perl scripts for backup and automation.
• Upgrading RHEL 5.0 to RHEL 5.5 using live upgrade and manual upgrade.
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
• Conceptual knowledge of DNS, DHCP
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands. Login to the remote system using sudo, putty, and telnet.
• Linux technical support and prepared technical documentation for decommissioning servers verification.
• Regular backing up of critical data and restoring backed up data.

Environment: Red Hat Linux 3,4.x,5,6 VMware ESX 3.5, Veritas Volume Manager, Sun Solaris 8,9,10, Solaris Volume Manager, Veritas Cluster Server, Web logic 8.1, Samba, Oracle 9i/10g.

Confidential, Phoenix, AZ

Unix/Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Linux, Solaris, Linux operating systems
• Upgraded Solaris 8 to Solaris 9 and 10. Configuring SAN Sun Storage.
• Configuration of VERITAS Cluster Server, and maintained service group/packages for failover and redundancy purpose.
• Worked on Solaris 10 container technology, configured separate zones for various applications.
• Involved in Implementing and Administrating enterprise level data backup and recovery.
• Designed and Implemented Backup solution for the 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
• Managed Network troubleshooting applications TCP/IP including Ethernet, IP addressing & Sub netting, routing
• Worked on creating user accounts, user administration, local and global groups on Solaris platform
• Created User Accounts and Network Shares. Configured SUN Workstations as Domain Clients.
• Worked with Storage team to configure EMC SAN, NAS and iSCSI configuration.
• Managed Users for Solaris, and Linux Servers and assigned rights to access network resources.

Environment: RedHat Linux, Solaris 9/8/10, Sun Enterprise 450/420R/250 Servers, Ultra Enterprise 2/1 Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20.

Confidential, Texas

Jr.Linux Administrator

Responsibilities:

• Installation, Configuration & Upgrade of Solaris, AIX, Linux and Windows-NT operating systems.
• Installation Packages and patches.
• Supported 24/7 high availability production servers.
• Monitoring System using HP/ITO, Do kernel tuning to enhance the system Performance.
• Configuration and Administration of DNS, NIS, NIS+, NFS, send mail.
• Installation, configuration and remediation of various Security software
• Installation and configuration of Netscape and Apache web server and Samba Server.
• Jumpstart installation. Writing Shell and Perl Scripting for automation of job.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Interaction with vendors for Hardware and software supports.
• Configuration and Administration of Veritas Cluster.
• Day to day maintenance of Veritas cluster Servers.
• Disk and File system management through Veritas Volume Manager, LVM and SVM.
• Installation and configuration of Apache and Websphere Server in Linux Platform.
• Backup management through Veritas Netbackup. Creation of Volumes and pools and scheduling the job.
• Installation and configuration of Network Printer with Centralized control of print client.
• Database Backup and Recovery. Performance Monitoring and Tuning
• Planning and setup of Disaster Recovery Servers.
• Trouble shooting of day to day system and user problems.
• Arbitrated Customer/User meetings to establish needs, initiated/managed risk assessment team, define expectations and explain capabilities of current technologies.
• Documented (formally) system requirements
• Oversaw customer installation and acceptance testing of the product, Product resided on Sun/Veritas configuration.

Environment: Solaris 8/9/10, AIX 4.x/5.x, Windows NT 2003/2000/ XP, NT, RedHat 5, Sun Enterprise 450/420R/250 Servers, Ultra Enterprise 2/1 Servers, SPARC server 1000, SPARC server 20 Enterprise Servers, SPARC server 1000/20, SPARCstation 10, Sun Sparc Ultra 1,5,10.

Confidential

Jr. Linux Administrator

Responsibilities:

• Installation and configuration of Red Hat Linux, Solaris, Fedora and Centos OS on new server builds as well as during the upgrade situations.
• Log management like monitoring and cleaning the old log files.
• System audit report like no. of logins, success & failures, running cron jobs.
• System performance for hourly basis or daily basis.
• Remotely coping files using sftp, ftp, scp, winscp, and filezilla.
• Created user roles and groups for securing the resources using local operating System authentication.
• Experienced in tasks like managing User Accounts and Groups, managing Disks and Filesystems.
• Configuring & monitoring DHCP server.
• Taking backup using tar and recovering during the data loss.
• Experience in writing bash scripts for job automation.
• Documenting the installation of third-party software’s.
• Configuring printers to the Solaris and Linux servers and also installing third party software’s.
• Maintaining relations with project managers, DBA’s, Developers, Application support teams andOperational support teams to facilitate effective project deployment.
• Manage system installation, troubleshooting, maintenance, performance tuning, managing storage resources, network configuration to fit application and database requirements.
• Responsible for modifying and optimizing backup schedules and developing shell scripts for it.
• Performed regular installation of patches using RPM and YUM.
• Experience managing various file systems using LVM and SVM and also configured filesystems through network using NFS, NAS, SAN methodologies and installed RAID devices.
• Monitored and fine tuning system and network performance for server environments running Solaris, Redhat Linux.
• Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.
• Involved in creating new users, groups and setup their home directories and appropriate access restrictions to software in the Active Directory environment and NIS domains.

Environment: Red Hat Linux 3/4, Solaris 9, Veritas volume manager, SSH, LVM, SVM.