PROFESSIONAL SUMMARY:

• Over 7+ years of experience as a RHEL … Sun Solaris 8/9/10SLES 10/11 & Unix IBM AIX 7.x Power7, 6 platforms System Administrator.
• Expertise in planning, installation, migration, upgrade OS (AIX, Solaris, Linux), deployment, Production Support.
• Expert in Red Hat Linux 4,5 & 6 of heavy experience in install / rebuild servers. Understanding the business requirements, capacity planning, Vendor management, team co - ordination, business migration. Patching and Packages rollouts.
• Installing and configuring various services like DNS, DHCP, NFS, Sendmail, Apache Web Server, Samba, SSH, http, RPM, package management.
• Extensive experience in configuring Global File System (GFS) and Zeta byte File System (ZFS).
• Experienced in OS (Solaris, Linux, AIX) level patching and level recovery.
• Thoroughly documents the steps in the implementation of a task.
• Experienced in Apache/PHP/MySQL/Postfix/Sendmail/DNS/BIND.
• Experience in Linux and Solaris Virtualization implementations such as VMware and Solaris Zones.
• Experienced in supporting Red Hat Satellite server, RHN.
• Strong knowledge in DNS, DHCP and IP addressing. Experience administering Active Directory and group policies.
• User account Management in a Complete NIS environment, pushing maps to NIS slave servers with all the user home directories in auto mounted production systems.
• Expertise in systems performance monitoring & tuning: CPU, disk, memory and network utilization.
• Experience working on boot loaders like GRUB and LILO and also upgrading Kernel on Redhat Linux servers.
• Experience in installing, upgrading, removing packages or software using Redhat package manager (RPM).
• Experience in troubleshooting and resolving network issues related to the servers.
• Expertise supporting and installing third party software on workstations.
• Extensive knowledge of NIM, Jumpstart, Kickstart.
• Experience migrating applications from 4 to 5 and to 6 (manual upgrades).
• Experience in creating VM for Linux, Solaris. LVM, ZFS and zone management.
• Extensive knowledge of Spark enterprise servers, HP and IBM servers.
• Strong knowledge of Korn Shell scripting.
• Extensive practical knowledge in VMware ESXi/ESX, VCenter server VMware Converter, VMware HA, DRS, DPM and VMware Update-Manager.
• Extensive experience on Virtual Machines O/S installation, setting up VM priorities, Cloning, Creating Templates and Snapshots.
• Extensive knowledge in Physical to Virtual (P2V) and Virtual to Virtual (V2V) conversions by using VMware Converter and vCenter.
• Good knowledge on in VMware virtual architecture.
• Experience in Troubleshooting and vCenter Site Recovery Manager and patching ESX Servers and VMs with VMware Update Manager.
• Experience in ESX and ESXi … and vSphere …
• Worked on vCenter server … for managing multiple ESX servers.
• Build and troubleshooting experience with ESX servers and ESXi servers

TECHNICAL SKILLS:

VMware: Virtualization VMware VSphere ESXi ESXi 3.5, vCenter server, VMware, VMotion and SvMotion, VMware Converter 5, 4 and 3(for P2V and V2V conversions).

Operating System: Linux (Redhat 5/6), CentOS 6.5, Fedora Core 17, Oracle Solaris 9/10, Solaris Sun SPARC 5.6, HP-UX 10/11, VMware ESX/ESXi.

Networking: TCP/IP, DNS, NFS, DHCP, Routers, Switches and LAN s.

Reporting Tools: MS Office and MS-Visio.

Languages: Shell Scripting, SQL.

Database: Oracle 11g.

PROFESSIONAL EXPERIENCE:

Confidential, Sunnyvale, CA

Linux Administrator

Responsibilities:

• Administration of RHEL 5, 6 that includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Installing Redhat Linux using Kickstart and applying security polices for hardening the server based on the company policies.
• Administration, package installation, configuration of Cent OS 5.x.
• Providing 24/7 technical supports to Production environments.
• General Maintaining and performing daily health check on the servers.
• RPM and YUM package installations, patch and other server management.
• Creating new file system, monitoring disk usage, checking and backup of log files administration and monitoring the disk based file system.
• Cron and Swap Administration.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Kernel compilation and patch upgradation of Linux Servers
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, and TCP wrappers, NMAP.
• Creating policies, patches, and scripts and executing them on Linux, Solaris servers.
• Worked with project manager and auditing teams to implement HIPPA compliance.
• Worked and performed data-center operations including rack mounting, cabling.
• Installed and verified that all Linux patches or updates are applied to the servers.
• Installing, configuring Apache and integrating them.
• Adding servers to the domain and monitoring them using spectrum, sitescope and cacti.
• Responsible for documentation of backup status reports.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
• Experienced working with Rackspace, Amazon AWS and Linode DNS manager.
• Experienced working on Image Magick Software where we used to edit the Images.
• Creating and Managing Users / Group accounts and set up a user's work environment.
• Monitoring the File System, CPU load for better Performance and system performance parameters using iostat, vmstat and prstat.
• Applying Access Control (ACL) on the files in order to allow multiple users to access a particular file or directory in which they are having limited permissions like Sticky Bit.
• LVM Creation and Maintaining the LVM.
• Providing 24/7 supports for our client.

Confidential, Irvine, CA

Linux Administrator

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 the support of building the 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
• Disk and File system management through Solstice Disk Suite on Solaris and other logical volume manager for other flavor of UNIX.
• 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.
• Implemented NFS, DNS and NIS under SUN.
• Performed the administration of the Domain Name Server and configuration of the 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 the network
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents.

Confidential, Stamford, CT

Linux/ VMware Administrator

Responsibilities:

• Installing and Configuring Linux and other required applications (Java, MySQL and other required applications) on production servers.
• Configuring and maintaining LVM, FTP and NFS in Linux.
• Schedule the cron - jobs as per the requirement.
• Maintaining the connectivity between Linux and Windows Environments.
• Responding to user problems and ensuring that they are rectified.
• Install new software releases, system upgrades, evaluate and install patches and apply security fixes relevant to their systems and implement virus protection procedures.
• Involving in backups and configuring on weekly basis.
• Configuration and Administration of DHCP server and naming services like DNS.
• Monitoring application manager, Installation and Configuration on Linux.
• Knowledge in writing in writing Shell scripting and configure cron - jobs.
• Creating VM Snapshots for test and deployment as well as in production change controlled release environment.
• Installing and upgrading of ESXi server 4.x/ 5.x using remote management utilities like ILO and DRAC.
• Installation and upgrading guest OS on ESXi server.
• Evaluate and recommended changes to current and future network environments to meet the company's needs.

Confidential

Linux/ VMware Administrator

Responsibilities:

• Migration of applications from older Sun/Solaris hardware over to HP blade environment running Redhat Linux (RHEL4, 5, and 6. P2V migrations of hardware servers to VMware environment running on ESX V4.1 servers (HP Proliant hardware).
• Expertise DevOps Support/Monitoring
• Use strong Linux and Windows Server Administrator skills to accomplish website migrations setup, and restore websites and troubleshoot hardware and software issues as they arise. ·
• Redhat Linux server administrator, including security patching, kernel tuning, RAID disk array mgmt, software packaging and installation using RPMs.
• Customize the migrationlife cycle concepts and implement the best practices that ensure quality standards and less downtime through the process.
• Associated for running jobs for migrating different client application servers from Solaris to Linux Environment.
• Involved in Raising service now tickets for creating repositories. Daily kickoff call with team and getting project migration information.
• Performed data migration across multiple UNIX/Linux(RHEL/OEL/Solaris/HPUX) servers, and Windows Servers.
• Upgraded and maintained software packages on servers using RHEL Satellite and Repository servers.
• Build new Virtual machine and physical server.
• Managing the VMware ESX and ESXi server 5.5, 5.1, 4.0.0 and 3.5.0 based on requirement.
• Installing and Managing Virtual Center 5.5.Upgrading from VMware ESX server from 3.5.0, 4.0.0, and 5.0 in environment.
• Install and configure the hardware agents on the ESX servers for Hardware monitoring and alerts (SNMP & Open Manager).
• Installed packages using YUM and RPM.
• Frequently checked ESX server logs for any problems and troubleshoot whenever necessary.
• Monitored Hardware console for any hardware issues. Troubleshoot any operating systemissues.
• Worked with application team in resolving any issues related application installed on the servers.
• Created Root Cause Analysis (RCA) for any server outages and server problems.
• Monitored ESX server alarms and VM's alarms and acted on those incidents to resolve.
• Created change tickets for the changes made on ESX servers and guest OS
• Used VMotion to Hot and Cold migrated VM's from one ESX server to different ESX server.
• Implemented V2V and P2V conversion using VMware Converter.
• Proper power down and up process during Maintenance of ESX hosts or power outage.
• Taking Snapshots in the environment. Creating templates as per various business requirements.
• Coordinating with various vendors for hardware related issues.
• Adding new user and assigning permission and shared resources rights.
• Managing and troubleshooting AD users login problems.
• Attend team meetings, change control meetings to update configuration / installation progress and upcoming changes in environment.
• Creating Change Controls, Resolving Incident Tickets and Problem Tickets using Service-Now ticketing tool, and ability to multitask in a fast paced environment under strict SLA and resolve Production Incidents with minimum impact.

Confidential

Linux Administrator

Responsibilities:

• System administration for system running Dell Power edge and Intel processors, running 24/7 environment.
• Daily use Kickstart operations for automation of repetitive tasks.
• System maintenance and application deployment, design and document processes and procedures to automate system tasks.
• Setup all Sun Solaris boxes and set up an email between multiple facilities/ domain and multiple platforms using SMTP and POP3.
• Deployed NFS environment for applications distribution, software development and "auto home".
• Launch internal web server, for file-sharing and automated reports.
• Amanda backup server administration, Dell power vault 124T backups.
• Maintaining and administration of Linux servers (RHEL, UBUNTU, CentOS) and various application system specification, configuration, process monitoring and automation's.
• Software, hardware updates and responsible for server performance, tuning and system.
• Shell scripting, job automation and performance monitoring and maintenance.
• Troubleshooting, debugging, setting up and perform tuning Linux Servers.