SUMMARY

• Around 8+ years of specialized experience in Unix/Linux System Administration, Network Administration and Application Support working on RedHat Linux 4.x/5.x, CentOS 5.x,6.x7.x, SUSE Linux 10, Sun Solaris 8/9/10, and IBM AIX 4.x/5.x/6.1
• Experience in installation, configuration, backup, recovery, maintenance, and support of Several Unix/Linux Servers.
• Worked on remediating/patching ESXi hosts to the latest build number through VMware Update Manager and ESXCli.
• Experience in building Servers usingJumpstart in Solaris, Kickstart in Linux,Ignite process in HP - UXandManual installation.
• Knowledge on OpenStack components like Nova, Cinder, Neutron, Glance and Swift for controlling hardware pools of processing, storage and networking resources throughout a datacenter.
• Experience in implementing High Availability Solutions using VERITAS Cluster, and RedHat Cluster Server.
• Worked on BiOS, Life Cycle Controller and Firmware upgrades.
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC).
• Good experience in setting up of RAID0, RAID1 (mirroring) and RAID5 for data redundancy using Veritas Volume Manager and Veritas File System.
• Extensively worked on tools like Veritas Volume Manager (VxVM) and Veritas file System, Logical Volume Manager (LVM), Solaris Volume manger (SVM).
• Installation and upgrade of Packages and Patches configuration mgmt, version control, service pack & reviewing connectivity issue regarding security problem.
• Implemented day-to-day tasks in RedHat Linux and Sun Solaris include upgrading packages, kernel, and drivers.
• Configure multipathing for SAN Disks in Hitachi HDLM, EMC Powerpath and AIX MPIO.
• Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in RedHat Linux and Solaris.
• Experience in configuration of NIS, NIS+, LDAP, DNS, DHCP, NFS, LDAP, Automount, Sendmail, FTP, remote access, Active Directory, Security management and Security trouble shooting skills.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at.
• Experience on webservers such as Tomcat 5.x/4.x/3.x & Apache Server 2.x/1.x.
• Experience in Installation of Oracle, MS SQLServer and MYSQL.
• Knowledge in configuring Global File System (GFS) and Zetta byte File System (ZFS).
• Experience in VMware ESX/i Server to build guest OS using cloning.
• Analyze, troubleshooting, and resolve RedHat Linux and Server HW, Network problems in a Production Server environment.
• Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
• Experience working with production and 24 x 7 on call environments.
• Good team player, strong interpersonal and communication skills combined with self-motivation, initiative and the ability to think outside the box.
• Managed Patches, Upgrades and Licensed Products for System software on all flavors of UNIX and Linux Servers.

TECHNICAL SKILLS

OPERATING SYSTEMS: Linux (RedHat 3.x, 4.x, 5.x, SUSE 10, Cent OS), Sun Solaris 8.0/9.0/10.0, HP-UX (10.20, 11.0, 11.11, 11.23, 11.31), AIX (5.1L, 5.3L) Windows 2000/2003/2008, VMware ESX/ESXi 4.x/5.x

HARDWARE: SUN Enterprise E 5000/5500/4500/450/420 R/250/6500, Sun Fire (280R, V480,3800,4800,6800), T Series, M Series, IBM RS/6000, P Series (520, 550, 570, 575, 590, 595, 630, 650, 670, M80, S80, H70 and H80), IBM ESS (Enterprise Storage Server), DS8000, IBM 3494, 3583 Automated Tape Library, Brocade, HP DL (380s and 580s), DELL PowerEdge (1650,2850,2950,6400,M620,M820,M910).

PROGRAMMING LANGUAGES: Unix Shell Scripting (Ksh/Bash), Perl

WEB/APPLICATION SERVERS: Apache Server 2.x/1.x, Tomcat 4.x/5.x, Web Sphere Application Server 5.x/6.x, IBM HTTP Server 6.x, WebLogic Server 8.1/9.1/9.2, HTML, DHTML, XML.

CLUSTER: Veritas Cluster Server, Redhat Cluster Server, HP Service Guard

APPLICATIONS: HACMP, Samba, Tivoli (TSM), Veritas NetBackup, Veritas Volume Manager, LVM, EMC Powerpath.

NETWORKING: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

PROFESSIONAL EXPERIENCE

Confidential, GREENSBORO, NC

LINUX/UNIX SYSTEM ADMINISTRATOR

RESPONSIBILITIES:

• Install and configure VMware ESXi Hypervisor on the Physical Hardware.
• Configuration, management, monitoring, maintenance and troubleshooting of all RedHat LINUX servers.
• Employ high availability strategy for all Redhat LINUX servers to provide excellent uptime.
• Worked on remediating ESXi hosts to the latest build number through VMware Update Manager and ESXCli.
• Trouble shooting issues related to ESX host, HA, DRS, Storage, Network and VMware update manager.
• Deploy Virtual Machines and use Clones, Snapshots. Create the datastore for storing VMs and data.
• Upgrade OS and Firmware for LINUX SUSE servers.
• Customizing guest operating system on Virtual Machines.
• Experience with Server and Desktop Management Support, Analysis and Maintenance.
• Installing Red Hat Linux using Kickstart and applying security polices for hardening the server based on the company policies.
• Knowledge on BMC Blade Logic to upgrade or apply latest security patches and vulnerability’s to the Windows and Redhat Linux servers.
• Script creation to automate repetitive administration and application tasks.
• Experience on updating latest iDRAC firmware for Rack (monolithic) and Blade (modular) servers.
• Planning & implementation of scheduled changes per change management policies.
• Creating and Managing user accounts, system security, performance tuning, change management, Documents and procedures.
• Experience on health-check and performance analysis of the virtualization/cloud environment, servers, storage, network, backup, and DR systems.
• Performed sizing calculations of VMware environments based on current systems and future growth.
• Good knowledge with Windows and Unix clustering on VMware.
• Managed UNIX Infrastructure involving maintenance of servers and troubleshooting problems in environment.
• Troubleshoot issues related to Linux and Windows servers.
• Worked on P2V and V2V migrations using VMware convertor in large environments.
• Performed health check, troubleshooting and upgrade of VMware environments to improve sustainability and compatibility with applications, networks, storage, backup, and databases.

ENVIRONMENT: RHEL6.x/5.x, CentOS 6.x, 7.x, SUSE 11, Windows 2003/2008/2012, VMware ESX/ESXi 4.x/5.x

Confidential, FORT WORTH, TX

LINUX/UNIX SYSTEM ADMINISTRATOR

RESPONSIBILITIES:

• Installation, configuration and upgrade of Redhat Linux 3/4/5/6, Cent OS 5.8, Windows 2008 operating systems.
• Configured and installed Solaris and Redhat Linux Servers using jumpstart, Ignite, and Kickstart.
• Remote monitoring and management of server hardware.
• Installation and administration of DNS, NIS & DHCP servers.
• Implementing and Maintaining Apache web server with HTTPS.
• Configured all the services including NFS, FTP, Web servers, samba server.
• Extensively involved in troubleshooting bottlenecks of Memory, CPU, Devices and Network using ps, vmstat, iostat, netstat, sar, snoop, nfsstat and sar commands, tuning the performance.
• Package management using RPM, YUM and UP2DATE in Red Hat Linux.
• Worked on Firewall implementation & Load balancer between various Windows servers.
• Configured IIS on Windows 2008 Servers.
• Configured the systems for TCP/IP Networking with the existing LAN, Setting up SSH and SCP.
• Installed HP Openview Agent on Windows & Linux Servers.
• Worked on upgrading and patching for Linux & Windows Servers.
• Ability to write Shell & Perl scripting.
• Troubleshooting and configuration of Local and Network based printers.
• User, Group Administration and Advanced File Permissions.
• Maintain security for the networked environment while allowing users to access all data and software remotely.
• Worked with various vendors for setting up the testing-lab.
• Analyze, troubleshooting, and resolve RedHat Linux and Server HW, Network problems in a Production Server environment.
• Experience working with production and 24 x 7 on call environments.

ENVIRONMENT: RHEL 6.x/5.x, Cent OS 5.8, Apache 1.2/1.3/2.x, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x

Confidential

LINUX ADMINISTRATOR

RESPONSIBILITIES:

• Evaluate, install, test, configure, maintain, tune, and troubleshoot Solaris 9/10, Red Hat Linux AS 4/5, HP-UX 11.23/31, AIX 6.1/5.3 operating system software and third party commercial off-the-shelf (COTS) products with primary responsibility being for the UNIX operating systems.
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in HP-UX, AIX and Linux.
• Creating metadevices, mirror & maintained root disks using Solaris Volume Manager(SVM).
• Worked on migrating data from EVA,XP to 3-PAR Storage on Linux.
• Package management using RPM, YUM and UP2DATE in Red Hat Linux.
• Extensively worked on tools like Veritas Volume Manager (VxVM) and Veritas file System, Logical Volume Manager (LVM), Solaris Volume manger (SVM).
• Experience in building Servers usingJumpstart in Solaris, Kickstart in Linux,Ignite process in HP-UXandManual installation.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux.
• Experience in implementing High Availability Solutions using VERITAS Cluster, HP Service Guard and RedHat Cluster Server.
• Extensive experience in configuring Global File System(GFS) and Zeta byte File System(ZFS).
• Installed various softwares like TWS,COBOL,NPUM/UNIFI,HPSA on Linux.
• Created luns in EVA and presented luns to Linux/Windows Servers.
• Good working experience with Redhat Satellite Server for upgrading and patching Linux Servers.
• Managed Patching and worked on Firmware Updates for Blades and Enclosures.
• Ability to write Perl and Shell scripting.
• Created/used LDOM in Solaris 10 and installed multiple OS.
• Creating metadevices, soft partitions, mirroring the devices and metasets.
• Analyze, troubleshooting, and resolve RedHat Linux and Server HW, Network problems in a Production Server environment.
• Experience working with production and 24 x 7 on call environments.

ENVIRONMENT: RHEL 5.x/4.x, Solaris 8/9/10, Sun Fire, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x.

Confidential

LINUX /UNIX SYSTEM ADMINISTRATOR

RESPONSIBILITIES:

• Installation, configuration and upgrade of Solaris 9/10, Redhat Linux 3/4/5, HP-UX 11i, AIX 5.3 operating systems.
• Configured and installed Solaris, HP-UX and Redhat Linux Servers using jumpstart, Ignite, and Kickstart.
• Worked on Creating Local zones and Branded zones on Solaris Containers global zone and migration of the applications on to these zones from the physical servers.
• Experience in installing, configuring and monitoring VERITAS Cluster Server (VCS), Service Guard and Redhat Cluster Server in High Availability Environment.
• Applied recommended OS Patches, Kernel upgrades using Solaris Live Upgrade on Production and development servers.
• Worked on Live Upgrade, migrating from UFS root file system to ZFS file root system using lucreate, luupgrade, luactivate.
• Performing periodic HBA (LPFC,QLC) firmware and driver upgrades for proper and smooth operation of Tivoli Storage Manager(TSM).
• Configured Solaris IPMP and Linux Bonding. Worked on Storage multipathing.
• Extensive experience in configuring Global File System(GFS) and Zeta byte File System(ZFS).
• Worked on installing and configuring VMware/ESX Servers for virtualizations.
• Creating metadevices, mirror & maintained root disks using Solaris Volume Manager(SVM).
• Extensive use of Logical Volume Manager (LVM), creating Volume Groups, Logical volumes and disk mirroring in HP-UX, AIX and Linux.
• Extensive experience working on Solaris Volume Manager, creating Metadevices, Soft partitions, Mirroring the devices and Metasets. Space allocation to the Metadevices, detaching and clearing the devices if not in use.
• Involved in Configuration of Control domain on T-series servers and creation of Guest LDOMs on them for each different applications.
• Create automated Jumpstart environment for Solaris standard builds for WEB, APP and DB servers.
• Supported Oracle RAC (Real Application Cluster ) Servers running on Linux with GFS and Solaris with SFRAC.
• Extensively involved in troubleshooting bottlenecks of Memory, CPU, Devices and Network using ps, vmstat, iostat, netstat, sar, snoop, nfsstat and sar commands, tuning the performance.
• Tuning of TCP/IP, LOM, System Controller(SC) in cluster environment.
• Package management using RPM, YUM and UP2DATE in Red Hat Linux.
• Developed technical documents like handbooks, document installation configurations, and proposed resolutions for support processes .
• Responsible for Daily Backup maintenance through Tivoli Storage Management(TSM).
• Provide technical assistance to the application development area and co-workers about system analysis, design and programming.
• Administrative scripting with Perl and Shell.
• Communicate with the user community and co-workers to assess needs, resolve problems, and provide technical assistance where necessary relating to UNIX administration functions, and software running on UNIX platforms such as Apache, WebSphere and Oracle9iAS and COTS third party software.
• Assist in the creation of policies and procedures that will be sent through a formal clearance process.

ENVIRONMENT: RHEL 5.x/4.x, Solaris 8/9/10,HP DL580-DL380 G3,G4,G5,Dell PowerEdge, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x.

Confidential

LINUX SYSTEM ADMINISTRATOR

RESPONSIBILITIES:

• Installation, Configuration and Administration of Solaris 8/9/10, HP-UX 11.x, AIX 5.3, and Linux (RHEL 4/5, SLES 10).
• Installed, Configured and Maintained Debian/RedHat Servers at multiple Data Centers.
• Configured RedHat Kickstart server for installing multiple production servers.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux/Debian Servers.
• Hands on experience working with production servers at multiple data centers.
• Involved in writing scripts to migrate consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Installed and configured monitoring tools munin and nagios for monitoring the network bandwidth and the hard drives status.
• Automated server building using System Imager, PXE, Kickstart and Jumpstart.
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Veritas Cluster Server in Solaris, Redhat Cluster Server in Linux and HP Service Guard in HP environment.
• Automated tasks using shell scripting for doing diagnostics on failed disk drives.
• Configured Global File System (GFS) and Zetta byte File System (ZFS).
• Troubleshooting production servers with IPMI tool to connect over SOL.
• Configured system imaging tools Clonezilla and System Imager for data center migration.
• Configured yum repository server for installing packages from a centralized server.
• Installed Fuse to mount the keys on every Production server for password-less authentication on Debian servers.
• Installed and configured DCHP server to give IP leases to production servers.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Implemented the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Configured, managed ESX VM’s with virtual center and VI client.
• Performance monitoring using Sar, Iostat, VMstat and MPstat on servers and also logged to munin monitoring tool for graphical view.
• Performed Kernel tuning with the sysctl and installed packages with yum and rpm.
• Installed and configured PostgresSQL database on RedHat/Debian Servers.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Configuration and Administration of Apache Web Server and SSL.
• Backup management Recovery through Veritas Net Backup (VNB).
• Password-less setup and agent-forwarding done for SSH login using ssh-keygen tool.
• Established and maintained network users, user environment, directories, and security.
• Documented strongly the steps involved for data migration on production servers and also testing procedures before the migration.
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on RedHat Linux.

ENVIRONMENT: RHEL 5.x/4.x, Solaris 8/9/10, Sun Fire, IBM blade servers, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, iPlanet, Oracle 11g/10g/9i, Logical Volume Manager, Veritas netbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x.

Confidential

SYSTEM ADMINISTRATOR

RESPONSIBILITIES:

• Installation, Configuration, Upgradation and administration of Sun Solaris, Red Hat Linux.
• User account management and support.
• Jumpstart & Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux.
• Configuration and Administration of NIS environment.
• Managing file systems and disk management using Solstice Disk suite.
• Involved in Installing and configuring of NFS.
• Package and patch management on Sun servers.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Worked on Solaris volume manager to create file systems as per user and database requirements.
• Trouble shooting the system and end user issues.
• Responsible for configuring real time backup of web servers.
• Log file was managed for troubleshooting and probable errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.

ENVIRONMENT: Sun Solaris 2.6/7, SUN Ultra Enterprise 6000/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.