SUMMARY:

• An IT professional with 8+ years of experience in System Engineering/Administration of Red Hat Linux Enterprise RHEL 4.x, 5.x, 6.x, CentOS 4.x, 5.x, Windows 2003, 2008 R2, 2012, Sun Solaris, SuSE, OEL, VMware VSphere ESX/ESXi 4.x, 5.x, 6.x environment.
• Experience in System Administration, System Builds, Server builds, Installs, Upgrades, Patches, Migration, Trouble Shooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on Red Hat Linux Systems.
• Experienced in implementing and maintaining an Apache Tomcat /MySQL/PHP, LDAP, LAMP web service environment.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti, Zabbix, Splunk.
• Experienced on Red Hat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Strong experience in Backup, Job Scheduling, Disk Management, Logical Volume Management (LVM), Logical Partitioning and troubleshooting network problems.
• Working knowledge on Automatic Storage Management (ASM) and experience in Shell scripting (Ksh/Csh/bash/Sed/Awk).
• Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Experience in Server builds using Jumpstart and kickstart.
• Proficient DB administration (Oracle, DB2(AIX and Linux), Mongo, MySql, Sybase and SQL) knowledge for maintaining, pruning, and performing required DB tasks.
• Expertise in understanding of error logging subsystem, resolving technical issues by Diagnosing, Problem determination, Troubleshooting and providing Root Cause Analysis.
• Experience with LVM, User & System Resource Management, Job Scheduling and Paging Space Management.
• Experience in Shell scripting to automate system administration jobs as per the customer requests.
• Experienced in monitoring system performance and check the status of the system using utilities such as SAR, TOPAS, VMSTAT, IOSTAT, NETSTAT etc.
• Installed, Supported Application and middleware WebSphere Application Server, IBM HTTP/ Apache Web Servers in AIX and LINUX environment for various projects.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, NIS+, OSPF, LDAP, DNS, NFS, DHCP, NAS, FTP, SSH and SAMBA.
• Experience on Installation of VMware ESX, ESXI migration of vm's from one host to another host and also from one data storage to another data storage, Patch management.
• Experience in configuring VMware CPU and memory shares for virtual machines.
• Experience in building VMware virtual machines from templates and CD/ISO image.
• Administration of VMware Virtual Center and virtualization services VMware DRS, VMware HA, VMotion and SVMotion.
• Expert knowledge on configuring hardware iSCSI and NFS storage to VMware ESX (i) hosts from vSphere client.
• Experience in configuring VMware standard vSwitch & dvSwitch.
• Experience incloning VMs and deploy new virtual machines from clones.
• Converted many (P2V) physical servers to Virtual Machines using VMware vCenter Converter part of decommission legacy server’s effort.
• Experience in Virtualizations VMware ESX/ESXi 3.x, 4.x, 5.x, 6.x and Red Hat KVM, hypervisor.
• Strong understanding of VMware Networking concepts like creation of vSwitches, different types of port groups, NIC Teaming and VLAN Problem management on VMware ESX 5.X and Virtual Center and vMotion.
• Excellent experience in installing, configuring and managing DHCP, DNS, WINS.
• Windows 2000/2003/ 2008 and 2008 R2 Server Active Directory Administration.
• Experience in Active Directory, GPOs, DNS, DHCP, File & Print Server, IIS (Web Server), IIS 6.0/7, FTP, Terminal Services, WSUS, Microsoft Clustering.
• Provide Active Directory, Group policy and user profile maintenance.
• Excellent analytical, oral, written, communication and problem solving skills and good Team Player.
• Experience in 24x7 production server support, after hours, weekends, and on-call support.

TECHNICAL SKILLS:

Operating Systems: Linux (RedHat 3/4/5/6), Centos 5.x, 6.x,OEL, Suse 9/10, 11, Sun Solaris 8/9/10, IBM AIX 5/6/7. Windows 2003, 2008 R2, 2012.

Software - File System Management: Logical Volume Manager (LVM), Veritas Volume Manager (VxVM), Veritas Storage Foundation Suite, Veritas NetBackup, Solaris Volume Manager (SVM), MS Office Suite, Vmware.

Hardware: HP PROLIANT DL360, DL360 G3, DL 385; DELL 4500, 6650; DELL POWEREDGE 4400, 6300, 6400, 6850, Cisco UCS.

High Availability (Clustering): Veritas (VCS), Redhat cluster, HP ServiceGuard, RHCS

Server Virtualization: VMWare vSphere ESX/ESXi 3.x,4.x,5.x, Red Hat Virtualization

Application Servers and Web Servers: LDAP Server, JBoss, Apache Tomcat 6.x, and IIS

Storage: EMC, Hitachi, IBM, Netapp

Languages/Scripting: Shell Scripting (Bash), Sed & Awk, HTML, Perl, C, SQL, PL/SQL, and Java.

Networking Services: TCP/IP, DNS, DHCP, Telnet, LDAP, NIS, NFS, FTP/SFTP, SMTP, SNMP, FTP, TFTP, UDP, SSH, Nagios, Routers, Firewalls, & DNS servers

Applications: Weblogic, JBoss, WebSphere, Hadoop, SAP Basis, Puppet, & Chef

Database: MS Access, Oracle(10g,11g) DB, DB2, and MySQL

Backup: tar, cpio, tape backup, MsBackup, Ufsdump, Ufsrestore

Disk Arrays: Sun StorEdge 3130, 6320, 6120, A1000/D1000, EMC DMX 800 and 1000

Mail: SMTP, POP, IMAP, SENDMAIL.

PROFESSIONAL EXPERIENCE:

Confidential

System Engineer (Unix/Linux, VMware)

Responsibilities:

• Installation, Configuration and Administration of RedHat Linux 6/5/4, Solaris 10/9, HPUX and AIX.
• Performed patching of RHEL using yum, up2date package management system utilities for effective package maintenance.
• Supporting infrastructure environment comprising of RHEL and Solaris and AIX.
• Experience with VMware Virtualization using ESXi hypervisor of VSphere.
• Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Rebuilding of kernel in RHEL using mkinitrd image and monitored logs in in-built directories during server bootup.
• Configuration of Network bonding which include Active/Standby and Active/Active.
• Troubleshooting Network, memory, CPU, swap and File system issues, TCP/IP, NFS, DNS, SMTP in Linux and Solaris servers.
• Worked on customizing and compiling the Linux kernel according to the requirements also good in networking concepts and various communication protocols.
• Set up the Jboss, Weblogic, oracle, DB2 connect, WebSphere, MySQL, Tomcat, Apache, Active Directory in Microsoft, sun, Linux and Kerberos server.
• Excellent debugging skills and troubleshooting network related issues both on Ethernet and fiber.
• Preparation of Logical Volume Manager (LVM) with new san luns, LUN online migrations using pvmove and LV mirror commands on Linux servers.Having good experience in Red Hat, EMC storage devices, Disaster Recovery like data Recovery, Hitachi storage devices and veritas Netback up.
• Used System Imager tool for server migration for Linux Servers.
• Installed, configured and managed Oracle Real Application Cluster (RAC) in Linux server.
• Expertise in Global File System (GFS), creating, configuring and managing clusters in SuSE Linux Servers using GFS.
• Installed packages using YUM and Redhat Package Manager (RPM) on various servers.
• Worked with Red Hat Satellite Server which is used to push changes across various servers simultaneously.
• Trained and working on Configuration Management tools - Puppet, Ansible and Git.
• Created Ansible Playbooks to automate server configuration and administration.
• Performance tuning of Virtual Memory, CPU, system usage in Linux and Solaris servers.
• Working as liaison between offshore and end-client in resolving issues and road-blocks.
• Preparing documents and playbooks as needed for various activities and for future reference.
• Implemented and administered VMware ESXi 4.x, 5.x and 6 for running the Windows, Centos, SUSE and Red Hat Linux Servers on development and test servers.
• Installation, configuration and monitoring of monitoring tools like Nagios, HP SiteScope and Cacti.
• Responsible for configuring networking concepts like NIS, NFS, SAMBA, LDAP, SSH, SFTP, SNMP, DNS, DHCP, troubleshooting network problems such as TCP/IP, supporting users in solving their problems.
• Configuring, Managing and Scheduling CRONTABs for App Accounts and Backup management on a regular basis.
• Installation and configuration of Subversion (SVN ).
• Updating patches to keep servers updated against bugs present in the operating system using Red Hat Satellite Server, yum, etc.
• Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.
• Developed scripts for automating administration tasks like customizing user environment, and performance monitoring and tuning with nfsstat, netstat, iostat, and vmstat.
• Created Bash shell scripts to monitor system resources and system maintenance and performed administrative tasks such as System startup/shutdown and Backup strategy.
• Managed the User and Application Account creations, deletions, and setting up sudo access for DBA and application account access.
• Administered VSphere and deployed several VMS based on the capacity consumption by the Host Groups.
• Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
• Installation, configuration and troubleshooting of Teradata Database.
• Installed and configured Splunk for all kind of Application, System logging so that various support team can get information online instead of combing the log files.
• Installed and configured middleware Apache Web Server, Tomcat and jboss servers.
• Worked exclusively on VMware virtual environment.
• Creating Virtual Machines, installing and updating VMware tools, Configuring and managing Virtual network, Virtual disk and memory expansion to the VMs, Vmotion, storage vmotion, high availability(HA), DRS.
• Create a clean virtualized server (fresh install) in VMware, create a virtual machine template, clones and use them to deploy VMs and managing them through vSphere client, vCOPS, Update Manager.
• Creating resource pools and adding the VM’s into the pools. Deploying VM’s from templates.
• Taking care of capacity planning for new clusters. Configuring FT for important Vm’s.
• Configure CPU, memory, and disk partitions (attached storage and SAN) as required.
• Performed P2V and V2V conversions as part of the separation process using plate spin and vmware converter.
• Creating Virtual Machines, installing and updating VMware tools, Configuring and managing Virtual network, Virtual disk and memory expansion to the VMs, Vmotion, high availability, Disaster Recovery Solutions (DRS).
• Creating Templates, deploying a virtual machine from template.
• Handling VM issues requests like Guest operating system Disk expansion, adding CPU, increasing VM Memory.
• Handling Incident tickets through service now. Environment: Red Hat Linux 5/6, SUSE 10/11, VMware ESXi 5.x, Samba, Ansible Nagios, VMware ESXi 5.x, DELL, HP, Cisco UCS, service now, monitoring, solarwinds, Veritas, Solar winds, LDAP, Active directory, zendesk, Vcops, switches, DRS, vmotion, Migration, DR role.

Confidential, Charlotte, NC

System Administrator (Unix, Linux, VMware)

Responsibilities:

• Responsible for 800+ Redhat Linux and VMware servers, providing end-to-end 24x7 server support includes OS configuration and administration, troubleshooting, Kernel and Patch management, app installations and support.
• Installing and configuring new VMs with Redhat Linux 6.x on VMWare ESX server.
• Installation and Configuration of Veritas Volume Manager, Veritas File system and Veritas Cluster Server.
• Extensively worked on NAS volumes, converted NFSv3 to NFSv4 and troubleshooting related issues.
• Automated tasks using Bash Shell scripting language.
• Creating VM NICs, teaming and configuring VLAN PortGroups.
• Working with HP Server Automation for Patch management/Software installation
• Setup DNS, NFS, SAN, NIS Servers, Diskless clients and Auto clients and automated the file systems using direct and indirect maps. Also setup entries in /etc/exports and mounted the disks onto the client systems by adding entries to /etc. / FSTAB.
• Storage Management in AIX - Logical and Physical Volume Configuration and maintenance, Monitoring systems, CPU, memory and disk utilization using topas, sar, vmstat, netstat etc.
• Troubleshooting booting related issues, creating boot records, working with system maintenance mode, recovering root password, fixing booting related issues, working with bootlist.
• User Management - Creating, maintaining, and removing users and groups. Security settings on user accounts and groups. Working on System Management Services SMS and changing boot list order etc.,
• NFS Administration, exporting file systems, mounting exported file systems, working nfs daemons and fixing any mounting issues.
• Configuration of new devices using cfgmgr - faulty disk Replacement incase of any disaster.
• Responsible for the AIX Migration Installation from 5.2, 5.3 to AIX 6.1 both regular and NIM Alt disk migration.
• Utilized puppet, chef, ansible for automation of day to day tasks and pre and post validation.
• Installing MySQL on Linux Server and securing installation.
• RPM and YUM package installations, patch and other server management.
• Installing and configuring Apache and supporting them on Linux production servers.
• Administration and setting up Oracle RAC on RHEL 5.x servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as iptables, firewall, and TCP wrappers and NMAP.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems using shell scripting and CRONTABs.
• Installation of Apache, Weblogic and Tomcat Web servers.
• Creating SSL certificates for windows servers and Solaris/Linux Servers.
• Administered VSphere and deployed several VMS based on the capacity consumption by the Host Groups.
• Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
• Performed V2V Migration using VMware converter as well as SRDF and swing LUNs. Also worked with Platespin for some P2V and V2V.
• Experience in using VMware vMotion to move VM’s from One Datacenter to another datacenter.
• Created clones and templates of Virtual Machines, deployed VMs from templates and configured them.
• Created & Troubleshoot Virtual Networks and vSwitches, distributed switches.
• Experience with VBlock and components and Cisco UCS administration.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Reducing the downtime/resolution time by pinpointing the errors and coordinating with development team and third party software providers.

Environment: RHEL 5/6, Tomcat, Apache 1.2/1.3/2.x, Oracle 11g/10g/9i,HP, Cisco UCS, HP, automation,VM ESX 4.x /5.x, Data Stores, VMware Update Manager, vmotion, puppet, chef, ansible, storage vmotion, Templates, TCP/IP .

Confidential, Oakland, CA

System Admin (Linux, VMware, Windows)

Responsibilities:

• Worked on variety of Linux platforms Red Hat Linux, Solaris which includes installation, configuring and maintenance of applications on this environment.
• Installing Red Hat Linux using Kickstart and applying security policies for hardening the server based on the company policies.
• Prepared SAN migration procedure for systems configured with Veritas, Oracle AMS.
• Performing Initial analysis and determining qualification of Linux and HPUX servers into IBM SVC storage migration and Frame-to-Frame (F2F) migration categories using HBA (firmware, driver, OS versions) and Matrix Model.
• As part of migration- created new physical volumes, extended to volume groups with new LUN’s, mirrored data to the new storage, split the mirrors, remove old EMC luns from the system.
• Ensured proper communication with Application team, Storage team, Backup team and UNIX-L2 team .
• Worked with LVM, IBM SVC, EMC Symmetrix, Mondo, TSM, HP Service Guard, Veritas Volume Manager (VxVM), Veritas Cluster (VCS), RSYNC, Smart Sheet and BMC Remedy.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client and migrating servers between ESXi hosts.
• Created linux VM’s by deploying OVF templates and did basic setup as in giving IP address, installing VMware tools etc.
• Worked with VMTools Deployment, P2V, V2V, VR, analyze the Storage requirement.
• Deployment and Configuration of new Blades, OS installation and configuration
• Experience in Developing KORN, BASH shell scripts to automate cron jobs and system maintenance.
• Installed and Configured JBOSS on Java Applications
• Administration, package installation, configuration of CentOS 5/6.
• Installing MySQL on Linux Server and securing installation.
• RPM and YUM package installations, patch and other server management.
• Installing and configuring Apache and supporting them on Linux production servers.
• Kernel compilation and patch up gradation on Linux servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as iptables, firewall, and TCP wrappers and NMAP.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems using shell scripting and CRONTABs.
• Monitoring the File System, CPU load for better Performance and system performance parameters using iostat, vmstat and prstat.
• Installing, configuring Win 2003, 2008 R2.
• Managing Domain Controllers.
• Configuration of domain Naming server (DNS) and Dynamic Host Configuration Protocol (DHCP).
• Create and Clone Virtual Server configure.
• Create User Accounts, user profiles, Implementing Group Polices.
• Implementation and administration of DNS, WINS, DHCP, Web servers, Proxy Servers and domains.
• Monitoring system performance, tune-up kernel parameter, adding/ removing/ administering hosts, users, disks on DNS / NIS domain.
• Backing up and restoring files across the network.
• Creating VM snapshots for test and deployment as well as in production change controlled release environment.

Environment: RHEL 5.x, AIX 6.x, DNS, DHCP, Weblogic, Veritas, Satellite Server, Oracle 11g/10g/9i, VM ESX 4.x /5.x.

Confidential, Falls Church, VA

System Admin

Responsibilities:

• Installation, Configuration and Upgrade of Red Hat Enterprise Linux 5/4, Centos 5.x, VMware 4.x, 5.x.
• Performed automated installations of OS using kick start for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux & Ignite for HP-UX.
• Installing and upgrading of OS packages and patches as required.
• Efficiently managed disk and file system through VERITAS VM, SVM and LVM .
• Upgrading applications to appropriate versions as required on QA systems.
• Administering and troubleshooting High Availability Clusters using VERITAS Cluster Server, Sun Cluster, Red Hat Cluster Server and HP Service Guard on various business critical database & application production servers.
• On-call pager support for integration and remediation of servers and attached peripherals and escalate issues to appropriate groups.
• Administrated server consolidation program through use of VMware ESX server and VMware Virtual Center
• Gathered VM requirements from the Performance Team, placed reservations and deployed Virtual Servers in Test and Production Environments.
• Experience in VMWARE ESXi 4/5 and vSphere and managed VM resource upgrades, Cold migration of VM from once vCenter to other.
• Handled and documented Cold Migration issues and IP, SAN, Network bandwidth and VLAN constraints.
• Performance Management & Tuning of RHEL.
• Hands on experience on various cloud computing products such as Amazon Web Services EC2 and VPC.
• Removing Virtual Resource from the VIO Server and Decommissioning the VIO Client LPARS.
• Develop Shell scripts (Korn) for automating the batch jobs.
• Responsible for the upgrades to AIX and software packages and maintained them in accordance with established policies, procedures and service level agreements.
• Installed and Configure DNS, Websphere, DB2 Database and Tivoli storage manager.
• Work with DBAs on installation of DB2, restoration and performance tuning.
• Patched different software using RedHat Package Manager and YUM.
• Migrated datacenters and converted physical servers to virtual servers using VMware and HP Blade servers.
• Created and managed resource pools for Virtual Machines.
• Monitoring and managing performance of ESX servers and Virtual Machines using Virtual Center Server for HA, DRS.
• Involved in live migration of Virtual Machines and Virtual machines files using the VMotion and Storage VMotion.
• Handled the VMware solutions to support multiple storage connectivity options such as FC-SAN, iSCSI, NFS (NAS) and internal storage.
• Administered and setup print servers in Windows 2003/2008 R2 server.
• Creation & Troubleshooting of Virtual Network, ESXi & Virtual Machines.
• Creation of templates from VMs and deploying VMs from templates.
• Administer for windows server 2003,2008 R2 and all related server services including FTP, AD, DNS, DHCP and VPN.

Environment: RHEL 5.x CentOS 5.x, Apache, Tomcat, Jboss, Oracle 11g/10g/9i, VMware ESXi 4.x /5.x System Admin (Linux, Windows)

Responsibilities:

• Installation, configuration and upgrade of RHEL 4.x,5.x operating systems.
• Implementing file sharing on the network by configuring NFS on the system to share essential resources.
• Performed package and patching management and debugging.
• Built high-end production servers, creating and loading images on Linux, Solaris, and HP-UX.
• Performed configuration and troubleshooting of services like NFS, NIS, NIS+, DHCP, FTP, LDAP, Web servers, Samba server, and Apache server.
• RPM package administration using RPM Build.
• Managed the installation and configuration of Windows 2003/2008 R2 Server/Workstations.
• Have Knowledge on Active Directory, Domains, Organizational units (OU), Trees and Forests.
• Created user and computer accounts on the Active directory users and computers.
• Configured servers for DHCP, WINS and DNS services.
• Installation, configuration and Administration of IIS web servers.
• Administration of print servers and troubleshooting print jobs.
• Installation and configuration of Domain Controllers and implementation of trusts.
• Troubleshot and resolve computer problems; built and upgrade systems; install software and perform general troubleshooting.
• Responsible for providing for 24x7 support for production and responding to users’ tickets from remedy.
• Administered Network File Systems using Auto mounter and administering user and OS data files in NIS and NFS environment on both Redhat Linux and Solaris environments.
• Log management like monitoring and cleaning the old log files.
• Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ and Sendmail on RedHat Linux.
• System audit report like no. of logins, success & failures, running cron jobs.
• Worked with the VMWARE team and ensured all the VMs are working without any performance issues.
• Installing, configuring and Maintenance and Systems Development of AIX 4.3/5.1/5.2/5.3 servers.
• Extensive use of LVM, creating Volume Groups, Logical volumes, and disk mirroring, fixed the Problem of Stale and partially mirrored Logical volumes.
• Perform User Account management, data backups, and user’s logon support.
• SWAP box configuration, Implementation of disaster backup and recovery.
• Managed Patching and worked on Firmware Updates for Blades and Enclosures.
• Monitor system capacity and performance using standard tools such as topas, sar, vmstat, iostat, etc.
• Work with performance and DBAs on installation of DB2, restoration and performance issues.

Environment: RHEL 4.x,5.x Windows 2003, 2008 R2, VMware, AIX, DNS, DHCP, user accounts, HP, DELL, Solar winds.