SUMMARY

• 7+years of IT industry experience as a System administrator levaraging RHEL,SUSE,Solaris,AIX,HP - UX and VMWare Environment & also Experienced with DevOps Environment
• Experienced in implementing and administering VMs using VMware ESXi and vSphere 4.x 4.1x and vCenter.
• Installing, configuring and managing Red hat Enterprise Linux.
• Update ESX version using Update Manager in ESXi hosts.
• P2V migration of Redhat and Windows server.
• Configuring and Installing VDI
• Upgrading/migrating to latest Red hat versions.
• Installing and configuring DNS, DHCP, IIS,ISA,FTP and sendmail servers.
• Installing and maintaining Oracle, MYSQL databases.
• Installing and Configuration of VMWARE vSphere 4.x/5.x servers
• Good knowledge in implementing NFS, NIS and SAMBA in cross platforms.
• Installation of SSL certificates in Linux web servers.
• Knowledge of SAN, NAS, multipathing and HBA drivers
• Good Knowledge on servers integration using CETRIFY,QAS
• Monitor and resizing disk space in LVM as needed.
• Package management using RPM on Linux server.
• KickStart-PXE installations for complete hands-free installation of Redhat.
• Hardware and software RAID management.
• Managed GFS and GPFS filesystem.
• Good working knowledge of AWS Data Pipeline to move data between instances stored in AWS EC2 instances and computer instances.
• Managed all aspects of the software configuration management process including code compilation, packaging/deployment/release methodology, and application configurations used configuration management tools Chef, Puppet.
• Worked on GIT, Jenkins, perforce for code repository and continuous integration tool.
• Experienced in the Installation, Configuration and Administration of Web Sphere & Application Servers like Apache, Tomcat, Active MQ, WebLogic, WebSphere and JBoss Fuse
• Installation and configuration of HA environment using Linux cluster and Veritas Cluster.
• Process Automation and Monitoring using Perl, Python and shell Scripts.
• Backup of file system, data and Disaster Recovery. Experience in troubleshooting issues with Rackspace Cloud Servers by OpenStackconfiguration on Linux operating system.
• Experience on using Tivoli Storage manager,Veritas Volume manager
• Configuring and Monitoring using NAGIOS, ZENOSS and Xymon
• Good experience with Job schedulers(Autosys,Crontab)
• Good Communication Skill and self-motivated with a high degree of attention.
• Good experience working in on site-off shore environments.
• Willing to work on flexible hours for on-call support for 24/7 environment.

TECHNICAL SKILLS

Operating Systems: Redhat AS/ES 2/3/4/5/6, SUSE 9/10, FreeBSD, CentOS 4/5, AIX 6.1, Solaris 9/10, Windows.

Languages: C, C++, FORTRAN and Pascal

Database: Oracle 9i, 10g, DB2, MS Access, MYSQL 3.X.

Web Applications: HTML, XML, PHP

Scripting: Perl Scripting, shell Scripting, python Scripting,Ruby,SQL

Networking: TCP/IP, NFS, Telnet, FTP,LDAP, DNS, DHCP, NAT, HTTP, SQUID, SAMBA,Tivoli

Web/APP Servers: Apache Web Server, Tomcat Web Server, JBoss,Weblogic7.0/8.1/9.x/10.x Websphere 5.x/6.x

Tools: VMWARE,DevOps, AWS,OneOps, Bladelogic, IQtrack, Remedy, Autosys.

PROFESSIONAL EXPERIENCE

Confidential, Bentoville,AR

Security & Operations Engineer (Linux,Unix,windows)

Responsibilites:

• Managing Unix/windows Infrastructure involves day-to-day maintenance of servers & troubleshooting.
• Experienced on the OneOps cloud environment created by Walmart
• Worked with Jenkinscontinuous integration tool and Github repository hosting services.
• Created multiple instances EC2 on AWS (Amazon Web Services) and configured them for QA environment.
• Used Puppet to automate the Client environment
• Devoloped Shell Scripts for cron jobs
• Maintaining and Troubleshooting of FTP Server, Samba Server of the client
• Troubleshooting the activedirectory, Centrify user loging issues .
• Installed and configured LDAP servers & managing LDAP accounts
• Repo management for patching RHEL and SUSE servers.
• Involved in migrating websphere 6.0 to 7.0 on AIX,LINUX and windows
• Approve and work on Change Requests related to Unix, Cetrify and windows environments
• Administration of Identity and access management in Two Platforms windows(NetIQ Identity manager,Active directory), UNIX ( Netmon,LDAP)
• Worked on the SSL Certificates,Creating the keys b/w servers in windows,unix environment.
• Used various networking tools such as ssh, winscp, telnet, rlogin, ftp and ping to troubleshoot daily issues. Also responsible to design, implement and maintain DNS, DHCP,CIFS,NTFS,,NFS and FTP services.
• Performed Red Hat Linux Kernel Tuning, memory upgrades.
• Worked with Networking team, Auth-auth team,IDM team,Build team
• Familier and Experienced with Agile Scrum Development

ENVIRONMENT: Security & Operations, RHEL 5.5/5.6/5.7/6.1/6.2/6.4/6.5 , AIX V6.1, Suse9/10, Centos4/5,solaris 9/10, Windows7, NFS, Websphere,Samba, DNS,OneOps,DevOps,AWS,LDAP, Remedy

Confidential, Reston, VA

Linux/VMware Engineer

RESPONSIBILITIES:

• Managing Linux Infrastructure involves day-to-day maintenance of servers and troubleshooting.
• Installation and Configuration of VMWARE vSphere 4.1/5.0 servers and Created RHEL Guest VM’s for Dev/ Test and production environment
• Installation and Configuration of ESXi hosts.
• Installing Oracle VDI and Configuring Oracle VDI centrers
• Building of VMware Guest and ESXi Hosts
• Used to maintain various RHEL and zLinux boxes on two Vcenters on ESX 3.x and ESX 4.x and used to access these boxes through Vsphere clients.
• Instrumental in working on various VMware RFT and used to work with various VMwareengineers.
• Performed Red Hat Linux Kickstart installations on Redhat 4.x/5.x/6.x, using Cobbler server.
• Performed Red Hat Linux Kernel Tuning, memory upgrades.
• Joined Linux server to Centrify zone, Mapped AD user to Linux server using Centrify.
• Repo management for patching RHEL and SUSE servers.
• Performing security audits and remediating the Vulnerabilities.
• Remediation of FTP on ESP agents and made secure ssh protocol to transfer files using automated scripts
• Worked on continuous delivery pipelines by using Jenkins as a scheduler/orchestrator and developed template based pipelines with embedded logic to work with any project.
• Maintained and administered GIT source code tool also designed branching strategy for GIT.
• Worked on building data center with AWS. Installed SVN, GIT, and Hudson/Jenkins images on AWS.Build servers using Kick Start, Red Hat Satellite Server, and VSphere Client.
• Working with Logical Volume Manager and creating of volume groups/logical and performed Red Hat Linux Kernel Tuning.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting
• Responsibilities include designing and developing new back-end services, maintaining and expanding our AWS infrastructure, and providing mentorship to others on my team.
• Installation & Configuration of software packages in Red Hat Linux. (Using both yum and rpm installations)
• Participated in migrating environment from 4.x and 5.x versions to 6.4
• Coordinate with vendors for upgrade, maintenance of hardware and OS related calls.
• Worked on chroot Jail (jailed sftp), Creating and supporting SFTP users.
• Network Monitoring Using Zenoss.
• Used various networking tools such as ssh, winscp, telnet, rlogin, ftp and ping to troubleshoot daily issues. Also responsible to design, implement and maintain DNS, DHCP,IIS,ISA,NFS and FTP services.
• Creating and maintaining user accounts on NIS environment.
• SENDMAIL configuration and administration, testing the mail server
• Scheduling the Jobs using Autosys
• Preparing the servers for Oracle RAC installation by adding related rpm package, setting up firewall rules, setup asm-disk etc
• Implemented and Enhanced the Existing Scripts which are developed in BASH, Perl,python and SQL.
• Planning and scheduling with hardware vendors for faulty hardware replacement
• Installing and configuring the software packages based on project requirement
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Creating and Administrating File systems on Red Hat Linux.
• Installed/ upgraded patches, firmware and security (Kernel) patches for all HW & OS’s in installed infrastructure
• Resolved daily tickets using Remedy
• Installed and maintained IBM TivoliStorage Manager (TSM) for Backups and data storage.
• Experienced communicating with on site and off shore teams on daily basis.

ENVIRONMENT: RHEL 5.5/5.6/5.7/6.1/6.2/6.4/6.5 , AIX V6.1, Suse9/10, Centos4/5,solaris 9/10, Windows7, Oracle DB,Autosys,NFS,Samba, DNS,Bladelogic, DevOps,AWS, LAMPstack, Centrify, Apache and Web sphere on IBM servers and VMWARE virtual Infrastructure.

Confidential, Boston, MA

Sr.Unix/Linux Administrator

RESPONSIBILITIES:

• Installation, administration, configuration of RHEL 4/5,Sun Solaris 8,9,10, on sun servers & HP-Dl585 servers including package management, patch management, regular system administration tasks.
• Installed Redhat Linux on bare metal servers and virtual machines using kick start and hardening the servers.
• Participated in migrating environment from 4.x to latest 5.x version.
• Creating and cloning virtual machines in VMWARE environment using Virtual Infrastructure client 3.5 and VSphere 4.0.
• Implemented Virtualization using VMware in Linux on HP-DL585
• Configuring VDI
• Creating logical volumes, extending the filesystems using both LVM and VxVM 4.1 migrating user identities into active directory using QAS
• Perform daily maintenance routines on Linux servers, monitoring system access, managing file space and tuning the system for optimum performance.
• Provided 24x7 System Administration support for AIX 5.3/ 5.2/ 5.1 based servers and Red Hat Linux 4.x, 5.x,Cent OSservers and resolved trouble tickets on shift rotation basis
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Automation using Chef&puppet
• Worked with middleware team in resolving siuues related to Tivoli storage ( TSM).
• Administration, package installation, configuration of OEL 5.4 and preparing the servers for Oracle RAC installation and adding nodes to the cluster.
• Updated DNS configuration based on the new servers that are rolled out.
• Worked and performed data-center operations including rack mounting, cabling.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Supporting LAMPstack
• Worked on various applications and improving their performance by performance tuning and analysis.
• Responsible for change management, troubleshooting and resolution of server issues for end users support.
• SENDMAIL configuration and administration, testing the mail server
• Configuring and Administering DNS on AIX server environment
• Installing and configuring Apache and supporting them on Linux production servers.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Adding servers to the domain and monitoring them using nimsoft, cacti, sitescope.
• Assist System Administrators with various support issues.
• Writing power shell scripts for Automated Back- ups and Cron Jobs.
• Tuning kernel parameters for optimum performance.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Monitored server and application performance & tuning via various stat commands (vmstat, netstat, iostat etc) and tuned I/O, memory, etc.
• Installing, Administering and troubleshooting Windows Server 2003

ENVIRONMENT: RHEL5.1/5.2/5.3, Suse,sun solaris 8/9/10, CentOS,Windows,VMWare Oracle, SQL, QAS, EMC Centerra, Bladelogic, servicenow, LAMPstack, Apache, Websphere, Tomcat on HP ProLiant servers and EMC storage

Confidential, Richardson, TX

Sr.System Administrator

RESPONSIBILITIES:

• Supported infrastructure environment comprising SUN Solaris, HP-UX, Linux and IBM - AIX machines.
• Installed, configured and maintained Solaris 10 (Jumpstart) and Linux (KickStart).
• Experience with zones in solaris 10.
• Administered, maintained Red Hat 4.0 AS, Troubleshooting Hardware, Operating System Application & Network problems and performance issues.
• Administered, maintained windows 2003, Troubleshooting Hardware, Operating System Application & Network problems and performance issues.
• Performed tasks like Backup, Software Management including Patch updates, Documentation, User Management, Network Management etc.
• Used Simple Network Management Protocol (SNMP) to manage networking
• Setting of ZFS on solaris 10.
• User Management like SUDO access.
• Day to day maintenance of Veritas cluster Servers.
• Experience in Siebel Installation.
• Configured Disk Volume Management with LVM of HP-UX.
• Installed and removed software packages and patches on Solaris, HP UX and Linux systems.
• Performed software monitoring, installation and troubleshooting
• Performed reorganization of disk partitions, file systems, hard disk addition, memory upgrade, and DAT drive installation.
• Maintained NAS storage.
• Supporting LAMPstack
• Developed scripts for backups using Veritas, ufsdump.
• Coordinated with clients in selecting proper hardware and software according to the departmental needs.
• Installed and configured VERITAS Storage Foundation Suite, Veritas Volume Manager, Veritas cluster and Veritas file system.
• File system tuning, growing, and shrinking with VERITAS File system 3.5/4.x (Vxfs).
• Installed, maintained and troubleshooting NIS, NFS, Automounter and DNS servers
• Monitored system activities, log maintenance, and disk space management.
• Installed and configured LDAP server.
• Knowledge of Tivoli storage manager.
• Automation using Bladelogic.
• Servers’ consolidation and virtualization using VMware virtual infrastructure, VMware ESX.
• Supported all hardware diagnostics for SUN SPARC and X86 (Intel and AMD) machines systems.
• RPM (Red Hat Package Manager) packages used for Linux distributions.
• Supervise network monitoring standards, security, disaster/recovery, resource utilization and stability.
• SENDMAIL configuration and administration, testing the mail server
• Maintained Database, taking backups from remote servers.
• Used python, Perl and shell Scripting extensively.
• Actively Involved at Data Center or Work station.
• Production Support of applications mysql, Tomcat, Apache (authentication, http services)
• Maintained of RAID technologies
• Installed and Configured WebLogic 8.1, TIBCO on various Development and Production Boxes.
• Troubleshooting and maintenance of VERITAS Net Backup(4.5,5.0), Scripts for Daily backup reports, checking drivers status
• Administered, maintained Red Hat 2.1, 3.0 AS, ES, Troubleshooting Hardware, Operating System Application & Network problems and performance issues
• File system management using Logical volume management and Veritas Volume management(3.5,4.1,4.5)

ENVIRONMENT: Sun High-End Servers (12k/15k/25k), Midrange Servers (3800/4800/6800 ) Sunfire T series(T2000/T1000 and entry level Servers, storage arrays and Storage libraries,RHEL 4/5, Sun Solaris 9, 8, 7,Linux, 2.6,Unix, Veritas Volume Manager 4.1, 4.0, 3.5,Solstice disk suite 4.2.1, sun cluster 3.1, Veritas NetBackup4.5,5.0 and 6.0,LAMPstack,Apache Server,Bladelogic server, VMware ESX servers, VMware Virtual Center, GSX servers, Windows ( X86 servers )

Confidential, Kansas City, MO

Unix/Linux Administrator

RESPONSIBILITIES:

• Installed and Configured RHEL 2.1/3/4, Solaris 9 on Intel and AMD hardware
• Configured hands-free installation using Kickstart and PXE
• Participated in upgrading and migrating 2.x and 3.x to 4.x and 5.0
• Kernel upgrades and applying errata as and when required.
• Monitoring of Linux, Solaris servers using tools like vmstat, iostat, SAR, top, free etc.
• Install, Update and erase the required packages to provide services using rpm and up2date.
• Setup and configured Apache to integrate with IBM Websphere in load balancing environment
• Partitioning disks using diskdurid, fdisk with raid options and multipathing with power path on SAN devices
• Configured the scheduling of tasks using cron
• Suggesting system Upgrades, planning & implementation.
• Configuring DNS, DHCP, NIS, NFS in Sun Solaris 8/9/10 & other Network Services.
• Providing administration and troubleshooting user related problems.
• Constant Monitoring of System Performance and managed file systems.
• Coordinating with vendors to solve the hardware and software related issues.
• Implemented Security by disabling unused services and using IPtables and TCP wrappers
• Used cognos reportool
• Wrote shell and Perl scripting for automation purpose
• Joining Linux,Unix servers to Active directory using Centrify
• Creating new file system, mount file system, monitoring free space, disk usage, locating files and checking & clearing of log files.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security and Network management
• AD certificate management
• Provide responsive off-hours support in a 24 / 7 environment and ensure maximum availability of all servers and applications

ENVIRONMENT: RHEL2.1/3/4/5, Solaris, CentOS, Windows, Oracle, shell Scripting, NFS, Samba, DNS, Apache, Centrify,Websphere on HP ProLiant servers and EMC storage

Confidential

Jr. System Administrator

RESPONSIBILITIES:

• Installation and configuration of Red Hat Linux&Sun Solaris, NT servers
• Installation of patches, security fixes, e-fixes, packages on AIX, Sun Solaris and Red Hat Linux.
• Update latest patches and upgrade all applications to the latest versions.
• Configured IBM RS 6000 for production, staging and test environments.
• Scheduling jobs in Crontab, modifying them on regular basis according to requirement.
• Setup LAN consisting of ten RS-6000 Servers running AIX 4.3,5.0, 5.1, and five SolarisName Servers (E450)
• Supporting the network on connectivity issues relating to TCP/IP, IPX, and AppleTalk.
• System Administration and engineering of Active Directory
• Administration and engineering.
• Administering user accounts: Adding users, user-groups, removing users & groups and Changing user environments.
• Run bash and perl script for automation purpose.
• The primary responsibilities of the job include monitoring all the servers verify
• Everything in sync and at optimum performance and take proactive measures to reduce the downtime.
• Troubleshooting of DNS and DHCP related problems.

ENVIRONMENT: Red Hat Linux 3.0, IBM AIX 4.3.3,SUN Solaris 2.6, NT/2000, MS Operating System, DHCP, DNS, User Management, Network Management