SUMMARY

• 7 years of professional experience in System Administration with expertise in Linux (RHEL) 5/6/7, Solaris 9/10/11, HP UX 11i and Windows 2012/2008/2003 platforms.
• Extensive experience in building servers using Kickstart process in LINUX, Jumpstart in Solaris.
• Experience in RPM Package Administration for installing, upgrading, and checking dependencies.
• Experience in reconfiguring RPM database using RPM Build and creating YUM repository in Red hat Linux.
• Experience NIC bonding configuration in Linux and UNIX systems to increase the bandwidth or redundancy based on requirement by the application.
• Strong knowledge on VMware virtualization technologies (vCenter, vSphere, ESXi, Vmware vSphere .net SDK 6.0, PowerCLI6.0).
• Worked in puppet and chef for OS configuration and automation.
• Expertise in Volume management, Disk Management, software RAID solutions using Veritas Volume manager, File system Tuning and growing using Veritas File System (VxFS). planed, documented and supported high availability, data replication, business persistent, fail - over, fallback solutions using VERITAS Cluster Server, Redhat Cluster Server and HP Service Guard.
• Installation and up gradation of Packages and Patches.
• Worked on configuration management, version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in creation & maintenance of file systems, and User & Group Administration.
• Experience in configuring, optimizing and troubleshooting of Linux/Unix servers.
• Expertise in configuring bonding in Linux and (IP network Multi-Pathing) in Solaris.
• Experience in installation, configuration, performance tuning, security, backup, recovery and upgrade/patches of Linux and UNIX servers using Crontab.
• Extensive experience in evaluation, installation, initialization, parameterization, configuration, optimization, standardization and maintenance of high-speed networks for LAN, WAN, and IP Addressing schemes.
• Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570.
• Experience in creating image of Linux system with System Imager and automate Linux installs using and building Red Hat Network Satellite Server.
• Experience and implementation of services like NFS, NIS, NIS+, DNS, DHCP, LDAP, Mail servers and Samba servers, postfix, send mail, ftp, remote access, security management and Security trouble shooting skills.
• Experience in installing, configuring and maintaining application Server like Web sphere and web servers like Web Logic, Apache HTTP and Tomcat on UNIX and Linux.
• Experience in performance monitoring of Kernel parameters, Memory, Disks, Network.
• Experience in configuring and administering the Load balancing clusters.
• Experience in configuring and administrating the Firewalls and setting up the access rules.
• Excellent in installation and configuration of Patches and Packages.
• Utilized Tomcat and Apache servers for Cloud server management.
• Experience in implementing and configuring of Logical Volume Manager (LVM) for RHEL/SuSe, Solaris Volume Manager (SVM), Veritas Volume Manager (VxVM).
• Planning, implementation, replacements and recommending for required hardware for SAN/NAS (Storage Area Network) and its capacity.
• Experience in Shell/Perl scripting languages like Bourne shell, Korn shell.
• Experience on working Oracle Real Application Cluster (RAC) database, provide available database solutions and support to MS SQL Server and DB2 teams.
• Familiar with monitoring tools like vmstat, iostat, netstat, free, top.
• Experience of working in data centers & on-call environment.
• Strong verbal and written communication skills.
• A good team player with ability to lead a team by example and motivate them to achieve desired objectives. Willing to take on extra responsibilities to get work done.
• Experience supporting 24x7 production computing environments. Experience providing on-call and week end support.

TECHNICAL SKILLS

Operating Systems: RHEL 5/6/7, Sun Solaris 8/9/10/11 SUSE 10/11/12, HPUX 11.x, AIX 5/6/7, Windows 2012/2008/2003 , VMware ESX/ESXi 4.x, 5.x

Hardware: Sun Ultra Enterprise Servers (E3500, E4500, E450,E420R,E250,Sun Fire (280R/T5220/T 5140/6800/4800/3800/ v880/v480/v210/v440/280R/15K/25K), DMX3 and DMX4 Storage Arrays, F5. IBM F-series and P-series, IBM RS6000, DELL Power edge 1650, 2850, 2950, 6400. HP DL320, DL360, DL380, DL580 (G5, G6) EMC Symmetric, Sun Storage Array D1000, A5000, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers

Tools: Solstice Disk Suite, VERITAS Volume Manager, Open Migrator, Rsync, VERITAS Net backup, TSM, Cluster server, Sun Cluster, Nagios

Programming Languages: C, C++, java, JavaScript, HTML, KSH, CSH, Bash, and Perl programming.

RDBMS: Sybase, Oracle Oracle 12c/11g/10g/9i, MySQL

Networks: NIS, NFS & DNS and Firewalls

Protocols: TCP/IP, FTP, SSH, SFTP, SCP, SSL, ARP, DHCP, TFTP, RARP, PPP and POP3

Storages: Sun StorageTek Arrays, Hitachi, EMC CLARiiON

PROFESSIONAL EXPERIENCE

Confidential - Reno, NV

Sr Unix/Linux Systems Administrator

Responsibilities:

• Installation, configuration, administration of RHEL 5, 6, 7 & Solaris 9, 10, 11 using Kickstart, Jumpstart, custom configuration like package management, volume management of servers.
• Administration of RHEL 6.x, 7.x which 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, Xen servers.
• Installing RedHat Linux using cobbler and applying security polices for hardening the server based on the company policies.
• Installed and configured Puppet Master / Agent configurations and Master-less Puppet configuration for high scalability
• Sharing the source file from puppet master to all puppet nodes through puppet fileserver
• Deploy and monitor scalable infrastructure on Amazon web service (AWS)& configuration management using Puppet.
• Installed, manually configured Sun machines through jumpstart installation on Sun Fire and Enterprise servers. Installed, configured Zones, LDOMs in Sun Solaris 10.
• Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIM Power 4, Power 5 systems and Upgraded Maintenance level as well.
• Developed readable and simple curriculum for the average user to get started with Python.
• Installed and verified that all AIX/Linux patches or updates are applied to the servers.
• Installing, administering Redhat using Xen, KVM based hypervisors.
• Installing and managing different automation and monitoring tools on Redhat linux like Nagios
• RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Worked and performed data-center operations including rack mounting, cabling.
• Tech and non-tech refresh of Linux servers, which includes new hardware, OS, upgrade, application installation, testing.
• Programmed and prepared code for interfacing with Apache Tomcat systems.
• Coordinated with technical staff for integration and resolution of web issues.
• Installing, integrating and troubleshooting Apache, Tomcat, WebSphere and WebLogic application server.
• Installed, configured and maintained WebLogic10.x and Oracle11g on Solaris & Redhat Linux.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Gathering requirements from customers and business partners and design, implement and provide solutions in building the environment.
• Installed, configured and maintained all platforms and web services.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation, which includes tuning the kernel, agent installation, adding NAS storage.
• Used Python programming and language to develop a working and efficient network within the company.
• Designing Firewall rules for new servers to enable communication with application, Oracle 11g servers.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465CG5 blade centers).
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Coordinated performance testing of Apache and Tomcat management services.
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
• Supporting 24x7 production computing environments and providing on-call and weekend support.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 8,9,10,11 AIX 5.3, 6.1, SAN(Netapp), Blade Logic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential - Troy, MI

Linux System Administrator

Responsibilities:

• Installation, configuration & upgrade of Solaris 8/9/10, Linux AS 5/6, HP-UX 11i, IBM AIX operating systems
• Configuring Solaris, HP-UX and Redhat Linux Servers with Jumpstart, Ignite and kick start
• Configured and troubleshooting of NFS, NIS, NIS+, DNS, DHCP, FTP, LDAP, Samba, Apache servers in Solaris and Linux Servers
• Worked as a senior Unix admin in a team responsible for maintaining about 200 servers of HPUX/IBM/SUN servers on a day-to-day basis.
• Worked on installation and configuration and disk and file system management using Veritas Volume Manager (VxVM), Veritas Cluster Server (VCS), Solstice Disk Suite in Solaris Servers and Logical Volume Manager (LVM), HP Service Guard in HP-UX and Linux Servers
• Performed setup and configured high-end Sun enterprise Servers like E15ks, E20ks, M5000s, M8000s, T2000's, T5120's and T5140's
• Performed memory and swap management to improve optimization and performance of the servers
• Experienced with working in Solaris Volume Manager (SVM), creating and maintaining metadata base. Creating Metadevices, concatenation/striping, soft partitions, mirroring the devices, creating hot spares. Allocated space to Meta devices depends on requirement, detaching and clearing meta device not in use.
• Expert in automation using .Net C#, PowerShell and VMware Power CLI .
• Experienced SANManagement for Sun Solaris/HPUX/AIX/Windows operating systems.
• Created and managed Zettabyte file system (ZFS) in Solaris 10, HP-UX and Linux Servers. Created zpools. Exported ZFS from local zones to global zones
• Experienced in User and Group administration and security issues
• Performed upgrades of packages and patches in Solaris, HP-UX and Linux
• Worked on automated installations of Linux Servers using System Imager tool
• Implemented Virtual Servers in Solaris by using Solaris Zones/Containers, in HP-UX using npars and vpars features, in IBM AIX using AIX VIO/LPAR/WPAR, Installed OS on Virtual Servers
• Backup management and recovery policy using Veritas Net Backup (VNB)
• Installed, configured and managed Oracle Real Application Cluster (RAC) and Oracle Data Guard on Solaris, HP-UX and Linux Servers
• Creation and scheduling Cron Jobs for backup, system monitoring and removal of unnecessary files
• Providing day-to-day user administration like adding/deleting users and managing user queries
• Planned and implemented migrations from one environment to another environment in OS level and Hardware level in Solaris and HP-UX servers
• Expertise on live upgrades in Solaris and HP-UX servers. Worked on migration from UFS root file system to ZFS root file system
• Worked on installation, configuration and manage Redhat Cluster Suite in Linux Servers
• Installed, configured and managed Global File System (GFS) in Linux Servers, creating and managing Cluster suite using GFS
• Performed enable/disable the processes depending on the requirement and minimize the load average of the server using Service Management Facility (SMF) in Solaris 10
• Performed installation, configuration, upgrades, package administration and support for Linux systems on client side using Redhat satellite Network server
• Performed RPM Package Administration using RPM build
• Regular disk management like adding and replacing hard drives in existing servers and workstations. Creating partitions according to requirements, creating new file system or growing existing one over the hard drives and managing the file system
• Worked on VMware. Installed and monitored with various virtual environments with ESX 3.x and Virtual Center 2.X
• Performed configuration of Network Multipathing in Solaris and Linux

Environment: Solaris 8/9/10, Redhat Linux 4/5, HP-UX 11i, AIX, VMware ESX, Sun Fire 440R Server, Sun Fire V880/890, Sun Enterprise T series servers, SPARC Server 1000, HP 9000 K, L, N-class Server, IBM P series Servers, Veritas Net Backup 6.x, Veritas Volume Manager 5.x

Confidential

Unix/Linux Administrator

Responsibilities:

• Installation, configuration and upgrade of Red Hat Linux 4/5
• Patches and package management on Linux servers
• Involved in setting up Kick-start server for network installation in Linux Environment
• Worked on installation, configuration and support for RedHat Satellite Server
• Working with RedHat Satellite Server for upgrading and patching Linux Servers
• Involved in creating new volumes using Logical Volume Manager (LVM)
• Experience in VMware. Installed and monitored virtual environments with ESX 3.x/4 servers and VMware vSphere 4.1
• Monitoring system performance and do kernel tuning to enhance the system performance
• Implemented and enhanced UNIX shell scripts using Korn, Bash and Perl scripting
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Configuration and troubleshooting of NFS & NIS. Updating NIS maps and DNS entries
• User management includes user addition, deletion and modifying the user attributes
• Creation of backup policies, scheduling and monitoring the backups using VERITAS NetBackup
• Setting up a RedHat cluster with RedHat Enterprise Linux and RedHat clustering
• Building Oracle RAC on RedHat Enterprise Linux 5
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Experience in Working on AIX LVM
• Installing operating systems, patches, hardware, vendor software packages, system customization and documentation
• Implementing Apache Tomcat on Linux
• Configuring 2 node and 4 node cluster on Linux servers
• Implemented SUDO, Secure Shell (SSH) and other security tools
• Configured bonding on server Ethernet ports and configured the storage according to requirement
• Configured Hardware and Software RAID’s in Red Hat Linux environment for system disk
• Configured ILO & RSA, DRAC
• Finding EMC and Netapp SAN disks and configure the multipath on Linux servers
• Configuring YUM repository to update or install the package
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases
• Assembling the systems and installing operating system and application software

Environment: Solaris 9/10/11, Redhat Linux 4/5/6, HP-UX 11i, AIX, Sun Enterprise Servers, Sun Fire, Sun T Series, Sun M Series, HP 9000K, L, N class Server, HP & Dell blade servers, IBM RS/6000, p Series servers, VMware ESXi Server, Oracle

Confidential

Systems Administrator

Responsibilities:

• Working on build’s and responsible for installation and configuration of Linux Servers using kickstart.
• Installation and administration of VCS and Cluster.
• VxVM and VCS installation & management on Linux OS.
• Patch OS updates on VCS nodes.
• Disk Management, LVM and VxFS File System Administration.
• Installation and manage VMs on ESXi servers.
• Deployed and configured, Windows 2000/ 2003 Servers, with DHCP, DNS, IIS, Active
• Directory Domain Controllers, Group Policy, Internet, TCP/IP, and routing concept.
• Installation and maintenance of Operating System and regular upgrade.
• Patch updates on servers on planned basis and firmware up gradation.
• Maintenance (SW/HW service and upgrades), Server Performance.
• Problem Diagnosis, Resolution, & Management.
• Involve in calls with customer and support teams to discuss on the Problem and change management.
• An effective communicator with team management.
• Providing 24*7 supports to clients on Linux and UNIX servers.
• Handling Configuration, Change Management, and Trouble Management & Fault analysis of nodes.
• Managing file systems like NFS, EXT etc.
• Working with Logical Volume Management (LVM).
• Setting kernel parameter to improve server performance.
• Red Hat Pack; YUM client/ server configuration (through RPMs & ISO images).
• Manage Log Files - Syslog (Linux) management with Logrotate utility.
• Setting cron jobs for daily maintenance of servers.
• Using HP ILO for doing maintains of servers from remote location.
• Extensive experience in setup, configuration, upgrade, maintenance and troubleshooting on different OS platforms like RHEL 5x and hardware.
• Administration and maintenance of application services and network infrastructure technologies like FTP, NFS, SSH.
• Installation and configuring Volume management, Disk Management on Servers.
• Patch Management using Red hat satellite server. Keep up-to-date patches.
• Working on NFS and VSFTPD servers.
• Working on Cluster issues like fail over and fail back of service groups, creation of service group and add correspondence resources into the group, setting proper dependency, freezing of service groups during activity.
• Creating veritas volumes and filesystems and extend of vxfs filesystem.
• Working on remedy tickets and change requests.
• Prepared SOP for Linux activities.
• Will Work with vendor support like HP to replace the faulty hardware.
• Provide root cause of issues by checking system logs, veritas logs and work with Redhat and HP to fix the issue.