SUMMARY

• Proficient in Networking and configuring TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP.
• 8+ years of Strong Experience in LINUX/UNIX Administration, Shell Scripting with expertise in Red Hat Enterprise Linux 4, 5 and 6, Solaris 9 and10 and Windows 2003 and familiar with IBM AIX 6.
• Expertise in Installation, Configuration, Integration, Tuning, Backup, Crash recovery, Upgrades, Patching, Monitoring System Performance, System and Network Security and Troubleshooting of Linux/Unix Servers.
• Experience in implementing and monitoring High Availability environment using Red Hat Cluster, Veritas Cluster Server, Sun Cluster and Oracle RAC.
• Configured and used Kickstart, Jumpstart and NIM to install OS.
• Worked on KVM of Red Hat Enterprise Linux 4,5 and 6 and Solaris 10 Container Technology.
• Configured and maintained VMware.
• Used Red Hat Network (RHN) Classic and Red Hat Network Satellite for operating system upgrade or maintenance.
• Solaris Live Update Technology associated with an operating system upgrade or maintenance.
• Strong experience in VERITAS Clusters in supporting high availability mission critical servers.
• Experienced with the installation, configuration and volume/File system management using Veritas Volume Manager (VxVM), Logical Volume Manager (LVM) and Solstice Disk Suite (Solaris Volume Manager).
• Backup management and recovery policies using VERITAS Net - Backup.
• Experience in creating physical volume, logical volume, volume groups using LVM’s in Red Hat Enterprise Linux, GFS(global file system) and ZFS in Solaris.
• Experience in VMware. Installed and monitored Virtual environments with ESX 4.x servers and Vsphere.
• Good knowledge on various cloud computing products such as Amazon (EC2), OpenStack.
• Experienced in working with Storage Area Network (SAN), EMC CLARiiON CX, EMC Symmetrix DMX, EMC MirrorView, Hitachi data storage.
• Expert in Installation, configuration of Patches and Packages.
• Solid understanding of RPM, building, maintaining, and installing packages.
• Experience in installation, configuration and administration of WebLogic and Web sphere Servers.
• Proficient in Installation, Configuration, Support & Maintenance of various Red Hat 6 and Sun SPARC Enterprise hardware Servers located Confidential Remote Locations. Deployment of Application Software ( E-Com/J2EE, B2B, B2C, Oracle SQL Server, ERP(SAP, Oracle Apps, People soft)
• Experience in providing day-to-day user administration like adding and deleting users and managing users queries.
• Strong in troubleshooting, monitoring, training and 24/7 production support in mission critical environments Worked with systems support team to define, architect and maintain highly available production systems.

TECHNICAL SKILLS

Hardware: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series), Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Confidential Power edge 1300/1500 server, IBM Xseries, Blade server, Oracle RAC.O / S Red Hat Linux (RHEL) 4/5/6, Solaris 9/10, IBM AIX 5.3, Windows NT /2003/vistaFedora 16/17/18, SUSE 10.x

Naming Services: DNS, NIS, and NIS+

Backup Management: Veritas Netbackup 4.x/5.x/6.x, ufsdump, ufsrestore, tar, dd, cpio

Script Languages: Shell scripts, PERL

Web Technologies: Apache 2.x/3.x, IPLANET 4.x/5.x, WEBLOGIC 8, Websphere 4.0/5.0

Storage: SAN, EMC Symmetrix / Clarion, iSCSI, SNAP, NAS, DAS

Third-party Software: VERITAS Volume Manager, LVM, LDAP

Cluster: Red Hat Cluster, Veritas Cluster Server (VCS), Sun Cluster, AIX HACMP

RDBMS: Oracle, MS SQL Server

Protocols: NetBIOS, NetBUI, SMTP, SNMP, ICMP, TCP/IP, FTP, TELNET,SSH, UDP & RIP, DNS, WINS, DHCP.

Antivirus: Symantec Antivirus Corporate Edition, Trend Micro Messaging Suite for Exchange, MacAfee Virus Scan Engine 7.1 / 8i, AVG (Grisoft)

Remote Access Tools: Terminal Services, Net Meeting, Web - Ex, PC Anywhere and VNC for Windows Servers

PROFESSIONAL EXPERIENCE

Confidential, Chicago, IL

Sr Unix Administrator

Responsibilities:

• Created Ext4 file system in Red Hat Enterprise Linux and Zeta byte file system (ZFS) in Solaris 10.
• Installation, Maintenance, Administration and troubleshooting of Red Hat Enterprise Linux 5/6 and Solaris 9/10 systems.
• Performed automated installations of Operating System using kickstart for Red Hat Enterprise Linux 5/6 and Jumpstart for Solaris 9/10 Linux.
• As a Red Hat administrator primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, installing & configuring, job scheduling.
• Installation, configuration of Oracle RAC for multiple computers to use single database.
• Supported Oracle RAC, ASM, adding ASM disks, configuration.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Installation and configuration of Veritas Storage Foundation Suite: Veritas Volume Manager, Veritas File System, Veritas Cluster Server.
• Installed Red Hat Enterprise Linux 5/6 and Solaris 10 Operating System on servers and Blades over the network.
• Used Puppet tool for managing system configurations, adding profiles, manifests, modules.
• Installed and maintained OpenStack on KVM for cloud based applications.
• Hands on experience on various cloud computing products such as Openstack.
• Built virtualized Linux servers on ESXi, Vsphere and Blade servers to host multiple applications on same chassis across different server hosts.
• Set up Red Hat Linux servers for iSCSI LUN boot instead of using local hard disks.
• Set up Sun servers for SAN-through-FCP boot as against booting from internal hard disks.
• Configured Sun servers M4000 and M5000 for operational readiness upon OS installation.
• Set up Linux servers for LAMP implementations and readiness.
• Created File systems from local storage as well as NFS partitions for application portability.
• Created zpools. Exported ZFS from local zones to local zones.
• Installing, administering Red Hat using Xen, KVM based hypervisors.
• Worked and performed data-center operations including rack mounting, cabling.
• Installed, configured, and maintained WebLogic 12.x and Oracle 11i on Solaris and Red Hat Linux.
• Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
• Installing and configuring Apache and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostat etc) and tuned I/O, memory, etc.
• Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL 465C G5 blade centers).
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.

Environment: Red Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485, ML Series), Solaris 9,10, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential, Indianapolis, IN

Linux/Unix Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0, Solaris 9/10 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Red Hat Satellite server.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Installation, configuration and administration of VMware, Solaris Zones, Containers and Ldoms.
• Hands on experience on cloud computing product Amazon Web Services EC2.
• Used Jenkins for continuous integration and automation.
• Used Puppet tool for managing system configurations.
• Built virtualized Linux servers using vCenter, vSphere suite on ESXi 4.0.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume management on Suse servers using YaST.
• Applied appropriate support packages/patches to maintain system integrity.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Monitored system activities and fine tuned system parameters and configurations to optimize performance and ensure security of systems.
• Adding servers to domain and managing the groups and user in Active Directory, installing and configuring sendmail.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
• Worked with project manager and auditing teams to implement PCI compliance.
• Installed and configured Virtual I/O Server V1.3.01 with fixpack8.1.
• Integrating Weblogic 10.x and Apache 2.x and deploying EAR, WAR files in Weblogic Application servers.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Working on Volume management, Disk Management, software RAID solutions using Logical Volume Manager and VERITAS Volume manager.
• File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Fine tuning of Servers and configuring networks for optimum performance.
• Organized various meetings with teams as mentioned above for tracking their requirements as inputs to get this done and designed the plan/steps involved and took user approvals.
• Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.
• Installation, maintenance and administration of Oracle and Db2 Server on Sun Servers.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• As a member of the team, monitored the VERITAS Cluster Server 4.1 in SAN Environment.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Created new groups and tested first in development, QA Boxes and then implemented the same in production Boxes.

Environment: Red Hat Linux Enterprise Linux 4/5 4, Solaris 9,10, Sun E10k, E25K, E4500, SunFire V440/880, DMX 3 & DMX4, Siteminder, SonicMQ 7.0, VxFS 4.1, VxVM 4.1.

Confidential, Dallas, TX

Systems Administrator

Responsibilities:

• Involved in installation and configuring Solaris 9/10 using Jump start server and Red Hat Enterprise Linux 4/5 servers using Kickstart server as required for the project.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Incident management for Unix Servers (Solaris, Linux).
• Installed and configured Solaris 10 servers with Zones and containers with Sun ZFS.
• Installing, administering Red Hat using Xen, KVM based hypervisors.
• Installation, configuration of Oracle RAC for multiple computers to use single database.
• Supported Oracle 10g RAC.
• Custom build of Windows 2003 and Windows 2008 servers which includes adding users, SAN, network configuration, installing application related packages, managing services.
• Primary responsibility includes building and supporting Red Hat Enterprise Linux 4,5 servers.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
• Implemented SUDO, SSH and other security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Assisted in configuring the application servers with other components such as database, web servers, LDAP directory, Active Directory, BEA Web logic etc.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Created Zeta byte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Installation and configuration Veritas NetBackup on Sun Severs and performing Backup using Veritas Net Backup.
• Extensive use of Bash shell for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Regular disk management like adding /replacing hot swap able drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux boxes as a part of proactive maintenance.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Solaris 9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers, SAN Switches, Apache, Tomcat servers, WebSphere application server.

Confidential, Dallas TX

Systems Administrator

Responsibilities:

• Installation and configuring of SUN Solaris and Linux servers.
• Involved in Building and configuring Solaris 8/9/10 using Jump start server and Red Hat Linux Servers using KickStart server as required for the project. Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Incident management for Unix Servers (Solaris, Linux).
• Installed and configured Solaris 10 servers with Zones and containers with Sun ZFS.
• Primary responsibility includes building and supporting Solaris/ Redhat Linux 3,4 servers.
• Monitoring CPU, memory, iSCSI disks, disk controllers, physical disk, HW and SW RAID, multipath, file systems, network using the tools NAGIOS and BMC Tools.
• Extensive experience in installing, integrating, tuning and troubleshooting Apache, Tomcat, WebSphere and Weblogic application server.
• Implemented SUDO, SSH and other security tools and implemented SOX (Sarbanes Oxley) security compliance.
• Extensive use of Veritas Volume Manager for Disk management, file system management on Sun Solaris environment.
• Created Zetabyte file system (ZFS) in Solaris 10. Created zpools. Exported ZFS from local zones to local zones.
• Installation and configuration Veritas NetBackup on Sun Severs and performing Backup using Veritas Net Backup.
• Extensive use of Korn shell, Bash for scripting.
• Expertise in Linux backup/restore with tar including disk partitioning and formatting.
• Involved in Planning, building and Administration of various High Availability clusters and heart beat checking on Sun Solaris using VCS in heterogeneous SAN environment.
• Regular disk management like adding / replacing hot swappable drives on existing servers/workstations, partitioning according to requirements, creating new file systems or growing existing one over the hard drives and managing file systems.
• Planned, scheduled and Implemented OS patches on both Solaris & Linux boxes as a part of proactive maintenance.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.
• Involved in migration of projects from one flavor to another one.
• Involved in development, user acceptance, and performance testing, production & disaster recovery server.

Environment: Solaris 8/9/10, Red Hat Linux 4/5, BMC Tools, NAGIOS, Veritas NetBackup, Korn Shell, Bash Scripting, Veritas Volume Manager, web servers, LDAP directory, Active Directory, BEA Web logic servers,SAN Switches, Apache, Tomcat WebSphere, Weblogic application server.

Confidential

UNIX Administrator

Responsibilities:

• Installed RHEL 3.0/4.0 using kickstart and custom building the servers.
• Installed/configured EMC Storage with 0, 1& 5 RAID configurations.
• Installed and maintained Security issues.
• Installed Veritas Volume Manager, VCS Cluster Server for fail-over and for mirroring and raid level configurations on EMC storage frames.
• Performed all System Administration tasks like cron jobs, installing packages, and patches.
• Configured Mail relaying, virtual host, POP3 and IMAP4 services and enforced security policies.
• Configured and installed Automount and Jumpstart.
• Diagnosing hardware/software problems and provide solutions.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and Auto Fs File systems.
• Troubleshooting system, network and user issues.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Supported back office systems environments.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Creation & Maintenance of user accounts & passwords & profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
• Additional responsibilities include schedule and administration of server backups, setup and administration of network and ms mail accounts.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Maintaining production critical servers running Solaris UNIX, Linux supporting Oracle database and Web services. Providing 24x7 supports.
• Worked efficiently using Veritas NetBackup on development and production servers for backups and restores.
• Created LVMs on Linux servers.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks.

Environment: HP Proliant servers, SUN Servers (6500, 4500, 420, Ultra 2 Servers), Solaris 7/8, Veritas NetBackup, Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.