SUMMARY

• 7 years of IT industry experience in System Administration on Red Hat Linux, IBM AIX, Sun Solaris, SUSE Linux, Web logic Server Environments.
• Expertise in Installation, Configuration and administration of Red hat Linux 4x, 5x,6x Solaris 7, 8, 9, 10, IBM AIX 5.x.6.x,7.1
• Expertise in Installation, Configuration, Implementation, Up gradation, Maintenance & Troubleshooting of Web Logic V5.1,6.1,7.0,8.x/9.x/10.x and good experience in clustering Web Logic servers Installs, Upgrades, Patches, Configuration, Performance tuning on UNIX and system software & hardware.
• Extensive experience in Installation, Configuration and Troubleshooting of various web server issues including Netscape Enterprise Server 4.0, IBM http server, Apache Web Server 2.x/1.x, Tomcat 5.x/4.x/3.x.
• Red Hat Linux - based Virtualization implementations such as VM Ware and Xen
• Experienced in supporting database systems including Oracle, MySQL, PostgreSQL on Red Hat Linux/Unix.
• Extensive experience in Installation, Configuration and Troubleshooting of various web server issues including Netscape Enterprise Server 4.0, IBM http server, Apache Web Server 2.x/1.x, Tomcat 5.x/4.x/3.x.
• Was involved in creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Configuring and Administering NFS, DNS, NIS, NIS+ and LDAP on Sun Solaris server environment
• Experience in setting up a PXE boot environment with SuSE, and Red Hat Linux.
• Expertise in Veritas Volume manager (VxVM), creating new file systems, mounting file systems and un mounting file systems
• Server Consolidation and Migration of Applications on Oracle and Java Applications.
• Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using Veritas Cluster Server 3.x/4.x, Sun Cluster Server in SAN environment.
• Expertise in implementation and maintenance of DHCP, NFS, NIS, DNS and Apache SMTP.
• Configuring and Monitoring using NAGIOS, NAGVIS, NDOUTLS, ZENOSS, and MRTG.
• Efficiency in installing, configuring and implementing the RAID technologies using Veritas Volume manager and Solaris Volume manager.
• Experience in using Veritas Net Backup, Proficient in system backup and recovery from tapes using ufsdump, ufsrestore, tar and cpio, file system administration.
• Configured Network Concepts DNS, NIS and DHCP, troubleshooting network problems such as TCP/IP, providing support for users in solving their problems.
• Worked on Networking and communication devices, Server Utilities, TCP/IP, FTP.
• Expert in data center operations including hardware, software setup monitoring, troubleshooting on a 24 x7 basis with BMC patrol, Team Quest, Unicenter & Smart trouble ticketing Systems/remedy tickets/kintana tickets etc.
• Installation of web logic, upgraded to service pack updates, installed BEA Patches, configuring and creation of new domains, start and stop web logic Server.
• Used open source tools like Syslog-ng for logging security.
• Performing troubleshooting production issues, root cause analysis and preventive actions.
• Excellent problem resolution and communication skills with ability to work under pressure in a highly visible role.

TECHNICAL SKILLS

Web Severs: Apache 2.x/1.x, IBM Http Server, Tomcat 5.x/4.x/3.x.

Operating Systems: Red Hat Linux 4.x/5.x/6.1,IBM AIX5.x, 6.x,7.1, Sun Solaris 8, 9, 10 SUSE Linux 9, 10.

Web/Application Servers: Web Logic 7.0/8.1/9.x/10.x, JBOSS, Tomcat, Web sphere 5.x/6.x, HTML, JavaScript, XML, EJB, Servlets

Software: Veritas File System, Veritas Volume Manager, Solistice Disk Suite 4.x., Veritas Net Backup, Samba, Tivoli(TSM).

Tape Hardware: Storage tek tape libraries L40, L80, L180, L700.Sl500, Sl850, DAT&DLT, STK 9940B, LTOs.

Hardware: IBM F-Series & P-Series, IBM RS6000, Sun Storage Array D1000, A5000Series, Workstations 700 series, Dell Power Edge 1300/1500/6650/2650/2950 Servers.

Scripting Languages: Born, Bash, KSH, Perl

Networking: TCP/IP, NIS, NFS, DHCP, DNS,WAN, SMTP, Cisco Routers/Switches, TELNET, FTP/TFTP, SNMP,LDAP

PROFESSIONAL EXPERIENCE

Confidential, PALO ALTO, CA

Linux System Administrator

Responsibilities:

• Worked on variety of linux platforms Red Hat Linux, Centos.
• Ubuntu, Oracle Entriprise Linux (OEL), SUSE which includes installation, configuring and maintenance of applications on these environment
• Worked exclusively on Confidential virtual environment ESX, ESXi, vCenter, vSphere and Vcloud environments.
• Performed activities on Virtual Machines (VM ) like Vmotion, VMtools intsallation, VM version upgrade and Storage migration of various VM's across ESXi clusters.
• Deployed, configured and supported VMs with applications like JDK, Apache, MYSQL on Linux platforms.
• Deployed and configured 3rd party software using OVF template on ESXi environments.
• Maintenance and troubleshooting DNS, Proxy and LDAP related issues on many servers.
• Configured and maintained Sendmail and Postfix mail servers on various linux platforms which are used as mail relay servers
• Performed system-monitoring, reported systems usage and performance and troubles hooted to make sure the systems are up and running.
• Performed troubleshooting of CPU bottle necks, Memory bottle necks and gave suggestions on performance improvements.
• Day to day resolution on linux based issued though Helpzilla ticketing system in compliance to SLA cycles.
• Extensive hands-on experience working on Apache and Tomcat Web services which are behind VIP’s in F5 Load Balancing model.
• Worked exclusively in tweaking Redirect rules as per needed for Apache and Tomcat Web services.
• Configured, troubleshooting and worked with BigIp F5 Load Balancers.
• Automating many day to day tasks through Bash scripting.
• Worked exclusively in automating and deploying many applications using Puppet Server.
• Involved in configuring various application scripts as startup scripts during boot process.
• Installed, Configured and working with Splunk software which gives the system log information in timely manner which helps us determine the health of system.
• Configured and maintenance of Avamar backup software which helps to backup system information in timely manner.
• Worked exclusively in setting up and configuring Oracle RAC 10g/11g environment.
• Worked closely with DBA in order to adjust kernel parameters as per requirments.
• Had worked exclusively Boot from SAN environment.
• Involved in configuration of oracle ASM disks for the oracle RAC servers on both physical and in virtual environment.
• Involved in NAS data domain replication of various database servers from PROD to STAGE, UAT, TEST environments.
• Involved in migration of data from Vmax to Vplex virtual environment.
• Had been involved in war room support in resolving the issues on the fly.

Environment: - Red Hat Enterprise Linux 4.x/5.x/6.1, CentOS 4,5,Ubuntu, SUSE Linux 9/10Oracle Entriprise Linux (OEL),Vcenter,Vsphere Client Confidential ESX Server 5.1, Confidential hardware version 8, Confidential tools, Apache 2.0,JDK,MYSQL, Logical Volume Manger for Linux, Oracle RAC 10g/11g,Oracle ASM disks, Splunk, Avamar Backup software, Vmax, Vplex, BigIp F5 Load Balancers .

Confidential, IRVING, TX

System Administrator

Responsibilities:

• Performed installation, configuration and maintenance of Red Hat Linux 4.x, 5.x,6.1
• Kick started and build various Red Hat Linux servers using Kick start profiler and Tivoli Provisional Manager ( TPM )
• Kick started lot of RHEL 6.1 servers on regular basis in order to test lot of Global Security Framework ( GSF ) packages which are unique to Confidential by various engineers
• Kick started and build lot of zLinux boxes for functionality testing of GSF packages on s390x platforms
• Used to test functionality of various RFT by having various SSH Tectia, ILO, DRAC . Sessions.
• Installed and configured VIO server on IBM AIX 5.3 based P-Series 570/ 550 servers.
• Worked extensively on LPARS/ DLPARS for functionality testing of AIX packages.
• Registered lot of RHEL and zLinux boxes to Enterprise Security Management (ESM) Backend servers in order to get BCM/CFM reports of the RHEL and zLinux servers
• Registered various RHEL and zLinux boxes to ITM Tivoli Monitoring agents for sanity check of the boxes.
• There is crontab activity which runs regularly, which reports various RHEL and zLinux servers to backend server called ConfigDB which looks for any possible VTMs ( Vulnerable Threat Management).
• Worked and edited few Bash and Shell Scripts when required to register RHEL servers to backend servers.
• Performed daily backups, restoration of data as per requests from developers using Veritas Netbackup.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux and AIX.
• Performed system-monitoring with the help of tools like TOPAS, SAR, VMSTAT, IOSTAT to report systems usage and performance
• Performed Red Hat Linux kernel, memory upgrades and undertook Red hat Linux Kick start installations
• Installing and configuring MQ 5.3/6.0 on different environments
• Creation of LVM’s on SAN using Red Hat Linux utilities.
• Installed and configured various SAN drivers like firmware,lpfc drivers,HBA multipaths,ECC power paths, allocating various LUNS and checked the functionality of SAN connectivity on various RHEL boxes.
• Installed and configured VCS-SFSCHA (Veritas Clustering File System) between various RHEL 6.1 boxes. Created a common disk storage between the Veritas clustered boxes using Vxdiskadm and checked various fail over scenarios to make sure the functionality of Veritas cluster .
• 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 Confidential RFT and used to work with various Confidential engineers.
• Recently worked on setting up Veritas Cluster between two VM’s of different Vcenters with common SAN stack attached.
• Used to co-ordinate and follow up with engineers by sharing IM sessions to make sure things in order.

Environment: Red Hat Enterprise Linux 4.x/5.x/6.1, AIX 6.x, 7.1, SUSELinux 9/10, Tivoli Storage Manager, Logical Volume Manger for Linux and Confidential ESX Server 4.x, Veritas Netbackup, Apache 2.0, Veritas Cluster,Websphere, HMC, ILO, DRAC, IBM P570, P590, P595, Dell 2400, 2450, 2850, 2950.HP Proliant Servers.

Confidential, OAKS, PA

System Administrator

Responsibilities:

• Performed installation, configuration and maintenance of Red Hat Linux 4.x, 5.x.
• Provided 24x7 System Administration support for AIX 5.3/ 5.2/ 5.1 based servers and Red Hat Linux 4.x, 5.x servers and resolved trouble tickets on shift rotation basis.
• Handling HP and DELL servers running on Red Hat Linux and SUSE Linux 9/10.
• Installed, configured and maintained VIO server on IBM AIX 5.3 based P-Series 570/ 550 servers.
• Worked extensively on planning and configuration of LPARS/ DLPARS.
• Performed planning and implementation and management of NIM Master server & NIM clients.
• Wrote bash script for getting information about various Red Hat Linux servers.
• Maintaining CPU, Memory resources on Micro partition VIO Server’s and Client’s environments.
• Worked on EMC disk storage to allocate disk space.
• Planned, installed, configured and maintained HACMP 5.3 clusters on IBM Squadron/RS/6000 P-series servers.
• Responsible for taking system backups using mksysb, mkcd, savevg. Also performed system backups through NIM and created archives of various software.
• Creation of LVM’s on SAN using Red Hat Linux utilities.
• Configuring and Administering DNS and LDAP on AIX server environment
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network).
• Experience in Servers consolidation and virtualization using Confidential virtual infrastructure, Confidential ESX
• Installed and maintained IBM Tivoli Storage Manager (TSM) for Backups and data storage.
• Configured GPFS (General Parallel File System) to allow multiple systems and application to share common pool of storage.
• Good understanding of web services software architectural and design issues.
• Experience with Ecommerce web site administration and platforms such as IBM Websphere Commerce, and Tomcat.
• Monitored overall system performance, performed user management, system updates and disk & storage management.
• Had used Plate spin software for data center moves.
• Installed, configured and monitored server by BMC Patrol, NMON & PTX.
• Performed daily backups, restoration of data as per requests from developers using Veritas Netbackup.
• Performed Red Hat Linux kernel, memory upgrades and undertook Red hat Linux Kickstart installations.
• Created users, manage user permissions, maintain User & File System quota on Red Hat Linux and AIX.
• Performed troubleshooting, tuning, security, backup, recovery and upgrades of IBM AIX 5.3/5.2/5.1/4.3 , HACMP 5.3/5.2/5.1/4.5 and Red Hat Linux 4.0/3.0/9.0 based systems.
• Production support of Apache and JBoss including installation, configuration, management and troubleshooting
• Setup of full networking services and protocols on UNIX, including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, and print servers to insure optimal networking, application, and printing functionality.
• Installed and configured Sudo for users to access the root privileges
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements. Analyzed performance issues through PERFPMR.

Environment: AIX 5.1/5.2/5.3, Red Hat Enterprise Linux 4.x/5.x, SUSELinux 9/10, Tivoli storage Manager, Oracle 9i, Logical Volume Manger for Linux and Confidential ESX Server 2.x, Samba 3.0, Veritas Netbackup, Apache 2.0, HACMP, HMC, ILO, RAID, Weblogic, IBM P570, P590, P595, Dell 2400, 2450, 2850, 2950.Hitachi disk Arrays

Confidential, Carrollton, TX

System/Linux Administrator

Responsibilities:

• Worked with IBM AIX 5.1 under P Series and RS6000 system environment.
• IBM AIX 5.1 System installation and configuration, problem determination, solutions design and implementation, Maintenance, Performance tuning, disk mirroring using LVM, backup, disaster recovery, trouble shooting and user management.
• Worked on Red Hat Linux ES3.0, & Red Hat Linux Enterprise Server 9.0.
• Built AIX OS Complete, Migration and Preservation installation for the P Series & RS 6000 servers
• Monitored the AIX system Error reports and Log files and if needed trouble shoot the AIX system in order to maintain efficient operations.
• Converted some of the AIX servers from version 4.3.3 to 5.1.
• Worked as Red Hat Linux/Unix System Administrator for UNIX Engineering Group. Handling 150 servers
• Worked with middleware team in resolving siuues related to Tivoli storage ( TSM).
• Day to Day activities included handling Security issues like stale UNIX account Cleanups, 90 day password changes, setting max age and min age, creating a list of umask permission for various users.
• Wrote Bash scripts to automate day to day activities,
• Used command line and advanced commands options in Red Hat Linux. The work also included updating patches in all the Linux servers and doing Performance Tuning.
• Also used various tools to monitor the server’s health in a production environment.
• Used various AIX commands locking of invalid users using Smit in AIX. Worked on Confidential ESX Server on Intel Linux Servers.
• Configure HACMP for a clustering environment on AIX servers.
• Performing O/S upgrades and Maintenance level upgrades.
• Use ILO/HMC for remote access of servers on Linux and AIX respectively.
• Troubleshoot hardware, software and Operating system and network related errors on Red Hat Linux and AIX.
• Install multipathing software such as EMC powerpath, HDLM.
• Configuring bonding in Red Hat Linux and ether channel in AIX.
• Performed system-monitoring with the help of tools like TOPAS, SAR, VMSTAT, IOSTAT to report systems usage and performance
• Maintain & troubleshoot SAN and Fibre card related errors on AIX.
• Maintain & troubleshoot Storage Disks from IBM, HITACHI, and EMC Disk arrays.
• Manage and troubleshoot printer issues.
• Installed SUSE Linux through Autoyast via NFS and HTTP on Dell Servers
• Installed and worked on Confidential Workstation 5.0.0 & installed Confidential tools.
• Involved in defining the network printer setup to the AIX systems. .
• Upgraded the OS level patches/LPARs to the systems to make sure they are current.
• Disk Management on AIX using SMIT.
• Managed LPAR, Storage Area Networks (SAN).
• Performed the daily system administration tasks like managing system resources and end users support operations and security.
• Did SuSe Linux Enterprise System Administration jobs like connecting to Novell E-directory etc.
• Performed the manual backups of Database, software and OS using tar, cpio, mksysb.

Environment: Red Hat Linux 3.x/4.x/5.x, IBM AIX 4.0/5.0/5.1/5.2 , LPAR, HACM 4.2 X/ 4.34.3.1/ 4.4 , Tivoli Storage Manager, Apache Server 1.x/2.x, Confidential 2.x,NIM,Veritas, Netbackup, JBoss, Weblogic 5.1/ 6.1/ 7.0/ 8.1. Hitachi, EMC.

Confidential, Detroit, MI

UNIX Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on Sun Solaris 8,9,10 and Red Hat Linux 4.0 on sun Servers & HP-Dl585 servers.
• Installation of Oracle-8i Server, Oracle Client Software on the application server and configuring the connectivity using JDBC drivers for the DB.
• Troubleshooting the connectivity from the Application to DB, maintenance of the DB’s in server
• Installed of all the required Software, patches, documentation, licensing trouble shooting.
• Used Symantec Enterprise Security Manager for system integrity check on newly build servers
• Supported Bugzilla, Media Wiki, SVN running in Red Hat Enterprise Linux
• Performed Red Hat Linux kernel, memory upgrades and undertook Red hat Linux Kick start installations.
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security
• Managed Red Hat Linux kernel, memory upgrades and swaps area. Red hat Linux Kick start Installation
• SENDMAIL configuration and administration, testing the mail server.
• Involved in making the new builds Infrastructure Ready, Application Ready & Production Ready.
• Managed server nodes running Red Hat Linux, for application bioask.com
• Used internal tools like ESM, Opsware Server Automation, Tideway
• Co-coordinating with team members to push the newly builds into production on the said time-line
• Wrote bash and Perl scripting for automation purpose.
• Implemented Virtualization using Confidential in Linux on HP-DL585.
• Red Hat Linux kernel, memory upgrades and swaps area.
• Red Hat Linux Kick start Installation - Sun Solaris Jump start Installation.
• Configuring DNS, DHCP, NIS, NFS in Sun Solaris 8/9 & other Network Services.
• Formatted raw disks & partitioned them using the format utility.
• Created file system using newfs and mounted it. Created devices and special files using mknod.
• Network Monitoring Using Nagios tool.
• Setup various user profiles, environment variables/security to ensure smooth operation.

Environment: Red hat Linux 4.0, Sun Solaris 8,9 Sun T2000, Solaris Volume Manager, Solstice Disk Suite, Veritas Cluster Server, Enterprise Security Manager, Opsware, Web logic 8.1, Oracle 9i/10g.

Confidential, Cincinnati, OH

Linux System Administrator

Responsibilities:

• Installed & manually configuring Sun Sparc & X86 machines and through jumpstart installation on workstations like sun ultra 20, sun ultra 40, sun ultra45, sunsparc blade 2500, sunfire servers V215 and adding in netgroups. Installed, configured Zones and maintenance in sun solaris.
• Installed, configured Vm’s on Esx server Monitored Network devices using SNMP.
• Installed, managed Verities Volume Manager 3.5 (VxVM) on Solaris. Created Role Based Access Control (RBAC) for users.
• Installation of web logic, upgraded to service pack updates, installed BEA patches, configuring and creation new domain & services starting & stopping. Installation of Oracle10g on Linux and Solaris, creating database, creating Oracle users & export and importing database, creating roleback segment etc.
• Configured & Managed storage resources using LVM
• Written shell scripts to automate system maintenance tasks for Redhat Linux clusters
• Providing 24 x 7 supports to various application level server level & network level Monitoring & troubleshooting of any datacenter outages.
• Day - to-day administration on Sun Solaris which includes Installation, upgrade & loading patches & packages.
• Configured NFS Servers, NIS+ Servers, NIS+ Clients, Diskless clients and Auto clients and automounted the file systems using direct and indirect maps.
• Also setup entries in /etc/dfs/dfstab in Solaris share file systems and mounted the disks onto the client systems.
• Linux kernel, memory upgrades and swaps area. Red Hat Linux Kick start Installation - Sun Solaris Jump start Installation.
• Experienced in configuring and troubleshooting JBoss Application Server
• Build two new Confidential ESX Server 3.0 & 3.5 in Supermicro server 8045C-3R using Guest OS Red Hat Enterprise Linux, SuSE enterprise Red Hat Linux using Confidential Virtual Infrastructure Client 2.0 & 2.5 tool and configured with CLARiiON storage box
• Formatted raw disks & partitioned them using the format utility. Created file system using newfs and mounted it.
• Created devices and special files using mknod. Installed, managed Solaris Volume Manager (Configuring mirror/Breaking mirror/metadata bases Solstice Disk suite 4.2.1).
• Veritas Netbackup installation and maintenance Backup/restore & Disk/Volume management with Veritas Volume Manager on Sun SPARC Storage Arrays & Multi-Packs.
• Written shell scripts to take backup Oracle database.
• Monitored server and application performance & tuning via various stat commands (top, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat,top, printmgr, hpimliview, dmidecode,smc etc) and tuned I/O, memory etc.
• Perform backup and recovery operating using native unix tools and CA Brightstor ARCserve Backup

Environment: Red Hat Enterprise Linux 3.0/4.0, Sun Storage Edge Disk/Veritas volume manager, IBM AIX 4.3, 5L, Apache Web Server 1.3.x, 2.x, Oracle 8i,9i, Perl, ksh, Sun v480, v880, E220, IBM p630, p550, Dell Power Edge 700,2650,6650.

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.
• Setup LAN consisting of ten RS-6000 Servers running AIX 4.3,5.0, 5.1, and five Solaris Name 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 WLST 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