SUMMARY

• 7+ years of IT industry experience in System Administration on Red Hat Linux, IBM AIX, Sun Solaris,Cent OS,SUSE Linux, Web logic Server Environments.
• Expertise in Installation, Configuration and administration of Red hat Linux 4x, 5x,6x Solaris 7, 8, 9, 10, Cent OS, IBM AIX 5.x.6.x,7.1
• 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 XenApp 4.5/5.0 & Citrix Client Tools.
• Experienced in supporting database systems including Oracle, MySQL on Red Hat Linux/Unix.
• Extensive experience in Installation, Configuration and Troubleshooting of various web server issues including, 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.
• Experience in setting up a RAID and troubleshooting the issues on various Servers like Solaris and Red Hat Linux.
• Experience in troubleshooting issues with Rackspace Cloud Servers by OpenStackconfiguration on Linux operating system.
• 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.
• Knowledge of installation, configuration, and administration of PostgreSQL database systems.
• 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, ZENOSS and Xymon.
• Efficiency in installing, configuring and implementing the RAID technologies using Veritas Volume manager and Solaris Volume manager.
• Hands on experience Scheduling a job using autosys R11 architecture with various components (Application server, scheduler, Event Server, Remote agent, eEEM aka eIAM, WCC).
• 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 remedy, Amdocs ClarifyCRM, Unicenter& Smart trouble ticketing Systems/kintana tickets etc.
• Expert in Production environment, monitoring the incidents and resolving before reaching the SLA.
• 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, 10SUSE Linux 9, 10,Cent OS.

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

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

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: Bash, KSH, Perl, SQL,Python,and Ruby.

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

PROFESSIONAL EXPERIENCE

Confidential, Watertown,MA

Senior System 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
• Performed installation, configuration and maintenance of Red Hat Linux4.x, 5.x.
• Provided 24x7 System Administration support for AIX 5.3/ 5.2/ 5.1 based servers andRed Hat Linux 4.x, 5.x,Cent OSservers 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 manageent 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 usingmksysb, 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 VMwarevirtual infrastructure, VMwareESX
• Installed and maintained IBM TivoliStorage 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 LinuxKickstart installations.
• Created users, manage user permissions, maintain User & File System quota on Red HatLinux 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 Linux4.0/3.0/9.0 based systems.
• Production support of Apache andJBoss 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 VMware 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, Richardson, 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 issues related toTivoli 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 unmaskpermission 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 VMware 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 Autoyastvia NFS and HTTP on Dell Servers
• Installed and worked on Vmware Workstation 5.0.0& installed Vmware 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 SuSeLinux 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, VMware 2.x,NIM,Veritas, Netbackup, JBoss, Weblogic 5.1/ 6.1/ 7.0/ 8.1. Hitachi, EMC.

Confidential, Owings Mills, MD

Linux System Administrator

Responsibilities:

• Performed installation, configuration and maintenance of Red Hat Linux4.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 SecurityFramework ( GSF ) packages which are unique to CITI GROUP 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.
• Configuring and Administering DNS and LDAP on AIX and RHEL server environment
• Hands on experience in build tools like Jenkins/Hudson.
• There is crontab activity which runs regularly, which reports various RHEL and zLinuxservers to backend server called ConfigDBwhich 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 HatLinux 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 LinuxKick start installations
• Installating 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,lpfcdrivers,HBAmultipaths,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 Veritasclustered boxes usingVxdiskadmand checked various fail over scenarios to make sure the functionality of Veritas cluster .
• Used to maintain various RHEL and zLinux boxes on twoVcenterson 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.
• 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 VMware 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, Columbia, MD

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 LinuxKick 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 LinuxKick 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 VMware 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 

Linux/System Admin

Responsibilities:

• Installation, Configuration and troubleshooting Red Hat Enterprise Linux.
• User Account Management - Users and Group Creation and Customization.
• Disk Administration Using LVM and Disk Management.
• DNS & NTP configuration & administration.
• Monitoring, Install and Update Software Patches and security Patches for all applications in installed infrastructure.
• Taking Backup and Restoring by Using tar and dump Utilities.
• Monitoring and Handling day to day Remedy tickets based on priority.
• Followed up with Open Tickets while coordinating with different teams and implementing the changes in Linux.
• Responsible for being On Call Support 24/7.