SUMMARY:

• Over 6 years of IT experience in UNIX System Administration in Red Hat - Linux, HP-UX, IBM-AIX and Windows environments.
• Extensive experience in Installation, configuration and administration of AIX 4.3/ 5.1/5.2/5.3/6.1, RHEL 5.x/6.x, OEL 4/5.x and SUSE Linux 10.x/11 and day-to-day system admin tasks.
• Expert in Kickstart, Jumpstart and NIM installation methods for RHEL and IBM-AIX
• Created and maintained user accounts, profiles, security rights, disk space and process monitoring.
• Installation of guest OS, configuration and patch application on hosts using Tivoli Provisioning Manager (TPM).
• Implemented day-to-day tasks in Red Hat Linux including upgrading RPM’s, Kernel tuning, HBA Driver, configure SAN’s, Multipathing and Logical Volume Manager(LVM)
• Installation of patches, security fixes and packages on AIX and Linux servers
• Installation and configuration of Web hosting administration such as HTTP, FTP, SSH, & RSH
• Experience in Configuration of multiple logical subsystems utilizing IBM HMC with LPAR configuration, NIM to install LPAR.
• Providing Troubleshooting and Customer support in critical 24x7 production and development environments.
• Experienced in working with SAN hardware from vendors including EMC (Symmetrix and CLARiiON), Hitachi and Sun StorageTek.
• Expert in automated installation, software distribution and production deployment using SystemImager.
• Experience in LPAR, having Knowledge on Dynamic LPAR and different Regatta servers like p630, p650, p670 and p690.
• Expertise in Installation and configuration of HACMP v 5.1/5.2/5.3 and also migration of HACMP 4.3.1/4.5 to 5.1 using node-by-node migration without changing the cluster setup.
• Supported WebSphere Application Server, IBM HTTP/ Apache Web Servers in AIX environment for various projects.
• Experienced in installing LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Expert in Installing, configuring and maintaining DNS, NIS, NIS+, NFS, DHCP, TCP/IP.
• Expertise in implementation and designing of disaster backup and recovery plan.
• Expertise in Networking (TCP/IP, Ethernet), FTP, NFS, NIS, DNS, DHCP and RAID levels.
• Experienced in working with different teams such as Network Engg., Database team and application teams to resolve the issues and provide Customer Satisfaction.
• Experienced with using Oracle RAC for clustering and high availability in Oracle database environments.
• Experienced with Automatic Configuration of system builds using Puppet, stackIO, xcat.
• Efficiency in installing, configuring and implementing the RAID Technologies using various tools.
• Expert in Installing, configuring and maintaining apache/tomcat, samba & send mail, Web Sphere Application Servers.
• Experienced in Wily Introscope installation and configuration
• Implemented OpenSSH based security for the RH-4.
• Experience in Installing and configuring Wireless network using SSL and RADIUS authentication. Set up Linux firewall router to increase network protection.
• Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio
• Expert in writing Shell scripts using Ksh/Csh/bash/Perl to ease administration tasks
• Excellent skills in analyzing, designing, implementing and system integration, Knowledge on Switches, Routers, & Firewalls
• Configured and Troubleshooted TCP/IP network services
• Performed server consolidation and virtualization using VMware ESX 3.5/4/4.1; created VM’s on VirtualCenter server and installed guest OS using Virtual Infrastructure client.
• Team player with good management, analytical, communication and interpersonal skills.

TECHNICAL SKILLS:

Operating Systems: AIX 5.1/5.2/5.3/6.1, RHEL 3.x/4.x/5.x/6.x, SLES 9,10,11, OEL 4/5, Windows NT 4.0/2000/2003/ XP, VMWare ESX 3.5,4.0,4.1

Hardware: BM RS/6000, pSeries 520, 550, 570, 575, 590, 595, 650, 630,670, M80, S80, H70 and H80, z/VM-9 series, IBM ESS (Enterprise Storage Server), DS8000, DS4700 IBM 3494, 3583 Automated Tape Library, Brocade, SUN Enterprise 450, SunFire 4500,V880, V480,E420R,E450,E250, HP DL 380s and 580s,EMC Symmetrix, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers DELL Poweredge 1650, 2850, 2950, 6400

Web/Application Servers: Tomcat, JBoss 4.0.x, Apache 1.2,2.x, WAS 3.5/4.0, MQseries, Weblogic, Java Webserver

Cluster Server: Veritas Cluster Server(VCS), HACMP

Languages: C, C++, Java, .NET, XML, PHP, PL/SQL, Shell Scripting(Perl, ksh,csh,bash)

Server Management: SMC, SystemImager, Big Brother, Nagios, Compaq Insight Server manager, Intel LAN desk manager

Firewall: Cisco PIX 5.1/6.2, Checkpoint 2000 VPN-1/Firewall - 1

Databases: Oracle RAC, DB@/UDB, AS/400, MySQL server

Tape Hardware: Storage Tek Tape Libraries L40, L80, L180, L700, Sl500, Sl850, DAT&DLT, STK 9940B, LTOs

Monitoring: Nagios, Tivoli, rrd, TPM, TPC.

PROFESSIONAL EXPERIENCE:

Confidential, Columbus, OH

RedHat Linux Systems Administrator

Responsibilities:

• Worked in a pressured environment installing, configuring and managing various software components
• JBOSS EAP 5.x including clustering configurations and monitoring
• Installation and configuration of web servers like Apache
• Responsible for troubleshooting environment issues, configuring environment software, documenting environment architecture and support procedure as well as handling production software deployments.
• Configure, update, support all 3rd party software to production like, Apache, MySQL, JBoss, CentralDirector, Tibco, Sonic.
• Worked on user stories in Rally software for testing application for performance tuning.
• Development of Introscope consoles, monitorings, metric groupings, alerts via the Introscope dashboard, Investigator and Management module editor.
• Worked on testing Introscope monitoring in JBoss EAP 6.x
• Responsible for real-time proactive environment monitoring
• Monitored system logs for errors and issues pertaining to environment availability.
• Reported errors in Bugzilla to keep track of errors in logs and take action item.
• Created users, manage user permissions, maintain User & File system quota on Solaris and Linux servers.
• Experience in LVM, Kernel and performance tuning on Red Hat Linux.
• Worked on server lease roll process where we migrated to newer hardware for better throughput.
• Worked on updating Hardware and software list pertaining to all the different environments.
• Configured and managed the whole array of Web, Database, Mail, Static Asset, Cache, Git, FTP, LDAP, DNS and Name servers with Puppet or CFEngine
• Day-to-day system health checks of OS and application environment and report daily sytem usage and metrics.
• Follow the method of procedures adopted by the organization and open tickets to perform application level installation and configuration changes to any server hosting the application.
• Work closely with Hardware vendor support to detect and resolve any issues related to the environment.
• Troubleshoot hardware, software and operating system related errors in Linux and HP-UX.

Environment: RHEL 5.x,6.x, HP-UX 11.31, JBOSS, LDAP, DNS, Introscope 9.0.6.2, NFS,TCP/IP, SAN, NAS, Nagios 2.x, Web Logic 8.1, Oracle 11g, IBM TPC v4.1, VMware 3.5/4.x, Shell Scripting.

Confidential

RedHat Linux Systems Administrator

Responsibilities:

• Responsible for managing the IBM environment and supporting four major applications at Verizon.
• Responsible for production, break-fix troubleshooting during the overnight shift and for successful implementation of changes on these applications.
• Troubleshooting and replacing blade/system board/memory cards on IBM Bladecenter line of products like Blades HS21, HS22 for Bladecenter H and HT.
• Performed monitoring of DS8300 with IBM Tivoli Storage Productivity center (TPC v4.1).
• Responsible for monitoring two IBM DS4700’s and replacing failed drives and controllers on them.
• Performed firmware upgrades for the DS4700 on IBM DS Storage Manager, Controller/NVSRAM firmware and the drive firmware.
• Collect and review DSA logs and RSA reports with IBM Support for hardware and software tickets.
• Collect logs to report issues using Storage Manager for DS4700, Advanced Management Module(AMM) for Bladecenter, RSA II for xSeries and TotalStorage for HMC.
• Review /var/log/messages on RHEL, logs on nSeries, health-check alerts on IBM Total Storage Client, xSeries RSAII Event Log, Bladecenter AMM Event Log and HMC Console Open Managed Events .
• Diagnosed and repaired IBM X-Series servers, in standalone & active/passive cluster configurations, including components of fiber channel loops, host bay adapters, device/disk drives as well as host configuration to the storage server device.
• Implementations, troubleshooting, analyze and proactively monitored Redhat systems for the Enterprise. Worked with different application teams to resolve the hardware issues to improve the performance.
• Daily health check for all the servers in the Environment.
• Working on daily Incidents, creating ticktes and requests on production Environments.
• Worked on Unix changes on production servers.
• Performed Firmware Level Upgrades on system, Ethernet and Fibercard on different Servers.
• Solved ssh, telnet and Many other Network connectivity issues.
• Worked on removing multiple users present on all the servers in the environment using korn shell scripting.
• Remediated the servers by disabling the then active but unsecured daemons and services like ftp, telnet, nfs, rlogin, rexec, snmp, finger, rsh, tftp etc.
• Co-ordinated with the application teams for remediation of unsecured services
• Implemented Crontabs for Root and normal users.
• Hardware troubleshooting, Maintenance and replacement of failed hardware and configuration of new hardware
• Troubleshoot hardware issues, cabling issues.
• Resolving tickets escalated by lower level of support.
• Worked as a primary-onsite Admin for the production servers.
• Worked on power related issues on the Servers at datacenters.
• Migrated the servers physically onsite.
• Replaced the hard drives on IBM storage connected to the IBM servers.
• Worked on changes on HMC directly in events of lost remote console Connection.
• Upgraded the IBM servers from older versions to the newer versions on Server console by connecting IBM monitors, using the CD's.
• Worked with the hardware team onsite to troubleshoot the servers with any IBM hardware related issues.

Environment: RHEL 4.x, 5.x,6.x, AIX 5.3/6.1, X86, IBM Bladecenter H, HT, x3850,IBM DS4700, DS8300, Veritas Netbackup 4.5, VCS,, JBOSS, LDAP, DNS, NIM, NFS,TCP/IP, SAN, NAS, Nagios 2.x, Web Logic 8.1, Oracle 9i/10/11g, IBM TPC v4.1, VMware 3.5/4.x, Shell Scripting.

Confidential

Linux/AIX Administrator

Responsibilities:

• Installation, configuration and Operating System upgrade on Red Hat Linux AS 4.0 Servers.
• Installation, configuration & administration of RHEL 4.8/4.9/5.5/5.6 and AIX 5.1/5.2/5.3 servers.
• Installation of guest OS, configuration and patch application on hosts using Tivoli Provisioning Manager (TPM).
• Implemented day-to-day tasks in RHEL that include upgrading RPM’s, kernel, HBA driver, configuring LVM filesystems, printing issues, connection/network issues etc.
• Performed server consolidation and virtualization using VMware ESX 3.5/4/4.1
• Created VM’s on Virtual Center server and installed guest OS using Tivoli Provisioning Manager (TPM) for OS deployment.
• Migration of VMware ESXi 4.0 environment to vSphere ESXi 4.1
• Built vCenter 4.1 and vCenter Update Manager (VUM) 4.1 servers. Configured vCenter Update Manager (VUM) server to do host upgrades and patch applications.
• Worked as Red Hat Linux Administrator in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives.
• Rebuilt servers and installed guest OS on zLinux servers.
• Performed system administration of UNIX servers. Managing Compaq and Linux workstations and servers.
• Created users, manage user permissions, maintain user and file system quota on RHEL servers.
• Disk and File system management through Red Hat GFS and other logical volume manager for other flavor of UNIX.
• Configuration of Hardware and Software RAID on Digital Servers
• Installation of Oracle Patches and Troubleshooting, Creating and modifying application related objects, Creating Profiles, Users, Roles and maintaining system security.
• Performed installation, periodic maintenance updates and applied APAR fixes on Linux and AIX servers.
• Installed RPM packages and LPP on Linux servers and IBM P-series AIX servers.
• Analyze system performance, client-to-server traffic, and server-to- server traffic.
• Monitored file system space using simple shell scripts; resize file systems as and when required.
• Configured clustering by using Veritas Cluster Server (VCS).
• Created users, manage user permissions, maintain User & File system quota on Solaris and Linux servers.
• Experience in LVM, Kernel and performance tuning on IBM AIX and Red Hat Linux.
• Written Shell scripts to automate the administrative tasks using cron and at in AIX and Linux.
• Defined and setup Network/Local printers, and install client/server applications.
• Define/setup network protocols, Network File Services (NFS) and Network Information Services (NIS) on Linux servers.
• Security, users, groups administration and daily backup and restore operations, networking service, performance, and resource monitoring.
• Managed nodes running under SAN environment through HACMP.
• Document and maintain the inventory using asset management techniques.
• Responsible for backup of all servers and recovery of all servers.

Environment: RHEL 4.x, 5.x, AIX 5.3/6.1, TPM, X86, IBM P570, P590,HACMP 4.3.1 and 4.5, Veritas Netbackup 4.5, VCS, WebSphere Application Server 3.5/4.0.x, JBOSS, LDAP, DNS, NIM, NFS,TCP/IP, SAN, NAS, Nagios 2.x, Web Logic 8.1, Oracle 9i/10g, Tivoli Storage Manager 5.x, VMware 3.5/4.x, Shell Scripting.

Confidential

Systems Administrator/Engineer

Responsibilities:

• Installation, configuration and Administration of Red Hat Linux AS 4.0 and 5.0 and SUSE Linux 10.x,11
• Installed, configured and Maintenance and Systems Development of AIX 5.1/5.2/5.3/6.1 servers. This included NIM installation and CD media.
• Clustered multiple RS/6000 machines on AIX 5.2/5.3 using HACMP, configured HACMP cluster to keep applications running
• Configured Kickstart Servers and booting the images using PXE in RHEL.
• Installation and configuration of LPAR’s with AIX 5.3 on p5 servers
• Deployed latest patches for Linux and Application servers; performed Linux Kernel tuning
• SWAP box configuration, Implementation of disaster backup and recovery.
• Installed and upgraded packages on Linux Servers using RPM package manager
• Installed and configured SystemImager for automated Linux install and software distribution.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Installed and configured LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Installed and configured SAMBA server for windows and Linux connectivity.
• Implemented and configured Backup policies and Storage Units.
• Installed Web Logic 8.1 with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Installing and setting up Oracle 9i on Linux for the development team
• Setup of Networking services and protocols in AIX including NIS,NFS, DNS, SSH, DHCP, TCP/IP, ARP
• Internet services installation, configuration and maintenance (DNS on bind, WWW on apache, SMTP on send mail, POP3, LDAP...) on Linux platforms, including security of provided services, ability to troubleshoot common and very uncommon problems, high availability services.
• Implemented Red Hat Global File System (GFS) for cluster management.
• Monitoring system resources, logs, disk usage, scheduling backups and restore using Nagios and Veritas Netbackup.
• Implemented Server consolidation and virtualization using UML Linux, XEN and VMware virtual infrastructure, VMware ESX, VMware Vcenter
• Implemented NIS and NFS for administrative and project requirements.
• Network troubleshooting using ‘ndd’, ‘traceroute’, ‘netstat’, ‘ifconfig’ and ‘snoop’ etc.
• Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases
• Manage systems using remote consoles like ILO for HP hardware and HMC for IBM-pSeries
• Tuning the kernel parameters based on the application/database requirement.
• Monitoring system resources, logs, disk usage, scheduling backups and restore
• Set up Quotas for the user accounts & limiting the disk space usage.
• Configuring SUDO and granting root permission to users for performing certain activities.
• File system tuning, growing, and shrinking with Veritas File system 3.5/4.x
• Capacity planning, Infrastructure Design and ordering systems.
• Provided support 24x7 by shift rotation and pager support basis.

Environment: Red hat Linux AS4.0,5.0, AIX 5.1/5.2/5.3/6.1, SLES 10.x,11, X86, SystemImager, Red Hat GFS, IBM HACMP V5.1/5.2/5.3, Weblogic 8.1, Samba, Oracle 9i/10g, EMC Symmetric, CLARiiON, MYSQL, Oracle RAC, LVT, NIM, ILO, Samba, Korn, Bash, Shell Scripting.