SUMMARY

• Over 8 years of experience specialized in System Administration working on Redhat Linux, Suse Linux, Cent OS, AIX environments.
• Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of AIX & Linux.
• Experience in Installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x using Kickstart Servers and Interactive Installation.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM.
• Experience in creating and managing LPARs on different IBM servers like p570, p590, p595, p630, p650, p670, p690 and p770.
• Experienced with installing and upgrading operating system on client using various methods including NIM installation using and creating lpp source and SPOT.
• Installation, configuration and administration of VIO server and VIO client LPAR’S via HMC and configuration of the virtual devices and adding/removing devices using DLPAR.
• Installation and up gradation of Packages and Patches configuration mgmt, version control, service pack. & reviewing connectivity issue regarding security problem.
• Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, and postfix, send mail, ftp, remote access, security management and Security trouble shooting skills.
• Experience on Webservers such as iPlanet Webserver 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x & Apache Server 1.x, 2.x and integrating them with Weblogic 10.x servers.
• Experience in administering VMware Infrastructure Client 3.5 and Vsphere 4.0.
• Experience in Installation of Oracle and MYSQL.
• Experience in writing shell scripts to automate the administrative tasks and management using cron and at.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays.

TECHNICAL SKILLS

Operating Systems: RHEL 3/4/5/6, IBM - AIX 5.X, Windows 98, Windows 2000 and NT.

Hardware: HP Proliant, Blade servers, BM RS/6000, pSeries 650, 630, 670,850

Software: Veritas Volume Manager 3.5/4/5, Veritas File System, Veritas Cluster Server 3.5, Veritas Netbackup 6.0, MS-Office/MS-Project.

Web/ Application Server: Tomcat, Apache DB2, Oracle.

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstat, NFS, NIS, nslookup, RIP, OSPF, BGP, TCP/IP, and tcpdump..

Cluster Environment: VERITAS Cluster Servers 4.1.

Programming Languages: SQL,Perl and Shell Programming, Python

PROFESSIONAL EXPERIENCE

Confidential, Providence, RI

Linux / AIX Administrator

Responsibilities:

• Worked on AIX 5.3 and 6.1 running on ten P5s (P550 and P560), two P6s (P6 550), and six P7s (P700, P702 and P750, P850) attached to EMC storage subsystems
• Experience with Power VM 2.2 (VIO), HMC Version 6 and 7, EMC clarrion subsystem device configuration (Power path)
• Power VM Virtualization (SEA, vSCSI, NPIV), Dynamic LPAR (DLAPR).
• Experience working on HMC, installing and configuring VIO Server, LPARs/DLPARs and subsequent maintenance and administration.
• Configuration of VIO server and VIO clients from Hardware Management Console.
• Worked on Shared Ethernet Adapter failover load sharing and building up of VIO servers. Also performed failover testing.
• Perform system installs and performance tuning, configure and administer AIX 5.3, 6.1 LPAR’s
• Perform day to day LVM operations and System Admin tasks.
• Expertise in Unix and Linux system installation, configuration, administration, the development and testing of backup and recovery methodologies, troubleshooting, capacity and performance planning, performance tuning, preventative maintenance, monitoring and alerting setup and security hardening.
• Installation and Configuration of Network Installation Manager (NIM), configuring the NIM master and assigning the clients and taking the mksysb of the NIM client on the NIM master.
• Configuration and administration of Fiber Adapter’s and handling SAN disks on AIX.
• Coordinating with application and database team for troubleshooting the application or Database outages.
• Coordinating with SAN team for allocation of LUN's in order to increase file system space.
• Configuration and administration of Fiber card Adapter's and handling AIX part of SAN.

Environment: AIX (5.1, 5.2, 5.3, 6.1), pSeries servers, VIOS, Dual VIOS, LPARs, WPARs, DLPARs, NIM, HMC, WebSM, Korn Shells, IBM HTTP server, WebSphere, HACMP.

Confidential, Philadelphia, PA

Unix/Linux Administrator

Responsibilities:

• Administration of RHEL and AIX 4, 5, 6.2 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Worked on AIX 5.3 and 6.1 running on ten P5s (P550 and P560), two P6s (P6 550), and six P7s (P700, P702 and P750) attached to EMC storage subsystems
• Experience with Power VM 2.2 (VIO), HMC Version 6 and 7, EMC CLARiiON subsystem device configuration (Power path)
• Power VM Virtualization (SEA, vSCSI, NPIV), Dynamic LPAR (DLAPR)
• Perform system installs and performance tuning, configure and administer AIX 5.3, 6.1 LPAR’s
• Perform day to day LVM operations and System Admin tasks
• Installation, configuration, administration of Solaris 9, 10 on SPARC based servers using Jumpstart.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts.
• Installing RedHat Linux using kickstart and applying security polices for hardening the server based on the company policies.
• Administration on HP-UNIX servers critical hardware failure
• Administration, package installation, configuration of Oracle Enterprise Linux 5.4.
• 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.
• Worked on Openstack (Havana) installing, configuring, administering virtual machines, creating security groups, add resources, tenants.
• Installing, configuring Redhat servers via Cobbler, automating scripts, tasks using Cobbler.
• Installation, configuration of MySQL 5.1 which includes creating database tables, updating table entries.
• Creating profiles, manifests for new servers, and pushing them to servers using puppet.
• Worked on Oracle OVM, creating LDOMs, adding resources, hardware.
• Creating policies, jobs in HP Opsware, deploying them on linux servers.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager & Solaris Volume Manager. File system Tuning and growing using VERITAS File System (VxFS), coordinated with SAN Team for storage allocation and Disk Dynamic Multi path.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Worked on KVM, installing, configuring Linux VMs.
• Installing, configuring Jboss 4.3 on Linux, Unix servers, integrating it with Apache server.
• 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.
• Installing and configuring Apache and supporting them on Linux production servers.
• Worked on E-commerce based application products related to internet marketing, credit card transactions, inventory management.
• 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 on 2,3, 4 node clusters.
• Experience in open stack and puppet configuration tool.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g 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 465C G5 blade centers).
• Installing, configuring Weblogic 10.3, Apache and integrating them.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Adding servers to the domain and monitoring them using spectrum, sitescope, cacti.
• Developed automated processes that run daily to check disk usage and perform clean up of file systems on UNIX environments using shell scripting and CRON.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485,ML Series, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 3.5, VMware Insfrastructure 3.5.

Confidential, Baltimore MD

Linux/Unix Administrator

Responsibilities:

• Installation and administration of RHEL 4, 5., 6.2 on HP platform and Cent OS 5.
• Installing, configuring and managing HP Unix servers .
• Build countless VIOS and LPAR’s on p-series p550, p570, p590, p780. Configuration and installation.
• Used HMC to create partitions on frames
• Created numerous frames with virtual resources and allocated the same to virtual clients
• Created vscsi & virtual Ethernet adapters
• Installing the OS with Ignite-UX.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• 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 AD, installing and configuring sendmail.
• Creating profiles, manifests for new servers, and pushing them to servers using puppet.
• Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation scripts.
• Installed, configured AIX 5.3, 6.1 on IBM p,x series servers using NIM, creating LPARs using HMC on p series servers.
• Creating virtual machines using Xen and deploying OS, managing hardware.
• Creating, installing, Weblogic Application servers, deploying WAR, JAR files on them installed on both Linux, AIX servers.
• Installing, configuring Jboss 4.3 on Linux, Unix servers, integrating it with Apache server.
• Worked with project manager and auditing teams to implement PCI, SOX compliance.
• Management and monitoring of various services using Service Management Facility and Service Administration.
• Installing, configuring Veritas Netbackup 6.5 on linux servers, creating backup polices.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
• 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 AS/EL 4.0, AIX 5.2, 5.3

Confidential, Sacramento CA

Systems Administrator

Responsibilities:

• Installation and configuring of Linux servers.
• Involved in Building and configuring 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.
• 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.
• 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.
• 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 AIX & 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: 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, New York City, NY

Unix Administrator

Responsibilities:

• Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
• Configured kickstart server and updating/applying patches to the servers using Redhat Satellite server.
• Remote system administration using tools like SSH, Telnet, and Rlogin.
• Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades.
• Automation of jobs through crontab and autosys.
• Installation of packages, patch management, volume managment 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 AD, 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.
• Expertise in VMware vSphere 3/4/5 version ESXi and vCenter operations Management.
• Worked with project manager and auditing teams to implement PCI compliance.
• Build LPAR and DLPAR system and Installed AIX 5.2, 5.3 on LPAR using NIM.
• 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.
• Installed, configured, cloned VMs on VMware 5, Vsphere 4.0, configured ESX hosts, adding datastores to ESX hosts, creating vswitches, templates, migrating VMs across ESX hosts.
• Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
• 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.
• Installing, configuring Nagios on Linux clients.
• 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: Veritas Volume Manager, Samba, NFS, NIS, LVM, Linux, Shell Programming.

Confidential

Systems Administrator

Responsibilities:

• Installation, Configuration, Up gradation and administration of Sun Solaris, RedHat Linux.
• User account management and support.
• Jumpstart & Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
• Network traffic control, IPSec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
• Responsible for configuring and managing Squid server in Linux.
• Configuration and Administration of NIS environment.
• Managing file systems and disk management using Solstice Disksuite.
• Involved in Installing and configuring of NFS.
• Package and patch management on Sun servers.
• Kernel tuning, Writing Shell scripts for system maintenance and file management.
• Worked on Solaris volume manager to create file systems as per user and database requirements.
• Trouble shooting the system and end user issues.
• Responsible for configuring real time backup of web servers.
• Log file was managed for troubleshooting and probable errors.
• Responsible for reviewing all open tickets, resolve and close any existing tickets.
• Document solutions for any issues that have not been discovered previously.

Environment: Sun Solaris 2.6/7, SUN Ultra Enterprise 6000/450, SUN Ultra 10/5/2/1, Windows NT 4.0, RHEL 3.x.