SUMMARY

• Around 8 years of experience in administering Linux (RedHat, CentOS, Fedora, OEL and openSUSE,Ubuntu, Debian), Unix (IBM AIX, Solaris, FreeBSD,HP - UX 11i) and Windows Servers for Research and Enterprise applications.
• Expertise in installation, administration, patches, upgrade, configuration, performance tuning and troubleshooting of Redhat Linux 4/5/6, Sun Solaris 8/9/10, SuSe EL 7/8/9/10 and Window NT 4.0/2000/2003.
• Experience with high-end enterprise servers like Sun T2000, 5240, M5000, 6800, 4800, HP Proliant DL 380, 385, 580, BL400c, BL480c, BL685c, BL580c Gen 5,6,7,8. IBM HS22, HS12, LS22 Blade center Servers.
• Maintain and use Redhat Kickstart servers, Solaris Jumpstart Servers and NIM Master for installs and upgrades.
• Expertise in file system concepts like LVM, SVM, VxVM, creating new file systems, increasing and decreasing file systems, mounting file systems, un-mounting file systems and troubleshooting Disk space issues.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Experience with backup technologies like Tivoli Storage Manager 5.x, 6.x and Veritas Netbackup 4.x, 6.x, 7.x, EMC Networker v7.
• Experience in Installing, Configuring, and Implementing Virtualization Environment Using VMware ESX and ESXi, Oracle Virtual Box, and Microsoft Virtual PC .
• Experience working with SAN Devices like EMC Clariions, DMX, VMAX, 3PAR, NetAPP filers and NAS Solutions like Oracle ZFS7420.
• Coordinated with SAN Team for storage allocation and Disk Dynamic Multi pathing (DMP).
• Worked on Various Storage hardware like EMC Symmetrix, EMC Connectrix and Hitachi data systems.
• Experience working with Snapmirror & Snapvaults for backup and replication purposes on NetApp devices.
• File system and Disk space management using Veritas Volume Manager 4.x, 5, Logical Volume Manager, Solaris Volume Manager and ZFS.
• Planned, documented and supported high availability, data replication, business persistent, fail-over, fall-back Solutions using Sun Cluster 3.1 and VERITAS Cluster Server 4.0 and Red Hat cluster in SAN environment.
• Experience with configuration management tools like Chef, Puppet.
• Expertise in Installation, Configuration of Package and Patch Management.
• Expertise in Installing and Managing LDAP, NIS, NFS, DHCP, SAMBA and DNS.
• Backup jobs, housekeeping, database, proprietary jobs using CRON, EMC legato Networker and BMC Control-M troubleshooting daily job problems.
• Experience in developing scripts in Bash, Perl, Shell, Python, Korn and Ruby to automate the process.
• Knowledge of Routers, Switches, Hubs, Firewalls, LAN, WAN Intranet, Internet.
• Strong experience and understanding of Auto mounts, TCP/IP, SMTP and Printer configurations.
• In Depth knowledge and experience with LDOMs, Server Domains and Zones/Containers.
• Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat and Sun ONE.
• Monitoring the hosts and networks using NAGIOS, HP OpenView and BMC Products.
• Strong Experience in Weblogic 5.1, 6.1, 7.0, 8.1 and 9.1, 9.2 Application Server and experience in Weblogic 6.1, 7.0, 8.1, 9.1, 9.2 Clusters.
• Experienced in implementing the workload Management (WLM) using cloning and clustering.
• JBoss including installation, configuration, management and troubleshooting.
• Worked with different database Environments like Oracle, IBM DB2, Sybase and Oracle RAC (Real Application Clusters).
• Configuration and installation of ALOM (Advanced Lights Out Manager) & Load Balancer.
• Experience in architecting, setting up data centers and migration of applications.
• Experience in evaluation of hardware and software requirements and influence purchase decisions.
• Strong analytical, diagnostic, troubleshooting skills to consistently deliver productive technological solutions.
• Providing 24/7 technical support to Production and development environments.
• Excellent client relation skills and the drive to complete tasks effectively and efficiently where customer services and technical skills are demanded as well as the ability to communicate effectively with all levels of management and the client community.

TECHNICAL SKILLS

Operating Systems: Linux(RedHat 3.x,4.x,5.x,6.x,), Sun Solaris 7,8,9 & 10, SuSe EL 7/8/9/10, Ubuntu, Debian, Fedora,OEL,IBM-AIX,HP-UX,VMware ESX 2.x,3.x,4.x. Windows 2000/2003/2008 NT 4.0, Windows 98/2000/XP.

Hardware: IBM x236,IBM x232,IBM x3650,IBM HS22,HS12,LS22 Blade Center, SunT2000, T5240, T5120, HPC7000, BL460c, BL685c, BL465c, BL620c, SunSF15K, SF10KSF6800/4800, SF480/280, V880/890, E6500, E 00, E450/420/250, E220, Netra1405/X1, T1000/2000, T5120/5220, M4000, B6000.

Application Servers: Apache, Tomcat, JBoss 4.x, Web Sphere Application Server 3.5,4.4, MQSeries WebLogic Server, Solstice Disk Suite, Sun Cluster 3.4 & 4.1, VERITAS File System, VERITAS Volume Manager, VERITAS Net backup 5.1, VERITAS Cluster Server 4.x & 5.x.

Networking: TCP/IP, NIS, NFS, DNS, DHCP, LAN, FTP/TFTP, SSH,SFTP,ARP,RARP,POP3,SNMP,SCP,PPP,SSL,Firewalls.

Programming Languages: C, C++, Shell scripting and Perl programming.

Scripts: Bourne, Bash, Korn, Shell, Ruby, Perl, Python.AWK.

Databases: Oracle 8i/9i/10g, Sybase, SQL Server 2005/2000, DB2, PL/SQL.

Open Source Tools & Other Exposure: Nagios, Puppet, Splunk, Jira,OpenStack,Chef.

PROFESSIONAL EXPERIENCE

Confidential, Irving, TX

Sr. Linux/Unix Admin

Responsibilities:

• Installed, Configured and Maintained Solaris/RedHat Linux (RedHat Enterprise 6.0 Solaris 8, 9 & 10, OEL 5/6,) on SPARC, x86 and Blade Centers.
• Supported Redhat servers in Production and Development environments.
• Worked on Virtualizing Redhat servers using vSphere 4.1/5.0 and managed ESX servers using vCenter and also worked with ESX Cluster and vMotion.
• Virtualized servers using Solaris Zones/Containers on Solaris10, Created and maintained Whole root and Sparse root Zones/Containers.
• Configured ZFS, UFS, VXFS and lofs filesystems on the Solaris 10 Non-Global Zones.
• Installed and Configured RedHat Linux Kickstart using Cobbler and configured YUM repositories for different Minor Versions of Linux.
• Worked with IBM X series, HP DL and Dell Power Edge Model rack and blade centers like HP C6000 & C7000.
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC).
• Performed SAN Migration (Host-based Data Migration) on RHEL and Solaris servers using VXVM.
• Installed and configured openLDAP to create user accounts and to assign access permissions to the users.
• Installed and Configured 10GbE Interfaces for Solaris Sparc with dual port NIC cards for Active/Passive, Aggregation (LACP) modes and Active-backup (mode 1), LACP (mode 4) for RHEL 5/6.
• Worked with Centrify, on top of openLDAP whichenables to consolidate all workstations, user, and group accounts in Active Directory and use Active Directory for all authentication, authorization, and directory services.
• Handling and generating tickets via the BMC Remedy ticketing tool.
• Extensive experience with job scheduling utilities like Crontab, AutoSys, Control-M.
• Installation and configuration of backup clients like Networker on Linux servers.
• Experience working with HP Openview for client and server configuration.
• Experience in writing Scripts to automate jobs and debugging scripts.
• Experience in configuration of Disk Quotas and ACLs and File Permissions.
• Experience in setting up SWAP memory under Linux
• Monitoring the hosts and networks using SPLUNK, NAGIOS, and JIRA tools.
• Experience in using protocols like NIS, NFS, SSH, SFTP & DNS.
• Installation of Solaris 9, 10 using Jumpstart, Redhat EL 4.x, 5, 6 using Kickstart/PXE and SuSe Professional desktop 10x.
• Administered Volume groups and Logical volumes using Linux volume manager and SVM, ZFS in Solaris.
• Installation and support of various applications like Weblogic server 10, WebSphere 6.1 JBoss 4.x, Apache 2.x, Oracle 9i, 10g, Mysql, Informatica Power center 8 on Solaris 10.
• Administration of Websphere Application Server 6.x with Network Deployment, and Extension Deployment, on RedHat Linux.
• Responsible for supporting the existing infrastructure and support for Production and Non-production servers. Worked on high and critical priority tickets, coordinating with different teams, and customer and provided with appropriate RCA’s.
• Mirroring of root disks using Hardware Raid Controller on HP & Dell HW.
• Managed 100 + UNIX servers running RHEL, Solaris on Oracle, HP and Dell server including blade centers.
• Experience working with HP and IBM Blade centers to consolidate data centers.
• Involved in Designing and Implementing host level migrations and replacing virtualization using P2P and P2V.
• Set up and configure VERITAS Netback up 5.X, 6.X and 6.5X, Net Backup Server/Client & tape libraries.
• Monitor, modify and optimize Net Back activity, backup schedules and reporting proactively to avoid issues.
• Creating volumes using storage for VMAX Array on Redhat & Solaris servers.
• Data migration at Host level using Red Hat LVM, Veritas Volume Manager and Solaris SVM.
• Troubleshooting and performance tuning of various systems problems such as application, network and hardware related issues.

Environment: Solaris 8, 9, 10, Redhat EL 6.x, SuSe 10, IBM x3650, IBM x232,IBM x236,SUN T2000, T5120,T5240,M5000,Sparc T4-4, E220, E420, 450, V240, V880/890, E3500, BL460c, BL480c, BL685c, EMC-Networker Netbackup, IBM Tivoli Storage Manager, HP, Cisco Works, Korn shell, VMware ESX3.5, VMware Vsphere ESX4.0.

Confidential, Coppell, TX

Sr. Linux/ Solaris Admin

Responsibilities:

• Installed and configured of hardware and OS (Solaris 10, SUSE and RHEL 4/5) on x86 servers.
• SAN support from a directory standpoint, technology scaling, server builds, migration and/or transition planning, project planning, and standards validation/development, troubleshooting and problem resolution.
• To provide ongoing support in systems management and administration of Linux/Solaris in global-scale environment.
• Provided 24x7 supports for various divisions within the Company and resolve all production issues in a high pressure and time sensitive environment.
• Experience in setting up SSH, SCP, SFTP connectivity between UNIX hosts.
• Developing scripts in BASH, PERL and SHELL to automate the process.
• Implemented Puppet Version 3 for Automation in the Non-production environment
• Weekly meeting to discuss change management, datacenter and infrastructure approvals/issues.
• Monitored health of servers and implemented customized solutions where applicable as well as provide reports on server utilization.
• Production Support & Systems engineering duties related to Redhat system administration DNS, DHCP, NFS, NIS, LDAP, user account maintenance, backup & recovery, Auto-mounting, License Management, Printer configuration.
• Client interaction for requirement gathering, so as to design and plan the software and hardware infrastructure. Installed and configured Oracle 10g and MySQL databases for development and production use.
• Managed e-mail systems, including POP, SMTP, text, and web-based clients, as well as virus scanning/filtering software.
• Installed, configured and managed DNS service for several domains; Performed OS installations and configuration for testing and implementing server environment based on virtualization.
• Created test scenarios for testing NIS, NFS, DNS and other functionality of the OS. Maintained system security, including password checks, permission scans, implementation of security ensuring tools Linux environment. Managed disk space on server systems using Software RAID and Logical Volume Manager.
• Installed and maintained web servers Apache Tomcat and Apache HTTP (1.3, 2.2) Web server in Red Hat Linux.
• Issues related to NFS, NIS, and LVM, Grub corruption, configuration & maintenance of RAID (level 0, 1, and 5).
• Dealt with Linux Utilities: KICKSTART, SSH, FTP, AUTOFS, Quota Management, wrappers. And provide timely solution to users on issues of network environment & software problems. Also, configured Linux servers to handle the following duties: User Management, Process Management, Memory Management, and Text processing tools, Log Management, Package Management, Disk Management and SWAP Partition/Files Management.
• Installation of Firewall checkpoint. Installed and configured I Filter, to protect Linux system that was placed on the Internet.
• Handled installation and configuration of Linux MTAs - (Sendmail).
• Provided technical support for clients and application development teams.
• Prepared Bash Scripts for Automation of Server tasks. Extensive development of maintenance scripts to monitor system status, providing web-based, e-mail notification of system problems such as security breaches, loss of network connectivity, mail queues, user activity, disk allocation, and application availability.
• Preparation of operational testing scripts for Log check, Backup and recovery and Failover. Creation and implementation of shell scripts to take care of DB backup, monitoring alert log and log rotation reports.

Environment: Redhat Linux 3,4,5,6 Sun Solaris 8,9,10, SUSE Linux, Sun V440, V 20 T5240 Sparc stations 20, Switches, VMware ESX 5.1, oracle 11, Veritas Cluster Server 5, and Veritas Operations Manager. DL380, DL 580,585 G2, G5, G7’s

Confidential, Malvern, PA

Unix/Linux Admin

Responsibilities:

• Installation and Configuration of Solaris 10, Red Hat Linux 5, CentOS and IBM AIX operating systems on large distributed environment.
• Configured, administered and effectively monitored IBM AIX on IBM bladecenter servers and P-series servers.
• Implemented remote installation on servers using AIX Network Installation Manger (NIM), RedHat Linux Kickstart and Solaris jumpstart Servers.
• Installed and configured RedHat softwares and 3rd Party tools using RPM’s and YUM on RedHat servers.
• Administration, Maintenance and Management/Monitoring of Netapp filers/Clusters which includes FAS 2040.
• Worked on NetApp filers like FAS 3240 & 6070 running DATA ONTAP 7.x.
• Involved in creating volumes on RAID groups and aggregates and sharing to Windows and UNIX servers using CIFS & NFS.
• Worked on scripting using shell, bash and korn.
• Experience working Snapmirror & Snapvaults for backup and replication purposes on NetApp devices.
• Administrated NFS, NIS, DHCP and DNS Samba services running on AIX, Sun Solaris and Red Hat Linux.
• Upgraded Red Hat Linux servers from 5.2 to 5.4 and AIX from 5.2 to 5.3.
• Involved In Migration from Solaris to Red Hat Linux.
• System performance tuning, User administration and security.
• Scheduling Backups, Monitoring & taking failover test of Veritas Clustered servers.
• Monitoring of Tivoli storage logs for restarting any failed backups or trouble shooting any file permission or stale file handling problems.
• Ability to screen and diagnose client inquiries and problems; troubleshoot to clearly understand problems (root cause determination), solve problems, use operational documentation (runbooks)
• Responsible for administering and maintaining RedHat Linux work stations running Apache web server.
• Configured and Administered JBOSS 4.2 on RedHat Linux and Solaris Cluster Nodes.
• Installed and configures Weblogic 9.1.
• Installed and Configured VMware ESX 3.5 server and Installed Red Hat Linux servers on top of it.
• Provided eCommerce application support for Java/J2EE based ATG Dynamo and Websphere environments.
• Worked in Data center environment for configuring new Hardware.

Environment: IBM AIX 4.3,5.1,5.2,5.3,Solaris 8/9/10, Red Hat Linux 5.x,CentOS, IBM Blade center Servers (HS20, HS21), Lenovo workstation’s (D2, D3, D10, D20), IBM P570, p590, 595MQSeries 5.0

Confidential

Linux Admin

Responsibilities:

• Installation of, Configuration &Upgrade of Solaris,AIX,HP-UX,RedHat Linux and Windowd-NT operating Systems.
• Installation of Sun E250, E450, Sun E3000,E6900, SunFire v440/v480/v490 with Solaris 8/9.
• Upgraded/Migrated Solaris 7 to Solaris 8 on Sun servers and workstations.
• Configured Winbind on all Linux workstations which enables all the Linux users to be authenticated on Microsoft Windows 2000 Active Directory Server.
• Monitor T1, ISDN, 56k Modem, Router connectivity and all main servers' activity on a continuous basis.
• Used RPMs to install, update, verify, query and erase packages from Linux Servers.
• Authorized Solaris users/groups to access various applications and troubleshoot various user problems using management tools.
• Installation Packages and patches.
• Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging.
• Administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management, dumb terminals and devices carried out.
• Incident management for Unix Servers (Solaris, Linux and AIX).
• Involved in migration AIX servers from 5.2 to 5.3.
• AIX systems administration and Disk Management using SMIT
• Primary responsibility includes building and supporting Solaris/ Red hat Linux 3, 4 servers.
• Extensive experience in installing, integrating, tuning, and troubleshooting Apache, Tomcat WebSphere and Weblogic application server.
• Installation and configuration Veritas Net Backup on Sun Severs and performing Backup using Veritas Net Backup.
• Sudo administration and Redhat Linux package administration using RPM and YUM.
• Involved in migration of projects from one flavor to another one.
• Worked on SAN using Tivoli Storage Manager in allocating filesystems to the end users and for managing storage.
• Worked as part of Testing Team in Application testing using Manual methods and Scripts.
• Worked in Data center environment for racking servers and configuring new Hardware.
• Worked with other IT teams, customers (users), and other managers in helping build and implement systems and standards.

Environment: IBM AIX 4.3.3, 5.1, 5.2, Solaris 8/9/10, HP-UX, Red Hat Linux 4/5, Windows NT 2003/2000/ XP, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite.