SUMMARY

• Over 7 years of experience as UNIX/Linux Administration in RED HAT LINUX/ SOLARIS and Windows, knowledge in computer hardware and I/O devices.
• Strong experience in System Administration, Installation, Upgrading, Patches, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine - tuning on UNIX & LINUX ( Red Hat Linux, SUN Solaris ) Systems.
• Experience with implementation, maintenance and support of multiple server platforms Linux, Sun, HP, and IBM.
• Auto provisions of Server installation using Cobbler and puppet.
• Used CFEngine and Puppet to automate and configure the Large Environment.
• Experienced in configuring Jumpstart and Kick Start servers to initiate installation of Solaris and Red Hat Linux on several machines at once.
• Experienced in installation, configuration, administration, troubleshooting, tuning, security, backup, recovery and upgrades of RHEL 5 to 6, Solaris 8/9/10, IBM AIX . Win NT/2000 Server.
• Installed, monitored and supported Web and Application Servers on Solaris and Linux environments.
• Configured TCP/ IP protocols like NIS, NFS, DNS, DHCP, LDAP, FTP, SFTP, SSH etc.
• Creating and maintaining users, profiles, security, rights, file system management, disk space and process monitoring.
• Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi and Citrix Xen Server. Created and managed VMs (virtual server) and also involved in the maintenance of the virtual server.
• Experience in writing Shell scripts using ksh, bash, Perl and python for process automation of databases, applications, backup and scheduling.
• Experience with data centre backups, disaster recovery and off site media storage.
• Strong understanding on RAID, used LVM, VERITAS Volume Manager.
• Experience with High Availability cluster servers using RHCS & VERITAS Cluster Server
• Experience in data centre backup and recovery operations utilizing StorageTek tape libraries and Legato Network software.
• Installed, configured & upgraded WAS 6.0, 6.1,8.5 and provided extensive support in code deploying,
• Experience with change control processes and incident/problem management software.
• Experience in using Admintool, CDE (Sun Solaris)..
• Highly proficient in working of various mail servers and protocols such as send mail, POP3, IMAP, SMTP and postfix.
• Experience in performing DBA tasks such as creating users, roles, tables, table spaces, imports and exports for development of databases.
• Dedicated to excellent customer service. Self-direction, leadership and problem solving skills. Ability to prioritize and work proactively. Strong communication, documentation and teamwork skills.
• Knowledge of Routers, Switches, Hubs, Firewalls, LAN, WAN Intranet, Internet.
• Experience supporting 7x24 production computing environments. Experience providing on-call and weekend support.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux 5.X/6.X, Sun Solaris 10/9, SUSE Enterprise Linux 10, IBM AIX 5.x, HP-UX 11.23/31, wind NT4.0, Windows 2003/2008/2012/ VISTA/wind7.

Hardware: Sun Fire Servers - V245,420R, V440, V880,V890 and 4800 SUN Enterprise - T2000,T5220 HP-UX- rp3440,rx6600.rx3600,rx7640 Data Centre Servers - E250, E450, E3000 and E3500 Tape Libraries - Sun StorEdge L20/L40/L60, L180 and Storagetek’s 9840 Arrays - Sun StorEdge 3130, A1000/D1000, EMC DMX 800 and 1000

Tools: RHCS, Bacula, Cobbler, Cfengine, Puppet, SVN, GIT, VERITAS Storage Foundation Suite, send mail, VAS, Tumbleweed tool. EMC, Symmetrix

Languages: Shell scripting, PERL, C, C++, PHP, PL/SQL, HTML, JavaScript,.net

Databases: Postgres, Oracle 10g/9/8, MYSQL

Networking: TCP/IP, DNS, NFS, NIS, SSH, DHCP, Cisco Routers / Switches and LAN

Web Technologies: Lotus Domino 5 / 6, Apache 2.0, Weblogic 8.1/9, WebSphere, IIS, HIS, ESX.

PROFESSIONAL EXPERIENCE

Confidential, Bloomington, IL

Unix/Linux System Administrator

Responsibilities:

• Responsible for implementation, integration, problem resolution, root cause analysis, disaster recovery, audits, hardware/software OS and application maintenance, performance tuning, upgrades, OS backups, migrations, adding/removing users, printers, space management, and all other daily system administration functions.
• Converted most of shell and Perl scripts to native CFEngine & Puppet policy.
• Automated Most of day to day work using Puppet under GIT Version control.
• Maintained most of the security Configuration on UNIX/Linux environment with Cfengine Policy under SVN version control.
• Created disk groups, volumes, volume groups and RAIDs using LVM in RHEL & VERITAS Volume Manager.
• Auto Provisioned Installation using Cobbler.
• Installing, Monitoring and maintaining DELL quest Authentication(QAS) service to integrate Unix users with Active directory
• Experience with Jumpstart & Kickstart with PXE Installations on Solaris & Linux
• Building various RPMs and Patches, installing various software’s and patches under RHEL Linux environment.
• Involved in implementing Trac & Mantis Bug tracking tools servers on Red Hat Linux
• Installing YUM server remotely & locally.Scheduled cron jobs for job automation.
• Worked with RHCS Clusters and deployed two-node cluster.
• Worked in Implementing and configuring Bacula Backup tool and recovery of Virtual machines using bacuala.
• Involved in disk configuration and disk crash recovery using format and fdisk
• Configured & Implemented DNS, DHCP, NFS, SAMBA to support cross platform file sharing
• Installed and configured VMware ESX server instances for virtual server setup and deployment.
• Configured and installed RHEL 5.X & 6.X on Vmware and Physical machines (HPDL and PowerEdge R720/710/R910).
• Responsible for creating VMware virtual guests running Linux, Solaris, Windows.
• Customized the user CDE environments and user profiles.
• Troubleshooting and analysis of hardware and software failures for various UNIX servers (core dump and log file analysis).
• Installed, maintained and fine tuned the Apache-Tomcat server and Websphere Application Server in Linux Platform
• Created Bash/perl/python shell scripts to monitor system resources and system maintenance.
• Migration of RHEL 5.X to RHEL 6.5 and working on Migration from RHEL6.5 to RHEL 7.
• Performed application installation and management on Solaris or applications like WebSphere Application Server (WAS) 7, JBoss 4.2.x, 5.x, Oracle 10g, Sybase 12.5 etc.
• Deployed, configured the environment on Webphere .
• Used VERITAS NetBackup & Bacula tool for Backup and recovery
• Installed/Configured Solaris/Linux system - Firewall, IDS,VPN Server, VNC, CVS, TWiki, OpenLDAP, Linux Clustering, SQID,OTRS, Qmail, Sendmail, Web server.
• Worked with SAN, in EMC and HITACHI disks, their configuration and installation of power path
• Used ESN Manager LUN/Meta mapping to perform Storage Allocation / Deallocation for the EMC Storage SAN
• Installation of OAS (Oracle Application Server) on RHEL and its configuration with oracle database.
• Worked with Oracle team for restore of Oracle Instance and Building Oracle Cluster.
• Resolve and Document reoccurring issues for level 2 support.
• Work with Business partners with varying backgrounds to identify there requirements and identify their needs and also security issues.
• Audit using the Tiger audit Tool and identify risk and Resolve.
• Worked on change management application used for problem tickets and production change requests.
• Attended team meetings, change control meetings to update installation progress and for upcoming changes in environment.

Environment: Red Hat Enterprise Linux 4/5.5/6.5, AIX, HP-UX 11.31, Sun Solaris 10/9,, Windows 2012,Websphere, Web logic, VERITAS Volume Manager 5.0, Bacula, Cfengine, puppet, Cobbler, Sun Enterprise 4500, Sun Enterprise T2000/T5220, Sun Fire V245, HP-UX-rp3440/rx6600/rx3600/rx7640, Pentium PCs, Oracle 10g, Perl, CVS, SVN, Laser Jet Printers.

Confidential, Fort Washington, PA

Application Support/Maintenances

Responsibilities:

• Installing and configuration of Sun Solaris 8 9 & 10 and red hat Linux Server.
• Configure IBM RS/6000 for production, staging and test environments.
• Use tumbleweed tool for secure transport, centralized administration, configuration, and monitoring of file transfer activity and applications
• Migrated sun servers from Solaris 8 to Solaris 10. Worked with tumbleweed tool.
• Involved in Datacenter consolidation (moved servers from OH to NY data center.)
• Wrote Unix Shell Scripts for Automate various routine jobs Backup using ADSM. Performance monitoring.
• Installation and configuration of Veritas Storage Foundation Suite, Volume Manager, Cluster Servers & Veritas File systems (Vxfs).
• Omni Backup, Netbackup and TSM Backup for backup administration.
• Installation of SSH and configuration of keys bases authentication.
• Integrating UNIX file systems using packages like SAMBA. Setting up printers on UNIX / NT machines to work seamlessly across platforms.
• Installed and Administered VMware ESX 3.5 in multi-cluster environment with 8 physical nodes in each cluster
• Installed and maintained several UNIX, Linux and Windows servers on virtual environment.
• Build Task Plans for upcoming changes and s/w deployments.
• Closely Working with DBA teams to manage application DB and backups.
• Monitor Day-Day tickets using Remedy ticketing tool.
• Assisting Development team to provide the information and troubleshooting.
• Installed, configured & upgraded WAS 6.0, 6.1 and provided extensive support in code deploy, change management and application level troubleshooting for the Dev, Test, Pre-Prod & Production environment.
• Deployed applications (EAR/WAR) files on multiple Servers/Clusters and maintained Load balancing Using BIG IP, High availability and Failover functionality
• Installation of Web sphere, upgraded to service pack updates, installed IBM patches, configuring and creation new admin & managed servers, start & stop Web sphere server
• Have very good Operational experience supporting large scaleEnvironments.
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Working closely with Vendors on Hardware Problems, software fixes.
• Administration of NFS, NIS, DNS, Samba and Send mail servers.
• Provided 24X7 support for large number Production, Development and Test systems.
• Co-coordinating with Sun Support engineers to resolve high priority issues.
• Worked with GIT to connect to Repository.
• Administered security, users, disks, groups’ administration, File Sharing Permissions, daily backup and restore operations, networking service, performance, and resource monitoring.
• Initiating Backups on daily basis and monitoring the scheduled backups.

Environment: Solaris 8 9 & 10, Red Hat Enterprise Linux 3/4/5, Sun Fire 15K, Sun Fire 6800, V420R, E220R, E450, VERITAS Foundation Suite, VERITAS Volume Manager, Tumbleweed Tool, Tivoli Storage Manager 5.x, VERITAS Cluster Servers, VERITAS Net backup, BIG IP,GIT, Web Sphere and Remedy.

Confidential, Nashville, TN

Unix/Linux system Administrator

Responsibilities:

• Responsible for installation, configuration and administration of Sun Solaris 9 and Red Hat Enterprise Linux on x86 architecture.
• Created mount points for Server directories, and mounted directories on the Servers.
• Creating Jumpstart image for Solaris 9 and 10 and configuring new Linux servers.
• Managed Backup and recovery using VERITAS Netback up tool
• Data Centers support contains 200 + Linux/unix based servers.
• Setup and maintained NFS, NIS, and TCP/IP network, configured the systems for TCP/IP Networking with the existing LAN, setting up SSH and SCP features between SUN systems and other UNIX hosts.
• Maintained network and data security, maintained security compliance policies on the OS for SOX and internal audits.
• Maintained DNS, LDAP Servers, Configured NIM, NFS, NIS and standardization of all the systems.
• Responsible for performing upgrades and applying patches as required.
• Maintain Linux DHCP, File servers
• Involved extensively in trouble shooting the issues by finding out root causes analyzing core dumps and resolving system crashes
• Wrote shell scripts in automating admin tasks like customizing user environment, performance monitoring, system conditions, failovers, disk utilizations etc.,
• Installation, configuration and troubleshooting Web logic, Clear case, Apache Tomcat.
• Installed and Administered VERITAS volume manager 3.5 on Ultra Sparc E250, E450, Sun E3000 machines and configured RAID 0, RAID 1, RAID 0+1 and RAID 5. Created vmdisks, plexes, and volumes using the volume manager according to the requirements. Replaced failed disks using vxdiskadm.
• Provided support for multi-path Fiber Channel storage systems, as well as Solaris servers configured with multiple Fiber Channel (FC) Host Bus Adapters (HBA) on a Storage Area Network (SAN).
• Administered security, users, disks, groups’ administration, File Sharing Permissions, daily backup and restore operations, networking service, performance, and resource monitoring.
• Involved in problem tracing, performance tuning, trouble shooting of problems related to the applications deployed on WebLogic Application Server.
• Generated reports to show the trends of resource utilization user/CPU/network load.
• Managed file permissions & ownership for important directories & files.
• Support/install/upgrade TSM on Unix Servers.
• Performed Systems monitoring, and alert system, system backups, tape archives, Implemented, and maintained Backup strategy with automated scripts tar, cpio.
• Configuration and troubleshooting - LAN and TCP/IP issues.

Environment: Sun Solaris 9/10 Red Hat Linux 4, Dell Power Edge 1800/1850/2850 servers, Intel servers, Sun Ultra Enterprise 4500, Sun Enterprise 450, Sun Enterprise 420R, Sun Enterprise 250, Sun Fire V20z servers, Dell PCs & Compaq PCs, VERITAS Volume Manager, VERITAS Netback up 5.0, Sybase 11.5.1, Perl Scripting, NIS, NFS, LDAP server, Weblogic, Apache Tomcat, EMC Storage SAN.

Confidential

System Administrator

Responsibilities:

• Installed, configured and administered Solaris 8, Linux (Red Hat 6.0) and Windows NT in the network system consisting of heterogeneous network equipped with SPARC, HP global Infinity and IBM PC Compatibles.
• Monitor the usage of cpu, load on cpu, checking the load on memory and various security aspects of the systems configuring the network printers.
• Created New Slices, New File Systems, Mounting File Systems, Unmounting File Systems and Huge Slices using Daisy Chains
• Written shell scripts for day to day jobs like temporary file removal, resource statistics, Script for exporting ORACLE user backup
• Configured NFS Servers, NIS+ Servers, NIS+ Clients, Diskless 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.
• Monitor bad user logins and unauthorized users.
• Creation of database roles and privileges based on the application user.
• Performed routine activities like user creation, permission granting activities
• Installed and configured outlook as MS Exchange client, Linux system as Mail Server.
• Configured NFS, remote mounts and remote access of file systems.
• Configured, monitored and maintained the NFS services.
• Auto-mounted directories between the clients as required by the users.
• Configured NIS and DNS clients to the existing networks.
• Performance and Load Testing of the Existing Web Applications.
• 24x7 support to the Production Test Servers and storage components onsite
• Performing IT infrastructure and System administration routine activities
• Did problem resolution for Application development team, Informix DBA, and end users.

Environment: Sun Solaris 8 UNIX,linux, ORACLE, C, Line Printers and HP global Line Servers, Windows /xp, oracle .