SUMMARY

• 8+ years of system administrator experience in multiplatform Unix and Linux environments, with hands - on expertise in networking, scripting, and systems integration.
• Excellent technical skills, with strong knowledge of current and emerging technologies.
• Strong communication abilities, with history of providing on-site support to wide range of clients.
• Experience working in fast-paced, deadline-oriented environments.
• Solid background in Engineering, Operations support, Service Assurance, Capacity planning, and Security.
• Supported 800+ Linux/Aix/Cent OS/ SUSE Linux production servers with different applications

TECHNICAL SKILLS

Programming: Shell, ksh, Bash, Perl, SQL

OS: Linux, UNIX, Solaris, HP UX, Windows 2000/NT/XP

RDBMS: Oracle 9i/10g/11g,Mysql

Middle Ware: Oracle Web logic Server 10.3.5, Web sphere ND V7.0, JBoss EAP 5.1

ERP: Oracle 11i Apps DBA, SAP Ecc 6.0

Backups: Tsm Backup, Tape Backup, Online & Offline Backups

Monitoring Tools: Nagios 2.0, Nimsoft 5.0,Solar Winds APM, BMC Impact Manager

Log Tools: Splunk 5.x

Virtualization: VMware (ESX, GSX, Workstation), KVM, RHEV, Solaris Zones.

High Availability: Sun Cluster, Red Hat Cluster, Big IP F5, Heartbeat 2.

Hardware: HP, Confidential, Dell and SUN chassis and blades.

Coding: Perl, Shell, Git, Sed, Awk, Make, Subversion, SQL, HTML, CSS.

Monitoring Products: CFEngine, Openview, Insight Manager, SNMP, Sysstat, Big Brother, OpenNMS.

Web and Middle Services: Apache, Tomcat, Wordpress, Jboss, Websphere,Weblogic

Network Services: DNS/Bind, NFS, IPV6, TSM, LDAP, SSH, DHCP, TFTP, iSCSI.

Databases: MySQL, PostgreSQL, SQLite, DB2, Oracle.

Email Services: Postfix, Sendmail, SpamAssassin.

Security Products: SELinux, Iptables, Tcpdump, Wireshark, Snort, Ipfilter, SSL.

PROFESSIONAL EXPERIENCE:

Confidential, St.Louis,MO

Sr. Systems Engineer

Responsibilities:

• Build RHEL 5.6,5.7,6.2 on HP Proliant BL460c G7,DL360 G6 Hp blades system with ILOM
• Installation and configuration of Red Hat Linux 5.x on systems for various applications like DRUM(Docsis reporting, Utilization & Measurement),IPDR, Sensage, Sandvine Servers.
• Creating multiple Kickstart Config files for various Application server installations and using them for multiple Linux installations.
• On boarding CMTS Arris c4,E6k,Cisco UBR 10k for IPDR (Internet protocol Detail Record) servers to enable cable metering.
• Configuring CMTS(Cable Modem Termination System), Docsis 2,0,3,0 based on KMA to enable IPDR export to collectors.
• Configure Sigma AMP Collectors running on RHEL 5.6 to receive ipdr from CMTS using the SIGMA AMP (Active Mediation Platform) to enable the work flow for both IPDR/XML and IPDR/SP (Streaming Protocol) based work flow for CISCO & ARRIS cmts .
• Developed load scripts to export the IPDR records from collectors to Teradata Data base based on the interval set in the corn job.
• Trouble shoot CMTS (Arris,Cisco), Sigma Collectors to make sure that IPDR data is flowing in to Teradata database.
• Update,Register,Licensing red hat servers with Red hat service central to get the automatic updates for packages.
• Creating yum repositories for getting packages updated based on Application requirements.
• Deployment of ssh keys for various servers to monitor the servers Hardware,Cpu,Memory,Disk Space from Solar winds APM tool.
• Experience building and maintaining an AWS topology, EC2,VPC,EBS,S3, Cloud Front
• Adding multiple users,groups,permissions,SeLinux security policies based on requirements from Application Developers.
• Configuring SUDO file to give permissions to users,Group to certain application based commands to perform specific task on both solaris SUN O/S 5.9 and Red Hat Linux 5.x Machines.
• Transition 150 Red hat Enterprise Linux servers from Application team to Unix team as a part of COLO transition like creating users,group, register the servers with RHN, configure sudo file, configuring rsyslog, snmpd.conf,yum configuration, yum repository creation,Configuring squid proxy,Http proxy
• Installation and configuration of Splunk 5.x search heads,Indexers and splunk forwarders to forward various logs on Splunk Indexers running on Linux servers. Configuring alerts on search heads for specific search requirements. Creating hot and cold buckets for indexer to store n/w logs,App logs,Router logs
• Worked on remedy tickets for day to day production issues on Linux and solaris servers
• Monitoring and working Remedy tickets and tasks based on request
• Configures IPTABLES and SELINUX contexts for files and directories.
• Installs firmware upgrades, kernel patches, systems configuration, performance tuning on Linux Systems.
• Configuration of LUNs assigned by the storage team, and manages volumes using Logical Volume Manager (LVM) in Linux and Veritas Volume Manager.
• Administrates EXT3, EXT4 and Vxfs Filesystems.
• Performed online remote host migration of data using RSYNC tool.
• Managed the NFS and Auto mount Services.
• Deployed and managed a Red Hat Network Satellite server
• Troubleshooting and problem resolution of system performance and networking.
• Manages systems’ routine backup, scheduling jobs and enabling CRON.
• Experience in installing, upgrading and configuring Red Hat Linux 4.x, 5.x, 6.x using PXE Kick Start Servers and interactive installation
• Assisted in designing, development and architecture of Hadoop and HBase systems.
• Coordinated with technical teams for installation of Hadoop and third related applications on systems.
• Formulated procedures for planning and execution of system upgrades for all existing Hadoop clusters.
• Supported technical team members for automation, installation and configuration tasks.
• Suggested improvement processes for all process automation scripts and tasks.
• Provided technical assistance for configuration, administration and monitoring of Hadoop clusters.
• BigIP F5 load balancers to provide uninterrupted service to customers using Splunk Indexers/Search heads
• Conducted detailed analysis of system and application architecture components as per functional requirements.
• Participated in evaluation and selection of new technologies to support system efficiency.
• Installs, configures, and manages Servers within a cluster using Red Hat Clustering Software.
• Installs, configures, and Manages Servers within a Veritas Clustering Software.
• Builds the VMware infrastructure from the scratch. Installed ESXI hosts, Shared Storage SAN

Confidential, Nashville-TN

Sr. Linux Systems Engineer

Responsibilities:

• Installation and configuration of Dell Power Edge 2950 server 2x Quad-Core L5420 2.5GHz with RHEL 6/Cent O/S 6 for Dev and Conversion environments.
• Installation, Configuration, Administration of webSphere Application server (WAS v7.0) On RHEL 6.
• Tuning of JVM’s (32/64 Bit) as per requirement from Development team to accommodate and deploy additional applications, clustering of nodes.
• Validation of pre build deployment,
• Installed and configured Apache/2.0.63 on RHEL 6, Integrated Apache Web Server to communicate with Web Sphere (WAS V7.0).
• Made changes to PluginConfig.XML in Apache web Server to redirect request to Application server.
• Installed Web Sphere 7 Plug-in 64 bit on RHEL5,6 machines
• Installation of site minder R12 Policy Server to enforce rules driven for Web Sphere App servers (WAS V7.0)
• Configure Site minder agent on Apache server to redirect the request to Site minder policy server and there by accessing the Web Sphere Network Deployment Server based on site minder driven rules
• Developed shell scripts to automate file transfer, batch jobs for, Testing,Dev,Uat,Prod Application servers running on Red Hat Enterprise Linux 5.5,6
• Automated the Deployment of .War, .Jar, .ear files on PROD/DEV/TESTING/UAT environments with multiple applications like front office/Back office/focm/Case Maintenance/Conv/Date Roll etc.....
• Developed the shell scripts to change the clock offset properties on different applications on multiple environments based on business requirements
• Create users,Groups,permissisons for Dev/Prod/Uat/Testing
• Improved manageability of Linux installations through consolidation of all Linux platforms to Red Hat Enterpise Linux, deployment of Zabbix and Red Hat Satellite Server for management and monitoring,
• DM Multipath Configuration and Administration on Rhel 5.5 Server
• Deploying and upgrading RHEL 5.6 servers clusters using HA add-on and Red hat Global file system
• Download/Install rpm's by integrating our local server with Red Hat Satellite Server (RHN)
• Developed Perl, Shell Scripts to take back up of entire applications Environment in web Sphere (WAS 7.0) before making changes in date roll in Oracle db 11G.
• Administration of UNIX infrastructure composed of Linux, AIX, HP-UX, Solaris and Tru64 servers.
• Transformation of naming service infrastructure from NIS to LDAP using FreeIPA (Red Hat Directory Server + Kerberos + SLAPI-NIS)
• Full management of SAN environment composed of Confidential DS4000 storage subsystems and 4 node Confidential SAN Volume Controller cluster. SAN has more than 200 terabytes of data.
• Management of Confidential Tivoli Storage Manager (TSM) backup server.
• Management of Brocade SAN switches in dual fabric configuration.
• Automation of backup procedures for various appliances ( Confidential SVC, Brocade SAN switches, etc).
• Automated installation of multiple systems with Kick start,PXE file using Anaconda program
• Tuning of kernel parameters to improve Memory, Cpu, I/O performance for Capacity planning
• Administration of monitoring infrastructure consisting of Nagios server with Centreon as web interface for configuration and display of performance data.
• AIX 5x and 6x installation, up gradation, migration and troubleshooting.
• Bare metal recovery of Linux servers for Disaster testing.
• Upgrading firmware of managed machines, devices and HMC.
• Working experience of managing, troubleshooting Confidential P4, P5 and P6 series hardware.
• Lead datacenter migration in large midrange environment.
• Extensive experience in micro Partitioning and (LPAR, DLPAR).
• Experience of creating standard and Virtual I/O client LPAR using HMC.
• Knowledge and hand on experience on Advanced Power5 and Power6 Virtualization.
• Partitioning and management Virtual I/O servers and clients
• Provide supports for (SAP, Web Sphere, ERP Lawson, Demantra, Oracle, Db2, TWS, )
• Supported huge partitioning environment with 45+ Confidential p5-570 managed machine HMC.
• Expertise in creating and managing Dual Virtual I/O servers with SEA, MPIO and LNK aggregation.
• Knowledge and hands on experience installing and configuring LINUX.
• Experience of STORIX 6.1.1.2 for backup and restore OS images on Confidential p5/p6 servers.
• Configuration SAN, SVC with Confidential Enterprise Storage Server (ESS 800, DS4000)
• Install, configure, manage, NIM server and installing clients using NIM recourses.
• SAN Storage, Disk Management (LVM)
• Experience of installing and upgrading HACMP and configuring cluster with different RG
• Configuring and troubleshooting TCPIP network.
• Configuration YUM repository for Consolidation of RPM Packages, Mgmt of Yum repositories
• Registering and syncing Local servers with RHN (Red Hat Satellite Server)
• Switch/Storage Migration, storage allocation, IO performance tuning.
• Installation, Configuration, Administration of Mysql server in a LAMP environment
• Coordinate with vendors, development, business partners and escalation support teams
• Self-motivated team player, able to set priorities and manage to deadlines
• Strong desire to learn and work with multiple applications, tools and technologies.
• Good communication skills & well versed with group work.
• Excellent analytical and troubleshooting skills; flexibility; ability to plan and organize; responsiveness and creativity.
• Leveraging of Kickstart/PXE for rapid provisioning of new servers.
• Demonstrate leadership skills which include, Change Management, Teamwork, Diversity, integrity
• Advanced experience with Red Hat Enterprise Linux, Fedora, and CentOS. Familiarity
• Ability to tune Linux systems based on performance, memory usage, file system and device I/O, and threading or multi-processing
• Installation, Configuration, Administration of SUSE Linux 10 .
• Administering Novell SUSE Linux 10 super computer cluster and storage
• Experience automating installations, configuration management, and other administration tasks for thousands of machines

Confidential, Brentwood, TN

Linux & Monitoring Administrator

Responsibilities:

• Deployment, Administration, Installation, Configuration of management technologies (monitoring & capacity) to infrastructure systems
• Configuration of monitoring and capacity technology for monitoring of applications and infrastructure
• Develop SLA reports relating to systems availability related to monitoring
• Configuration of Nimsoft Monitoring tool to monitor RHEL 5.5,AIX 5.x,6.1,Windows 08R2,NT,XP servers, and the applications running on them
• Working on change tickets in BMC REMEDY Tools to setup Monitoring alerts on Application(CLINVIEW/CLINDOC,ALLSCRIPTS,HMS,AMR,ALLSCRIPTS,MCKESSON) and non application(FALCONSTER) running on Linux/Aix/windows servers.
• Installation of Hubs/robots on Linux/Aix/Windows servers for monitoring using Nimbus monitoring tool.
• Develop shell scripts for Nimbus robot installations, modify shell script for Nimbus agent installation in various Linux/Aix systems based on requirement
• Deploying LINUX/AIX and Windows Standard packages to enable Controller probe to facilitate communication between robot and hub
• Making changes to robot configuration files in Linux/Aix systems to communicate with right hub.
• Updating the versions of robots, std Linux/Aix packages to communicate with the hub
• Quality of Service (QOS) is configured to collect data that is stored in the Nimsoft database for reporting and trend analysis.
• Configuring NEW SLA’s for different VM’s, adding the servers to the SLO to analyze the ping monitoring and server availability trends for a period of one month to one year
• Deployment and installation of management technologies (monitoring & capacity) to infrastructure systems
• Installed and configured Jboss Application servers for DEV, QA and PROD systems
• Deployed applications from Admin Console of Jboss Eap 5.1 as well as done the hot deployment
• Tuned OS parameters like Swap and virtual Memory settings to improve the Jboss performance
• Deploy BPA Capacity Agent rpm/Nimsoft.exe packages on LINUX/AIX/WINDOWS systems to predict future disk space/memory requirements.
• Trouble shoot and maintenance of capacity agents on Linux/AIX systems, resolving issues related to agents, when the agent not able to pull the CPU/MEMORY/DISK I/O trends in Capacity agents tools namely perceiver/Discoverer/surveyor tools.
• Resolved issues with Bpa agents on AIX/Linux systems to communicate with Capacity tools (Discoverer, perceiver, surveyor)
• Running the agent scripts based on requirement for Linux/AIX systems.
• Configure Profiles, Connections on Services probe to monitor ORACLE 10g,11g data base,
• Tables, Table Spaces with Large amount of OLTP transactions.
• Deploy Probes on Emc San Storage Arrays to monitor Data Store’s, Lun’s, Esx Hosts, VM’s running

Confidential, IL

Linux & VMware System Administrator

Responsibilities:

• Managed Red Hat Linux servers for production infrastructure.
• Worked on tickets related to customer requests for additional disk space, network issues
• Administered Nagios server to monitor all Linux and UNIX servers.
• Provided secondary administration support for various network appliances including Cisco switches & firewalls,
• Monitor virtual machines running on VMware ESX 4.0 with vsphere client v6
• Deploy a virtual machine from template in the V sphere Client
• Monitored server and application performance & tuning via various stat commands (top, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc.
• Installing VMware Esx 4.0 on different Confidential M2 physical machines
• Creating VLAN tags for different subnets within the network
• Create Puppet automation to manage configuration and deployment of new applications
• Experience with Load Balancer F5 big Ip LTM V9.X
• Installing Esx host as per build sheet requirements and creating vm’s and data stores on the hosts
• Working on channel bonding for Ethernet cards to maintain redundancy

Technology used: Red hat enterprise Linux 5.5, VMWARE ESX 4.0 Hypervisor

Confidential, Tampa, FL

Linux and Unix Systems administrator

Responsibilities:

• IR Fixing - As per request form User and communicating with the user.
• All standard processes followed across the board for SC systems - helpdesk, CMIS Web Enterprises
• Backup and Archival of Systems/ databases where ever applicable.
• Handle user inquiry, investigations, and suggest workarounds to overcome issues affecting day-to-day work of the user.
• Clean of Systems to enable availability of Space whenever required.
• Ensuring availability of legacy test environments / systems for conducting tests of any interfaces involving SAP and LEGACY communication
• Participating in testing of interfaces between SAP and LEGACY from the Legacy Side and providing inputs whenever required.
• Install, Configuration, Administration of Suse Linux 9 servers.
• Developing scripts/ utilities to enhance a process in a legacy system whenever applicable.
• WLI Monitoring for recurring issues.
• Supported & Installed Linux servers and troubleshooting the machine, preparing Documentation of each support activities.
• Creating User, Creating permission, Configuring Printers, network Printers, Scheduling Backups. Scripting, creating swap, Raid configuration & LVM.
• Worked on Red Hat cluster Suite. GRID and Cloud computing and Cloud Storage.
• Production Support & troubleshooting of the Servers.
• Backup & Restoration of the servers. Automated the process while doing shutdown and startup.
• Configured FTP, Telnet, sFTP, SSH, iptables, Samba for the servers.
• User creation, assigned quota, Wrote script to change the root password for all Unix System, script for user creation, user password updating, root password change for all system, Generating output from all server machine to and validate security issues.
• Enabled quota for the users, Logical Volume Manager, Extending Volumes. RAID configuration
• Configure Backups using crontab, Updated Patches, Users Creation, and Assigning Roles, assigning sudoers, RPM, LVM creation & extending.
• Migrated legacy systems which are 0n Solaris 2.5.1 to red hat enterprise Linux 5.0
• Migration of HP UX Servers 11.0 to red hat enterprise Linux 5.0
• Up gradation of sap r/3 servers from red hat 4.0 to rhel 5.0
• Installation,configuration,administration of MYSQL 5.1 on RHEL 5.5 servers
• Migration of 50+ HP UX Servers 11.0 to red hat enterprise Linux 5.0 for project north services
• Configured Kick start Files installed RPM's & Packages, Installing Patches.
• Created User Permission and supporting all Applications and different version of UNIX, Web logic, Oracle, Web sphere, SAP SRM, Updating the intranet for future s.
• Configured Squid, DNS,DHCP, NFS, SSHD, Send mail, Dovecot, and Imap
• Installation, Configuration, Administration & troubleshooting of APACHE web server 2.1.3
• Experience in installing/configuring Linux/Solaris servers on VMware Esx 4.0
• Supported Web sphere servers and deployed applications
• Supported and administered sap R/3,SRM production servers running on RHEL 5.0, centos5.5
• Designed and administrated server consolidation program through use of VMware ESX server and VMware Virtual Center. I wrote the strategy document, designed and administrated the environment. The environment has grown to over 45 ESX hosts and 750 Virtual machines production environment. I have also designed the performance monitoring processes and improved disaster recovery processes to utilize virtualization benefits. I was instrumental to setting best practice process and procedures, and utilized PowerCli and Power Shell scripting to maximize administrative efforts.
• Juniper Devices - SRX 210/240 Firewalls, EX3200/4200 Switches, J 2350/4350/6350 Routers, Routing protocols and Net screen SSG 5/20/140/320 Firewalls, Virtual Private Networks
• Cisco Devices - Catalyst 2960/3750/6500 Switches, 1800/2600/3800 Routers, and Cisco ASA/PIX Firewalls
• Security hardening by Removing Unnecessary Software Packages (RPMs), Closing Network Ports and Disabling Run level System Services, Restricting System Access from Servers and Networks, Enabling Password Aging, Restricting Direct Login Access for System and Shared Accounts.
• Responsible for updating and maintaining internal network monitoring system for 350+ Cisco networking devices that exist on Black & Veatch’s network infrastructure.
• Updated existing and created new networking documentation that included hardware inventory spreadsheets, IP addressing documentation, and Visio network diagrams.
• Configured YUM repository to update and manage rpm packages and upgrade system

Technology Used: Red hat enterprise Linux 5.0, Sun Solaris 2.5.1, SunSparc Server E450, HP UX Server 11.0, VMware, HTTP Gateway Server (egw01), Cisco, Juniper, Web sphere ND Server V6.0, Netscape Enterprise Server 3.5.1,, Xelus Plan V 4.5, Oracle Data Base10g/9i, SAP 6.0 s/w

Confidential

Systems Administrator

Responsibilities:

• Administer, Secure and support Linux Systems running oracle data base.
• Assist in oracle database maintenance.
• Networking on Red hat enterprise Linux Server side setup.
• Configuration and basic administration of common networking services: DNS, NIS, Apache, SMB, DHCP, send mail, FTP, Squid.
• Configuration of CVS Server (concurrent version system), administering users and groups.
• Uploading modules in to CVS Server.
• Under gone RHEL-5 from Red Hat Certified Partner.
• Configured send mail, SNMP, NTP, DNS, SSH, SSL, NIS and NFS services for mail, monitoring, networking and file sharing purposes.
• Performed various tasks like installing, administering, monitoring and troubleshooting RHEL 2.x/3.x,Red Hat Linux 7
• Implemented RAID techniques and created Disk groups, volumes and plexes using VERITAS Volume Manager 4.1. Managed root disk mirroring using Solstice Disk suite 4.2.1.
• Performed user and group administration. Executed RBAC and ACL's by creating roles, rights and policies for providing privileges to selective users for administration. Scheduled various repetitive jobs using cron facility.
• Worked on setting up NIS including configuration and troubleshooting of master, slave servers and setup of clients.
• Performed setup and configuration of Install Server, Configuration Server and Boot Server for Jumpstart process.
• Implemented Hardware configuration like mounting servers on racks, cabling, power distribution, adding/replacing hardware components.
• Periodically performed performance tuning, kernel parameter tuning and swap space allocation to keep systems optical. Also patched the servers regularly to keep updated with latest bug fixes.
• Automated backup tasks for root file systems to tapes using ufsdump, tar and cpio services. Also responsible for scheduling of backups by using VERITAS Netback up 4.5.
• Worked on tasks like creating LUNs, formatting disks, replacing failed disks, assigning storage to servers.
• Troubleshooting and fixing day to day problems related to laptops and desktops.
• Prepared technical documentation for all set up and configuration steps on UNIX environment.
• Worked with dynamic group of administrators and shared helpdesk duties.
• Configured Linux Kick start and Custom Jumpstart services on multiple servers for network installation.
• Implemented services like NFS, Auto-mount and SAMBA for file sharing across various platforms.
• Used shell scripting for day-to-day administration of systems by generating daily server status report via email, alert scripts to identify system malfunction.
• Configured RAID 1+0 and RAID 5 using VxVM and LVM
• Acted as liaison between various development teams, DBAs and application teams to resolve issues and provide support.
• Implemented NFS and Samba environments to share resources between Red Hat and Windows environments.
• Implemented tasks like creating new mount points, formatting disks, running fsck checks and partitioning of disks. Configured LUN space for SAN storage, experience with SAN storage device, driver protocols
• Regular user administration like adding, deleting, locking users, changing passwords and permissions. Also implemented sudo and other system hardening schemes.
• Configured UNIX services like FTP, and NFS. Also setup public-private key authentication to automate system process login within servers.
• Performed hardware related configurations like memory upgrades and racking servers.
• Configured Oracle 9i database servers and created database instances.
• Created capacity planning document by analyzing the existing systems and calculating a five year growth plan.
• Supported Confidential AIX 6.1 servers on power6 hardware
• Performed extensive scripting for the automation of administration tasks like old file deletion, log rotation, system NIC status monitoring using ksh, and bash.
• Providing technical support to systems and operations group for day to day issues.
• Web Technologies Tomcat, Apache HTTP Server, JSP, Servlets, ASP, JDBC,java/j2ee
• Install and manage Tomcat, Apache Web servers.
• Experience in web sphere commerce server