SUMMARY

• System Engineer with Over 7 years of IT experience in Administration of various Linux and UNIX flavors like Red Hat - Linux, SUSE Linux, and CentOS Confidential -AIX and Windows environments.
• Experience in creating the company's DevOps strategy in a mix environment of Linux (RHEL, CENTOS) servers along with creating and implementing a cloud strategy based on Amazon Web Services.
• Worked in infrastructure team on installation, configuration and administration of AIX 4.3/5.1/5.2/5.3/6.1, Red Hat Linux 8/9, RHEL 3.x/4.x/5.x, Red Hat Satellite 6, OEL 4/5.x and SUSE Linux 10.x/11.
• Day to day job included but not limited to handling tickets, Monitoring, Troubleshooting and maintenance.
• Experience working with AdvancedPuppetEnterprise (2.x/3.x) focusing on infrastructure and development.
• Developed & DeployedPuppetmodules for use in Development, QA, & Production environments.
• Expert in Kickstart, Jumpstart and NIM installation methods for RHEL and Confidential -AIX.
• Created and maintained user accounts, profiles, security rights, disk space and process monitoring.
• Worked and utilizedpuppethierarchy files, facts, and global variables.
• Worked on installation, maintenance and upgrade of PuppetMasters, Agents, and Databases.
• 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 and configuration of Web hosting administration such as HTTP, FTP, SSH, & RSH
• Experienced in working with SAN hardware from vendors including EMC (Symmetrix and CLARiiON) and Hitachi.
• Worked on cloud-based servers like AWS, AZURE and Rackspace.
• Created instances in AWS and assisted on migration from data center to AWS.
• Supported WebSphere Application Server, Confidential HTTP/ Apache Web Servers in AIX environment for various projects.
• Patched Unix and Linux Servers.
• 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.
• Experienced with using Oracle RAC for clustering and high availability in Oracle database environments.
• Expert in Installing, configuring and maintaining apache/tomcat, samba & send mail, Web Sphere Application Servers.
• Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio
• Excellent scripting skills in UNIX Shell, Perl, python and Ruby.
• Performed server consolidation and virtualization using HPSA VSphere ESX 3.5/4/4.1; created VM’s on Virtual Center server and installed guest OS using Virtual Infrastructure client.
• Provided Troubleshooting and Customer support in critical 24x7 production and development environments.

TECHNICAL SKILLS

Operating Systems: Linux (RedHat 5.x,6.x SUSE 8), Confidential AIX 5L(5.1,5.2,5.3), Windows 2000/NT4.0,windows 95/98/ME/XP, HPSA Sphere ESX 2.x,3, KVM

Hardware: Confidential RS/6000, pSeries 520, 550, 570, 575, 590, 595, 650, 630,670, M80, S80, H70 and H80, z/VM-9 series, Confidential ESS (Enterprise Storage Server), DS8000, EMC VNX, Confidential 3494, 3583 Automated Tape Library, Brocade, SUN Enterprise 450, SunFire 4500,V880, V480,E420R,E450,E250, Confidential 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: Websphere Application Server (WAS)3.5,4.0, Netscape/iPlanet Server, MQSeries, WebLogic, JBoss, Server, Confidential HTTP Server, HTML, DHTML, XML, Java Script, JSP, Servlets, EJB, Puppet

Networking: TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP

RDBMS: Confidential UDB2, Oracle 7.x/8.0/9i, MS-SQL Server 7.0/6.5 and MS-Access 97/95

Programming Languages: C, C++, Java, Servlets, Jsp, EJB,VB, JavaScript, HTML, Python, Perl, Ruby and Shell programming

Applications: HACMP, Samba, Tivoli (TSM), Veritas, NetBackup, Veritas Volume Manager, LVM

Cloud services: AWS (EC2/SQS/SNS/S3/IAM/ELB)

Config Management tools: Puppet/Chef

Build Tools/ CI servers: Maven, Ant, Jenkins, Build Forge and bamboo.

PROFESSIONAL EXPERIENCE

Confidential, Troy, MI

System Engineer/ DevOps

Responsibilities:

• Worked on installation, configuration and maintenance Debian/Redhat, CentOS and Suse Servers at multiple Data Centers.
• Configured RedHat Kickstart for installing multiple production servers.
• Installation, Configuration and administration of VMware.
• Deploy and monitor scalable infrastructure on Amazon web services (AWS) & configuration management using puppet.
• Designed Puppet Modules to manage configurations and automate installation process.
• Experience working with production servers at multiple data centers.
• Worked on Physical to Cloud Migration in AWS.
• Experience in migration of consumer data from one production server to another production server over the network with the help of Bash and Perl scripting.
• Used Puppet for Monitoring system and automation.
• Installed and configured monitoring tools Nagios for monitoring the network bandwidth and the hard drives status.
• Developed and supported the Red Hat Enterprise Linux based infrastructure in the cloud environment.
• Experience in AWS, which included managing application in the cloud and creating instances.
• Developed automation scripting inPython (core)usingPuppetto deploy and manage Java applications across Linux servers.
• Worked on Version controller like GIT and integration tools: Jenkins
• Logged events from forced crash dumps and troubleshoot server issues.
• Configured yum repository server for installing packages from a centralized server.
• Installed Fuse to mount the keys on every DebianProduction Server for password-less authentication.
• Experience with Configuration Management Tools (PUPPET, CHEF, Ansible).
• Installed and configured DCHP server to give IP leases to production servers.
• Management of RedHat Linux user accounts, groups, directories and file permissions.
• Applied the Clustering Topology that meets High Availability and Failover requirement for performance and functionality.
• Installation, Configuration and administration of DNS, LDAP, NFS, NIS, NIS+ andSendmail on Redhat Linux/Debian Servers.
• Configured, managed ESX VM’s with virtual center and VI client.
• Performance monitoring using Sar, Iostat, VMstat and MPstaton servers and also logged to munin monitoring tool for graphical view.
• Installed packages with yum and rpm.
• Installation and configuration of PostgresSQL database on RedHat/Debian Servers.
• Performed Disk management with the help of LVM (Logical Volume Manager).
• Configuration and Administration of Apache Web Server and SSL.
• Created and maintained network users, user environment, directories, and security.
• Provide the support of building the server, patching, user administration tasks, deployment, software installation, performance tuning and troubleshooting and KVM.
• Provided 24/7 on call support on Linux Production Servers. Responsible for maintaining security on Redhat Linux.

Environment: Debian and RedhatLinux and SUSE Linux, KVM, VMWAREIBM blade servers, Bladelogic, Confidential DS8300 SAN, Websphere 5.x/6.x, Apache 1.2/1.3/2.x, Logical Volume Manager, Veritasnetbackup 5.x/6.0, SAN Multipathing (MPIO, HDLM, Powerpath), VM ESX 3.x/2.x, RHEL 5.x/4.x and Windows Server Environment. Python, Puppet, GIT, SVN

Confidential, Dublin, OH

System Engineer/ DevOps Engineer

Responsibilities:

• Installation, testing, tuning, upgrading, troubleshooting server issues and patching on RHEL 4.x, 5.x, 6.x, Cent OS, Ubuntu and AIX
• Performed support role for applications on mission critical Enterprise Networks and Multi-server environments.
• Created and cloned Linux virtual machines using VMware Virtual Client and migrating servers across ESX hosts.
• Worked on various DevOps tools like Puppet, SVN and Maven.
• Deployed Puppet for configuration management to existing infrastructures.
• Used Puppet for server configuration across distributed Virtual Server Environment, performance enhancement and tuning for Tomcat, Apache, and JBoss servers on RHEL 6 virtual instances.
• Worked on installation of RHEL 5.8/6.3 virtual machines on ESX 4.1 servers.
• Worked on VMware vCenter 4.1 deployments, VMotion setup for VMware ESX 4.1 servers and VMware tools upgrade.
• Installed and configured networks on various servers for RHEL and AIX including DNS, DHCP, and Apache etc.
• Installed Red Hat Network Satellite client version on RHEL servers including recommended push patches to the client servers from satellite wed UI.
• Performed Kernel tuning to improve performance of applications such as Oracle, WebLogic etc.
• Provided Support for various servers running Oracle 10g/11g databases in RAC configuration and running on OEL 5.5/5.7.
• Monitored system activities like CPU, Memory, Disk and Swap space usages to avoid any performance issues.
• Created shell scripting using bash/Perl via text processing tools such as GREP/SED/AWK for automation.
• Performed data migration between various UNIX/LINUX server and Windows Servers.
• Performed SAN storage migration from EMC DMX to EMC VMAX.
• Responsible for installation and upgrade of patches and packages using RPM & YUM.
• Grouped with database administration staff to make sure best performance of databases.
• Supervised junior team members to support production web environment.

Environment: RHEL4/5/6, Oracle 10g/11g, Solaris 9, Solaris 10, Virtual Private Cloud VMware Client and migrating servers, AIX, WebLogic, GREP/SED/AWK, EMC Avamar, EMC DMX/ VMAX, vCenter 4.1, ESX 4.1, OEL 5.5/5.7, Windows servers, Puppet, Tomcat, Apache, JBoss, database and support production environment.

Confidential, Baltimore, MD

UNIX Administrator

Responsibilities:

• Installation, configuration and OS upgrades on AIX 5.3; Redhat Linux 6; and SUSE Linux 11.
• Configuring Kickstart/AutoYast Servers and booting the images using PXE in Redhat Linux (RHEL & SLES).
• Installation of patches and other software packages on AIX and Linux Servers.
• Administration and Troubleshooting AIX servers running business critical application &WebLogic applications.
• Implemented and monitored clustering on Confidential p series servers using HACMP 5.4.
• Modified AutoYast XML scripts for automated SUSE Linux Installation.
• Worked on installation and configuration of SAMBA server for windows and Linux connectivity.
• Installing, configuring and deploying applications on Weblogic Application Server 9.0.
• Implemented and configured Backup policies and Storage Units using VeritasNetBackup 6.5.
• Performed file system tuning, growing, and shrinking with Veritas File system 3.5/4.x.
• Experience in internet services installation, configuration and maintenance (WWW on apache, SMTP on send mail, POP3, LDAP...) on Linux and AIX platforms, including security of provided services, ability to troubleshoot common and very uncommon problems, high availability services.
• Configure HACMP for a clustering environment on AIX servers and administered the virtualization environments consisting VIO servers.
• Use ILO/IMM/HMC for remote access of servers on Linux/AIX respectively.
• Experience in Implementation Apache, Tomcat 5.5 for the Java Servlet and Java Server Pages technologies.
• Administered the UNIX/Linux System for clustered Confidential Servers with fiber attached SAN storage.
• Maintained &troubleshoot SAN and Fiber card related errors on UNIX
• Discovered and attached LUNS provided by the Storage team to the required Unix/Linux Servers.
• Maintained &Troubleshoot Storage Disks from Confidential and EMC Disk arrays.
• Created disk pools and configured shared virtual disks using Symmetrix Management Console.
• Installing, maintaining, upgrading and supporting Redhat Linux systems w/ Oracle 10G RAC with Installed and configured LAMP (Linux, Apache, MySQL, and PHP) for different applications.
• Expert in writing Shell scripting using Ksh/Csh/bash/Sed/Awk.
• Scripted in python to deploy and manage applications.
• Monitored servers, switches, ports etc with Nagios monitoring tool.
• Experience in Servers consolidation and virtualization using UML Linux, XEN and HPSA Vsphere virtual infrastructure, HPSA Vsphere ESX, HPSA VsphereVcenter.
• Implemented NIS and NFS for administrative and project requirements on AIX and Linux platforms.

Environment: AIX /5.2/5.3, Redhat Linux AS3.0, AS 4.0, Sun Solaris 9,10, SLES 9, 10, Confidential System p series 520/570/590/630/650/670, Sun Fire 6800, 4800,V890, V880, V490,V480 and V210, Veritas Volume Manager, Confidential HACMP 5.4, Veritas Cluster Server, DS8300, Python, Websphere ND 5.1, XD 5.1, Weblogic 8.1, Samba, Oracle 9i/10g, Veritas

Confidential, Overland Park, KS

Linux/UNIXAdministrator

Responsibilities:

• Performed Kickstart installation of RHEL 4.x/5.x:custom built the servers per company requirement.
• Performed Kernel Tuning on Red Hat Linux and applied patches on Linux servers.
• Worked on upgrade of Red Hat Linux and Windows 2000 servers.
• Configured and managed security issues and performed back office system environments.
• Worked on installation and configuration of LVMs on various Linux servers.
• Configured Red Hat Linux servers for production and test environments running database and middleware applications.
• Installed, configured and upgraded SSH server on Red Hat Linux Environment.
• Conducted VERITAS NetBackup on development and production servers for backups and restores.
• Used Tivoli for incident and change management system.
• Configured TCP/IP on Red Hat Linux including RPC connectivity for NFS.
• Created shell scripts for automated installation to extract logs.
• Migrated Oracle RAC servers using system EMC open migrator and effectively worked with database team.
• Maintained user/group accounts, passwords, profiles, home directories, quota, permissions and customizing shell environments.
• Monitored file system space using simple shell scripts, resizing file systems when required.
• Administered production critical servers such as Solaris UNIX, Linux supporting Oracle database and Web services with 24x7 supports.

Environment: RHEL 4.0/5.0, Windows 200 server, LVMs, database and middleware applications, Solaris, Oracle, Web servers, Application server, VERITAS NetBackup, Tivoli, Oracle RAC server, iostat, vmstat and netstat.

Confidential

Red Hat Linux Administrator

Responsibilities:

• Worked as Red Hat Linux Administrator in IT infrastructure environment providing server administration, application administration and automation solutions to support business objectives.
• 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.
• Performed server consolidation and virtualization using HPSA Vsphere ESX 3.5/4/4.1
• Migration of HPSA VsphereESXi 4.0 environment to vSphereESXi 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.
• Created users, managed user permissions, maintained user and file system quota on RHEL servers.
• 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.
• Analyzed 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 Confidential AIX and Red Hat Linux.
• Wrote Shell scripts to automate the administrative tasks using cron and at in Linux.
• Defined and setup Network/Local printers, and install client/server applications.
• Defined/setup network protocols, Network File Services (NFS) and Network Information Services (NIS) on Linux servers.
• Worked on security, users, group administration and daily backup and restore operations, networking service, performance, and resource monitoring.
• Documented and maintained 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, Confidential P570, P590,HACMP 4.3.1 and 4.5, VeritasNetbackup 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, HPSA Vsphere 3.5/4.x, Shell Scripting.