SUMMARY

• Experience of 6+ years working on Red Hat Enterprise Linux, Debian Linux, Ubuntu Linux, Centos Linux, Fedora Linux.
• Experience with VMware vSphere ESXi 4.1/5.0/5.1 and SRM 4.5
• Experience and Familiar with Virtualization technologies like installing, configuring, administering VMware ESX/ESXi and Citrix XEN Server. Created and managed VM,s (virtual server) and also involved in the maintenance and upgrading of the virtual server.
• Extensive understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel and wireless networks.)
• Excellent understanding of networking fundamentals and network security.
• Installation, Configuration and managing Firewalls like Fortinet, ZyWall, SonicWall, ISA with content filtering, Anti - Spam, Web filtering, NAT, Application Publishing to public IP, Port Forwarding, log analyzing with Syslog Server.
• Proficient on cloud based operation and automation.
• Experience in using a tools like Nmap, hping, Nessus for penetration testing.
• Experience in implementation Intrusion Detection System: Tripwire, Snort, Lids.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Experience with x86 / x64 Intel, HP, IBM & Dell hardware like rack-mounted servers, tower servers, desktop, laptop and other peripherals.
• Experience in iSCSI SAN, NAS, NFS storage and RAID concept.
• Experiences in NIS, LDAP, NTP, FTP, DHCP, SAMBA, users setup/troubleshooting.
• Experience managing various filesystem using VxVM, LVM and SVM and also configured filesystem through network using NFS, NAS methodologies and installed RAID devices.
• Experience in Server monitoring, capacity planning, application monitoring with the help of Tivoli, HP insight, Nagios, Cacti, Zabbix.
• Worked with Puppet Enterprise tools for automation, deployment and systems reporting.
• Handling day-to-day User Administration tasks like adding, deleting and modifying user data and documenting all user data in a centralized location.
• Performance tuning of Linux machines in the environment by kernel parameter tuning, identifying process that hog the system resources and containing them.
• Experience working in customizing the Kickstart and Jumpstart scripts to automate the installation of various servers used for various internal projects.
• Responsible for Backup and Recovery operations of various servers using VERITAS Net Backup.
• Scripting skills for scheduling services and backup.
• Responsible for OS maintenance activities like upgrading the OS, updating the services and third party software’s.
• Installation and configuration of Web Application servers like Apache, Tomcat, Samba and WebLogic.
• Experienced in documenting various maintenance activities and upgrades and changes in the network architecture.
• Worked with a bug/problem tracking system in responding to DNS requests, updates and tasks.
• Experience in Microsoft Office Suite, Open Office, Visio, Outlook, Printing, Windows networking, Security patching
• Extensive knowledge and experienced of Red Hat and VMware Cloud computing and Deployment
• Expertise on Amazon Web Service.
• Create RPM packages for installation and setup the application and its dependencies
• Created build/release and configuration management procedures.

TECHNICAL SKILLS

Programming Languages: C/C++, UML Modeling, Assembly (A86 & MASM), Java, UNIX shell scripting (Bourne, Bash & Korn), HTML, VHDL, Perl 5, Python, VI text editing, Awk & Sed, PL/SQL.

Software: GNU Tools, Borland C++, Office 2000, Window 95/98/2000,2003, NT 4.0, MS Project, Solstice Disk suite, SVM, Apache, Sun Raid Manager 6.1.1,NFS, Veritas Volume Manager 3.2/3.5/4.1, Send mail 8.12.x, SQL (Oracle 8/9 & DB2), Veritas Netback up 5.1

Operating System: Red hat 6/7/8/9/EP2/3/4/5, SuSE 9/10, Sun Solaris (7, 8, 9 & 10), Windows 95/98/2000.

Hardware: Intel Based Servers/PCs, Dell/ HP servers and PCS. Sun Ultra 5/10/60, Sun Enterprise (E250/450, 5000, 6500),Sun A1000/D1000/3310FC Array, Netra T1, Sun Fire (280R, 420R, V210, V240, V250, V440, V480, V490, V880, V890),Linux Server

Networking: NFS, AutoFS, NIS, DNS, DHCP, LAN, WAN, DHCP, NAT, SQUID, SAMBA

Tools: VMWare, PCAnywhere, HP-ILO, IBM-RSA, Dell - RAC, Puppet Enterprises

PROFESSIONAL EXPERIENCE

Confidential, Phoenix, AZ

Linux Administrator

Responsibilities:

• Experience running web scale services on Amazon AWS
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Deployed LDAP for centralized authentication.
• Deployed centralized Apache Tomcat war files.
• Abstracted existing domain purchasing code. This allowed us to purchase domains from any registrar that exposes a domain purchasing API.
• Redesigned and redeployed the Nagios implementation. Nodes automatically added/removed themselves via Puppet.
• Deployed a distributed Jenkins environment for continuous integration/builds. All builds output rpm packages as artifacts.
• Responsible for packaging all code into RPMs.
• Sound knowledge of puppet or other Infrastructure Automation framework
• Familiarity with JVM build systems, deployments, monitoring, performance tuning.
• Used Git (including GitHub) for data repository.
• Refactored DNS infrastructure; replaced implementation with Bind. Wrote a script to generate zone files based on the data in RT.
• Built a web based employee directory tool in PHP backed by a MySQL database that integrated with our Active Directory installation.
• Took professional portraits of entire US based engineering staff.
• This tool allowed people to put faces to names and also allowed people to view what projects others were working on.

Environment: AWS console, S3 bucket Red Hat Linux (RHEL 6.3), Oracle 10G, TCP/IP, DNS, DHCP, NFS, SAMBA, Apache Tomcat, Puppet enterprise 3.0, JIRA GITHUB, MySql, Cloud computing.

Confidential, Minneapolis, MN

System Administrator

Responsibilities:

• Managed various servers using VMware vSphere ESXi 4.1/5.0/5.1.
• Responsible for installation and configuration of Red hat Enterprise Linux (RHEL6.3 and RHEL 6.4) in development and test environments on HP physical servers as well as Virtual Machines
• Created Physical to virtual server and managed Virtual server and also involved in the maintenance of the virtual server.
• Designed, managed, implemented/ supported: Backup/Recovery/Archive, Security Startup/ Shutdown, Mass Storage (SAN/NAS), OS Installations/Patches, Hardware/Software installation, Batch scheduling, Data center Migration, Application and Server performance
• Worked on configuring Red hat Enterprise Linux in Production, QA and test environments on standalone IBM servers and IBM Blade Center Hardware
• Worked with Red hat Linux tools like RPM to install packages and patches for Red hat Linux Server and managed virtualized OS
• Added new Users and groups and gave sudo access in test and development servers and central file synchronization via sudoers, authorized keys, passwd, shadow, group
• Worked with DBA team in installing and configuring Oracle 10 g and 11g, Sybase, Db2 client v 8.1 and v9.0
• Good experience in Installation Configuration and maintenance of SQL server and Database services.
• Coordinated with application team in installation, configuration and troubleshoot issues with Apache, Web logic on Linux servers
• Used VERITAS Volume manager to create disk groups, volumes, volume groups, and RAID’s
• Responsible for backups, firewall rules, LVM configuration and monitoring servers on a day to day basis.
• Responsible for automation using Puppet Enterprise as well as system reporting.
• Deployed Puppet, Puppet Dashboard, and PuppetDB for configuration management to existing infrastructure.
• Used shell scripting (Including Korn, Bash and Perl) for system/application in automating server task, installing and monitoring applications and data feeding file transfer and log files
• Configured Kickstart for RHEL (Various versions) to perform image installation through network
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup
• Created and managed user accounts and groups and their permissions and creating files and directories permission
• Co-ordinated with Middleware team in installation, configuration and troubleshooting issues with WebSphere Application Server and Apache/Tomcat server on Linux
• Worked extensively on DNS, NFS and application servers Apache and Samba server
• Worked with the LAN/WAN,VPN,CITRIX firewalls and routing for Internet and Intranet connectivity using different protocols like TCP/IP, DHCP, HTTP/s, FTP, SMTP & SSH
• Involved in DMZ firewall rules, configure iptables and iptables init script, start and stop init script for Apache and other application server
• Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation
• Modified user’s password policies, group policy, UID and GID assignment policies as needed
• Mmonitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat and cpuinfo to check the CPU utilization, bottlenecks of I/O devices, memory usage and network traffic
• To troubleshoot network connectivity used ping, netstat, ipconfig, and trace route commands. To login to the remote system using sudo, putty and telnet. To transfer files across the systems on the network used ftp and scp commands
• Provided Linux technical support and prepared technical documentation for check in verification
• Regularly backed up critical data and restored backed up data
• Worked in solving tickets issued on day to day activities and problems related to development and test servers.
• Evaluate performance and prepare plans for capacity procedures and provide comprehensive support for same.
• Coordinate with various departments and perform all capacity planning activities in facility.
• Experience running web scale services on Amazon AWS

Environment: vSphere ESXi 4.1/5.0/5.1, Red Hat Linux (RHEL 6), Oracle 10G, TCP/IP, DNS, DHCP, NFS, SAMBA, Apache, Puppet 3.0, POSTFIX, POP3, SMTP, MySql, Oracle

Confidential, Atlanta, GA

System Administrator

Responsibilities:

• Installation, Configuration and upgrade of Solaris, AIX, HP-UX, LINUX & Windows Operating System
• User Administration, management and archiving.
• Install and configure EDA/IC Design software tools and licenses and provide related support
• Expertise in Performance Monitoring and Performance Tuning using Top, prstat, SAR, vmstat, ps, iostat etc.
• Expertise in package management using Red Hat RPM. Used RPM in several Linux distributions such as Red Hat Enterprise Linux, SUSE Linux Enterprises and Fedora.
• Configuring NFS, NIS, NIS+, DNS, Auto Mount & Disk Space Management on SUN Servers.
• Experience in Configuring and Managing Virtual Disks, Disk Mirrors & RAID 0, 1 & 5 Level
• Installation and configuration of VERITAS Volume Manager &VERITAS file system.
• Installation, configuration and administration on VERITAS Cluster Server, Redhat Cluster Server.
• Configured new service group & resources for new application in High Availability environment.
• Installation and configuration of Solaris ZONES Created Zeta byte file systems (ZFS) in Solaris 10.
• Extensive experience with working on Sun Volume Manager. Creating Meta devices, soft partitions, mirroring the devices and Meta sets.
• Space allocation to the Meta devices, detaching and clearing the devices if not in use.
• Experience in Disaster Recovery and Planning.
• Maintaining the CPU and Memory Utilization of SUN Servers reports on the WEB.
• Installed and monitored VMware Virtual environments with ESX 3.x, ESX i servers Virtual Center 2.X.
• SENDMAIL configurations and administrations, testing the mail servers.
• Utilized DTrace in Solaris 10 for Performance Tuning of the Operating System and User Programmers.
• Experience in adding and configuring devices like hard disks and backup devices etc.
• Monitor daily Net Backup activity and reporting to proactively avoid issues.
• Improve automation and productivity of backups through scripting enhancements.
• Create technical documents, troubleshooting and how-to documents for entire support to use as self-help technical solutions
• Modify and Optimize backup schedules.
• Created/maintained GFS (Global File System) in Linux environment. Supported Oracle RAC.
• Performed automated installations of Operating systems using Jumpstart, Flash Archive for Solaris and ignite for HP-UX.
• Worked on solaris10 container technology, created local and global zones, modified local zone parameters, created file systems on local and global zones.
• Performed setup and configuration of Install Server, Configuration Server and Boot Server for Jumpstart process and using FLAR technique and Tape-Recovery for file system recovery.
• Used VMware for testing various applications on different operating system.
• Provided 24x7 supports on pager rotation basis.
• Responsible for administrating creating and documenting the new ACL policies enterprise LDAP
• Provided for 24*7 production support for application supporting on Single Sign On/User Authentication environment across multiple geographies

Environment: Red Hat Linux (RHEL 5), Oracle, TCP/IP, DNS, DHCP, NFS, SAMBA, Apache, POSTFIX, POP3, SMTP, MySQL, Oracle, VMware

Confidential, Houston, Texas

System Administrator

Responsibilities:

• Installation and configuration of Linux (RHEL) and UNIX (AIX, SUN SOLARIS) servers in production and test environments
• Operatingsystem installationand configuration (methods including Kickstart, jumpstart), disc partition set-up, patch administration, package management including kernel upgrade
• Setup, maintenance, and operation of company-wide services such as DNS (BINDv8), mail (sendmail), www (Apache/SSL), Samba, and DHCP
• Implemented automated installations with Kickstart/Jumpstart, installed RPMs and packages. Always installed servers with the assumption that they will be unprotected on the network and therefore must be very secure. Wrote policies and procedures for securely deploying Red Hat Linux, Solaris, non-firewalled environments
• Configured storage using LVM (Logical Volume Manager) to configure volume group, logical and physical partitions and importing new physical volumes.
• Implemented RAID configuration for redundancy members of a team
• Configured Telnet, FTP, sFTP, SSH, iptables, Samba for the servers
• Deploy, configure and maintain Open Fiber based SAN/NAS units
• Performed reconciliation of checks and datamigrationfrom one tier to another
• System Design - designed, deployed and maintained multiple Linux-based FTP/MySQL servers for end users
• Disaster Recovery - Designed, built and maintained disaster recovery data center for company
• Networking Support -Routing, WAN/LAN, switching and VPN support
• System Deployment -Implemented new system imaging procedures to improve consistency in end-user computer system deployment
• Scripting and task automation using Corntab, Bash, Korn shell scripting
• Developed and implemented a network monitoring solution to monitor disparate networks

Environment: s: Red Hat Enterprise Linux, Fedora core, Sun Solaris, Windows 2003 server, TCP/IP, DNS BIND, SAMBA, APACHE,CISCO, SSH,MS Windows XP

Confidential, Charlotte, North Carolina

System Administrator

Responsibilities:

• Software and Hardware upgrades of Solaris/Linux systems
• Installed and Configured vsftpd, Telnet, Dhcp, Httpd, Ftp, ssh, iptables, squid Samba for the servers
• Configured kickstart files, installed RPMs & Packages and Installing Patches
• Installed and administered Debian GNU/Linux systems providing IS infrastructure (mail, web, FTP, streaming media)
• Managed, and performed the upgrade of Symantec/VERITAS Netback up infrastructure from version 4.5x to 6.x in mixed UNIX/LINUX/Solaris environment
• Designed and implemented an automated system installation and configuration system, based on Solaris Jumpstart and GNU
• Responsible for corporate level auditing compliances like system security, network security and installation of recommended patches
• Experience in debugging scripts and written shell scripts to reflect the changes to many UNIX systems
• Routing related tasks included providing Cisco routers and switches configuration and change management, providing technical support for Cisco Router configurations and installation for customer
• Excellent experience and knowledge with designing, installing and implementing VMware ESX server, VMware virtual center, virtualization tools
• Involved in hardware installation and maintenance of workstations, servers, and other supporting hardware.
• Involved in managing the company’s hardware and all set-up issues
• Setup new Configure Management system based upon Perforce
• Monitoring, troubleshooting, and Diagnose of infrastructure performance

Environment: s: Red Hat Enterprise Linux, Fedora core, Solaris, Windows 2003 server, Apache, Squid, BIND, Web logic, Sendmail, MS Windows 98/XP