SUMMARY

• 6 + years of experience as Linux/UNIX system administrator on Red Hat EL 4.x, 5.x, 6.x, 7.x Centos 4.x, 5.x, 6.x,7.x Solaris 8.x, 9.x,10.x, Ubuntu 13.x, 14.x, and VMware ESX environment.
• Experience in installing, managing VMware Esxi 4.x and 5.x. and KVM Hypervisor.
• Over 3 + years in the area of Windows Server 2003/2008/R2 .
• Experience in supporting ORACLE/Sybase/MYSQL Database.
• Experience working on boot loaders like GRUB and LILO and also upgrading Kernel on RHEL Linux servers.
• Experience in Redhat LVM, Solaris SVM, VERITAS Volume Manager, Veritas Cluster Server, VxFs, SVM, ZFS, Ext3, Ext4, UFS, ReFS.
• Experience in Configuring and Monitoring using NAGIOS, NAGVIS, NDOUTLS, ZENOSS, CA, SiteScope, Tivoli Tools and MRTG.
• Experience in configuring Kickstart & Jumpstart servers with PXE booting and experience working with Images and Flash Archives.
• Good Knowledge in automation by using Puppet and Blade Logic (BMC) running on RHEL Servers.
• Experience in working with LDAP/DNS/NIS/NIS+ services.
• Knowledge of SAN and NAS technologies.
• Coordinated with SAN Team for storage allocation and Disk Dynamic Multipathing (DMP).
• Experience in managing and troubleshooting FTP and Mail Server and Managing Back - ups.
• Excellent understanding on ESX Architecture, guest OS installation, setting up of VM priorities, Cloning and Snapshots, Virtual Network, ESX Server, ESXi Server & Virtual Machines, Templates from VMs and deploying VMs from Templates
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Updating and storing privileged passwords and enabling access to privileged accounts.
• Understanding of disaster recovery implementations.
• Experience in administrative jobs like User management, Security management, backup/restore and Package and Patch management.
• Knowledge in Oracle, MySQL, Apache/Tomcat.
• Experience in administration and maintenance of application service like DNS, Mail, HTTP, Apache, Tomcat, Squid, DHCP, SMPT, FTP, POP3, NIS, NFS and Samba.
• Experience in discovering, thereafter creating file systems on LUN from SAN environment
• Performance tuning of Linux machines in the environment by kernel parameter tuning, identifying process dat hog the system resources and containing them
• Configure Clusters, Load-balancing, High availability and fail-over solutions & Web Server.
• Hands-on experience in diagnosing, troubleshooting various networking, hardware & Linux/ UNIX server’s services issues and performing preventive maintenance.
• Ability to lead technical discussions and projects in an organized manner
• Ability to document strategies and designs and present to these ideas to management.
• Able to manage time TEMPeffectively and to deliver on commitments.

TECHNICAL SKILLS

Programming Languages: C/C++, Java, UNIX shell scripting (Bourne, Bash), HTML, Perl 5, Python, VI text editing, Awk & Sed, PL/SQL

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

Operating System: Red hat 4.x, 5.x, and 6.x,7.x CentOS 4.x, 5.x,6.x, 7.x SuSE 9/10, Sun Solaris (8, 9 & 10), Ubuntu 13.x and 14.x

Hardware: Dell Poweredge Servers R610/ R710, 6650, HP Proliant DL 360 G3/G4/G5, HP DL 380, IBM x3650 series, Sun Ultra 5/10/60,Sun Enterprise (E250/450, 5000, 6500), EMC VNX 5300, Hitachi, Netapp.

Networking: TCP/IP, NFS, NIS, DNS, DHCP, LAN, WAN, TELNET

PROFESSIONAL EXPERIENCE

Confidential, Richardson, TX

Unix/Linux Customer Support Engineer

Responsibilities:

• Installed and configured RedHat Linux 5.x, 6.x, 7.x Solaris 9/10 by testing tuning, upgrading and patching.
• Troubleshooting RHEL, IBM, Sun and HP servers for network, hardware and OS related issues.
• Worked with Redhat Satellite Server for upgrading and installing Packages and patches in RedHat and managing channels.
• Installed and updated packages using RPM.
• Worked with VMware ESX server 5.5 and configured VMs for Red Hat Enterprise Linux servers.
• Worked on building and maintaining virtual servers in VMware VSphere.
• Maintained VM's using VMware ESX/ESXi and vCenter.
• Managed virtual machines' clones and templates.
• Created new VM's by deploying the templates and also by cloning on VMware ESXi 5.x.
• Created new file system, disk groups and managed existing file system using VxVM/SVM in Solaris 9.x, 10.x and LVM in RHEL 5.x, 6.x, &7.x.
• Worked on the configuration of mail server using SendMail and Postfix.
• Created and managed user/group accounts, password and setting up permissions.
• Worked with DBA team on installation and configuration of Oracle Database Servers.
• Configuration of NIC Bonding on Linux and IPMP on Solaris.
• Implemented Network File System (NFS) for file sharing and network installation
• Worked with FTP for smooth transfer of files between local and remote servers.
• Monitored the performance of the system using top, glance, sar, ps, vmstat, netstat, iostat and cpuinfo to check the CPU utilization, bottlenecks of I/O devices, memory usage and network traffic.
• Troubleshoot network connectivity used ping, netstat, ifconfig, and trace route commands
• Familiar with backup and restore of VMWare host server configuration, virtual machine backup, and snapshot, P2V-V2V conversion with VMware converter.
• Worked on Shell Scripts for automation of daily tasks and created cron jobs.
• Local and Remote administering of servers using SSH.
• Setup, configured and maintained NFS, NIS, and TCP/IP network, setting up SSH and SCP features between hosts.
• Modified vfstab and fstab file for automatic mounting while booting, format disk and restoration of UNIX/LINUX files and file systems.
• Monitored disk space usage and increased the disk size of VM’s from vCenter.
• Monitored on adding and removing swap space as necessary.
• Worked in solving daily activity tickets and problems related to development and test servers.
• Provided 24x7 on call /remote support on weekly rotation basis.

Environment: RHEL 5.X, 6.X, 7.X Solaris 9.X,10.X,11.X VMware ESXi 4.X, 5.X, VxVM, EMC, LVM, SPARC Servers, IPMP, NFS, Send Mail, Postfix.

Confidential, Richardson, TX

Linux/Unix System Engineer

Responsibilities:

• Performed installation, configuration and tuning of Linux.
• Installed PXE servers, Kickstart configurations for automatic Linux Installation.
• Working experience with Redhat Satellite Server for upgrading and installing Packages and patches in Redhat; and managing channels.
• Administered, maintained Red Hat 4.x/5.x/6.x/7.x Troubleshooting Hardware, Operating System Application & Network problems and performance issues; Deployed latest patches for Sun, Linux and Application servers, Performed Solaris and Red Hat Linux Kernel Tuning for TCP stack.
• Installing and upgrading Red hat Linux, firmware, failed hardware and system support software HP ProLiant Servers.
• Configured and maintained the HP ProLiant Essential Software packages on the PICS and Preload Assist Servers.
• Managed various servers using VMware vSphere ESXi 4.1 /5.0/5.1.
• Familiar with backup and restore of VMWare host server configuration, virtual machine backup, and snapshot, P2V-V2V conversion with VMware converter & with other third party converters.
• Disk Space management using VERITAS Volume Manager.
• Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
• Installing and setting up Oracle9i on Linux for the development team.
• Installed VMware ESX servers and configured Solaris 9/10/ Red Hat Linux 5.x/6.x virtual machines.
• Installation of software packages and checking the integrity of the installed packages. Installed different RPM Linux 4.0/5/0.
• Administered Linux servers for several functions including managing Apache/Tomcat, WebSphere and Weblogic application server, MySQL database in both development and production.
• Installed and configured Sudo for users to access the root privileges.
• Integrating UNIX file systems using packages like SAMBA. Setting up printers on UNIX machines to work seamlessly across platforms.
• Worked with different hardware and software vendors to troubleshoot the hardware and software problems.
• Experienced in Troubleshooting critical hardware and software issues and other day-to-day user trouble tickets.
• Document backup policies and procedures for backup routines, schedules and restore policies..
• Responsible for backup of all servers, and recovery of servers.
• Managing cron jobs, at Jobs, batch processing and job scheduling.
• Able to create and maintain documentation for servers and storage environments.
• Supporting and in-depth troubleshooting of Linux/Unix servers 24 x 7 Environment

Environment: RHEL 5.X, 6.X, NFS, Solaris 9/10, VMware ESXi 4.X, 5.X, SAMBA, EMC, LVM, HP ProLiant Series, Apache, WebSphere.

Confidential, Fort-Worth, TX

Linux System Engineer

Responsibilities:

• Involved in installation and configuration operating system Red hat Enterprise Linux (RHEL5.3 and RHEL 5.4) in development and test environments almost six levels on HP physical servers and Virtual Machines
• Worked with VMware ESXi 4.0, 5.1 & 5.5
• Build and troubleshooting experience in Windows Server 2003/2008/R2 with VMware ESX Server, ESXi Server and Virtual Center Server 2.5, vCenter 4.0 and vCenter 5.0/5.1./5.5.
• Worked on migration from physical to virtual (P2V) environment.
• Worked on backing up physical server, deploying the new VM on KVM hypervisor.
• 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 in adding new Users and groups and give 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.
• 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
• Accomplished Disk Mirrors and RAID 0, 1 and 5 levels on several UNIX/LINUX servers.
• Involved in back up, firewall rules, LVM configuration, monitoring servers and on call support
• Involved in UNIX shell scripting for system/application in automating server task, installing and monitoring applications and data feeding file transfer and log files.
• Involved in installing and configuring operating system Red hat Enterprise Linux in Production, QA and test environments on standalone IBM servers and IBM Blade Center Hardware.
• Configured Kickstart for RHEL 5 to perform image installation through network.
• Deployed Linux hardware Nodes to host several KVM templates.
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup
• Creating and managing user accounts and groups and their permissions and creating files and directories permission.
• Used Puppet for creating scripts, deployment for servers, and managing changes through Puppet master server on its clients.
• Assembled Puppet Master, Agent and Database servers on Red Hat Enterprise Linux Platforms
• Co-ordinate with Middleware team in installation, configuration and troubleshoot issues with WebSphere Application Server and Apache/Tomcat server on Linux.
• Installed/Configured/Maintained/Administrated the network servers DNS, NFS and application servers Apache and Samba server.
• Extensively worked with the LAN/WAN, 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.
• Modifying user’s password policies, group policy, UID and GID assignment policies.
• Created and managed user/group accounts, password and setting up permissions.
• To troubleshoot network connectivity used ping, netstat, ifconfig, 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.
• Linux/Unix technical support and prepared technical documentation for check in verification.
• Regular backing up of critical data and restoring backed up data Worked in solving tickets issued on day to day activities and problems related to development and test servers.

Environment: Red Hat Linux (RHEL 5), Oracle 10G, KVM, TCP/IP, DNS, DHCP, NFS, Puppet, SAMBA, Apache, Web Logic, POSTFIX, POP3, SMTP, MySQL, Oracle

Confidential, Farmers Branch TX

JR .System Administrator

Responsibilities:

• Administration of Sun Servers (SPARC and x86) running Solaris 8/9/10 and Dell, HP Servers running Red hat EL 4.x, 5 which included jumpstarting, performing live upgrades of Solaris operating systems and Kick starting Red hat EL 3, 4.x, 5.
• Worked on Installation, Maintenance, and troubleshooting of Sun Solaris 8/9/10 and Red hat 3/4/5 servers on various hardware platforms.
• Involved on performing automated installations of Operating System using Jumpstart for Solaris and Kick start for Linux.
• Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
• Worked on Creating of VMs for Solaris x86 and Linux on VMware ESX 3.5.
• Worked on volume management using VERITAS Foundation Suite 5, SVM and LVM and the creation of ZFS, VxFS, UFS and ext3 file systems.
• Worked on Developing, customizing and build packages on Solaris and RPMs on Linux for deployment on various servers through Software Development Life Cycle.
• Worked on local and remote Backup/Recovery policies using commands like tar, cpio.
• Worked on Software and application package administration and troubleshooting at user level on TCP/IP network environment.
• Worked on Provisioning of LUNs from SAN.
• Managed user accounts and groups with disks and Filesystems.
• Experienced on Patch management using native commands on Solaris and Linux and following the chance control procedures.
• Administering and monitoring DNS, NFS, NIS.
• Worked on Configuration and support of VERITAS Cluster Server 4.x for various agents including SAP, Oracle, and DNS.
• Worked on backup and restore of file systems using VERITAS Netbackup.

Environment: Sun Solaris, Red Hat Linux (RHEL 4.x, 5.x), Oracle, TCP/IP, DNS, DHCP, NFS, SAMBA, Apache, POSTFIX, POP3, SMTP, MySQL, Oracle, VMware