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Senior Unix/linux Admin And Support Resume

Orlando, FL

PROFESSIONAL SUMMARY:

  • Over 10 years of experience specialized in System Administration working on Red hat Linux, Solaris, SUSE Linux, AIX, and Windows environments.
  • Experience in administering Solaris & Linux. Experience in Installation, Configuration, Backup, Recovery, Maintenance, Support of Sun Solaris & Linux.
  • Experience in Installing, upgrading and configuring Red Hat Linux 3.x, 4.x, 5.x6.x, 7.Xusing Kick start Servers and Interactive Installation.
  • Experience in Installing, upgrading and configuring SUN Solaris 8, 9 and 10 on Sun Servers using Jumpstart Servers, Flash Archives and Interactive Installation.
  • Worked with Database administrators to tune kernel for Oracle installations.
  • Experience with VERITAS Volume Manager (VxVM), VERITAS File System (VxFS), VERITAS Net Backup, VERITAS Clustering with SAN, NAS environment.
  • Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris volume manager.
  • Participated in Server Migration from moving server from Physical to Virtual Machine VM.
  • Migration using VMware converter to move VM’s from one Vcenter to different Vcenter.
  • Experience in Creation and managing user accounts, security, rights, disk space and process monitoring in Solaris and Red hat Linux.
  • Installation and up gradation of Packages and Patches configuration mgmt., version control, service pack. & reviewing connectivity issue regarding security problem.
  • Experience in configuration of NIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, send mail, ftp, remote access, security management and Security trouble shooting skills.
  • Experience on Webservers such asplanet Webserver 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x,4.x,5.x & Apache Server 1.x, 2.xand integrating them with Web logic 10.x servers.
  • Experience in administering VMware Infrastructure Client 3.5 and VSphere 4.0, 5.0, Xen, KVM.
  • Installation and configuration of Oracle RAC 11g on Solaris, AIX and Red Hatcluster nodes.
  • Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
  • Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
  • Experience in Sun Solaris 10(Ldoms, Creation of Zones, Service Management Facilities, Virtualization, Container based).
  • Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays.
  • Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570.
  • Experience on Blade logic automation tool used to upgrade operating system and Provisioning for newly build servers.
  • Installation and configuration of Jboss, Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
  • Install and maintain TNG Unicenter large number UNIX and windows enterprise systems.
  • Experience supporting 24x7 production computing environments. Experience providing on - call and weekend support.

TECHNICAL SKILLS:

Operating Systems: Sun Solaris 10, 9, 8, Red Hat & SUSE Linux (4.X, 5.X. 6.X 7.X) ES & AS, HP-UX, IBM-AIX, Windows 2003/XP/2000

Hardware: Sun Ultra Enterprise Servers (E3500, E4500, E450, E420R, E250,Sun Fire (6800/4800/3800/ v880/v480/v210/v440/280R/15K/25K), Sun Workstations (Ultra 5, 10,20,Blade 100,150,2000), IBM X-series and P-series, IBM RS6000, Sun Storage Array D1000,A5000. HP Proliant

Software: VERITAS File System, VERITAS Volume Manager, Solaris Volume Manage, Solistice Disk Suite 4.x.

Tape Hardware: Storage tek tape libraries L40, L80, L180, L700, Sl500, Sl850, DAT & DLT, STK 9940B, 9840B, LTOs

Cluster: VERITAS Cluster Server, Red Hat Cluster Server

Web/Application Server: Tomcat, Apache, IBM RSA/WAS, Web Logic

Scripting Languages: Born, Bash, KSH & Perl

Database: Oracle, DB2/UDB, AS/400, Sybase

Languages: C ++, Java, VB 6.0, XML, HTML, Perl, Shell Scripting

ERP: SAP R/3, PeopleSoft, Siebel

PROFESSIONAL EXPERIENCE:

Confidential, Orlando, FL

Senior UNIX/Linux Admin and Support

Responsibilities:

  • Installing and configuring SUSE, REDHAT LINUX 5.x/6.X/7.X through manual build procedure.
  • Expert in configuring DMZ ( Demilitarized Zone) server in the IBM environment.
  • Server Net backup project were handled. Worked on Net backup issues on Production Hosts to get the server backup on daily or weekly basis. Configuring the Network to the backup interface, Make sure Net backup agents are working, Need to check the Static routes & able to configure the routing script manually.
  • Use Blade logic Configuration Manager to upgrade Solaris and Linux operating Systems as well as update firmware through Bladelogic.
  • Use Rapid Host Provisioning Manager to build new Solaris and Linux Servers.
  • Use Rapid IT technology to build multiple Linux Servers once at a same time.
  • Performed patching and OS upgrades (rebuilds) and associate hardware break/fix, triage and software Installations related to the patching and OS upgrade activities from SUSE LINUX 10 to 11 with patch lever SP4.
  • Worked on Networking and communication devices, Server Utilities, TCP/IP, and FTP. Expert in data center operations including hardware, software setup monitoring, troubleshooting ll and Configure WebSphere Application 7.x/6 and WebSphere Commerce Servers 7.x/6/5.6.
  • Participated in moving Virtual Machines from Vcenter (VMware Vcenter) to Cloud.
  • Handled different types of migrations such as Physical Machine to Virtual Machine, Virtual to Virtual, Virtual Machine to Physical based on customer requirements or Fulfillment team projects requirements.
  • Provided day to day build support in an environment consisting of thousands of Linux servers for a 24x7 demanding trading division with emphasis on responsiveness and project ownership.
  • Mostly followed the change management process to complete the changes as per customer needs.
  • Use Blade logic Configuration Manager to upgrade Solaris and Linux operating Systems as well as update firmware, HBA, EMCpower and Banktools through Bladelogic.
  • Written NSH script in Bladelogic to create Falr image and Tar file backups for Solaris and Linux Servers.
  • Use Bladelogic Provisioning Manager to build new Solaris and Linux Servers.
  • Performed patching and OS upgrades (rebuilds) and associate hardware break/fix, triage and software Installations related to the patching and OS upgrade activities.
  • Provisioned and build CHP (compute host platform) Red hat Linux 6.1 virtual machines, these servers based cloud computing.
  • Installed and configured Solaris 10 servers with Zones and containers on SUN M5000 and T2000 Servers with SUN ZFS.
  • Provided day to day build support in an environment consisting of thousands of Solaris, Linux and AIX servers for a 24x7 demanding trading division with emphasis on responsiveness and project ownership.
  • Provided rotational on call responsibilities to support issues that arises as the result of patching, upgrades or server rebuilds performed by the team.
  • Work with Engineering groups, Web Commerce Group, to plan, design, scope and implement development projects on pre-production as well as production systems.
  • Responsible for automation of key Unix Systems administration tasks such as User admin, scripting, setting up connectivity, backup and automation scripting and keeping system documentation up to date.
  • Experience working with Solaris Zones/Containers and new features of Solaris 10, zone reconfiguration and file system layout modification of the containers supporting the Sybase and Oracle database.
  • Installed and upgrade HBA Drivers, Firmware, Power Path and SAN Agents like NAVIAGENT, NAVICLI and NAVISCLI for EMC SAN storage.
  • Installed Hadoop on Red hat Cluster servers.
  • Setup Hadoop Distributed File System (HDFS) for high-throughput access to application data.
  • Worked on weekly decommission process on enterprise wide servers in based on request from customers, take all necessary due diligence before shutting the servers.
  • Worked and performed data-center operations including rack mounting, cabling.
  • Communication with customers, data center personals and Vendors on decommissioned based servers.
  • Attended team meetings, change control meetings to update installation progress, and for upcoming change in environment.
  • Documented installation procedures, changes required in present environment and Provide server remediation to ensure all vulnerabilities have been addressed.
  • Performed Storage migration on physical servers.
  • Able to find the root cause on puppet configuration files on a production server. Installed puppet on Linux servers manually.
  • Worked on weekly decommission process on enterprise wide servers in based on request from customers, take all necessary due diligence before shutting the servers.
  • Attended team meetings, change control meetings to update installation progress, and for upcoming change in environment.
  • Documented installation procedures, changes required in present environment and Provide server remediation to ensure all vulnerabilities have been addressed.
  • Mostly followed the change management process based on the company standards.

Environment: Red-Hat 5.X, 6.X, 7.X, SUSE Linux Enterprise servers, DMZ servers, Shell programming, Jboss 4.2, JDK 1.5,1.6,, VMware Virtual Client 3.5, VMware Infrastructure 5 and 6.

Confidential, Atlanta, GA

Linux Admin

Responsibilities:

  • Developed holistic solutions by analyzing client needs and employing critical thinking in the development of specifications and the evolution of design, implementation and test
  • Designed systems utilizing Sun Solaris 10, Red Hat Enterprise Linux 6 and AIX 5L
  • Significantly increased storage space; analyzed and matched workloads to a cost effective solution
  • Created shell scripts and cron jobs that monitored and reported security issues
  • Resolved security vulnerabilities by analyzing and recommending improvements in communications and network security at the component level
  • Ensured business continuity by designing, implementing and testing disaster recovery systems
  • Managed, monitored and tested individual and group user access privileges and security
  • Created checklists and collected audit data for compliance with SOX and PCI certifications
  • Developed, implemented and verified security policy and access management compliance
  • Monitored system performance and prevented resource exhaustion using ssh, sar, vmstat, iostat, netstat
  • Resolved trouble tickets quickly and efficiently, dropping backlogged tickets from 1,000+ to under 100.
  • Wrote custom scripts and automated tasks to free up research and project time.
  • Eliminated extended downtime of network and processes by installing and configuring a Nagios server to monitor Windows/Linux servers.
  • Raised the level of expansion and research by automating tasks freeing up time for research and testing.
  • Provided HPC system administrator support for the larger Beowulf cluster and the newer SGE cluster
  • Configured and maintained all web servers
  • Configured, tested, and managed software installs (typical and custom)
  • Served as communication conduit between programmers and network operations central staff
  • Planned, tested, and introduced new systems into the infrastructure
  • Worked with other administrators to strategize and improve systems/productivity
  • Maintained security and mitigated threats as new ones were identified
  • Build virtual Linux server and Windows server using VMWare and Xen when needed for testing.
  • Implemented sudo utility throughout the environment for ESB servers and documented the process.
  • Worked with Backup team to install and configure networker client on the Linux servers.
  • Used Tivoli for server monitoring. Created view for Development users to review Broker and MQ stats.
  • Involved in administration and setup of various High Availability clusters on Linux & Solaris servers using VCS 4.1 and Redhat Cluster Suite.
  • Participate in installing and configuring of UNIX/Linux based Oracle 10g products.
  • Wrote Unix/Perl Shell Scripts for day-to-day system administration activities and perl

Environment:, SAN(Netapp), Blade Logic, VERITAS Cluster Server 5.0, Windows 2003 server, Shell programming, Jboss 4.2, JDK 1.5,1.6, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential

Linux Admin

Responsibilities:

  • Interact with the clients to talk about the problem and requests regarding the complex systems
  • Configured and administered the network infrastructure
  • Established and managed Vyatta and iptables firewall
  • Supervised backup and disaster recovery operations
  • Managing servers on VMware ESXi 3.5 and VMware Workstation
  • Installing and maintain Sendmail, Postfix, QMail, DNS and OpenVPN servers
  • Monitored network traffic and adjust system parameters to increase system performance
  • Involved in shell scripting for system/application in automating server task, installing and monitoring applications
  • Formatted raw disks& partitioned them using the fdisk utility. Created file system using newfs and mounted it.
  • Configuring of nodes, Virtual IP, Private and Public network for Oracle RAC.
  • Utilized Linux Terminal Server for removing fat client management, save on administration Provide users with a more reliable & secure environment.
  • Disk and File system management through VERITAS Volume Manager&Solstice Disk Suite on Solaris, Logical Volume Manager in HP-UX.
  • Implementation of numerous VMware ESX virtual machines (2.5.x and 3.0).
  • Experience in creating Groups, Resources, Setting the resource properties and making Resource Online on MS Cluster Service.
  • Worked in configuring and setup connectivity between web servers, database servers and directory servers as a process server administrator.
  • Worked on Solaris volume manager to create file systems as per user and database requirements.
  • Trouble shooting the system and end user issues.
  • Responsible for configuring real time backup of web servers.
  • Log file was managed for troubleshooting and probable errors.
  • Responsible for reviewing all open tickets, resolve and close any existing tickets.
  • Document solutions for any issues that have not been discovered previously.
  • Coordinated with the Storage, Network and Hardware teams on server provisions (HP Proliant DL385/585 G5, G6 servers, and HP BL465CG5 blade centers).
  • Supporting 24x7 production computing environments and providing on-call and weekend support.
  • Configured HACMP 4.5 to monitor, detect and react to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events.
  • Installing, administering RedHat using Xen, KVM based hypervisors.
  • RPM and YUM package installations, patch and other server management.
  • Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
  • Worked and performed data-center operations including rack mounting, cabling

Environment: Red-Hat Linux Enterprise servers (HP ProLiant DL 585, BL 465/485,ML Series), Solaris 8,9,10, AIX 5.3, 6.1.

Confidential

Linux Admin / DevOps Engineer

Responsibilities:

  • Administration of RHEL4.x, 5.x which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
  • Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 3.5 and migrating servers between ESX hosts, Xen servers.
  • Installing Red Hat Linux using kicks tart and applying security polices for hardening the server based on the company policies.
  • Installed, manually configured Sun machines throughjumpstart installation on Sun Fire and Enterprise servers. Installed, configured Zones, LDOMsin Sun Solaris 10.
  • Build LPAR system and Installed AIX 5.3 and 6.1 on LPAR using NIM Power 4, Power 5 systems and Upgraded Maintenance level as well.
  • Installed and verified that all AIX/Linux patches or updates are applied to the servers.
  • Installed, configured, and maintained Weblogic10.x and Oracle10g on Solaris & RedHat Linux.
  • Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
  • Configuring multipath, adding SAN and creating physical volumes, volume groups, logical volumes.
  • Installing and configuring Apache and supporting them on Linux production servers.
  • Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
  • Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
  • Worked on resolving production issues and documenting Root Cause Analysis and updating the tickets using BMC Remedy.
  • Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
  • Monitored server and application performance & tuning via various stat commands (vmstat, nfsstat, iostatetc) and tuned I/O, memory, etc.
  • Installation and configuration of VxVM 5.0 and creating disk groups, volumes, increasing volumes.
  • Installation, Configuration, up gradation and administration of Sun Solaris, Red Hat Linux.
  • User account management and support.
  • Jumpstart &Kick-start OS integration, DDNS, DHCP, SMTP, Samba, NFS, FTP, SSH, LDAP integration.
  • Network traffic control, IPsec, Quos, VLAN, Proxy, Radius integration on Cisco Hardware via Red Hat Linux Software.
  • Responsible for configuring and managing Squid server in Linux.
  • Configuration and Administration of NIS environment.
  • Managing file systems and disk management using Solstice Disk suite.
  • Involved in Installing and configuring of NFS.
  • Configured kickstartserver and updating/applying patches to the servers using RedHat Satellite server.
  • Plan, design, Implementing, Installation and configuration Operating System Installation and upgrade on Red Hat Linux 4,5 & Solaris a 10.x on & HP-Dl585, DELL DRAC and VMware.
  • Configured Kick Start Server and build severs using kick-start server.
  • Build Yum repository Server for Development team to upload packages.
  • Written UNIX Shell scripts for monitoring & clean up old files.
  • Creating and deleting and managing user accounts and managing user quotas on the Network.
  • Installed LDAP server and configured it to Centreon & Nagios monitoring tool.
  • Administration/Configuration of Print Servers/Clients in the Network, planning, configuration and maintenance of connectivity for servers as well TCP/IP configuration.
  • Network trouble-shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop'.
  • Experience in Developing KORN, BASH, PERL, Python shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
  • Involved in Implementation of Oracle RAC and ORACLE ASM.
  • Administration and Troubleshooting RedHat servers running business critical application &Web Logic applications.
  • Installation of web logic, upgraded to service pack updates, installed. BEA patches, configuring and creation new domain, start and stop web logic server.
  • Production support of Apache, Apache HTTPD, JBoss, Tomcat including installation, configuration, management and troubleshooting.
  • Configure and maintain Windows 2000 Server that runs DNS, DHCP and active directory services.

Environment: Sun Solaris 10, 9, 8, Red Hat & SUSE Linux (4.X, 5.X. 6.X 7.X) ES & AS, HP-UX, IBM-AIX, Windows 2003/XP/2000

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