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Linux Systems Administrator Consultant Resume

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SUMMARY:

  • Confidential Linux 3/4/5/6; CentOS 3/4/5 Installation, configuration support and Administration
  • Solaris, 2.6/2.7/2.8/9/10 Sparc support and Systems Administration
  • Windows NT 4.0/95/98/2000/2003 and some knowledge and experience with Windows 2008/2012 Server
  • HP - UX 10.2/11.23 Support and Desktop Administration; high usage of SAM utility
  • Hardware - various hardware platforms for the above operating systems; anywhere from Sparc systems for Solaris, HP/Dell for Linux and Windows installs. Also, heavy work with HP Blade Centers BL460c and some older Dell Blade Centers (via remote access only), Sparc System, Itanium
  • VMware 3.5/4.0/5.1, vSphere 5 and VMware Workstation Pro 12 support, configuration and administration on both the server and client side
  • Storage tools; experienced in Disk partitioning with Format; use of SDS on Solaris; fdisk, Parted and LVM on Linux; SAM and LVM on HP-UX, Computer Management and Smart Array on Windows Systems
  • AWS experience with EC2, EIP, S3, ELB, CloudWatch monitoring; Management Console support and administration
  • EMC SAN Datacenter support and administration for software and hardware; HBA installations, cabling to switches, installing disks in arrays and performing some configurations
  • Network and Datacenter experience - racking/stacking servers, network connectivity cabling to Cisco switches, setting up APCs and power strips, LAN port maintenance and server-side network setups
  • Comfortable with server installs in hardware and software for Unix, Linux and Windows; configurations and management. Experience with jumpstart for Solaris and kickstart (including Cobbler) for Linux and some RIB wireless technologies
  • I is experienced in KSH and Bash scripting; knowledgeable in Python with some Perl modification experience for automation of server tasks and performance monitoring. Also training on C+ and Java scripting
  • Web based experience with Apache, Tomcat in supporting live websites and changing live content on demand and restarting the web process. Migrating over websites from one server to another with backups and rsync. Other related webserver application experience working with Netscape Enterprise Server, Apache, IBM HTTPD, iPlanet, LDAP and Oracle OAS Client installs
  • Windows Active Directory for Windows 2000/2003 and some 2008/2012 Server with highlights in user and printer support and administration and setup and use of Print and File-servers user management
  • Install, configure and support BMC Patrol 3.5/7 on Sun servers in Test and Production environments.
  • Good with open source and 3rd party application installs, configurations, support and administration
  • Experience working with IBM UrbanCode Deploy version 6.1 used to deploy Development code across Linux and Solaris servers for streaming; IBM Aspera Orchestrator version 2.4 used to deploy Development code across Linux and Solaris servers; some IBM MQ Series messaging and queries experience which was a part the IBM Websphere 6.0 suite
  • MySQL configurations for Nagios-Opsview monitoring tool setups for Clients that I monitored and supported server environments for

TECHNICAL SKILLS:Software:  Centos 5.2, RHEL 3/4/5, Redhat Cobbler kickstart, VMware 3.5, Nagios, Tomcat 5/6, Apache 2, JDK 1.6

Hardware: Dell 360, Dell 1850. 2850, HP Blade Center BL460c

PROFESSIONAL EXPERIENCE:

Confidential

Linux Systems Administrator Consultant

Responsibilities:

  • Ensure that STBs are maintained in a manner that supports delivery of services to multiple platforms, resilience, and performance
  • Ensuring continuity and quality by "owning” the resolution of issues. Tracking progress and escalating as appropriate unless resolution reached
  • Identifying faults and issues and recommending appropriate paths to resolution, and fixing as appropriate
  • Maintain documentation of all STB related application, equipment, resolution of issues, etc.
  • Undertake advanced systems administration tasks as required to support problem resolutions which includes use of IBM UrbanCode Deploy, Aspera Orchestrator and Weblogic for deployments handed down from Developers
  • Support QA teams needs with configuration, testing and certification of STBs
  • Contributing to process development and best practice. Looking at new ways to improve resilience, performance levels and supportability
  • Testing, analyzing, troubleshooting video streaming issues on different types of Set Top Boxes
  • RHEL package management; install and removal of server software, as necessary
  • Troubleshooting RHEL servers with log analysis and testing for use with RF CMTS software
  • Handle all installations, backups and upgrades of Video Session & Resource Management software via VSRM CLI and GUI
  • High usage of web based user interfaces for Cisco devices/applications such as VSRM, RFGW, QAMs for RSDVR, VOD and Active Video streaming purposes
  • Certification and stress testing for results between Cisco's RFGW and CBR8 devices and Harmonic’s NSG9000 devices via the Video Session & Resource Manager (VSRM) software and video channel streaming for frequency, bandwidth & encryption using Spectrum Analyzer hardware
  • Doing video engineering configurations on Cisco hardware & software applications via web based GUIs for sake of analyzing and testing of video streaming input/output
  • Lite Headend work with testing and troubleshooting of Cisco and Harmonic hardware; tracing and manipulation of various cables for management, RF feeds and Ethernet
  • Working with Cisco and Harmonic vendors through trouble tickets and cases to get issue resolved

Confidential

Senior Systems Administrator/Team Lead

Responsibilities:

  • Full remote System Administration support for Clients with physical/virtual servers in Unix/Linux/Windows
  • Nagios Opsview install, configuration, support and management for server monitoring for contract client base
  • Systems Admin MySQL configurations done for the completion of Nagios Opsview Server installations
  • Some Apache and HTTPD configuration and support for Clients
  • VMware/vSphere support and administration tasks - creating/cloning of VM guests, VMware tools install and support, snapshotting of guests and creation of OVA and OVF files for backup purposes
  • Package management, support and administration using pkgadd and YUM utilities for Unix/Linux servers and Windows update for the Windows environment
  • Server virtualization through Amazon Wed Services; creating instances and AMI, configure firewall, attach volumes and work with S3 content storage; AWS-EC2 SSL Certification support and configuration for HTTPS
  • Light configuration and support for Websphere 6.0/6.1 for upgrading and some portal support from the GUI
  • Windows Active Directory support for new and existing users and adding other OU objects into the domain, such as servers and computers; some login script creation work
  • Server Side NAS disk and file-system support using LVM, fdisk and parted for Linux/UNIX based servers
  • Worked with SAN Disk attachments on HP-UX lli v2 using SAM and FsWeb
  • Application configuration and implementation for various VPN software and other necessary products necessary for the System Admins and DBA teams to remain stable in Client environments.
  • Installation and testing of open source installations, configurations and implementations of third party software; Zabbix, Nagios
  • Troubleshooting, analysis, research and resolution support for operating system and application issues
  • Meetings with employer Sales and IT Management representatives to manage Client System Admin projects for the building of new servers and administrative support thereof and for on the spot support of a large client base
  • Delegating, coordinating and mentoring the Systems Administration team and developing new areas of technology that can be used to support new and existing clients when the need arises
  • Researching new technologies and creating documentation for the training of the Systems Administration team

Confidential

Tomcat/Linux Systems Administrator

Responsibilities:

  • Build Centos 5.2 & RHEL 5 servers using Redhat’s Cobbler kickstart via LILO & DRAC
  • VMware 3.5; build virtual servers & install OS via kickstart and ISOs mounted on ESX servers; capacity planning and server configurations
  • Use of YUM and RPM to install and upgrade server packages; post configurations where necessary
  • Install and configuration of EMC & Powermt Navisphere packages and configure for SAN use
  • Use of Logical Volume Manager CLI to increase the size of file systems; commands pvcreate, pvs, vgcreate, vgextend, lvcreate, lvs, lvextend with fdisk
  • Datacenter work when servers were down and had to be sourced or maintenance had to be done; cable tracing, hook up to KVM switches or mount with mouse, keyboards and monitors
  • Configure new servers into Nagios server configuration for system monitoring with different SLA levels
  • Adding new services to new servers via chkconfig command and /etc/init.d startup/shutdown scripts
  • Add servers to DNS servers using change management for DEV, QA and Production environments
  • Expanding LVM disk space on blades and VM servers; fdisk, pvcreate, vgcreate & lvcreate commands used
  • Install, configure and support of Tomcat 5 & 6; configuration of virtual hosts containers into server.xml file
  • Install, configure and support of Apache; configuration of the httpd.conf file; creating virtual hosts and setting up modules and security
  • Heavy TCP/IP protocol usage on a daily basis for administration and troubleshooting
  • Setup and testing of network interface bonding; repairing of broken bonds and TEMPeffective testing schemas for NIC redundancy
  • CLI & web GUI connection to HP and IBM Blade Centers & switches to install OSs support of terminal services
  • Scripting in ksh and bash for automation of mundane tasks that need to be done and placement into crontab
  • Project Management and documentation of technical procedures and instructions for team use and placing onto a shared network
  • Install and use of CommVault 7 & 8 backup software; use to backup, restore and monitor backups
  • Working on an online web based device inventory for induction into an ITIL CMDB database; all equipment added, i.e. servers, switches, Blade Centers and VMs

Confidential

Senior Unix Systems Administrator

Responsibilities:

  • Build Solaris 10 servers using jumpstart/CD software; build Red Hat 3.4/4.0/5.0 using CD software.
  • Support of malfunctioning hardware; communication with Redhat/Sun Microsystem Vendors for software/hardware problems. Adding more memory/swap if/when needed for remedy of bad performance.
  • Support of production business applications, wed servers and Confidential websites; perform break/fix if they hang, slow down or go down; performing starts/restarting apache/HTTPD when necessary
  • DNS support; entering new DNS entries or making alias for existing entries using DNS Bind 9.4.0. Performing redirects of new websites for businesses after the domain TEMPhas been registered through NIC.
  • Support of Apache httpd.conf configuration for creating virtual hosts and much of the same for Tomcat Jakarta using the server.xml configuration file.
  • Performance monitoring using Zabbix monitoring alert software.
  • Kernel tuning of some parameters such as shared memory in /etc/system and other parameters with NDD commands
  • Server Network support on both Solaris & Red hat; checking network connectivity and functionality vs. operating system services and remedying where necessary with tools such as NDD and MII-TOOL
  • Project Management based on server network functionality for upgrading to GIGE and datacenter inventory floor planning using MS Word, Excel & Visio.
  • Datacenter server management for new installs & maintenance; tracing cables & power supply circuit sources under floor boards, connecting to cisco devices.
  • Veritas Cluster Server Console administration for Sybase database management for UNIX servers; starting, stopping, freezing or unfreezing clusters and performing fail-over through the (GUI only, no CLI except running summaries reports about cluster health).
  • Support of Novell RDP backups and Veritas Netbackup 6.0; troubleshooting backup issues and performing restores
  • Daily use of TCP/IP for production support use

Speed Associate/Unix Systems Engineer

Confidential

Responsibilities:

  • Build Solaris 8/9/10 servers using jumpstart software; build Red Hat 3.4/4.0/5.0 using kickstart software. Familiarity with VmWare software in a practice environment.
  • Support of malfunctioning hardware; communication with Vendors for swapping out bad disks and rebuilding Meta devices using SDS and SVM commands. Adding more memory/swap if and when needed for remedy of bad performance.
  • Performance monitoring using OS commands of Solaris/Red Hat and working with Big Brother monitoring software. Tune some parameters such as shared memory in /etc/system, adding swap, prioritizing processes. Some use of zoning on Solaris 10 Sun Fire V1280 servers.
  • Datacenter server management; installs, maintenance; cabling, troubleshooting, cable tracing, hook up to switches
  • Server OS/Network and heavy TCP/IP support on both Solaris & Red hat; checking network connectivity and functionality vs. operating system services and remedying where necessary.
  • Work with autosys to start/stop or freeze boxed jobs and their dependencies.
  • Project Management; head the engineering of disaster recovery, datacenter build Trumbull Connecticut; meeting with business heads and helping them to plan their DR strategy; documentation with MS Word, Excel & MS Project,
  • Support of production business applications and wed servers; if they hang or go down.
  • Support of Apache httpd.conf configuration for creating virtual hosts and much of the same for Tomcat Jakarta using the server.xml configuration file.
  • Veritas Cluster Server, Cluster Manager Console administration for Sybase database management for Unix servers; starting, stopping, freezing or unfreezing clusters and performing fail-over through the GUI, only.
  • DNS support; entering new DNS entries or making alias for existing entries using DNS Bind 9.2.2/9.4.0. Creating new websites for businesses after the domain TEMPhas been registered through DNS.

Confidential

Distributed Computing Engineer II

Responsibilities:

  • General daily Unix System Administrator tasks in an Application type environment
  • Install & build Sun servers with Solaris 2.8/2.9 Operating Systems using SSH authentication
  • Use of Veritas Enterprise Administrator 3.0 to manage file-systems, disks, volumes and disk groups
  • Performance monitoring on all department business class servers; CPU, memory and space issues
  • Automation of processes and monitoring tools through korn and bourne shell scripting
  • Work with Netbackup 4.5 CLI commands to ensure successful backups Client servers; i.e. bplist, bpclimagelist, etc.
  • Use of TCP/IP protocols and network commands such as ndd to configure interfaces and troubleshoot
  • Manually maintaining information on Disaster Recovery servers, not cluster related
  • Install/uninstall applications WAS 6 software and profiles and third-party software products like Tivoli EQ
  • Administer to WebSphere v6 Environment and Application Servers on Sun Solaris servers
  • Process WAS requests and work closely with DEV department to configure, update, delete, install and re-build WAS application profiles
  • Deployment of EAR files backing up files for disaster recovery tactics and bundles deployment
  • Attend meeting and discuss livelihood of existent projects and time frame plus administrator issues; capacity/performance
  • Use EidRS Security System to apply for break glass privileges for root password
  • Comply to Symantec ESM server security alerts with administrative tasks that will resolve the flagged issue
  • Innovate/automate ways to perform administrative tasks; usually by way of research and scripting techniques
  • Use of PowerPoint and other Microsoft tools to make up documents and presentations

Confidential

Direct Senior UNIX Systems Admin

Responsibilities:

  • Solaris server builds 2.8/9/10; Kickstart of RHEL 3 Linux servers and configure for load balance and internet use
  • Install, configure Veritas Volume Management 3.5 and Netbackup Enterprise Server 6.0; use of vxvm CLI commands to monitor volume disks and groups as well as GUI use
  • Troubleshoot system hardware and software to resolve performance and communication issues
  • Setup and configuration of Solaris Volume Management/SDS with network maintenance
  • Datacenter management & maintenance of installed servers, load balancing devices server farms using RHEL3/4 in 2 off-site co-locations; put up rack mounts, power units, punch paneling and Ethernet cable stringing/setting
  • Knowledge of EMC, Clariions CX300 storage units and Navisphere software.
  • Manipulation of DNS server to switch traffic from one site to another site
  • Server hardware maintenance and troubleshooting and server log analysis.
  • System performance monitoring and identification of trouble spots.
  • Automation of Solaris and Linux processes for jumpstart, patching and auditing using korn and bash scripting
  • Use of SSH version 2 and port identification and maintenance through Foundry CLI commands
  • TCP/IP protocols use on a daily basis for remote administration and configuring network devices
  • Linux kernel compilations and upgrades for Red Hat Enterprise Linux 3.4
  • Use of Linux kickstart for AS server farm with Proliants and Power-edge servers
  • Work with Cisco 3548 & 6500 switches and HP IP Console View KVM Switch.
  • Manipulation of Apache configuration files for redirection and virtual IP use.
  • Monitor Internet traffic utilizing Web tools; Red Alert, Webmetrics, Keynote and DNS Server Farm monitor.

Confidential

UNIX Systems Administrator

Responsibilities:

  • Install hardware where necessary and install/upgrade Solaris 8/9 Operating system; perform hardware and software
  • Use of hyper-terminals trough laptops and terra-term application to install servers with a remote console connection.
  • Performances monitor and tuning; create korn/bourne shell scripts to assist in performance monitoring; perform lite kernel tuning with system file and NDD commands. Also work with Perfcap third party Capacity Planning software.
  • Setup and troubleshoot send-mail, and network routing table issues involving the network TCP/IP & communication.
  • Install Solstice Disk Suite 4.2.1 and set up meta-devices and mirroring; troubleshoot meta-device mirror issues; un-mirroring of Meta devices and replacement of bad disks. Work with Solaris Volume Management on Solaris 9 OS.
  • Run inventory on servers for patch, Boot PROM levels, packages and security for auditing purposes; acquire software media and update servers where necessary. Schedule change requests and maintenance via Remedy ticketing system
  • Set up of NIS servers Master, Slave and Client configurations. Create NIS push scripts to run every half-hour and work on other scripts to enhance NIS security, such as stopping Client password changes via yppasswd daemon.
  • Configure Jump Start servers and modify client profile, sysidconfig, begin and finish scripts for automated installs
  • Backup application database with tar, compress and use crontab to ftp file to VMS Raid where it is backed up daily.
  • Setup & configure Nestor 8Le Arrays for use as concatenated volume & mirrored volumes with Sparc & Intel servers
  • Install and configure SSH secure encryption on Solaris 8/9 servers and perform server lock downs
  • Install, configure and support BMC Patrol 3.5/7 on Sun servers in Test and Production environments.
  • Datacenter management & support of rack servers; cabling, hook up to KVM switches & connecting to Cisco devices
  • Install, configure and administer to Websense v5.2 Internet browser filterer and blocker as security measurement
  • Interface with Sun Engineers/Technicians to resolve technical issues that can be resolved over the phone.
  • Advise Management on new hardware and software for Sun environment and run capacity reports weekly
  • Build HP Proliant DL 360 and 380 servers for Microsoft Division; put together any hardware shipped with product
  • Install Windows 2000 and 2003 servers and Web an edition server for various uses around in the domain

Confidential 

Operations Support Technician

Responsibilities:

  • Administer to racked Dell and HP racked servers; racking, cabling with ethernet or fiber and connecting to switches and routers and testing connectivity
  • Backup task of changing tapes and sending them to Iron Mountain for storage and ordering back for restores
  • Running financial processes for store orders and inventorying
  • Monitoring with SNMPc graphic user interface for software & hardware issues and fixing or escalation

Confidential

Network Operating Sys Engineer

Responsibilities:

  • Build, install and configure servers. Install and setup NAS network structure. Install software, patches, and packages.
  • Setup file systems, swap and library primary partitions through format utility and Veritas Storage Administrator.
  • Set up Client/Server for a DNS network environment and implement routing tables and hardware; configure Ethernet and Quad Ethernet cards for the network; connect to Hubs, Bay Stacks, and Cisco Routers & Switches. Also, connect cat5 cables.
  • Install and configure middle ware products such as, Netscape Enterprise Server and Directory Server, IPlanet Application/Webserver and LDAP extension, Apache 3.12 & IBM HTTPD Websphere Application Server 4.0; setup of virtual IP’s on interface cards for internet use. Support of VPNs and Secure Tunnels for incoming content control and functionality of intranet site.
  • Install Web Trends Reporting Server a tool for Internet Website statistics, set up users and security permissions for product.
  • Install and configure Netegrity Siteminder product for Web site statistics; support, backup and troubleshoot process.
  • Daily use of TCP/IP protocols for file transferring and logon into remote sites and systems to perform work such as migration of whole web sites to different server and updating of content files.
  • Implementation of PVCS Version Control to change web contents and via version controlling; support and troubleshoot.
  • Daily use of Volume Management VXVM (GUI and CLI) and Veritas VMSA Storage Administer (GUI) software for disk and file system management; creation of volumes and plexes, grow swap, troubleshoot disks, file-systems and volumes; work performed on mirrors, concantenated and stripped volumes.
  • Monitor and support Oracle 7.3.4 /8i database and OAS; recycle in case of failures by connecting to server through SVRMGRL, PLSQL or Oraweb application user in case of OAS.
  • Administrate for Eagle Raptor Firewall version 6.0 GUI interface support; create net entities, set rules, open/close/add ports for VPN control and CLI programming of routing table for Internet and intranet LAN/WAN use.
  • Install Networker Legato Client/Server and perform daily backups and restores using DLT tape media in a StorageTek Timberwolf 9730 30 slot Juke Box. Also used tar and cpio commands for off schedule backups to 4MM tapes.
  • Build and install operating systems and upgrades to later versions. Partition disks with disk druid and fdisk utilities. Setup X server display functionality with MetroConfig, Xconfigurator and XFree86 utilities.
  • Set up Client Server DNS and routes on Network; Connect servers to hubs, routers and switches with cat5 cable.
  • Create small user/group community of Developers who need Linux functionality for project use.
  • Install Netscape Browser, Apache and Websphere Web-servers for project use.
  • Used tar and pax commands for backups to floppy disk drives, installed in I386 processor servers.
  • Partition disks with fdisk and other software oriented disk managers and Raid Managers for mirroring data.
  • Build and install operating systems and upgrade service packs and Y2K software with Internet Explorer.
  • Build Primary and Backup Domain Servers and Foresting environment of Active Directory in Windows 2000.
  • Set up Client Server DNS and routing. Connect servers to Cisco equipment hub, bay networks, routers & switches.
  • Create user accounts, file permissions/security and share directories over LAN and WAN environment.
  • Install IIS on NT servers and use FTP and security servers after upgrading to service pace 6.
  • Install Netscape browser and Enterprise Server and Apache Web-server for Development users
  • Install Web Trends Reporting Server 3.2, for Internet Website statistical reports.
  • Desktop support of user community and assisting Corporate Help Desk in resolving open Peregrine tickets.
  • Networker Legato Client/Server installs and performance of daily full/incremental backups of server farm using DLT tape media in StorageTek Timberwolf 9730 30 slot DLT robot, which I administered on a daily basis.
  • Troubleshooting of applications, file sharing, communication, backup, hardware and software issues and resolution on a timely base.

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