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Systems Engineer Resume

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Kansas City, KS

SUMMARY

  • Over 9 years of professional experience in Linux/Unix Administration
  • Experience in Installation, Configuration, Upgradation, Support & Maintenance of RedHat Enterprise Linux and Sun Solaris servers
  • Experience in implementing Virtualization using VMware
  • Experience in building Servers using Kickstart for Linux, Jumpstart for Solaris
  • Experience in RPM Package Administration for installing, upgrading, and checking dependencies in RedHat
  • Extensive administration experience in Storage Area Network (SAN) and Network Attached Storage (NAS)
  • Good experience in setting up RAID0, RAID0+1 and RAID5 for redundancy
  • Experience in Veritas NetBackup with proficiency in System Backup and Recovery from tapes
  • Experience and implementation of services like NFS, NIS, NIS+, DNS, DHCP, LDAP, Mail servers and Samba servers
  • Responsible for creating, configuring and maintaining Zones and installing applications on individual zones (Global & Local zones)
  • Experience in implementing and configuring of Logical Volume Manager (LVM), Solaris Volume Manager (SVM), Veritas Volume Manager (VxVM)
  • Responsible for setting up Disaster Recovery environment for Linux servers and implemented all the DR procedures as per the guidelines
  • Experience in Performance Monitoring of Kernel parameters, Memory, Disks, Network
  • Knowledge in configuring disks in EMC & Hitachi SAN environment including checking SAN visibility & multipathing
  • Expertise in setting up SSH, SCP, SFTP connectivity between Linux/Unix hosts
  • Expertise in configuring Bonding in Linux and IPMP in Solaris
  • Creating and maintaining user accounts, permissions, disk space and process monitoring
  • Proficient in installation and configuration of Web Sphere Applications on Linux
  • Good exposure to Datacenter environment

TECHNICAL SKILLS

Operating Systems: RedHat Enterprise Linux, Oracle Enterprise Linux, Sun Solaris, CentOS, Fedora, SLES, Ubuntu, Window

Hardware: HP ProLiant DL160/DL185/DL585/DL580/DL360/DL380/BL460c, Dell Power Edge 2400/2450/2850/2950 , Cisco UCS Blades, Sun Netra Servers, SunFire V210/V240/V440/V480/V880, Sun Enterprise E6900/15k/25k/M5k

Languages: C, C++, HTML, KSH, CSH, Bash

Networking: TCP/IP, NFS, Telnet, FTP, DNS, DHCP, NAT, ifconfig, route, Netstat, HTTP, SAMBA

Web Servers: Apache Tomcat, Jboss, WebLogic & Web Sphere

Security: SUDO, SSH, SSL

Tools: Veritas Volume Manager, Veritas Cluster Server (VCS), Veritas Netbackup Solstice Disk Suite, VMware ESXi, Virtual ticket, Virtual Request, Infoman, ServiceNow, ResolveIT, Putty, ReflectionX, MtPutty, MRemoteNG, QIP, HEAT, Solarwinds

PROFESSIONAL EXPERIENCE

Confidential, Kansas City, KS

Systems Engineer

Responsibilities:

  • Responsible for maintaining RHEL, OEL & Solaris servers
  • Configured Volume groups and Logical volumes, extended Logical volumes & file systems as per needs for Linux servers
  • Joined newly built servers to Active Directory domains
  • Shared file systems through NFS for application portability
  • Maintained Oracle RAC clusters
  • Configured OSWatcher for Oracle database hosts
  • Worked with DBA's to tune kernel parameters for Oracle DB on Linux
  • Customized log rotation scripts according to application needs
  • Configured kdump for Linux servers
  • Built virtualized Linux servers on VMware ESXi and Blade servers to host multiple applications on same chassis across different server hosts
  • Cloned VMware servers from templates
  • Worked with storage team to add luns and to add hosts to export list of the Isilon shares
  • Used PowerPath for multipathing on Linux Servers
  • Worked with windows team to add new users to Active Directory
  • Tuned kernel parameters for Tivoli Storage Manager servers
  • Configured monitoring for servers using Solarwinds
  • Created service requests with Oracle, RedHat, Centrify in order findout the root cause of the issues that arise
  • Performed go - live checks for newly built serverr
  • Participated in weekly On-call rotation

Environment: RHEL 5/6, OEL 6, Solaris 8/10, VMware ESXi, HP DL 380/DL 580/DL 585, Cisco UCS Blades, Oracle RAC, TSM, Centrify, Solarwinds, LDAP, Veritas Volume Manager, PowerPath

Confidential, Irving, TX

Sr. Linux Administrator

Responsibilities:

  • Worked on projects based of Client requirements which involved Unica, ETL, Web, Oracle DB standalone & Oracle RAC cluster installations on RHEL
  • Involved in day-to-day project meetings with PMO's and Client teams to ensure project deadlines were met
  • Configured kickstart server and updating/applying kernel patches to servers using RedHat Satellite server
  • Worked closely with DataCenter facilities team to rack & stack new hardware
  • Responsible for Linux server builds from scratch and maintaing them until they go-live
  • Installed RHEL on VMware guests
  • Monitoring disk, cpu, memory and increasing them as and when required on VMware guests
  • Installed and configured VAS/QAS authentication services on RedHat servers
  • Worked with Client teams in setting up user accesses and permissioning sudo rights to users for performing certain acitivites
  • Worked closely with Windows admins to register users in Acitve Directory
  • Worked closely with network team to open firewall requests to setup communication between database, ETL & Web servers
  • Trunked VLAN's for Blades and VMware guests
  • Changed configuration channels in RedHat Satellite for applying latest kernel patches to servers
  • Built Oracle RAC clusters on RedHat servers, configured private interconnects, maintaining true redundancy between public & private NIC's
  • Worked with network team to configure private VLAN's for Oracle RAC servers
  • Configued Oracle ASM disks for database servers
  • Tuning kernel parameters for Oracle database servers for optimum performance
  • Installed FusionIO cards on HP servers and configured them
  • Worked closely with Storage team to allocate SAN intime to ensure server builds are completed
  • Used native multipathing tools to configure storage on Linux
  • Worked in DataCenter to install memory and fiber cards on servers
  • Configured ILO's for HP servers using hponcfg utility
  • Installed Veritas Netbackup & configured backups
  • Configured bonding on Linux servers to have true redundancy
  • Made sure all paper work is upto date for Opertaional turnover of servers once the go-live is completed

Environment: RHEL 5/6, RedHat Satellite Server, VMware ESXi, HP Proliant DL380/DL580/BL 460c, Oracle RAC, Veritas Netbackup, Apache, Solarwinds, VAS/QAS

Confidential, Irving, TX

Unix/Linux Administrator

Responsibilities:

  • Active administration of thousands of production, contingency, uat and development servers comprising RedHat Linux & Sun Solaris servers
  • Participated in root-cause analysis of recurring issues
  • Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring
  • Configuring sudo and granting root permission to users for performing certain activities
  • Provide login & SCSU access for users into the servers by creating and upgrading the appropriate netgroup tables in NIS+ in all domains
  • Troubleshoot & Resolve user login issues and SCSU access
  • Coordinating with different support teams in resolving the critical file system and process related issues
  • Basic shell scripting for automation of system administration tasks
  • Monitoring system resources, logs, disk usage, scheduling backups and restore
  • Installed and configured Tivoli montinoring on all servers
  • Responding to Tivoli & AlarmPoint alerts in timely manner
  • Experience in Performance Monitoring of CPU, Memory, Disks, and Network using various monitoring tools like SAR and top
  • Adding of Swap Space as and when required
  • Worked closely with DataCenter teams to rack & stack the new hardware
  • Configuring IP's for new servers using QIP tool
  • Coordinating with team members to push the newly builds into QA so that application users can perform testing
  • Install, configure and manage RedHat and Solaris servers
  • Installation of RedHat servers using custom Jumpstart with LVM as volume manager
  • Installed SCSI Storage media and created volumes with high availability using different RAID technologies like RAID 0, RAID 0+1 and RAID 5
  • Created VM's and deployed RedHat on VMware based VM's
  • Configured bonding on RedHat servers & IPMP on Solaris servers
  • Performing Kernel & SANstack upgrades for RedHat & Solaris servers
  • Ensured automatic startup of different services using chkconfig
  • Creation and scheduling of Cron Jobs, System Monitoring and removal of unnecessary files
  • Space allocation to the metadevices, detaching and clearing the devices if not in use
  • Created local zones on Solaris 10, changing the specs as per the application requirment
  • Patched Solaris global zones running on M5k hardware, where local zones are clustered
  • Involved in ongoing Solaris to RedHat migration
  • Generated SSH keys for functional users and configured SFTP
  • Installed rpm & dstream packages on RedHat & Solaris servers respectively
  • Installed and Configured NFS, FTP, DNS, LDAP, Apache, Wepshere, Weblogic and Samba
  • Troubleshooting issues related to NFS both at Client side & Server side
  • Worked on NIS+ to LDAP migration of users
  • Installed, configured and maintained Veritas Cluster Server on RedHat servers for failover and redundancy purposes
  • Configured new service groups and resources for new application in Veritas Cluster Servers
  • Installed and Configured Veritas Netbackup on RedHat & Solaris servers
  • Maintaining Netbackup in a Unix infrastructure, enhancing as neccessary to meet changing requirements, creating documentation and training, performance and capacity analysis, and troubleshooting slow running backups
  • Installation and configuration of Veritas Volume Manager, Veritas File System
  • Extensive use of volume management tool using Logical Volume Manager to create disk groups
  • Disk management - Adding disk volumes, extending disk volumes, creating File systems etc using LVM and VxVM
  • Solaris boot disk mirroring using SVM and VxVM
  • Powerpath configuration for SAN multipathing
  • Troubleshoot dual path issues on servers using Veritas DMP & Powerpath
  • Worked closely with NAS team, on procurring new NAS filers and mounting them on RedHat & Solaris servers
  • Participated in NAS refresh, migrating EOL NAS filers
  • Worked closely with SAN team, getting the luns & creating new filesystems & also adding them to the existing file systems
  • Particiapted in SAN Tech Refresh, migrating EOL SAN frames
  • Worked on server consolidation and migration project within data center and from one data center to another data centers
  • Worked on Upgrading emulex cards, firmware for HBA to the current revision levels
  • Participation in change control activities, Involved in Memory sizing of different applications
  • Complete periodic checks of production and development systems, CPU utilization, memory profiles, disk utilization, network connectivity, system log files, etc
  • Experience on Virtual Ticket, Virtual Request, Infoman and Resolve IT ticketing Tools
  • Experience in supporting different Hardware management & break fix issues
  • Opening an Oracle case for system Software and Hardware issues and coordinating with SUN FE in resolving the issues during off hours
  • Working on problem tickets with different vendors to find the RCA for Critical issues
  • Upgrade Firmware & BIOS microcode on all servers to the latest recommended level
  • On-call on a rotation basis (24/7)

Environment: Solaris 8,10, RHEL 3,4,5,6, VMware ESXi, SUN Netra Servers, Sun Enterprise E6900/15k/25k/M5k, SunFire V210/V240/V440/V480/V880, HP Proliant DL 360, DL 380, DL 580, DL 585, BL 460c, Dell Power Edge 2850, 2950, LDAP, NIS+, Veritas NetBackup, Veritas Filesystem, Veritas Volume Manager, Veritas Cluster Server, WebSphere, WebLogic, Apache, Tivoli.

Confidential, Saint Louis, MO

Linux Administrator

Responsibilities:

  • Participate in Product Development Roadmaps, Setup Development server's for Rapid Application Prototyping
  • Installed and configured VMware ESXi created VMs and deployed Linux on VMware based VMs
  • Migration of Guest OS from GSX to ESX using VMware Converter
  • Migration of physical servers to ESX using VMware Converter
  • Worked on VMware ESX virtualization for testing and implementing servers
  • Installed VMware ESX server farm with 25 physical nodes running with an average of 15 virtual Linux nodes per server
  • Responsible for monitoring and maintaining physical and virtual servers and solving the issues as when they arise
  • Implemented Virtual Machine Cloning, Snapshots, Backup Policy
  • Backing up of VMDK files using VMware snapshot feature
  • Co-ordinate and Assist project delivery time lines
  • Used Scripting for backup, recovery, Jumpstart automation and monitoring
  • Provide 24/7 Product Support for Mission critical customer installations
  • Production Readiness Validation Testing for VxGrid Product releases
  • Implement Checkpoint Firewall, Firewall Policy, Access Roles
  • Implement Software Security Firewall,VLANS using PFSense
  • Configure data-center wide Routing, DHCP, DNS
  • Install, configure and manage Linux Servers
  • Installation of Linux Servers using kickstart and providing support for various applications running on Linux environment
  • Install and configure RPM builds and hardware installation
  • Setup Postfix/Dovecot SMTP server for multi-domain both in-house and for customer implementation
  • Setup domain wide whitelist/blacklist spam filter using SPAMAssassin
  • Configure Apache/NGINX webserver with Mod Proxy Loadbalancer, Mod SSL
  • Installation and configuration of Veritas Volume Manager
  • Provided Support and administered Veritas Volume Manager, Veritas File System and Veritas Cluster Server
  • Install and configure PHP, MySQL and Custom PHP Applications like Joomla/OSTicket
  • Administered disk groups, subdisks, plexes, and volumes using Veritas volume manager
  • Day to day administration of SAN and NAS infrastructure
  • Configure Pound Loadbalancer setup loadbalancer policy for smtp/http and outbound proxies
  • Setup Nagios for Monitoring, Operating system variables like CPU/Memory/Disk and SNMP

Environment: RHEL 3,4,5, CentOS 4,5, SLES 9,10,11, Fedora 9,10,11(beta), Ubuntu 8.04, 8.10, 9.04 Server, Debian SID, VMware ESX, Veritas File System, Veritas Volume Manager, Veritas Cluster Server, HP Proliant DL 360, Dell Power Edge 2400, 2450, Nagios

Confidential

System Administrator

Responsibilities:

  • Install, configure, and maintain servers using enterprise standards and build process
  • Provide problem management support for the production site and services - troubleshoot technical problems as they arise
  • Member of server management operational team
  • Implemented VMware ESX server to provide multiple virtual hardware platforms
  • Migrated obsolete hardware platforms to VMs via VMware Converter
  • Install VMware Tools on all major OS and troubleshoot software device driver
  • Install, configure and manage RedHat/Windows Servers
  • Configured host-based and user-based security for the service using tcp wrappers
  • Configured Mail Sever using Sendmail on RedHat server
  • Providing administration and troubleshooting user related problems
  • Work closely with DBAs, software partners and Staff in a proactive and solution oriented manner
  • Deploy Tomcat/JBoss clustered application servers in development environment
  • Setup/Configure MySQL database, user roles, sql dump scripts and drbd replication
  • Working knowledge on LDAP, Active Directory
  • Installing and configuring of NFS
  • Extensive knowledge of debugging scripts/log file validations
  • Assist code deployment automation with Shell Scripts
  • Patch Management, Package Installation/Upgrades and Kernel upgrades
  • Installation and Configuration of Web servers like Apache, Jakarta Tomcat
  • Performed Server design engineering, configuration and troubleshooting of all components, hardware and software with 32 and 64 bit processors, Intel and AMD based
  • Administering the software packages and patches on servers as well as workstations
  • Configure Nagios Monitoring and configure plugins to get snmp data from the routers and server’s
  • Used Webalizer to trend web server archive log retention logs
  • Used utilities like VNC, Nessus, Ethereal and Port Monitors
  • Performed the administration of the DNS and zone configuration

Environment: RHEL 3,4, CentOS 4, SLES 9,10, Windows 2003 Standard and Advanced Servers, VMware ESX, Nagios, LDAP, Tomcat, JBoss

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