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Linux System Administrator Resume

Austin, TX

Summary:

  • More than 9 Years of IT experience as a Linux (Red Hat Enterprise, Oracle Enterprise Linux) and Solaris Systems Administrator in which incorporates implementation, configuration and administration in latest versions.
  • Expertise in building Servers using Kick start/PXE for Linux, Jumpstart for Solaris. Installation and configuration of Cisco UCS blade servers.
  • Expert in Installation, Configuration of Package and Patch Management.
  • Expertise in configuring and administering NIS, NIS+, NFS, DNS, LDAP, DHCP, Mail Servers.
  • Configuration and administration of EMC Vmax san array on SMC/SPA, creation of thin devices, meta devices and virtual devices as for database space allocation, administration on EMC Unispehere. Report generation for array disks, heat maps, I/O status.
  • Extensive experience in kernel Tuning, Performance Analysis, Load Balancing.
  • Configuration and administration of sun storagetek for database and application by array manager.
  • Experience in installation, configuration and volume/disk management using Veritas Volume Manager (VxVM), Solaris Volume Manager (SVM) and Veritas File System (VxFs) in Solaris and logical volume manager (LVM) in Linux. Installation and administration of zones on Solaris 10.
  • Experienced in Installation & Configuration of RAID Volume Management using VERITAS Volume Manager in Solaris, GFS (Global File System) on Linux and ZFS (Zeta byte file system) on Solaris.
  • Network configuration for interfaces, switch ports, Ethernet cards, host names, netmaks and routes details, DNS, NFS, LDAP, NTP and SNMP etc.
  • Expertise in User & Security administration, backup & recovery and maintaining Unix Account management. performance monitoring and kernel tuning and Load balancing.
  • MDS switch configuration and Brocade network adviser for san administration.
  • Installation and configuration of RedHat Network Satellite Server
  • Extensive experience in Linux performance monitoring by using top and prstat and load balancing, security setup, troubleshooting.
  • Installation and configuration of SCSI/ISCSI devices/Luns on Linux/Solaris Environment for NAS/SAN.
  • Experience in installation and tuning Web servers/Web application for Java applications on Linux.
  • Installation and configuration of Oracle RAC clusters on Linux/Solaris environment
  • Extensive experience in IPMP (IPmultipathing) in Solaris and Multipath and Bonding in Linux
  • Performed planning and implementing migrations on Solaris and Linux servers
  • Experience on VMware Installation, configuration and monitored virtual environments with ESX 4x,5x servers and VirtualCenter4x,5x.
  • Installation and configuration of guest Operating Systems like Windows, Linux and Solaris for different applications on ESXi environment.
  • Familiar with shell scripts run on Linux and Solaris environment and administration.
  • Work support to system problems 24x7 and resolving them in timely basis and ensuring high availability.
Technical Skills:
Operating Systems
Solaris 10,9 RedHat Linux 6, 5 and Windows 2003,2008 Servers. MS office, windows clients, Vmware , Intigration Servers
Server hardware
Sun Enterprise 250/220R/420R/2900,Sparc/Netra/Tseries, HP Proliant DL 585 /360 /385 /585 , HP Blade Servers(C7000). Cisco UCS blade servers B series.
Storage Hardware
Symmetrix EMC Vmax, FC, Brocade FC Switches, iSCSI/ FC Storage arrays, RAID Storage arrays, Sun Storage Tek.
Virtualization Products
Esxi 4x,5x,Vcenter 4x,5x
Databases
Oracle 10/11g RAC .
Application Servers
WebSphere Application Server 7.x, Jboss servers.
Tools
Microsoft Active Directory Server. Shell scripting, Puppet ,SMC,Monitoring,
Storage
EMC, Compellent and Sun storage Tek, Md /Brocade switch, SAN,NAS
Cluster server
Redhat Clusters, Verits Cluster
Network/Protocols
TCP/IP, FTP, SMTP, NFS,DNS,DHCP and HTTP. SCSI/ISCSI,

Professional Experience:
Confidential, Austin, TX
Linux System Administrator
Responsibilities:
  • Installing RHEL 6.x using kickstart and configured hostname, IP, DNS and NIS on HP blade servers to move them to production
  • Installation and configuration systems on puppet.
  • Daily systems administration, resolving systems issues, supporting different groups/apps.
  • Pre migration checks and configurations on all Linux servers and Oracle RAC environment.
  • Brocade network adviser administration for hosts/ luns for san administration.
  • Post migration checks, data base consistence on servers.
  • Clearing of servers from existing zones, delete rpm packages, dead paths and asm disks details.
  • Managing Brocade network manager for zone configuration, lun management and servers.
  • Worked on installation and configuration on Redhat Cluster Suite and Oracle RAC.
  • Network configuration for host names, netmaks and routes details, NFS, DNS, DHCP, FTP, LDAP, and Samba, Apache servers.
  • Performed Memory and Swap management to improve optimization and performance of the servers.
  • Experienced in User and Group administration and security issues, sudo permissions.
  • Performed upgrades of Packages and Patches in Solaris and Linux.
  • Scheduling cron jobs such as for Backup, System Monitoring and removal of unnecessary files.
  • VMware installation, configuration and monitored with virtual environments with ESX 5x and VCenter
  • Installation patches/packages, running different scripts for performance, cleaning up old files.
  • Configured and maintained System Security using IPTABLES and TCPWRAPPERS in Linux.
  • Performed memory and swap management to improve optimization and performance of the servers.
  • Configuration for ISCSI devices by using tools like open-e and open filer.
  • Providing day-to-day user administration like adding/deleting users and managing user queries.
  • Responsible for 24x7 Server/OS (Linux/Unix) and Networking support. Delivered high quality Sys Admin service on a M2M manufacturing infrastructure..
  • Developed and implemented a complete new hardware and software automated manufacturing test infrastructure collaborating with Apple design and development team for most advanced Mac Pro system started from NPI until final products launched in 2014.
Confidential, Morrisville, NC
Sr. Linux Administrator
Responsibilities:
  • Installation, configuration and administration of Solaris on sparc Netra T5440 and x86 64 environment to Customer lab support for Cisco policy manager to At&t tele requirements.
  • Oracle 11g Rac installation and configuration for applications on Solaris and Linux platform.
  • deployment and configuration of HP G6 and HP G7 blade servers for production environment.
  • Network configuration and testing for different interfaces connected to PAS(policy access system).
  • Pxe boot Installation and configuration Cisco UCS blade servers(B series) on Linux platform.
  • Network configuration for hosts file, interfaces and netmasks and routing, switch configurations.
  • Configuring Solaris, Redhat Linux servers with Jumpstart and kick start.
  • Installation and configuration of SCSI/ISCSI devices/Luns on Linux/Solaris Environment.
  • Configuration and administration of EMC Vmax by using SMC/SPA, creation of thin devices, meta devices and virtual devices as per project document for database space allocation. Familiar with symcli commands, symapi server and solutions enabler. Administration of EMC Unispehere.
  • Worked on installation of Veritas Volume Manager (VxVM) and file system.
  • Performed Memory and Swap management to improve optimization and performance of the servers.
  • Experienced with working in Solaris Volume Manager (SVM), creating and maintaining meta data base. Meta devices, concatenation/striping, mirroring the devices.
  • Created and Managed Zettabyte file system (ZFS) in Solaris 10 and Linux Servers. created zpools.
  • Experienced in User and Group administration and security issues.
  • Performed upgrades of Packages and Patches in Solaris and Linux.
  • Installed, configured and managed Oracle Real Application Cluster (RAC) on Solaris and Linux.
  • Network configuration for interfaces, switch ports, Ethernet cards, host names, netmaks and routes details, DNS, NFS, LDAP, NTP and SNMP etc.
  • Scheduling cron Jobs such as for system monitoring and removal of unnecessary files.
  • Providing day-to-day user administration like adding/deleting users and managing user queries.
  • Configuration and manage Redhat Cluster Suite in Linux Servers
  • Configured and managed Global File System (GFS) in Linux Servers, Creating and managing Cluster suite using GFS file system.
  • Performed enable/disable the processes depends on the requirement and minimize the load average of the server using Service Management Facility (SMF) in Solaris 10.
  • Performed installation, configuration, upgrades, Package administration and support for Linux systems on client side.
  • Creating partitions according to requirements, creating new file system or growing existing one over the hard drives and managing the file system.
  • VMware installation and monitored with virtual environments with ESX 4.x.5x and VCenter 4x.5x
Confidential, Memphis, TN
Sr Linux/Unix Administrator
Responsibilities:
  • Installation, Configuration of Linux, Solaris operating systems on different hardware environments.
  • Configuring Solaris, Redhat Linux Servers with Jumpstart and kick start.
  • Resolving production issues/tickets by using ticketing tool.
  • Installation and configuration and disk and file system management using Veritas Volume Manager (VxVM).
  • Performed Memory and Swap management to improve optimization and performance of the servers.
  • Experienced with working in Solaris Volume Manager (SVM), creating and maintaining meta data base. Creating Meta devices.
  • Multipath configuration on SAN devices/disks on Linux to keep the disks names persistent after reboot.
  • Network configuration for interfaces, switch ports, Ethernet cards, host names, netmaks and routes details, DNS, NFS, LDAP, NTP and SNMP etc.
  • Scheduling cron Jobs such as for backup, system Monitoring and removal of unnecessary files.
  • Configuration of DNS servers on Linux for zones file, adding hosts to files.
  • Created and Managed Zettabyte file system (ZFS) in Solaris 10 and Linux Servers. Created zpools.
  • Performed upgrades of Packages and Patches in Solaris and Linux.
  • Configuration San for ISCSI devices by using 3rd party tools open e and open filer.
  • Installed and configured Oracle Real Application Cluster (RAC) on Solaris and Linux Servers.
  • creation and scheduling cron jobs for backup, system monitoring and removal of unnecessary files.
  • Worked as Cisco Context engineer with sole responsibility of design, develop, test and create automated scripts on Linux/UNIX platform, used for testing Cisco enterprise routers and switches in a distribute network environment covering various Contract manufacturing site from all over the world.
  • Responsible for the Server/Linux OS support, which includes installation, configuration, data storage solution, network connectivity with Cisco IOS/IOX, firewall setup and security for manufacturing Cisco routers and Apple Mac Pro in a distributed network environment.
  • Sole responsibility of administering test network infrastructure, server performance monitoring, analysis and troubleshooting hardware, and software in distributed manufacturing networks.
  • Worked closely with manufacturing team and Cisco operation management to ensure all those infrastructures are available with optimal performance 24X7 and delivered the products before deadline.
Confidential, Woonsocket, RI
Role: Linux System Administrator
Responsibilities
  • Primary responsibility includes building and supporting Red hat Linux 3, 4,5,6, Solaris, Windows servers for Enterprise Preference Management System project.
  • Automated the backup process to the disaster recovery centers using pub keys.
  • Worked on building Linux systems for configuration of Data warehouse.
  • Explore kernel modules and variants, tune kernel parameters, manage devices, and monitor processes and resources during configuration of ware house jobs.
  • Configured dynamic and static network settings for IPv4 and filter packets, Review file system management concepts, removable media and configure NFS shares with autofs.
  • Configuration and deployment of Nagios freeware monitoring system for managing all the Linux warehouse systems.
  • Worked on Veritas Volume Manager and LVM to increase the storage capacity of the servers.
  • Performed error analysis and recovery, documentation and procedures required for reference.
  • Worked on Network configuration of Redhat servers and firewall configurations for the warehouse environment.
  • Worked with Red Hat Package Manager (RPM), YUM and YAST
  • Environment: Red Hat Enterprise Linux 4/5/6, Sun Solaris 8/9/10, Veritas Cluster Server, Veritas Volume Manager, Oracle 9i, HP UX, IBM AIX, WebLogic, Oracle RAC/ASM, MS Windows 2003 server.
Confidential, Roseland, NJ
Solaris Linux Administrator
Responsibilities:
  • Responsible for day-to-day system Administration for Windows and Linux, Solaris servers.
  • Day-to-day functional administration tasks, as well as application-specific technical support.
  • On hand experience on Solaris OS installation using jumpstart, Configuration and troubleshooting.
  • Creating users under different groups, working with Files and Directories & regular trouble shooting, server and client related problems.
  • Password configurations, Disk management, process monitoring, Boot up and Shutdown procedures.
  • Recommended Sun OS kernel/OBP patch upgrade for production/development servers.
  • Maintaining the regular backups using tar, ufsdump, ufsrestore, Snap shot backup etc.
  • Configuring SWAP, NFS servers and clients with AutoFS and NIS, Syslog messages.
  • Configuring the services for sharing the resources from UNIX such as remote login through TELNET, FTP.
  • Checking alert logs and trace files. File System maintenance, performance tuning.
  • System error and performance analysis with tools like Explorer, sun-checkup, core dumps and ATS Resolution Methods.
  • Printer and Package Administration and providing the organization with complete Internet and intranet facilities, Perception in system Trouble Shooting and Knowledge in System hardware and maintenance.
  • Providing 24x7 Sun hardware and software support for workstations, entry- and middle- range servers, storage products and the Solaris Operating Environment.
  • Solaris 9, Solaris 10, IBM AIX 4.x 5.x, HP-UX 10.x 11.x & Linux RedHat AS/ES, and System/Support Administration on Sun Fire, V-series & E-series which includes 15k, 25k, E4500, E6500, E10k, E250, E450, Sun Fire 220R, Sun Fire 440R, SUN E450, Servers

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