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Linux System Administrator Resume Profile

SUMMARY

  • Worked in heterogeneous environment. Installing, configuring and administration on Red Hat Linux 8, 9 and RH AS 2.1, RHEL 3.x, 4.x, Suse Linux Enterprise Server SLES 10.x, HP-UX 11.00, 11i, Windows NT, 2000 and 2003 Servers.
  • Worked on Migration using HPUX Redhat Logical Volume Manager at Host Level and supported SAN Based migrations.
  • Installed, configured and maintained UNIX/LINUX servers in an enterprise environment Linux, Solaris, Red Hat Linux AS 3.0 /4.0/5.x SUN Solaris 8, 9 and 10 on Sun, Dell, and HP x 86 Servers.
  • rahul prominentitsol.com 972-325-1170 System Administrator with over 7 years of experience in Administration , Development and support of LAN/WAN networks on multi platforms like Redhat 3/4/5/6 AS 2.1, 3, 4.x, SUSE 8,9,10 11, CentOS, Solaris 8,9,10 11, HPUX 11.0,11,23 31, IBM AIX 5.x, 6.x and Windows 2000, 2003 and Solaris 7, 8, 9, 10.
  • Installed OS by using Jumpstart, Kickstart, NIM and Ignite methods.
  • Experienced with the installation, configuration of Veritas Storage Foundation 3.5, 4.0, 4.1 and 5 and volume management using Solaris Volume Manager SVM on Solaris and Logical Volume Manager LVM on Linux and experienced in RAID 1, 5, 51, 10, 01 configuration.
  • Experience working with Vblock Infrastructure to perform Virtualization using VMWare ESX, vSphere on RHEL servers.
  • Implemented and Enhanced the Existing Scripts which are developed in Shell, Perl, and SQL.

Experience in applying patches on Solaris and Linux servers.

  • Experience in the implementation of High Availability environment using Veritas Cluster Server 4.1 with agents for Sendmail, WebLogic and NFS.
  • Experience working Dev, QA and PROD environments working on Change Incident requests.
  • Worked on SUN enterprise and midrange servers like SunFire 25K,M5000, M8000,6900, 6800, 4900, 4800, HP Blade System c7000, DL 380, 580, Dell PowerEdge M600, R900, 2900, 2950.
  • Set up and administered Domain Name Server DNS server on SUN Solaris, Redhat and FreeBSD for the Enterprise using Bind. Experience with the installation of applications like Sun One Web Server 6.x, Apache, WebLogic, JBoss, MQ Series, Tibco and Vignette.
  • Experienced in installation and configuration of SAMBA.
  • Experience in network administration, deploying and troubleshooting of DNS, LDAP, NIS, NFS and DHCP etc.
  • Setup, Implementation, Configuration of Backup/Restore solutions for Disaster/Business Recovery of clients using Veritas Net-n-backup on UNIX and LINUX platform.
  • Setting up NIS/NFS on RedHat servers, setting up JBOSS cluster and oracle 10g cluster, configuring load-balancing on apache, Redhat Linux 4.x/5.x/6.x.
  • Good knowledge invirtualization using VMWARE ESX 3.5, 4.0 for Redhat Linux and Solaris x 86 platforms.
  • Strong technical background in Storage, Disk Management, Logical Volume Management LVM and logical partitioning
  • Knowledge of networking TCP/IP, Ethernet , NIS, DNS, NFS, DHCP, SMTP and RAID.
  • WorkedonGrub,PXEboot,Kickstart,Packages,Yum,RPMs,LVM,BootfromSAN,filesystemconfiguration.
  • TroubleshootingHardwareandOperatingsystemrelatedissue.

Technical Skills:

  • Operating Systems
  • Linux Red Hat SUSE , Solaris 10/9/8, HP-UX 11.0, 11.11, 11.23, 11.31, IBM AIX 4.3/5.x , SLES 8,9,10 11, Windows NT /2000/2003.
  • Hardware
  • M5000, M8000, T5220, T5240 Sun E15K, E25K, Sun Fire 6800, Sun Fire 4900, Sun Fire 3800, Sun Fire 490, Sun Fire 280, v880, v890, Sun Enterprise Servers E6500, E4500, E3500, Work Group Servers E450, E420, E250, E220, Netra 1405, Netra X1, Ultra 80, 60, 30, 10, 5, 2, 1, Intel Servers, Extreme network and Cisco switches, Brocade Switches, A1000, A5200, 3510, 3511, D1000, Sun Store Edge T3, 9980
  • Networking
  • TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.
  • Web Technologies
  • Tomcat, APACHE 2.x, 3.x, Web Logic 8/9/10 Web Sphere 4.0/5.0
  • Programming Languages
  • C, UNIX Shell Scripting, Perl Scripting, HTML, Perl, VB.
  • Backup solutions
  • Veritas Netbackup 4.5, 5, Legato Networker 6.1.x, 7.2.x
  • Third Party Software
  • VERITAS Volume Manager, VERITAS Cluster Service VCS , HP Service Guard , Sun Cluster, EMC Storage, RAID Technologies, SSL
  • Protocol
  • TCP/IP,UDP RIP, OSPF, EIGRP, IGRP, SNMP, SMTP, TELNET
  • File Systems
  • UFS, VxFS, ext2, ext3, ZFS
  • Volume Management
  • Veritas Volume Manager/ Foundation Suite 3.2, 4.x, 5, SVM, LVM

Professional Experience:

Sr. Solaris/Linux System Administrator

Responsibilities:

  • Involved in UNIX/LINUX System and Network administration in Sun Solaris 9/10 , Linux RedHat 5/6 servers running different Database and Middleware Applications.
  • Storage Provisioning, Volume and Filesystem Management using LVM, Veritas Volume Manager and Veritas Filesystem Veritas Storage Foundation , Configuring ZFS filesystems.
  • Supported around 200 whole root zones running on Solaris 10 environment.
  • Maintained 15 VMware ESX server connected with two EMC VNX SAN box and managed of two Cisco MDS switch using Fabric Device management tool
  • Clustering solutions for High Availability using tools such as Veritas Cluster Server VCS , MSCS, RHCS
  • Configuring and maintaining virtual server environment using VMWARE ESX, VCenter,VSphere, and Solaris 10 Zones.
  • Installation and Configuration of Sun Enterprise Servers, HP and IBM Blade Servers C6000 C7000 , HP Itanium, Configured Enterprise UNIX/LINUX systems in heterogeneous environment Linux, Solaris with SAN/NAS infrastructure across multiple sites on mission business critical systems
  • Setup, Implementation, Configuration, documentation of Backup/Restore solutions for Disaster/Business Recovery of clients using Veritas Netbackup on UNIX and LINUX platform
  • Performed quarterly patching of Linux, Solaris servers on regular schedule.
  • Good knowledge of RAID groups and setting up NFS,CIFS and iSCSI protocols in SAN/NAS environment on Redhat LINUX
  • Implementation of oracle RAC 10g on HPUX blades and Itanium servers with Redhat Linux RHEL 5.x/6.x along with SAN storage on EVAs.
  • Involved and set up migration for UNIX/Linux server and SAN storage between data centers and also application migration and testing. This included SAN/Application migration and testing various functionalities of key applications
  • Installing, setup of proliant blade BL,DL series with fiber channel connectivity, Cisco GESM interconnect switch, configuring the connectivity, setting up JBOSS cluster, setting up oracle RAC cluster, configuring load-balancing on apache, on Redhat Linux 5.x Setting up NIS/NFS on RedHat servers.
  • Setting up JBoss cluster and configuring apache with JBoss on RetHat Linux. Proxy serving with Apache. Troubleshooting Apache with JBoss and Mod jk troubleshootingfor the clients.
  • Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.

Confidential

Sr. Linux/UNIX Administrator

Responsibilities:

  • Good understanding of SRDF and Time finder on EMC SAN.
  • Build Linux server using kickstart and supported 200 RHEL servers installations.
  • Experience working with TSM and AVAMAR backup tools to perform backup and restore operations.
  • Data migration on VERITAS clusters from 3par to EMCVmax array.
  • Cold migration on VMware Vsphere client ESX servers from one data store to other.
  • Experience working with NFS mounts from NAS devices like EMC Celerra and NetApp devices.
  • Creating raw devices and migrating data for Oracle RAC cluster and VERITAS Cluster environments.
  • Installation and upgrade of EMC Power path, Host bus adapters.
  • Migrated Data online on Red hat Linux and HPUX servers using EMC Open Migrator.
  • Running EMC grabs and HEAT reports for preparing document for migration.
  • Experience in patching on Solaris quarterly and also involved updating recommended and security patches on the servers.
  • Implemented virtualization for SUSE RHEL servers using VMWare ESX 4.1.
  • Data migration at Host level using Red Hat LVM, Veritas Volume Manager and Solaris LVM.
  • As a Unix System Engineer Worked with VERITAS, RHEL LVM and Solaris ZFS to create volumes on SAN devices.
  • Trouble-shooting the issues on RHEL servers and worked on user request LAN ID requests and performance issues.
  • Worked on HP Dell x86 HW and also IBM Blade Centers.
  • Installed RPM's on SUSE RHEL server using repository and Redhat satellite servers.
  • Supported around 5000 server which carries Linux Redhat, CentOS Suse Solaris.
  • Troubleshooting issues on Application Servers on Linux, Aix and Solaris Servers.
  • Worked on Apropos calls 24/7 on call support for Unix Servers
  • Worked on Disaster Recovery process which happens every three months.
  • Worked on Server reboots issues All Direct TV servers reboots every week
  • Worked on Incidents and Change Tickets in Service Now.
  • Created LAN ID Request for users to access application Servers.
  • Installation, Maintenance, Administration and troubleshooting of Linux, Aix, Solaris servers on various hardware platforms that include x86 SPARC.
  • Managed Linux servers running Applications and also installing software and Patch depots on Linux servers.
  • Migrated applications from AIX and Solaris to Linux.
  • Experience in Virtualization using VMWARE ESX to replace OLD HW.
  • Performed automated installations of Operating System using Kickstart for Linux Servers.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers for a failed Hard Disks.
  • Installation, Maintenance, Administration and troubleshooting of Redhat, CentOS, SUSE Linux,Solaris 8,9,10 and IBM AIX 5.x 6.x servers on various hardware platforms that include M-Series Servers 5000,9000,etc ,Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 etc.
  • Migrated applications like SAP, Iplanet Oracle DB from HPUX and Solaris to Linux.
  • Experience in Virtualization using VMWARE ESX and Solaris Zones to replace OLD HW.
  • Performed automated installations of Operating System using Kickstart for Linux and Jumpstart for Solaris.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers
  • Implemented a High AvailabilityCluster using 2 V480s, a T3 and Veritas Cluster Server 4.1.
  • Configured firewall based on RedHat Linux and FreeBSD 4.x that has three network interfaces.
  • As a Unix System Engineer Involved in configuring and troubleshooting NFS devices over NetApp and NFS servers to NFS Clients like Redhat and Solaris.
  • Experience working with Solaris Live upgrade for patching and OS upgrades.
  • Experience in Host based Migrations using OpenMigrator and Veritas Volume Manager.
  • Developed, customized and build packages on Solaris and rpms on Linux for deployment on various servers through Software Development Life Cycle.
  • Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment. Worked with Apache and developed several UNIX scripts to automate web tasks
  • Managed existing documentation for systems and created new procedures to support new products. Created documentation for disaster recovery project.
  • Strong scripting knowledge to perform different administration tasks.
  • Experience in Shell scripting ksh, bash to automate system administration jobs
  • Mentoring junior team members to support production web environment.

Environment:Solaris 8,9, HPUX 11.X, RedHat Linux 3.x,4.x,5.x SUSE 9,10, Fedora Linux 1/2/3/4, CentOS, Veritas Volume Manager 3.x, 4.0, Veritas Cluster Server 4.1, M-Series servers, Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800,Websphere, Tomcat Apache, Cisco Routers.

Confidential

Linux/Unix Engineer

Responsibilities:

  • Installing, configuring and updating SUSE Redhat Linux systems.
  • Designing System Requirements, Designing Storage requirements, Configuration Management/Change control/Release management.
  • Experience working on virtualization using VMWAARE ESX 4.x, 5.x.
  • Installing Veritas Volume Managerand configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
  • I worked on Server vulnerabilities along with PCI compliance for Windows, Linux, Solaris and AIX servers
  • Creating, Resizing and managing online JFS File system for users upon user request using VERITAS Volume manager and LVM.
  • Worked on the Apache Satellite servers.
  • Patch and Package administration to keep the servers updated with the patches and that implementing packages developed for deployment.
  • Installed and Configured SSH SSL for secured access on HP and Solaris Systems.
  • Installing and Configuring HP-OMNIBACK for Backup of more than 30 Servers.
  • Installing, configuring various software applications and packages like Apache, Web Logic Oracle etc.
  • Experience working with NIS and DNS naming services and administering the public DNS servers.
  • I worked on DRAC's servers to upgrading firmware.
  • Monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
  • Troubleshooting and analysis of hardware and software failures for various Solaris servers core dump and log file analysis
  • Tuning the Kernel parameters for the better performance of applications like Oracle, WebLogic etc.
  • Modifying/ Writing scripts using sh, ksh and bash for day-to-day administration.
  • Creating, Deleting and managing user database and their respective directories.
  • Performing backups of Production, DIT and Development servers and applying required patches.
  • Worked on Storage migration tools.
  • Setting up cron jobs for the user to deploy scripts on production servers.
  • Involving in implementing RAID technologies and SAN solutions like multipathing and also involved in the configuration of a SAN with McData Switches and Hitachi Data Systems HDS SAN Arrays.
  • Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.
  • Worked on User administration setup, maintaining account, Monitor system performance.
  • Environment, Command line, Current working directory, root directory, executed command.
  • Extensive user and group management through admin tool.

Environment: Redhat Linux 4/5/6, Solaris 7, 8, 9,10,11, HP-UX 11.x, Windows 2003/2008, NFS, LVM, Veritas Volume Manager 5.0, HP-Omni back, DHCP, DNS, SMTP, SSH2, Apache 2.x, System 5 Packaging, Perl, Oracle.

Confidential

UNIX/Linux Administrator

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of Sun Solaris 8,9 and Redhat 9, AS 3.0 servers on various hardware platforms that include Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 etc.
  • Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers
  • Implemented a High AvailabilityCluster using 2 V480s, a T3 and Veritas Cluster Server 4.1.
  • Configured firewall based on RedHat Linux and FreeBSD 4.x that has three network interfaces.
  • Configuration and administration of Linux application servers, X-terminals and Diskless Workstations. Providing day-to-day user administration like adding/deleting users and managing users' queries. Shell programming for routine administration tasks. Analyzing monitoring system performance through various system tools such as netstat, iostat.
  • As a Unix System Engineer Developed, customized and build packages on Solaris and rpms on Linux for deployment on various servers through Software Development Life Cycle.
  • Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment. Worked with Apache and developed several UNIX scripts to automate web tasks
  • Managed existing documentation for systems and created new procedures to support new products. Created documentation for disaster recovery project.

Environment:Solaris 8,9, RedHat Linux 7.x/9,AS 3.0, Fedora Linux 1/2/3/4, CentOS, Veritas Volume Manager 3.x, 4.0, Veritas Cluster Server 4.1,Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 etc., Cisco Routers.

Confidential

UNIX Administrator

Responsibilities:

  • Installation, Maintenance, Administration and troubleshooting of Sun Solaris 8,9 and Redhat 9, AS 3.0 servers on various hardware platforms that include Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 etc.
  • Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers
  • Implemented a High Availability Cluster using 2 V480s, a T3 and Veritas Cluster Server 4.0.
  • Developed, customized and build packages on Solaris and RPMs on Linux for deployment on various servers through Software Development Life Cycle.
  • Designed bash, kshand Perl scripts to automate application and system management activities. These scripts provided the following functionality: application startup and shutdown, monitored systems and applications health, and web site management
  • Installation, Management, Configuration of LAN/WAN systems utilizing Cisco switches and routers.
  • Configured various services, devices as well as applications of UNIX servers and worked with application team to customize the environment. Worked with Apache and developed several UNIX scripts to automate web tasks
  • Configured firewall based on Redhat Linux and FreeBSD 4.x that has three network interfaces.
  • Managed existing documentation for systems and created new procedures to support new products. Created documentation for disaster recovery project.

Environment: Solaris 8,9, Redhat Linux 9, AS 3.0, Veritas Volume Manager 3.x, 4.0, Veritas Cluster Server 4.1, Cisco Routers, Sun 4800, V480, 280R, 4500, 3500, Dell 6400, 2400, 1800 Redhat 8, 9

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