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Linux Administrator Resume

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Philadelphia, PA


  • 7+ years of extensive experience in Installation, Configuration, Upgrading, Support, and Maintenance of various UNIX flavor like Sun Solaris 8,9,10 &11 and Windows Servers.
  • Fluency in Linux like RHEL 4/5.x/6.x Cent OS and Ubuntu.
  • Installed, upgraded and configured Sun Solaris on Sun servers using Jumpstart. Interactive installation in Red Hat Linux using Kickstart.
  • Excellent experience in installing and configuring Package and Patch Management.
  • Experienced in configuration of DNS, NIS, NFS, LDAP, SAMBA, Sendmail, FTP, remote access on Linux and Solaris.
  • Good experience in setting up of RAID0, RAID1 (mirroring) and RAID5 for data redundancy using. Veritas Volume Manager and Veritas File System on Sun Solaris.
  • Expertise in Installing, configuring and maintaining Veritas Volume Manager, Veritas Net backup, Veritas Cluster server and Sun - Cluster server.
  • Knowledgeable in Virtual servers including VMware ESX 3.5, 4.0, 5.x /ESXi cluster VCenter Servers, LDOMs and Zones.
  • Administered servers in heterogeneous environment, which includes Windows Server 2003/2008 & Linux.
  • Excellent skills in Disaster Recovery, working in bring up Solaris, Red Hat, Aix & HP - UX servers during DR/DR drills for numerous clients.
  • Installed and configured Oracle RAC 10g &11g on Red Hat Linux cluster node.
  • Proficiency in installing packages using RPM build.
  • Comprehensive experience on ZONES installation, creating individual Zones while configuring and maintaining global aswell as local Zones.
  • Proficient in Installation, configuration, maintenance of open LDAP server and application integrated with Apache Web server and Postfix mail server for user authentication.
  • Configured Jumpstart for automatic installation of VERITAS foundation suite and encapsulation of boot disk.
  • Installed and setup the Policies in Veritas Netbackup and setup the Netbackup Master, Media and clients.
  • Implemented day-to-day tasks in Red Hat Linux include upgrading RPMS, kernel, HBA driver; configure SAN Disks, Multipathing and LVM file system.
  • Experienced in supporting database systems including Oracle, MySQL, PostgreSQL on Linux as well as Solaris Environment.
  • Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays HITACHI, EMC).
  • Good experience in installing configuring and maintenance of Veritas Cluster Manager.
  • Troubleshooting and monitoring performance issues in CLARiiON storage systems using EMC Navisphere Analyzer.
  • Expertise in Veritas and Tivoli net backup tools.
  • Experience in EMC CLARiiON SAN, NAS, and DAS installed & configured, implemented clustering, high availability (HA), and Fail over.
  • Upgraded the operating system on the domains to Solaris 8 releases 2/02 to enable dynamic reconfiguration.
  • Provided hardware support for high-end servers built by IBM, SUN, Dell, Super micro, and Hewlett-Packard (HP) servers.
  • Performed Scripting for automation, expertise in utility and monitoring using Shell & Perl scripts.
  • Provisioned Storage for Solaris host environments from Clariion series CX 380/700/600 storage systems with Fiber channel drives for production.
  • Experienced in remote network installations like KickStart & Jumpstart.
  • Handled routine maintenance with latest Security updates and software update.
  • Installed and configured Ignite in HP-UX machines.
  • Great communication skills, wonderful team leader and awesome team player.


Operating Systems-: Linux - Red Hat (RHEL 3,4,5&6), Fedora, SUSE, Debian, Ubuntu, CentOS Unix - IBM-AIX 6.1/5.3, Solaris 10/9/8, Windows - NT/ 2000/2003/2007/ XP Pro/Vista/7/8 & Windows Server 2003 & 2008

Languages-: Perl, Shell scripting Ksh & Bourne Shell

Databases-: Oracle 8i/9i/10g/11g, MySQL (phpMyAdmin), PostgreSQL (phpPgAdmin), DB2

Mail Servers-: Postfix, Dovecot IMAP, SASL, PostgreSQL (Virtual mail box), Ruby on Rails

Web Server-: Apache2/Tomcat, JBoss, IBM-Web sphere, Weblogic

Hardware-: IBM RS/6000, pSeries, HP Server 9000/800 Series, Workstations 700 series, Dell Power Edge 1300/1500/6650/2650/2950 Servers, Rack servers, Infotrend Eonstor DAS, EMC CLARiiON SAN, NAS Storage Box, Supermicro 6015B-3R & 8045C-3R, F5 system, Cisco MDS 9000 SAN switch, HP Blade

Virtual Server-: VMware ESX 3.5.0 Server, LDOMS, zones.

Networking Services-: NIS, NFS, AutoFS, DNS(BIND) and DHCP

Other Tools-: Nagios, IPMI, CUPS, Samba, Firewall (Squid, IPTables), FTP, KickStart, rsync, SAS ODBC, VERITAS Netbackup 5.1/6.5.3, SSH, Cronjob, openLDAP, apt-get, yast, yum, Bugzilla, RAID, SVN, CVS


Confidential, Philadelphia, PA

Linux Administrator


  • Installation, configuration and Operating System upgrade on Solaris 8,9,10, on Sun servers as the Solaris Lead.
  • Performed installation, configuration and maintenance of Red hat Linux 4.x/ 5.x/6.x in both virtual and physical environments.
  • Installation and configuration of IBM Aix 5L/V6 servers via mksysb & boot from SAN in a Disaster Recovery environment. Involved in post restoration activities such as network configuration and file system creation.
  • Assist in bring up HP UX servers through ignite in a Disaster Recovery environment. Plus file system creation & network configuration post restoration.
  • Specialization in DR activities periodically, using SRDF R1/R2 devices to facilitate SAN split / re-establish of SRDF devices.
  • Also excelled on Linux kernel, memory upgrades, and swap area. Redhat Linux Kickstart Installation. Configuring DNS, DHCP, NIS, NFS in Redhat Linux other Network Services.
  • Performed daily backups, restoration of data as per requests from developers using VERITAS Netback up.
  • Providing on call support when required to both onsite plus off shore team comprising of 4 Solaris & 10 Red-Hat Admins (offshore).
  • Proficient in Bonita BPM Migration tool 1.18.0, training provided during the DR drill for Exel/DHL.
  • VERITAS File system and Veritas Volume Manager 5.x are used to configure the RAID 1 and RAID 5 Storage Systems
  • Used Zone Configuration in Solaris10 boxes. Creating number of zones under the Global zone and setting up network plus file system configuration for those zones.
  • Experience in servers consolidation and virtualization using VMware virtual infrastructure, VMware ESX 5.x.
  • Wrote Shell Scripts as cron jobs and deployment scripts for various reasons.
  • Mounted Disks allocated from the SAN (EMC) for Linux and Solaris servers. Installed new and removed bad HBA cards from the server. Moved the Volumes from CX600 to CX700 to increase storage capacity.
  • Provided application support for Weblogic application srvers as required.
  • Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig', ‘lsof’ and 'snoop' etc
  • Installed all the required Software, patches, documentation and licensing trouble shooting.
  • Troubleshoot network & DNS issues and handled VERITAS Netbackup server & client connectivity problems.
  • Monitored overall system performance, performed user management, system updates and disk & storage management.
  • User administration with LDAP, AD with VAS.
  • Production support of Apache and JBoss including installation, configuration, management and troubleshooting
  • Used server automation tool and configuration management with puppet 3.x
  • Involved in various server migration efforts / projects: P2P, V2V & P2V.
  • Setup of full networking services and protocols on UNIX including NIS/NFS, DNS, SSH, DHCP, NIDS, TCP/IP, ARP, applications, kickstart and print servers to insure optimal networking, application, and printing functionality.
  • Installed and configured Sudo for users to access the root privileges.
  • Wrote Technical documentation for various DR projects with Recovery Solution Architects & System Delivery Managers to finalize the Recovery Procedure documents.

Environment: Solaris 8,9,10, Red hat Linux 4.x,5.x,6.x, AIX 6.1, 5.3, HP-UX 11i v1.6,v2 & v3, VMware ESX Server 5.0, JBOSS, Remedy, EMC Power Path, windows 2003/2007/XP/VISTA/7, Solstice Disk Suite, Veritas Cluster Server, Enterprise Security Manager, Opsware, Weblogic 8.1, Oracle 10g/11g.

Confidential, Houston, TX

Linux/Unix Administrator


  • Administration and support of Unix Servers running on Red Hat Enterprise Linux 4.x/5.x and IBM AIX 5L 5.x operating systems. Installed Sun Solaris servers at other facility over the network using Jumpstart installation.
  • Administered and maintained IBM Power System p5 510/550 servers running AIX 5L 5.x operating system and maintained Sun SPARC servers running Solaris 9/10 OS.
  • System support to application team, maintain net backup for 100 plus Sun Solaris & Windows 2008 servers in development, UAT and production environment for high availability and performance.
  • Built the IBM servers from the scratch level, from loading OS, creating file systems, and configuring network adapters.
  • Working knowledge in various Application servers including Red Hat JBoss and IBM WebSphere.
  • Provided administration support for Sun Solaris servers. Implemented WebLogic in Solaris servers.
  • Duties include user administration, scheduling jobs using crontabs, file system maintenance, scripting and automation. Performed User account management, data backups, and user’s logon support.
  • Configured volume groups and logical volumes using Logical Volume Manager (LVM) commands.
  • Configure, support and perform routine maintenance of hardware and software for Linux andSolarisservers.
  • Involved in Hardware and software evaluation, recommendation and vendor management.
  • Resolved config issues and problems related to OS, NFS mounts, LDAP user ids DNSand issues.
  • Experience in creation and maintenance of ZFS file systems / set quotas.
  • Regularly applying patches for Redhat Linux,Sunand HP systems.
  • Develop Unix Shell scripts for regular and periodic jobs and also for sysadmin jobs.
  • Extensively worked with Business, Application, Database, Network and SAN Team for project requirement.
  • Configuring ALOM / ILOM / XSCF onSunand ILO's HP HW.
  • Project co-ordination and providing technical advise on system to management
  • Plan, document, review and maintain system administration guidelines and policies
  • Organizing DR (Disaster Recovery) server tests to make sure the infrastructure is correct and the DR servers are working as expected as in production servers.
  • Actively involved in solving EMC Symmetix/CLARiiON, and Brocade switches issue.
  • Escalated high level technical support issues to storage vendor (EMC/SUN) and management. Generating explorers, guds, dump reports for RCA.
  • Virtualized Linux servers and deployed automated tasks using BMC BladeLogic Server Automation Suite.
  • Configured and performed troubleshooting Samba, NFS and NIS over Red Hat Linux and AIX Servers.
  • Performed administrative tasks such as System startup/shutdown, Backup strategy, Printing, Documentation, User Management, Network management, dumb terminals and devices.

Environment: IBM AIX 5L 5.x, Red Hat Enterprise Linux 4.x / 5.x,SUSE Linux 9/10,Sun Solaris9 / 10,Dell,Poweredge 50 / 4600, SystempSeries 0 / 5 / 5 / 0, Oracle 10g, IBM WebSphere MQ, Red Hat JBoss, BMC Patrol, Veritas NetBackup, IBM HMC, IBM HACMP, NIM, IBM Tivoli Storage Manager, IBM Rational ClearCase/ClearQuest, Veritas Volume Manager (Solaris), Logical Volume Manager (Red Hat Linux), NIS, NFS, EMC Symmetrix DMX-3/CLARiiON CX4, Brocade

Confidential, Seattle, WA

UNIX system administrator


  • Worked in Datacenter and managed 200+ server nodes as a primary ownership.
  • Installed SUN OS versions 8, 9, 10 on Ultra 5, 280R, E450, E6800, E12K, v240, 440 production servers
  • Compiled, Built and Installed PostgreSQL database 8.3.1 and written shell script for startup in SUSE Enterprise Linux 10sp1 Supermicro dedicated server 6015B-3R for Fortress platform development Lab, app and QA team.
  • Setting up of Jumpstart server for OS images Patches and updating servers.
  • Implemented new 2.5-Terabyte (CX300 Device) SAN-based file storage with minimal site downtime. Scheduling, running, monitoring and troubleshooting backup for Servers and SAN using the tools Veritas Backup Exec, VERITAS Net Backup.
  • Installed and Configured system network monitoring tool used Nagios and trouble-shooted virtual machine issues.
  • Wrote backup and maintenance scripts for maintenance of MySQL servers in the environment.
  • Maintained VMware ESX server 4.x connected with two EMC CLARiiON SAN box and managed of two Cisco MDS 9000 switch using Fabric & Device management tool.
  • User administrations with LDAP, NIS, NIS+.
  • Installed, Configured tested and documented SAN Copy procedure to migrate data from DMX to Clariion and Clariion to DMX for windows and Solaris operating system.
  • Installed and configured veritas cluster server 4.x.
  • Oracle installation & system level support to clients.
  • Written shell scripts to automate the administrative tasks using cron, Batch and at in Linux.
  • Logging events and forcing crash dumps, securing servers and troubleshooting issues.
  • SAS controller firmware and new BIOS updated in Supermicro server for VMware ESX server installation.
  • Configured IP chains and IP tables to provide the packet filtering and firewall security to Linux Boxes. Configured TCP Wrappers in Linux and Solaris boxes that allow and block the hosts in to the server.

Environment: Red Hat Enterprises Linux, SuSE Enterprise Linux, Debian GNU Sarge & etch, CentOS, Apache, Windows 2003/XP, JBoss, Tomcat, SVN subsystems, PostgreSQL, MySQL, Media Wiki, Bugzilla, Supermicro & Dell Servers, AIX, F5, VMware ESX Server 3.0.1 & 3.5.0.

Confidential, Fort Belvoir, VA

Solaris/Linux Administrator


  • Installed Red Hat Enterprise Linux over the network using Kickstart installation and installed Sun Solaris using Jumpstart installation on Sun SPARC Servers.
  • Created users, enabled user permissions and maintained User & Group quotas on Solaris and Linux servers.
  • Performed System Backup using tar, cpio for local systems and Veritas NetBackup for Enterprise wide backup and recovery and to centrally manage storage resources through a single console.
  • Built Servers, User mappings to access DB2 and Oracle databases.
  • Setup NIM server to perform network installations on AIX clients.
  • Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
  • Configured and administered NFS, NIS, Auto mounts and Network Printers.
  • Involved in setting up Network and Systems from scratch for a new facility.
  • Process administration involving monitoring processes using PS utility, signaling a running process using kill command, monitoring process and system load using topas, vmstat, and uptime utilities, monitoring logs, scheduling processes using crontab utility.
  • Configured Samba on Linux servers to enable access to file systems and printers for Windows users.
  • Developed shell scripts for automated installations and to extract logs.
  • Installation of patches and packages on Solaris and Linux Servers.
  • Configured IBM Total Storage SSA RAID arrays and SCSI storage drawers including D20/D24.
  • Performed User Account management, data backups, and login support for users.
  • Monitored trouble ticket queue to attend user and system calls.
  • Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.

Environment: IBM AIX 4L 4.x, Red Hat Enterprise Linux 3.x/4.x, Sun Solaris 8/9, SUSE Linux 8/9 Dell Poweredge 1650, IBM eServer 820/875/520/550 , HP DL380, Oracle 8i, IBM WebSphere, Red Hat JBoss, VMWare ESX, Veritas NetBackup, Nagios, IBM HMC, IBM HACMP, IBM Tivoli Storage Manager, Veritas Volume Manager (Solaris), Logical Volume Manager (Red Hat Linux), SNMP, RMON, VIOS, Samba

Confidential, Bethesda, MD

Unix/Linux Administrator


  • Setup VCS HA cluster and monitoring
  • Install new OS Oracle Solaris/RedHat Linux from ground up.
  • Install application specific software, tools and configuration as per requirements
  • Routine preventive maintenance tasks such as Monitoring, OS patching, backup/recovery
  • Consult or investigate with vendor support at all levels of troubleshooting and problem resolution
  • Build Dell/HP Windows server 2003 to meet business process requirement, upgrade manage system; security and third party patches and apply to DEV, QA and production environment.
  • Rack/Un-rack server hardware, cabling including other DataCenter activities as required
  • Provide Leve1/2 operational Unix support (using BMC Remedy ticketing system)
  • New server installation and configuration for CentOS
  • Develop standards for OS file system, virtualization, patching, packaging
  • Compile source code and create RPM packages on Linux platform
  • Setup RedHat HA cluster and monitoring

Environment: Cisco, SW/HW tools, cad, networking, UNIX/LINUX/SOLARIS system, SUSE/REDHAT/RHEL/p, windows administration, LSF, hardware design, data center management, global perspective, operations, information security, EDA, JIRA, Scripting (PERL/BASH), VERITAS Cluster Services, VERITAS Netbbackup, VERITAS Volume manager, Tivoli Storage Manager

Confidential, Cincinnati, OH

Linux/Unix Administrator


  • Supported several applications and database servers running several Solaris versions.
  • Set up the Domain Name System by configuring the DNS primary, secondary and DNS Clients and configured the database files.
  • Monitored the Network and System Performance through vmstat, iostat, grapher tool, MRTG and SEtoolKit 3.0.
  • Recovered data from server after a ROOT file system crash.
  • Created and added Swap Space at runtime.
  • Backed up and restored data from tape in ufsdump, tar, cpio & dd format.
  • Configured the Send Mail configuration file, created e-mail ids, created alias database.
  • Working with Project manager and lead DBAs and plan migrations
  • Job responsibilities include maintenance of LAN/WAN Connectivity and monitoring, inter-networking DMZ configuring and maintenance of Routers, gateways and other networking Components.
  • 24x7 support by participating in on-call duties for production support.
  • Built new servers by using jumpstart and kickstart
  • Setup RedHat HA cluster and monitoring

Environment: RedHat Linux 3/4, Solaris 8, VI3/vSphere, HP-UX, HP-Blade, SPARC, WebLogic, NAS.

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