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System Administrator Resume

San Francisco, Ca

Professional Summary and Objective:

Information Technology professional around 7+ years of overall and relevant experience in administration, configuration, management of UNIX (Solaris and Linux) Systems. To achieve greater heights in a challenging environment that provides the constant update of knowledge and an opportunity to contribute in the success of the organization. Possess core competencies in Sun Solaris 8/9/10, Redhat Linux 5/6, SUSE Linux 10/11, VERITAS Volume Manager, VERITAS Cluster server and Filesystems.

Skills Profile:

  • 8 Years of experience in installation and implementation of SUN Solaris 8/9/10, Redhat Linux 5/6, HP-UX, Windows NT/XP on Sun, HP Servers for Mission Critical and Enterprise applications.
  • Experienced in system administration, System planning, co-ordination and group level and user level management.
  • Experience in Xen virtualization and DRBD replication.
  • Configuring and maintain servers in cluster by using Pacemaker.
  • Installation, Administration and Configuration of VERITAS storage foundation suite.
  • Initializing of SAN storage and control with VxVM by creating and reclaiming of disk groups.
  • Creation and removal of volumes, plexes and sbdisks in VERITAS Volume Manager.
  • Creation, Management and Administration of VxVM filesystem.
  • Administration and Support for VERITAS Cluster Services and VERITAS Cluster Filesystem.
  • Configuration, implementation and administration of NFS, NIS, DNS, and Sun Cluster and LDAP on Solaris and Linux environment.
  • Understanding and troubleshooting skills with networking communications and protocols such as TCP/IP, NFS, DNS, SMTP.
  • Expertise in creating and managing Logical Volume Manager in Redhat Linux.
  • Expertise in Installation, Configuration of Package and Patch Management.
  • Experienced with installation, configuration of RAID volume management using VERITAS Volume Manager.
  • Experience in Disaster Recovery and Planning.
  • Excellent Problem determination skills and system performance using NMON, top, vmstat, iostat.
  • Excellent scripting abilities for automation using Korn, Bash, Perl Scripting.
  • Experience on backup and recovery software like VERITAS Net backup 5.0 and 6.0 on Linux environment.
  • Installation, administration, implementation, testing and maintenance of complex networks consisting of Linux, Sun Solaris 8/9/10, IBM AIX, Windows NT, and Peripherals.
  • Installation, Configuration and Maintenance of Samba, Apache Tomcat, Web Sphere and JBOSS servers in Sun Solaris and Linux environment.
  • Hardware configuration, installation and management on Sun, HP servers and Workstations.
  • Handling and generating tickets via the Remedy ticketing tool.
  • Configured ILOs and Console connections for HP and SUN servers.
  • Knowledge of Routers, Switches, Hubs, Firewalls, LAN, WAN Intranet, Internet.
  • Maintained high availability of data using VERITAS cluster Server and Sun Cluster.
  • Backup and Restore Management like VERITAS backup, Tape library and Disk library and EMC.
  • Excellent verbal communication skills and strong documentation skills.

Technical Skills:

Operating System: SUSE Linux 10/11, Solaris 8/9/10, HP-UX (10.20, 11.00, 11.11, 11.23), IBM AIX (4.3, 5.1L, 5.3L), Red Hat Linux, Windows NT 4.0/2000/2003/ XP/vista

Hardware: HP Gen 8 Blade and Rack mount Servers, Sun Fire, Sun Enterprise 6500/5000/450/420 R, HP 9000 K,L,N class server, IBM RS/6000, pSeries, Xseries, HP/IBM/Blade Servers.

Storage: NetBackup, SAN EMC Symmetrix 800/ DMX1000, 2000 & 3000, EMC Clarion 500, 600, 700, NetApp NAS 2000/ 3000 series

Web /Application Server: Apache Tomcat, WebSphere, WebLogic.

Cluster: VERITAS Cluster Server, VERITAS Filesystem, Service Guard, Sun Cluster

Languages: Korn, BASH, Perl Shell Scripting

Professional Experience:

Confidential, Plano, TX

UNIX System Administrator

Responsibilities: -

  • Provide system support for 6000+ servers of SUSE 10/11 and Redhat Linux 5/6 including routine maintenance, patching, and system backups and restores, and software and hardware upgrades.
  • Working Linux migrations from physical to virtual.
  • Experience with Xen virtualization.
  • Working on DRBD Replication tools.
  • Configuration, implementation and administration of Clustered servers on Linux environment by using Pacemaker.
  • Configuring and maintaining NAS and SAN storage.
  • Support production systems 24 x 7 on a rotational basis.
  • Working on network issues
  • Deploying and maintaining the Informix database.
  • Handling and generating tickets via the BMC Remedy ticketing tool and Remedy 7.

Confidential , San Francisco, CA

UNIX System Administrator

Responsibilities: -

  • Provide system support for 2000+ servers of SUN Solaris 8/9/10 and Redhat Linux 5/6 including routine maintenance, patching, and system backups and restores, and software and hardware upgrades.
  • Work on building new SUN Solaris & Redhat Linux servers, support lease replacements and implementing system patches.
  • Experience with VMware Virtualization using ESX hypervisor of Vsphere 5.1.
  • Experience in installation and implementation of Sun Solaris, AIX and Redhat Operating Systems.
  • Configuration, implementation and administration of Clustered servers on Linux environment.
  • Experience in system administration, System planning, co-ordination and group level and user level management.
  • Expertise in creating and managing Logical Volumes in SUN Solaris and Linux.
  • Perform automated installations of Operating systems SUSE Linux using autoyast.
  • Experience on backup and recovery software like Net backup on Linux environment.
  • Systems and network Planning and Administration.
  • Expertise in setting up Nagios Monitoring software.
  • Support production systems 24 x 7 on a rotational basis.
  • Understanding of Microsoft System Center: Creating and Implemented Changes on servers and documented the change in the Microsoft System Center for future reference .
  • Resolve Security Access Requests via Peregrine Service center to provide the requested User access related requests.
  • Expertise in Installation, Configuration of Package and Patch Management.
  • Handling and generating tickets via the BMC Remedy ticketing tool.
  • Experience with HP Gen 8 blade servers and rack mounted servers.
  • Coordinate Hardware configuration, installation and management as well as. Configuration of ILOs and Console connections for HP Gen 8 Blade and Rack mounted servers.
  • Experience with setting up Linux servers for Oracle Real Application Clusters and configuring SAN based mount points.
  • Excellent Project Management experience.
  • Expertise in Performance Monitoring and Performance Tuning using Top, prstat, sar, vmstat, ps, iostat etc.
  • Create new file system, managing & checking data consistency of the file system.
  • Create new file systems using Raw Device Mapped luns, Virtual Disks and SAN storage as per required.
  • Successfully migrating virtual machines from legacy Virtual environment Vmware Vsphere 4.1 to new Vmware Vsphere 5.1.
  • Successfully upgrade SUSE Linux 10 to SUSE Linux 11 on an Oracle production standby server without losing any of the database information.
  • Document the procedure of Obsoleting servers resulting in considerable reduction in time and mistakes for this process as well streamlining the existing process.
  • Communicate and Coordinate with customers internal/external for resolving issues for reducing downtime.
  • Experience in Disaster Recovery and Planning.
  • Problem determination, Security, Shell Scripting.
  • Proven experience in end-to-end problem determination/troubleshooting system issues.
  • Thorough understanding of networks and storage systems.
  • Perform server boot and shutdown as per requirements and process
  • Installs, Upgrades, Patches, Configuration, performance tuning on Sun Solaris for both Sparc & x86 environments
  • Work with DBA, Network, and Backup and Application teams to resolve day-to-day issues as per SLA.
  • Work on decommissioning of Servers.
  • Used ftp, scp for transferring files across the systems.
  • Monitoring System Performance of Virtual memory, System events, Swapping, Disk utilization, CPU utilization.
  • Disk configuring & Managing File Systems
  • Troubleshoot on NFS services like Starting/Stopping NFS client, mounting nfs file systems, configuring to auto-mounts, Storage increasing on NAS file systems.
  • Administration of Users and Groups. Troubleshooting when server doesn’t have login access
  • issues for the users
  • Scheduling of automatic repetitive jobs with crontab
  • Managing System Services using SMF
  • Configuring and maintaining of Zones

Confidential, Irving TX

UNIX/Linux System Administrator

Responsibilities: -

  • Responsible for day-to-day System Administration for SUN SOLARIS servers.
  • Build the E450 and 6000 Servers with Solaris operating system.
  • Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery
  • Systems performance monitoring.
  • Experience with VMware Virtualization.
  • Solaris Operating Systems upgrade, package installations, updates, patches and software fixes.
  • Configured the Send mail client side for Sun Solaris servers.
  • Responsible for troubleshooting end user and application problems.
  • Veritas File system and Veritas Volume Manager 2.5 are used to configure the RAID 1 and RAID 5 Storage Systems.
  • Creating User accounts, Mail account, groups, printer etc
  • Installing operating systems, patches, hardware, vendor software packages, system customization and documentation of all departmental UNIX, PC-based workstations and Terminal.
  • Monitoring system resources, logs, disk usage, scheduling backups and restore.
  • Set up Quotas for the user accounts & limiting the disk space usage.
  • Creation/Configuration of Additional swap/ tmp dynamically as and when required.
  • NFS Management - Take care of user accounts/groups, setting up of NFS Environment.
  • Solving the problems as & when created when NFS data being accessed.
  • Configured auto mounts/maps for the user accounts.
    Administration/Configuration of Print Servers/Clients in the Network
  • Worked closely with database administration staff to ensure optimal performance of databases, and maintain development applications and databases.
  • Assembling the systems and installing operating system and application software.
  • Designing computer displays to accomplish goals using flowcharts and diagrams.
Confidential,CT., 2007UNIX Administrator,

Responsibilities: -

  • Installing Operating Systems and Application Software.
  • Responsibilities:
  • Responsible for Nestle’s UNIX servers and applications running on UNIX, Websphere and Tivoli platforms. The environment consisted of hundreds of Solaris, AIX and Linux based servers.
  • Oversaw and verified the Hardware Installation and Configuration of New Servers.
  • Handled Kernel Turning to provide operating system performance.
  • Completed tests of High Availability of all operating system/software to ensure the continuity of service.
  • Assisted the development team and reviewed the required maintenance tasks.
  • Reconfigured the File system/Network Interfaces and resolved the Security issues.
  • Installed, Configured and Maintained the optimum Backup Solution.
  • Optimally configured Network Interfaces.
  • Implemented security in systems and network for all Sun Enterprise Servers & Desktop Servers.
  • Created & maintained user Accounts using Shell Scripts.
  • Used SMIT to administer AIX 5.2 based servers.
  • Installed Apache webserver on Linux Servers.
  • Handled Day-to-Day operation of all servers running Production jobs, Backups, Restores and Report generations.
  • Handled housekeeping tasks such as tape management.
  • Handled Package and Patch Administration, software Installations.
  • Handled email Administration & Troubleshooting
  • Involved with Data Transmission for remove servers using scripts, monitoring the Data Link and File System Administration
  • Configured DNS servers.
  • Handled troubleshooting the configuration file, configured the Boot file for the Domain Name Server to boot, configured the Zone database, updated the Zone database.
  • Configured security packages such as tcpd, filter, etc.
  • Provided technical expertise necessary to Identify and implement short-term resolution of production issues.
  • Managed NFS, NIS, DNS and DHCP servers.

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