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Linux/unix System Administrator Resume

NC

SUMMARY:

  • 6+ years of experience as a Linux administrator on Redhat EL 5.x 6.x, 7.x Debian, CentOS 4.x, 5.x, Suse 9, 10, 11 & 12, Oracle Enterprise Linux 6 & 7 Solaris 8, 10 and VMware vSphere ESX/ESXi 5.x, 6.x environment.
  • Installation, configuration, system maintenance and data - migration on Solaris/Linux servers.
  • Virtualisation of an operating system, servers and network resources. (Ldom, zone)
  • Disk space and File system management using VERITAS Volume Manager, Solaris Volume Manager, and Logical Volume Manager LVM and RAID Volume Management.
  • Performed automated installation of Operating systems using kickstart for Linux and Jumpstart for Solaris.
  • Experience in administration and maintenance of application services like DNS, DHCP, FTP, LDAP, and NFS.
  • Experienced in installation of Operating Systems, Packages and Patches, adding Peripheral, maintaining user accounts, System Security, backup/recovery, performance tuning, troubleshooting at various levels.
  • Strong analytical, diagnostics, troubleshooting skills to consistently deliver productive solutions, with debugging an operating system issue in Linux system.
  • Provided technical expertise for IT network design, implementation, optimization and upgrade.
  • Experience configuring Firewall and security using SSL, IP tables, TCP Wrappers.
  • Filesystem creation, system security and troubleshooting on server related issues.
  • Provide support for server side applications (Web sphere and Oracle server based applications, web server based applications).
  • Participate in project development as required providing project plans, documentation and training material as necessary.
  • Ability to work in high pace environment with demonstrated strength in customer satisfaction.

TECHNICAL SKILLS:

Hardware:: Sun Fire servers, T series (T3, T4, T5) M-series (M3K, M5K, M-10), HP servers.

Databases:: Oracle, MySQL, PHP, Linux OS, Microsoft AD

Protocols:: DNS, SSH, SMTP, NFS, TCP/IP, HTTP, FTP, UDP, Routing Protocols.

File System:: UFS, zfs, ext, Vxfs, xfs

Languages: Unix shell Scripting

Web Application Server: Apache server, Apache Tomcat, Webspere, Weblogic

Virtualisation Tools: VM ware, Virtual Box

Monitoring Tools: Nagios, HP open view

Open source: Puppet

PROFESSIONAL EXPERIENCE:

Confidential, NC

Linux/Unix System Administrator

  • Installation, configuration and upgrade of Linux, solaris operating systems.
  • Responsible for upgrades to Red hat Linux with software packages, patches and update kernel on RHEL 5.x,6.2 CentOS 4.x, 5.x and 6.5 servers using RPM, YUM and maintained them in accordance with established policies, procedures and service level agreements.
  • Worked on solaris 10 container technologies, created zones and installed applications on separate responsible for configuring and maintaining global and local zones.
  • Installation, configuration and administration of Veritas cluster server, Apache, samba, Web Sphere & Web Logic Application Servers. Configured new service group and resources for new application in Veritas Cluster server.
  • Adding Oracle ASM disk to the server. Creating managing volumes using LVM.
  • Performed automated installations of Operating systems using Jumpstart for solaris and kickstart for Linux.
  • Expertise in configuration of NIS, NFS, DNS, DHCP, FTP, LDAP and web servers.
  • Created disk groups, volumes with RAID architecture and layered volumes using VxVM.
  • Monitoring system resources, logs, disk usage, scheduling backup and restore.
  • Extensively worked on hard disk mirroring and stripe with parity using RAID controllers.
  • Experience in building Linux servers by using VMware ES X 5.0.
  • Troubleshooting Backup and Restore problems Creation of LVMs on SAN using Linux utilities, Monitored overall system performance, performed user management, system updates and disk and storage management.

Environment: Solaris 9/10, Linux RHEL 6/7, T-series and M-series servers, Dell and HP servers, NFS, VxVM, shell scripting, Apache Web server.

Confidential, NC

Linux/Unix System Administrator

  • Installation, configuration, administration of RHEL 6/7 and solaris 8/10 using kickstart, Jumpstart, custom configuration like package management, volume management of servers.
  • Hands on knowledge in the deployment, configuration and optimization of vmware technologies including vc center server, ESXi, virtual networking.
  • Involved installation and managing different automation and monitoring tools on Redhat Linux like Nagios, bash and python scripts.
  • Creating, installing, and configuring Zones, LDOMs in Sun solaris 10.
  • Having good knowledge about Veritas volume system, Solaris volume system and logical volume manager and having knowledge on splunk.
  • Technical and troubleshooting with relational database (MySQL, Sysbase).
  • Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
  • Configuring SUDO and granting root users for performing certain activities.
  • Troubleshooting backup and restore problems and constant monitoring of system performance.
  • System Administration and Support of UNIX and Linux servers.
  • Monitored servers for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
  • Setup NFS filesystem, configuration of DNS, and more about autofs.
  • Systems administration, maintenance, and monitoring various day-to day operations.
  • Performed day-to-day troubleshooting for the end users on Solaris based application.

Environment: Solaris 9/10, RHEL6/7, SUN Enterprise Servers, VERITAS Volume Manager 4.x, Shell scripting, Web logic, Tomcat.

Confidential - Newark, DE

Linux/Unix System Administrator

  • Installation & Configuration of Red Hat Enterprise Linux, Fedora Linux and CentOS, Maintenance & System Administration.
  • Managing package install/upgrades using YUM and RPM.
  • Performed automated installations of operating systems using jump-start for Solaris and kickstart for Linux server.
  • Creating the file system, exporting, importing file systems, tuning, growing, shrinking, using Veritas File system.
  • Creating and routing of tickets for configured Logical Volume Manager which involved create and modify file system, logical volume, physical volume, Volume groups, mirroring and UN-mirroring of volume groups.
  • Back end solution, Day to day system Admin & Monitoring, File system management and disk management.
  • Experience with ticketing tool such as Remedy.
  • Implementation and troubleshooting of network services like NFS, FTP, NTP, telnet, SSH.
  • Performed application installation and management on Unix and Linux servers.
  • Provided customer support, help/troubleshoot users to resolve server, network and other system wide problems.

Environment: Solaris 9/10, RHEL 5/6/7, SUN servers T-series and M-series servers, Dell and HP servers, shell scripting, NFS, Veritas suite.

Confidential

Linux/Unix System Administrator

  • Installed, optimized and configured new servers and application upgrade in existing network environment as per requirements.
  • Configured (data-migration, filesystem creation, system security).
  • Performed troubleshooting and provided resolutions for sever and internet problems.
  • Maintained the timely back-up of important data and management resources.
  • Implemented proper recovery procedures for disasters and administer of user-account, mailbox.
  • Monitored servers for CPU Utilization, Memory Utilization, and Disk Utilization for performance monitoring.
  • Administration in Solaris/Veritas Volume Manager.
  • Wrote various UNIX shell scripts.
  • Server Virtualisation using Solaris Containers (zones) and VM ware.
  • Configuring distributed file system and administering NFS server and NFS clients and editing auto-mounting mapping as per system/user requirements.
  • Performed day-to-day troubleshooting for the end users on Solaris and Linux based application.
  • Product development and administration of managed services, dedicated Linux servers, and web hosting platforms.
  • Managed physical and logical volumes, Volumes Groups, using Logical Volume Manager.
  • Implemented file sharing on the network by configuring NFS on the system to share essential resources.

Environment: Solaris, Linux, Jumpstart, SANDBANK, RAID, NFS, VERITAS Suite, Oracle, Apache, Zones, VM ware, Sun Fire servers- V490, V880, T2000, M5000, VM ware.

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