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Linux System Administrator Resume

Denver, ColoradO

SUMMARY:

  • 20 years UNIX/Linux experience
  • VMware architecture and administration
  • Learn new skills quickly and independently
  • Detail - oriented, fast and accurate work
  • Outstanding troubleshooting skills including networking and storage
  • Experience with large, diverse production environments
  • Excellent written and verbal communication
  • Handle emergency situations calmly and efficiently

SKILLS:

Operating Systems:

Linux: Red Hat Enterprise Linux 3-7, CentOS, Debian, Ubuntu, Fedora, Solaris 8-10, HP-UX 10-11

Software: VMware/ESX 3.5-5.5, DRS, HA

Veritas: Volume Manger, Cluster Server (VCS), NetBackup

HP: OpenView/ITO/VPO, ServiceGuard

Misc: Linux Kickstart, Solaris Jumpstart, OpenLDAP, NIS+, NIS, DNS, NFS, SSH, Samba, Apache Web Server, Ansible

Hardware:

HP: C7000 Blade Enclosures, BL495 Blades, Flex10 Network Adapters, Superdome, RP, RX and DL class servers

Sun/Oracle: M8000, M5000, T5240, T4, Sun Fire through 6800, Enterprise through 6500

EMC: DMX, Symmetrix, Clariion

NetApp: FAS, VTL

Misc: Brocade fiber switches, Sun/Oracle/Storage Tek tape libraries

PROFESSIONAL EXPERIENCE:

Confidential, Denver, Colorado

Linux System Administrator

Responsibilities:

  • Administered VMs using Ansible and shell scripts.
  • Tightened security and improved user management process.
  • Managed VMs using CloudForms.

Confidential, Denver, Colorado

Linux and Virtualization Engineer

Responsibilities:

  • Managed 300+ VMs in production/lab environments.
  • Stabilized environment by rebuilding ESX clusters to 5.5, enabling HA and DRS, reprovisioning storage to enhance I/O performance. HP server hardware, Dell Compellent iSCSI storage.
  • Troubleshooting of storage issues and improving performance and reliability. VMs running mostly CentOS 6.x.

Confidential, Westminster, Colorado

Linux and Virtualization Engineer

Responsibilities:

  • Servers, VMware and storage for DataMAPt, a startup company operating from Monument, Colorado.
  • Improved performance, redundancy, reliability and standardization with a very limited budget.
  • Implemented shared NFS storage for ESX servers, better performance on NFS server for database backups and home directories, rebuild of a DMZ mail server formerly running on outdated hardware.
  • Analysis and recommendations for single points of failure in the production and infrastructure environments.
  • Installed VMware vCenter Server to enable clustering, monitoring and easier management of ESX servers.
  • Performance analysis and improvements on poorly running servers, email and LDAP system analysis, standardization of server builds using kickstart.
  • Supported OS versions include CentOS 6, Debian 7, ESX 5.1/5.5, Solaris 10 x86, FreeBSD 8 and Windows Server 2008.

Confidential, Broomfield, Colorado

UNIX Systems Administrator

Responsibilities:

  • Server builds, application troubleshooting.
  • Oracle Solaris 10, Oracle VM Server (LDOMs).

Confidential, San Jose, California

UNIX Engineer

Responsibilities:

  • Worked on a team to migrate several hundred servers from Juniper Networks' Sunnyvale data center to Sacramento.
  • Performed P2V migrations for Linux servers to VMware, V2V migrations for Linux and Windows servers from VMware ESX 3.5 to ESX 5.1, V2V migrations for Solaris zones, and assisted remotely for UNIX and Windows physical migrations.
  • Installed and configured VCS (Veritas Cluster Server) for Solaris to fail over zones running production Oracle databases from one global zone to another.
  • SAN, VCS, VXVM, VXFS, ESX 3.5-5, VMware, Red Hat 4-5, Solaris 8-10, Hitachi and Violin storage, Sun/Oracle T4, T5240, M5000 and M8000 hardware, HP DL580 hardware.

Confidential, Centennial, Colorado

UNIX/Virtualization Engineer

Responsibilities:

  • UNIX/Linux System Administrator responsible for OS builds, standardization and automation.
  • Virtualization Engineer responsible for architecture, implementation and operation of VMware environments running on HP Blades and NetApp NFS storage.
  • Helped other virtualization teams troubleshoot performance issues on different VMware hardware platforms.
  • Implemented OpenLDAP user authentication, Red Hat kickstart OS build/upgrade/patch system, and Hobbit monitoring systems.
  • OpenLDAP, NIS, DNS, NFS, SSH, Samba, Apache Web Server, ESX 3.5-5, VMware, Red Hat 3-5, Solaris 8-10, EMC Symmetrix and Clariion storage, NetApp FAS and VTL storage, HP C7000 blade enclosures, HP BL495 blades, Flex10 network adapters.

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