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Exorcising Ghost: Windows Imaging at Stanford

Formerly Residential Computing, now managing machines in residences, libraries, and public areas at Stanford University. Focus on efficient image distribution, hardware independence, remote maintenance, and security. Innovative strategies including Ghost, network-based configuration, and remote access. Machine life cycle management and future plans for improved monitoring and dual-boot options.

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Exorcising Ghost: Windows Imaging at Stanford

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  1. Dustin King Windows Image Developer Student Computing Stanford University daking@rescomp.stanford.edu Exorcising Ghost:Windows Imaging at Stanford

  2. Student Computing • Formerly Residential Computing • Not central IT • Manage machines in residences, libraries, other public areas • Minimal Windows server infrastructure

  3. Types of Images • Cluster • Standard • Conference • TeamSpot • Kiosk • Public • Stanford • Multimedia Studio • Language Lab • Floor • Classroom

  4. Imaging Goals • Flexibility • Differentiated services • Simple hardware redeployment • Reliabilty • Low downtime • Quickly distribute revisions • Security • Ease of maintenance • Few images • Remote maintenance

  5. Strategies • Efficient image distribution • Hardware independence • Network-based configuration • Patching • Remote access

  6. Efficient Image Distribution • Ghost • Partitioning scheme • FreeDOS, image file storage • Windows installation • User file storage • Local ghosting • BITS • PXE booting

  7. Hardware Independence • Sysprep

  8. Network-based configuration • Hostname convention • m200-cl-03-g280 • mll-ll-17-g620 • cubb-ki-02-s280 • cubb-cl-02-s280 • Departmental web space • Flat text files (csv)‏

  9. # PrinterGroups.csv # ================= # Format: # Group Name,Hostname Prefix,Printer 1,Printer 2,Printer 3,... # # A default printer will be chosen from those printers marked with leading *. # At least one printer MUST be marked as default. # Meyer and Tresidder Meyer First Floor,m100,*Rosanne,Leela Meyer 24-hour Study Room,m160,*Rosanne,Leela Meyer First MMS,mms-25-d270t-cl,*Rosanne,Leela Meyer Second Floor,m200,*Kenny,*Kramer,Color-LaserJet-Fry,HI_SPEED_COLOR Multimedia Studio,mms,*Kenny,*Kramer,Color-LaserJet-Fry,HI_SPEED_COLOR Tresidder,tres,*Rhino,Hippo Example Configuration File

  10. Network-based configuration • Hostname convention • m200-cl-03-g280 • mll-ll-17-g620 • cubb-ki-02-s280 • cubb-cl-02-s280 • Departmental web space • Flat text files (csv)‏ • Python startup scripts • Examples • Printing • Conference machines

  11. Patching • Python startup scripts • Versioning • Examples • Nero upgrade • Updating labstats.conf, bits.pl • SPSS activation • Eclipse installation • VMware Player installation

  12. Remote Access • Remote desktop • Cygwin • OpenSSH • Replace Windows file sharing with scp • Uses • Troubleshooting and repair • Initiating local ghosting

  13. Machine Life Cycle • PXE boot • Download and install image • Sysprep • Hostname-based customization • Homepage • Printers • Patching • Bug fixes • Management tools updates • Software installations/activations/updates

  14. Machine Life Cycle (cont.)‏ • New quarterly image • BITS • Local ghosting • Machine-specific problems • Example: corrupt Firefox profileFix using ssh, scp • Example: corrupted Windows installFix using local ghosting • Redeployment for summer conference • Local ghosting • Hostname-based configuration

  15. Future Plans • Modular images • Better monitoring • Dual-boot labs

  16. Questions?

  17. daking@rescomp.stanford.edu Thanks

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