1 / 21

Web hosting services at CERN

Web hosting services at CERN. Alex Lossent – CERN IT/IS Hepix Fall 2005. Agenda. Presentation of the service Demo Service infrastructure Recent achievements Future. Agenda. Presentation of the service Demo Service infrastructure Recent achievements Future. CERN Web Services.

rivka
Download Presentation

Web hosting services at CERN

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Web hosting services at CERN Alex Lossent – CERN IT/IS Hepix Fall 2005

  2. Agenda • Presentation of the service • Demo • Service infrastructure • Recent achievements • Future Alex Lossent

  3. Agenda • Presentation of the service • Demo • Service infrastructure • Recent achievements • Future Alex Lossent

  4. CERN Web Services • Mandate • Provide a managed infrastructure for CERN users to publish web content • Provide users with authoring and publishing tools • Reduce “locally (un-)managed” web servers • CERN IT/IS Group (mail, Windows environment) • 3 tasks • Operate the central web hosting infrastructure • Provide self-service site management interface • User support Alex Lossent

  5. Figures • Infrastructure • 25 production servers • Hosting > 7000 web sites • Serving ~ 2’000’000 requests/day • People • Helpdesk provides 1st & 2nd level support • 1.5 “FTE” • Students and associates Alex Lossent

  6. CERN Web Services • Self-service site management interface • On-line documentation • Site creation, deletion • Management of permissions & access restrictions • Management of site & folder properties • script/CGI execution • Visibility (internal/world-visible) • Require HTTPS • http://cern.ch/web Alex Lossent

  7. Demo • Self-service site creation Alex Lossent

  8. Agenda • Presentation of the service • Demo • Service infrastructure • Recent achievements • Future Alex Lossent

  9. Service infrastructure • Windows (2003 Server) + Linux (SLC3) • Runs on top of CERN’s Windows & Linux server environment • Monitoring, HW/SW maintenance • Different server roles • Hosting servers (11) • Gateways to distributed file systems (4) • Infrastructure support (6) • redirectors, administration, search engine • “Customized” hosting servers (5) Alex Lossent

  10. Support for web applications • Various technologies are provided for web application development • ASP, ASP.NET, Perl, PHP • Supported on central Hosting Servers • Databases: MS Access, Oracle (IT/DES) • AFS folders: PHP, CGI (Perl etc.) • Java/servlet web application hosting • Operated by IT/DES • Access control with NICE accounts/groups Alex Lossent

  11. Authoring • Supported authoring software • Frontpage 2003, Dreamweaver • Visual Studio .NET for ASP.NET applications • Several ways for authors to access site files • Direct file access • WebDAV • Web interface • FPSE Alex Lossent

  12. User recommendations • Recommended technologies are: • Centrally hosted web sites • Authoring with FrontPage 2003 • Dynamic content with ASP (VBScript) • Efforts focused on supporting that environment • Also supported: Dreamweaver • Static content Alex Lossent

  13. About URLs • Web sites are published as http://www.cern.ch/mySiteName • This is translated to http://mysitename.web.cern.ch/mySiteName • Why? • Many web sites & servers • No virtual hosting so as to support HTTPS • Web sites are 1st-level folders of a physical web server • Web server’s name abstracted with DNS alias • “Web redirectors” are in charge of the translation • Flexible implementation for integration of non-central sites • Support for external DNS names Alex Lossent

  14. DNS zones http://www.cern.ch/web Web namespace 302 Redirect Web browser http://webservices.web.cern.ch/webservices Web redirectors Redirectors Web servers Alex Lossent

  15. Agenda • Presentation of the service • Demo • Service infrastructure • Recent achievements • Future Alex Lossent

  16. Migration to Windows2003 • Many improvements over Windows2000 • Simple “upgrade” was not possible • Tedious migration task • Transparent for users Alex Lossent

  17. Support for PHP • Popular technology • Many useful applications already exist • PhpBB, wikis… • PHP4 • A few problems • Bugs in the Windows port • No version upgrades on SLC, only security fixes • Version compatibility Alex Lossent

  18. Java/servlet web hosting • Provide a central service and limit “locally managed” servers • Service operated by IT/DES • Tomcat 5.5, EJB not supported • Multi-hosting with site isolation • Integrated with central web services • Managed from the same web interface • NICE authentication • Production since September 05 • ~10 production applications + test/dev • half migrated from existing servers • 5 servers allow ~200 applications Alex Lossent

  19. New webservices site • Consistent look & usage with other IT/IS services • Technology upgrade • ASP.NET/SOAP vs. ASP/VB6 • Complete documentation rewrite • Simpler, easier access to some features • Security Alex Lossent

  20. Agenda • Presentation of the service • Demo • Service infrastructure • Recent achievements • Future Alex Lossent

  21. What’s next? • Web-hosted collaboration tools • “e-groups”: forum, mailing list, news, shared workspace for file exchange… • Sharepoint, WWF, custom solution? • Support for authentication with certificates • Improved search engine • Support for “External users” Alex Lossent

More Related