WebYaST (openSUSE conference 2010)
- 1. WebYaST Remote Web Based System Management Ladislav Slezák [email protected] SUSE Linux s.r.o.
- 2. © Novell Inc. All rights reserved2 Content • YaST • WebYaST features • WebYaST demo • Implementation details, solved problems • Installation, customization • Questions
- 3. YaST
- 4. © Novell Inc. All rights reserved4 YaST – Yet another Setup Tool • System management tool for Linux • System installer • Open source (GPLv2+) • Included in openSUSE, SUSE Linux Enterprise • Desktop application, administration account needed
- 5. © Novell Inc. All rights reserved5 YaST – Installation
- 6. © Novell Inc. All rights reserved6 YaST – Control Center
- 7. © Novell Inc. All rights reserved7 YaST – Package Manager
- 8. © Novell Inc. All rights reserved8 YaST – Package Manager
- 9. WebYaST
- 10. © Novell Inc. All rights reserved10 WebYaST Features • Successor to YaST • Access via a web browser • Open source (GPLv2 and LGPLv2)
- 11. © Novell Inc. All rights reserved11 WebYaST – Target Users • Beginner users • Experts (remote system monitoring) • Appliance (virtual machine) management – e.g. SUSE Lifecycle Management Server (SLMS)
- 12. © Novell Inc. All rights reserved12 Comparing YaST and WebYaST YaST SSH VNC HTTPS • Remote access WebYaST • No special SW needed, just a web browser • OS/HW independent
- 13. © Novell Inc. All rights reserved13 Comparing YaST and WebYaST • Authorization and security YaST WebYaST • No password sharing • Access control • Role based access Admin Password User administrator SW administrator ? Linux System User administrator SW administrator User's password User's password Access rights Access rights Linux System
- 14. WebYaST Demo
- 15. © Novell Inc. All rights reserved15 WebYaST
- 16. © Novell Inc. All rights reserved16 WebYaST
- 17. © Novell Inc. All rights reserved17 WebYaST
- 18. © Novell Inc. All rights reserved18 WebYaST
- 19. © Novell Inc. All rights reserved19 WebYaST
- 21. © Novell Inc. All rights reserved21 YaST Architecture UI (Qt, Gtk, ncurses) Application Logic Low Level Access System Privilegeduser(root) YaST
- 22. © Novell Inc. All rights reserved22 WebYaST Architecture – Overview Web browser Web client HTML/HTTPS XML/HTTP Web service (REST service) System Non-privileged user Non-privileged user WebYaST ?
- 23. © Novell Inc. All rights reserved23 WebYaST Architecture – Details Web browser Web client HTML/HTTPS XML/HTTP Web service (REST service) YaST DBus service PackageKit System Non-privileged user Non-privileged user Privileged user DBus Directnon-privilegedaccess ... RESTServiceWeb Client WebYaST
- 24. © Novell Inc. All rights reserved24 WebYaST – Details • WebYaST uses Ruby on Rails framework • Reusing existing YaST code UI (Qt, Gtk, ncurses) Application Logic Low Level Access System Privilegeduser(root) DBus Wrapper DBus Access control PolicyKit DBusservice LegacyYaST
- 25. © Novell Inc. All rights reserved25 REST Service • The backend which actually configures system • XML or JSON format over HTTP • Can be also used by 3rd party software – or from commadline (via curl, wget)
- 26. © Novell Inc. All rights reserved26 REST Service • Key components/features – Small privileged part – DBus service – Access control – using PolicyKit – Reusing existing YaST components
- 27. © Novell Inc. All rights reserved27 Web Client • HTML output over HTTPS • Key features – XML communication with REST – Rails ActiveResource – Cross-browser compatibility – jQuery JavaScript library – Localization support – GetText
- 28. © Novell Inc. All rights reserved28 Web Client – Customization • First boot mode – first time configuration – Set of modules started before the main application – Started just once – Example: license agreement, root password, registration • Custom icon/link in the control panel, custom label • Custom CSS (layout, colors, ...)
- 29. © Novell Inc. All rights reserved29 WebYaST – Customization
- 30. © Novell Inc. All rights reserved30 WebYaST – Plugins • Plugin design – Similar to legacy YaST – Basic and shared functionality in base packages – Plugins implement the actual functionality > Decrease package dependencies > Install only the needed modules (security) • Plugins make WebYaST easily extensible
- 32. © Novell Inc. All rights reserved32 WebYast – Installation • Already preinstalled – WebYaST in an appliance • Installing from RPM packages – http://download.opensuse.org/repositories/YaST:/Web/ – Start yastws and yastwc system services – Open webyast-ui firewall port (optional for remote access) – Open https://localhost:54984 in your browser • Running directly from sources (GIT) – The latest version for developers – See http://en.opensuse.org/YaST/Web/Installation
- 33. © Novell Inc. All rights reserved33 WebYaST – Development • Interested in WebYaST development? • Open source (GPLv2 and LGPLv2) • Contact: – [email protected] – IRC freenode.net #yast • Bug reporting – http://bugzilla.novell.com, product: WebYaST
- 34. © Novell Inc. All rights reserved34 Resources • WebYaST Documentation – http://en.opensuse.org/WebYaST • User and Vendor Guide – http://www.novell.com/documentation/webyast/ book_webyast_use/data/cha_webyast_user_overview.html – http://www.novell.com/documentation/webyast/ book_webyast_vendor/data/cha_webyast_vendor_overview.html • General Terms – REST: http://en.wikipedia.org/wiki/Representational_State_Transfer
- 35. Questions?