| 1 | Introduction ================================================================== |
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| 2 | |
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| 3 | These are the release notes for version 0.5.2 of Tycoon. This version |
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| 4 | consists of the work of several developers over sixteen months and |
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| 5 | over 700 revisions. Contributors include Savio Fernandes, Roman |
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| 6 | Kurakin, Kevin Lai, and Thomas E. Sandholm. |
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| 7 | |
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| 8 | The changes in this version are focused on improving the scalability |
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| 9 | and stability of the system while upgrading to new version of various |
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| 10 | components like Xen 3.0. The key new features: |
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| 11 | |
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| 12 | 1) Support for Xen 3.0. This version is significantly more robust and |
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| 13 | efficient than previous versions. |
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| 14 | |
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| 15 | 2) New bank and bank protocol. There is a new bank implementation and |
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| 16 | associated bank protocol that closes several security holes and scales |
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| 17 | to more uses. The bank server itself is not part of this release and |
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| 18 | will be released within a few weeks. |
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| 19 | |
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| 20 | 3) The ability to request file system image from a remote URL. Users |
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| 21 | can ask the auctioneer to use a file system image downloaded from a |
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| 22 | url to create user accounts. |
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| 23 | |
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| 24 | 4) Support for creating accounts with multiple CPUs. |
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| 25 | |
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| 26 | The current plan in 2008 largely depends on what the user community is |
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| 27 | interested in. The tentative roadmap http://tycoon.hpl.hp.com/roadmap |
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| 28 | includes work on improved testing, documentation, and ease-of-use. |
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| 29 | |
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| 30 | Upgrading ===================================================================== |
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| 31 | |
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| 32 | Be sure to backup important data from inside your host accounts before |
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| 33 | doing any upgrades. This version is mostly command line compatible |
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| 34 | with earlier versions, but not protocol compatible. As a result, you |
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| 35 | should upgrade your clients and resource providers at the same time. |
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| 36 | |
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| 37 | Version 0.5.2 is in the Tycoon yum repository, so upgrade by doing |
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| 38 | |
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| 39 | $ yum -y update |
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| 40 | $ service tycoon_aucd restart |
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| 41 | |
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| 42 | We have made every effort to automatically upgrade existing host |
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| 43 | accounts. However, there may be situations where the new Auctioneer |
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| 44 | fails at this. The least intrusive solution is to use "tycoon host |
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| 45 | delete_account" to delete the problematic account and then "tycoon |
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| 46 | host create_account" to re-create it. If that doesn't work, you may |
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| 47 | have to stop the Auctioneer, "rm -fr /home/{username}", restart the |
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| 48 | Auctioneer, and have users recreate their host accounts. |
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| 49 | |
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| 50 | Remaining Issues ============================================================== |
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| 51 | |
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| 52 | 1) As mentioned earlier, this version is not network protocol |
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| 53 | compatible with earlier versions, so you should try to upgrade |
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| 54 | both your clients and resource providers at the same time. |
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| 55 | |
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| 56 | Local Variables: |
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| 57 | mode:text |
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| 58 | End: |
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