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Copyright 2010, USC/ISI. All rights reserved. ProtoGENI from Outside Ted Faber University of Southern California Information Sciences Institute

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Presentation on theme: "Copyright 2010, USC/ISI. All rights reserved. ProtoGENI from Outside Ted Faber University of Southern California Information Sciences Institute"— Presentation transcript:

1 Copyright 2010, USC/ISI. All rights reserved. ProtoGENI from Outside Ted Faber University of Southern California Information Sciences Institute faber@isi.edu

2 Copyright 2010, USC/ISI. All rights reserved. TIED and ProtoGENI  TIED: DETER Federation system  Forms experiments from many testbeds  Shared services  File systems (SMB), User accounts, SEER experiment control  New for GEC7: ProtoGENI support  V1 API  We sit between users and facilities

3 Copyright 2010, USC/ISI. All rights reserved. Architecture

4 Copyright 2010, USC/ISI. All rights reserved. Topics  Elephant: Image  User Credentials  Slice Credentials  Soft State  Renewals  Nits

5 Copyright 2010, USC/ISI. All rights reserved. The Elephant in the Room  Red Hat 9 is really old  Significant time/development in updating  yum.conf points to dead repository  http://fedoralegacy.lsu.edu http://fedoralegacy.lsu.edu  Real usability issue for experimenters

6 Copyright 2010, USC/ISI. All rights reserved. User Credentials  Seem redundant with the X.509 ID  Can one delegate a Principal credential?  Need the X.509 client certificate to make calls, so the role of this certificate is unclear  Why does a user need this?

7 Copyright 2010, USC/ISI. All rights reserved. Slice Credentials  Used more like capabilities/file handles  Both identify and grant permissions  Not a bad thing  Can I get one with a nonce HRN?  Separate the delegation out  Bias Alert: Schwab & Co.'s ABAC  Never used a sliver credential...

8 Copyright 2010, USC/ISI. All rights reserved. Soft State  Soft State Slices and Slivers: big win  Greatly simplifies something like TIED  Essentially garbage collects resources  Registry does not seem to time out Slice names  Unnecessary “timed out but here” state

9 Copyright 2010, USC/ISI. All rights reserved. Renewal Interface  Renew call should return new slice credential  Current interface requires a lookup and retrieval after success  If you want a sliver credential, another lookup...  I never used one, so...

10 Copyright 2010, USC/ISI. All rights reserved. Nits  Some unexpected errors:  Real valued bandwidth in request  Error code 2 with no text  Bandwidth w/o latency in request/ticket  Redeem always fails. Error is vague.  Error codes – good design  Could use a list  Had to discover 14 (EAGAIN)


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