Jens G Jensen CCLRC e-Science Single Sign-on to the Grid Federated Access and Integrated Identity Management.

Jens G Jensen

CCLRC e-Science

Single Sign-on to the Grid

Federated Access and

Integrated Identity Management

Jens G Jensen

CCLRC e-Science

The Problem

• Scope: CCLRC– But extending

• CCLRC facilities– DLS, ISIS, CLF, SRD

• Access to Grid– NGS, SCARF– The SRBs– Atlas Tapestore

Jens G Jensen

CCLRC e-Science

What’s in SSO?

• Identity and User Management

• Credential conversions

– Certificates, AD/K5

– Protection of credentials

• Thin clients vs thick clients

• Passwords and -phrases

– Single password to all resources

Jens G Jensen

CCLRC e-Science

Authentication – web based

• If on-site, use federal id

• If off-site, use certificate

– if loaded into browser

• Otherwise username/password

– Same as fed username/password

– Not allowed to store password…

• System must know these are the same

Jens G Jensen

CCLRC e-Science

Web (HTTPS) based SSO

• Easier to implement servers– Apache can do Everything™– Not trivial to integrate with existing Java

portals– Apache vs Tomcat, StringBeans, uPortal,

CHEF, SAKAI,…• Lots of HTTP tools that understand security• Future proof, when UK goes to Shibboleth

Jens G Jensen

CCLRC e-Science

Client Side – from outside CCLRC

P

O

R

T

A

L

VOMS

THE GRID

Certificate

SRB

(old slide)

Jens G Jensen

CCLRC e-Science

Client Side – from within CCLRC

P

O

R

T

A

L

MyProxy VOMSMicrosoft

ActiveDirectory

THE GRID

SRB

(old slide)

Jens G Jensen

CCLRC e-Science

SRB

• SRB provides SSO• But ∫ with everybody

else’s…• S commands can be

used with GSI and with username/password

• inQ doesn’t understand certificates

THE GRID

SRB

THE BEAM

Jens G Jensen

CCLRC e-Science

Detector ADSC

RAID 2TB

ADSC

RAID 2TB

ADSC

RAID 2TB

20TB SRB Vault

20TBSRB Vault

20TB SRB Vault

ADS Resource

ADS Resource

20TBSRB Vault

160TB SRB Vault

SRB space…

…

Proposed DIAMOND Infrastructure

Slide sto borrowedfrom P Berrisford

Jens G Jensen

CCLRC e-Science

Proposed DIAMOND Phase 1Test Infrastructure

‘20 TB’Vault

SRB ADS cache

SRB ADS tape resource

SRB Storage Server

SRB MCAT Server

SRB ADS Server

MCATDatabase

Data Management Group

Data Storage Group

DIAMOND

Slide borrowedfrom P Berrisford

Jens G Jensen

CCLRC e-Science

What’s in a name

• Federal id – jj47@fed.cclrc.ac.uk• DN - /C=UK/O=eScience/OU=CLRC/L=RAL/CN=jens g jensen

• SRB username, fed id or based on CN

• Tapestore username – arbitrary: jj47

– or based on VO (via SRM or SRB)

Jens G Jensen

CCLRC e-Science

Status – User Office

• Set up identities

• Maintain identities

• Registration Authority for CA

• Needs user office friendly tools

• Challenge: ensure user offices are consistent

– Namespaces, identities

Jens G Jensen

CCLRC e-Science

Status – Users

• Need certificates for Grid work• Once every year, obtain/renew cert

– Usability of CA improved with upgrade– Will resurrect applets

• Once every week, renew proxy– Upload tool in Java, another in python

• Once every day– Log in to Windows (or Linux kinit)

Jens G Jensen

CCLRC e-Science

Status – software

• Prototype portal (python)

– Thin clients (web browser)

– Fetches proxy from myproxy

– AD/K5 works with IE and certain Linux browsers

• Components for thick clients

– Fetches proxy locally from MyProxy

Jens G Jensen

CCLRC e-Science

Authorisation – VO mgmt

• Agree roles (between facilities)

• Need for tools

– Track project proposal

• Infrastructure

– LDAP/GridMap

– VOMS

– (future things)

Jens G Jensen

CCLRC e-Science

User Information

CDRUser Database

DLS, SRS ISIS

Grid SSTD,CLF,…

e.g. NGS, SCARF,Datastore

Jens G Jensen

CCLRC e-Science

MicrosoftActive

Directory

Authorisation

CDR

LDAP

VOMS

MyProxy?

Gridmapfile

Jens G Jensen

CCLRC e-Science

Combining Grid Authorisation

LDAP

LDAP

LDAP

CCLRC

NGS

LCG

GridAUZ

Jens G Jensen

CCLRC e-Science

Keeping identities

First attempt

Second attempt

Jens G Jensen

CCLRC e-Science

The Who

• CCLRC e-Science/GOSC– D Byard, M Viljoen (code)

• CCLRC e-Science Data Management– SRB work

• CCLRC e-Science Atlas Tapestore• CCLRC BITD

– Database• Facilities – Diamond, ISIS, CLF, SRD

Jens G Jensen

CCLRC e-Science

Future work

• VOMS• Extending collaboration

– Related Shib work with Oxford• Grid access for non-certificate users• DLS & IB very interested

(+BDWorld?)• Ponder credential conversions

– And protection

Jens G Jensen

CCLRC e-Science

Summary

• Prototype SSO access to Grid

• Existing implementations, added glue

• Loads of other minor things that need doing

• Integrating with other SSO efforts

• Facilities’ user offices maintain ids

• More authorisation work req’d