How to access, set up, and test your account

Preliminary steps

All the documentation is maintained in the T3 twiki pages: https://wiki.chipp.ch/twiki/bin/view/CmsTier3/WebHome . Please take a look at it to explore T3's capabilities.

Information about T3 mailing-lists:

  • Please subscribe to the cms-tier3-users list using this web interface (list archives): cms-tier3-users@lists.psi.ch. This mailing-list is used to communicate information on Tier-3 matters (downtimes, etc.) or for discussions among users and admins,
  • To contact the CMS Tier-3 administrators alone, write to: cms-tier3@lists.psi.ch
  • NOTE: Both lists are read by the administrators and are archived. You can submit support requests to either of them. Mails to the user list have the added advantage that they can be read by everyone.

Please also take a look at our policies about usage, quotas etc.. here: Tier3Policies .

Basic setup

We offer the following user interfaces. Please note that there is a convention on which users should access which UIs.

Access to Login nodes is based on the institution

The access is not restricted to allow for some freedom, but you are requested to use the UI dedicated to your institution.

UI Login node for institution HW specs
t3ui01.psi.ch ETHZ, PSI 132GB RAM , 72 CPUs core (HT), 5TB /scratch
t3ui02.psi.ch All 132GB RAM , 72 CPUs core (HT), 5TB /scratch
t3ui03.psi.ch UNIZ 132GB RAM , 72 CPUs core (HT), 5TB /scratch

  1. Try to log in to the User Interface machine (-Y or -X flag for working with X applications. You can also try to connect with NX client, which allows an to work efficiently with graphical applications)
    ssh -Y username@t3ui02.psi.ch
    
  2. If you are an external user and do not have a standard PSI account, you need to change your password the first time you log in. Please use the standard passwd utility.
  3. Copy your grid credentials to the standard places, i.e. to ~/.globus/userkey.pem and ~/.globus/usercert.pem and make sure that the permissions are set correctly like in this output:
    -rw-r--r--  1 feichtinger cms 2961 Mar 17  2008 usercert.pem
    -rw-------  1 feichtinger cms 1917 Mar 17  2008 userkey.pem
    
  4. NEW source a grid environment
    source /swshare/psit3/etc/profile.d/cms_ui_env.sh   # for bash
    source /swshare/psit3/etc/profile.d/cms_ui_env.csh   # for tcsh
    
  5. Try to create a proxy certificate for CMS
    voms-proxy-init -voms cms
    
    If this fails, run the command with an additional -debug flag, and the error message will usually be sufficient for us to point out the problem. Make sure that your certificate is signed up with CMS as in these instructions from our Tier-2 wiki.
  6. Test your access to the PSI Storage element with the test-dCacheProtocols command. You should see output like this (no failed tests):
    $> test-dCacheProtocols
    Test directory: /tmp/dcachetest-20081105-1632-8387
    TEST: GSIDCAP-write ......  [IGNORE]
    TEST: SRMv1-adv-del ......  [SKIPPED] (dependencies did not run:  GSIDCAP-write)
    TEST: GFTP-write ......  [OK]
    TEST: GFTP-ls ......  [OK]
    TEST: GFTP-read ......  [OK]
    TEST: DCAP-read ......  [OK]
    TEST: SRMv1-adv-del1 ......  [OK]
    TEST: SRMv1-write ......  [OK]
    TEST: SRMv1-get-meta ......  [OK]
    TEST: SRMv1-read ......  [OK]
    TEST: SRMv1-adv-del2 ......  [OK]
    TEST: SRMv2-write ......  [OK]
    TEST: SRMv2-ls ......  [OK]
    TEST: SRMv2-read ......  [OK]
    TEST: SRMv2-rm ......  [OK]
    
    Note: This tool can also be used to test remote element access (use the -h flag to get information on it)

Changing your login shell

Write a request to the t3 admin list.

AFS CERN Ticket

You should use the following sequence of commands at T3:
kinit ${Your_CERN_Username}@CERN.CH
aklog cern.ch
The first command gets you a kerberos ticket, the second command uses that ticket to obtain an authentication token from CERN's AFS service

-- DerekFeichtinger - 05 Nov 2008

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Topic revision: r14 - 2012-03-27 - FabioMartinelli
 
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