Tier Zero Information

CERN provides a number of services for the Service Challenge. these are mostly connected to the high-performance network links, providing outward connectivity to the Tier-1 sites at up to 10Gb/s per site. More information on the physical network topology are at External Network Topology.

The deployed services and their location are shown below (full resolution): 0511-CERN-SC-Nodes.png

Interactive Login on Nodes

By default, interactive login is not available on the service nodes - this includes the disk servers acting as pool nodes for castorgridsc.cern.ch. Interactive login is provided on the following nodes:

Node Usage
lxb1387.cern.ch User Interface
sc3-fts.cern.ch FTS Node - useful for checking processes running
oplapro80.cern.ch User Interface (IA64 with 1G I/F card)

SRM Details for castorgridsc.cern.ch Cluster

SRM Host
castorgridsc.cern.ch

Details
Load-balanced CASTOR SRM on high performance external network. Can only transfer to SRM hosts detailed in TierOneConfiguration. Has 2x1Gb/s network connection into the CERN LAN (which contains experiment specific stagers and tape hosts). There is ~20TB of storage space associates with the stager.

Source Datasets
There are some source datasets staged already on the box - note that these are disk-only datasets, they are not staged from tape. These can be listed by doing an nsls against the castor nameserver. More datasets will appear soon!

Dataset Path Description
/castor/cern.ch/grid/dteam/storage/transfer-test/castor2/001/... Sample dataset of 1000 1gig files (named file-XXX.dat where 0<=XXX<1000=)
/castor/cern.ch/grid/dteam/storage/transfer-test/castor2/s00/... 1000 small files (named file-XXX.dat where 0<=XXX<1000

Destination Path
If you would like to write some test data onto the cluster from a Tier-1 site, you can write into the area /castor/cern.ch/grid/dteam/storage/transfer-test/tmp-output which should be accessible for all VOs.

ServiceDiscovery configuration file for TierZero to TierOne transfers

The attached services.xml file contains the ServiceDiscovery 'file' plugin configuration used by the FileTransferService for TierZero to TierOne transfers. This file reports the FileTransfer, ChannelManagement and MyProxy server endpoints as well as all the SRM server endpoints and mountpoints described in TierOneConfiguration, using the syntax:

  <service name="_service_identifier_">
    <parameters>
      <endpoint>_service_endpoint_</endpoint>
      <type>SRM</type>
      <version>1.1</version>
      <site>_GOC_DB_site_name_</site>
      <param name="SEMountPoint">_SE_path_for_sc3_</param>
    </parameters>
  </service>

Until the BDII configuration will be finilized, this file should be copied in /opt/glite/etc/services.xml on the same node where the FileTransferAgent is installed.

Endpoint

For cut 'n paste, the correct endpoint is:

  <service name='EGEEfts'>
    <parameters>
      <endpoint>https://sc3-fts.cern.ch:8443/site-fts/glite-data-transfer-fts/services/FileTransfer</endpoint>
      <type>org.glite.FileTransfer</type>
      <version>3.0.0</version>
    </parameters>
  </service>
  <service name='EGEEchannel'>
    <parameters>
      <endpoint>https://sc3-fts.cern.ch:8443/site-fts/glite-data-transfer-fts/services/ChannelManagement</endpoint>
      <type>org.glite.ChannelManagement</type>
      <version>3.0.0</version>
    </parameters>
  </service>
  <service name='EGEEstats'>
    <parameters>
      <endpoint>https://sc3-fts.cern.ch:8443/site-fts/glite-data-transfer-fts/services/FileTransferStats</endpoint>
      <type>org.glite.FileTransferStats</type>
      <version>3.0.0</version>
    </parameters>
  </service>

The external endpoint available on the general CERN network, and pointing to the same request store is:

  <service name='EGEEfts'>
    <parameters>
      <endpoint>https://sc3-fts-external.cern.ch:8443/site-fts/glite-data-transfer-fts/services/FileTransfer</endpoint>
      <type>org.glite.FileTransfer</type>
      <version>3.0.0</version>
    </parameters>
  </service>
  <service name='EGEEchannel'>
    <parameters>
      <endpoint>https://sc3-fts-external.cern.ch:8443/site-fts/glite-data-transfer-fts/services/ChannelManagement</endpoint>
      <type>org.glite.ChannelManagement</type>
      <version>3.0.0</version>
    </parameters>
  </service>
  <service name='EGEEstats'>
    <parameters>
      <endpoint>https://sc3-fts-external.cern.ch:8443/site-fts/glite-data-transfer-fts/services/FileTransferStats</endpoint>
      <type>org.glite.FileTransferStats</type>
      <version>3.0.0</version>
    </parameters>
  </service>

-- JamesCasey - 16 Jun 2005

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng 0511-CERN-SC-Nodes.png r1 manage 111.7 K 2005-11-09 - 11:16 UnknownUser  
XMLxml services.xml r1 manage 5.1 K 2005-08-22 - 09:57 UnknownUser ServiceDiscovery configuration files for FTS with all the TierOne SRMs
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Topic revision: r18 - 2007-03-22 - SteveTraylen
 
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