HOWTO12 Globus Online cookbook for EGI VOs

This page contains the steps how to use GlobusOnline.eu and enable it on existing storage elements in EGI.

For VO Manager

All commands are performed using gLite UI. EGI VO "lsgrid" is used for examples.

1. Find storage elements available for your VO.

-bash-3.2$ lcg-infosites --is bdii.grid.sara.nl --vo lsgrid se 
 Avail Space(kB)  Used Space(kB)  Type 	SE
------------------------------------------
< output truncated >
       717032688       382478939  SRM  	se.grid.rug.nl
     17542103037       460842863  SRM  	se.lsg.hubrecht.eu
     16560797796      1442148104  SRM  	se.lsg.psy.vu.nl
     58680692895             n.a  SRM  	srm.grid.sara.nl
     14994733204         5266796  SRM  	srm.grid.sara.nl
             n.a             n.a  SRM  	srm.grid.sara.nl

2. Find the SRM endpoint for chosen storage element.

-bash-3.2$ lcg-info --list-service --bdii ldap://bdii.grid.sara.nl:2170 --vo lsgrid --query 'ServiceType=SRM' --attrs 'ServiceEndpoint'| grep srm.grid.sara.nl
- Service: httpg://srm.grid.sara.nl:8443/srm/managerv2
  - ServiceEndpoint     httpg://srm.grid.sara.nl:8443/srm/managerv2

3. Find your VO home directory path for the SRM endpoint.

lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo lsgrid --query 'SE=srm.grid.sara.nl' --attrs 'VOInfoPath'
- SE: srm.grid.sara.nl
  - VOInfoPath          /pnfs/grid.sara.nl/data/lsgrid

4. Find if SRM endpoint is the real storage endpoint by attempting file copy.

-bash-3.2$ touch test
-bash-3.2$ srmcp -2 file:///test srm://srm.grid.sara.nl:8443/pnfs/grid.sara.nl/data/lsgrid/test -debug
Storage Resource Manager (SRM) Client version 2.1.5-16
< output truncated >
copying CopyJob, source = file:///test destination = gsiftp://bee51.grid.sara.nl:2811/pnfs/grid.sara.nl/data/lsgrid/test
execution of CopyJob, source = file:///test destination = gsiftp://bee51.grid.sara.nl:2811/pnfs/grid.sara.nl/data/lsgrid/test completed
< output truncated >

From this line "copying CopyJob, source = file:///test destination = gsiftp://bee51.grid.sara.nl:2811/pnfs/grid.sara.nl/data/lsgrid/test" in the log we see that there is another host (bee51.grid.sara.nl) used by SRM to transfer files via GridFTP. This host (bee51.grid.sara.nl) and must be used at GlobusOnline.eu.

5. Go to GlobusOnline.eu.

  5.1 Create account with your VO name e.g. lsgrid.
  5.2 Go to "Manage Endpoints" and click "Add Endpoint".
  5.3 Filling the endpoint details:

      Name lsgrid# < enter name of the Storage >  (e.g. SARA)
      Short Description: < enter description > (e.g. VO default path for this storage - /pnfs/grid.sara.nl/data/lsgrid/)
      Server Address gsiftp:// < storage hostname with GridFTP access > (e.g. bee51.grid.sara.nl)
      Visible To: Anyone (public)
      

Set the Identity Provider to be used with this endpoint.

      Type: MyProxy
      MyProxy Hostname: < myproxy server for your VO > (e.g. px.grid.sara.nl)