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Hi Dirk, Ah, a proxy server does not forward the client's credentials. The best you can do it proxy the proxy's credentials and the proxy server needs to be configured to do that (only the client side part needs to enabled). Andy On Fri, 11 Jun 2021, Dirk Sammel wrote: > Hey Petr, > > I'm not talking about the server configuration of the exernal site (Munich), > but about the configuration of the forward proxy server I have set up in > Freiburg. > Sorry if this wasn't clear. > > Cheers > Dirk > > On 6/11/21 6:06 PM, Petr Vokac wrote: >> This doesn't look like server configuration issue, because transfers works >> for me from lxplus.cern.ch with same client, e.g. >> *$ source /cvmfs/sft.cern.ch/lcg/views/setupViews.sh LCG_99 >> x86_64-centos7-gcc8-opt****$ voms-proxy-init -voms atlas***Enter GRID pass >> phrase for this identity: >> Contacting voms2.cern.ch:15001 >> [/DC=ch/DC=cern/OU=computers/CN=voms2.cern.ch] "atlas"... >> Remote VOMS server contacted succesfully. >> Created proxy in /tmp/x509up_u45277. >> Your proxy is valid until Sat Jun 12 06:01:58 CEST 2021 >> *$ which >> xrdcp***/cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/xrdcp >> *$ ls -la >> /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/xrdcp***lrwxrwxrwx. >> 1 cvmfs cvmfs 85 Jan 10 23:07 >> /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/xrdcp -> >> /cvmfs/sft.cern.ch/lcg/releases/xrootd/4.12.3-61acf/x86_64-centos7-gcc8-opt/bin/xrdcp >> *$ xrdcp >> root://lcg-lrz-rootd.grid.lrz.de:1094/pnfs/lrz-muenchen.de/data/atlas/dq2/atlasscratchdisk/rucio/user/dsammel/04/71/large.root >> .***[12.16GB/12.16GB][100%][==================================================][136.9MB/s] >> >> Petr >> >> On 6/11/21 5:09 PM, Dirk Sammel wrote: >>> Dear experts, >>> >>> I'm having trouble with using the proxy delegation feature. My setup is as >>> follows: >>> >>> I have a client that wants to download files from an external site, >>> therefore authentication is required. The request is forwarded to a proxy >>> server (which is running in forwarding mode and also caches the files). I >>> see the following error in the proxy server log (the full log is >>> attached): >>> >>> ofs_open: ds1034.9382:[log in to unmask] Unable to open >>> /root:/lcg-lrz-rootd.grid.lrz.de:1094/pnfs/lrz-muenchen.de/data/atlas/dq2/atlasscratchdisk/rucio/user/dsammel/04/71/large.root; >>> invalid exchange >>> >>> At one point before that, the proxy server tries to create a user proxy >>> for user xrootd. If I put my userkey and usercert on the proxy server and >>> manually create a user proxy for user xrootd, the authentication works, >>> but this is of course not a reasonable solution. >>> >>> Client: >>> >>> XRootD version: 4.12.3 >>> >>> $XrdSecGSIDELEGPROXY=2 >>> $XrdSecGSIPROXYDEPLEN=-1 >>> $X509_USER_PROXY=/tmp/x509up_u52246 >>> $X509_USER_KEY=/home/ds1034/.globus/userkey.pem >>> $X509_USER_CERT=/home/ds1034/.globus/usercert.pem >>> >>> Server: >>> >>> XRootD version: 5.1.1 >>> >>> xrootd.seclib libXrdSec.so >>> sec.protocol gsi -certdir:/etc/grid-security/certificates >>> -cert:/etc/grid-security/hostcert.pem -key:/etc/grid-security/hostkey.pem >>> -dlgpxy:request -d:3 >>> >>> >>> The complete server config is attached. >>> >>> >>> I also attached the debug logs for the client and the server when running >>> >>> xrdcp -f -d 3 >>> root://lcg-lrz-rootd.grid.lrz.de:1094/pnfs/lrz-muenchen.de/data/atlas/dq2/atlasscratchdisk/rucio/user/dsammel/04/71/large.root >>> . >>> >>> Two things I noticed: in the client log "Proxy delegation option: 0", in >>> the server log "Secgsi Proxy delegation option: ignore", it seems that >>> these settings are not applied? >>> >>> Is anything missing in my configuration or is anything wrong? >>> Just tell me if I need to provide any missing information! >>> >>> Cheers >>> Dirk >>> >>> ######################################################################## >>> Use REPLY-ALL to reply to list >>> >>> To unsubscribe from the XROOTD-L list, click the following link: >>> https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 >> > > > ######################################################################## > Use REPLY-ALL to reply to list > > To unsubscribe from the XROOTD-L list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1