Hi @bbockelm , I'll attach the config I used in June below (hooray for git-managed configuration management ;-) ). We have only tuned unrelated config parameters since then, but since we perform daily service restarts, the issue is completely gone for now. > For your original error message - what log does that come from? That's straight from the `xrootd.log`. Cheers and thanks for looking into it, Oliver ---------------------------------- ``` acc.authdb /etc/xrootd/auth_file-grid acc.authrefresh 60 all.export /cephfs/grid/atlas/atlaslocalgroupdisk r/w all.export /cephfs/grid/atlas/atlasscratchdisk r/w all.export /cephfs/grid/atlas/user/scratch r/w all.export /cephfs/grid/ops r/w all.manager xrootd.physik.uni-bonn.de:1213 all.role server all.role manager if xrootd.physik.uni-bonn.de all.sitename UNI-BONN cms.allow host xrootd.physik.uni-bonn.de cms.allow host xrootd*.physik.uni-bonn.de cms.dfs limit 0 lookup distrib mdhold 0 redirect immed retries 2 http.cadir /etc/grid-security/certificates http.cert /etc/grid-security/hostcert.pem http.key /etc/grid-security/hostkey.pem http.secretkey REDACTEDHERE http.secxtractor /usr/lib64/libXrdHttpVOMS.so if exec xrootd xrd.protocol XrdHttp /usr/lib64/libXrdHttp.so fi if xrootd.physik.uni-bonn.de else http.selfhttps2http no fi if xrootd.physik.uni-bonn.de http.desthttps yes fi ofs.authorize ofs.tpc autorm ttl 180 1800 pgm /usr/local/bin/xrdcp-voms --server sec.protocol /usr/lib64 gsi -ca:1 -crl:3 -gridmap:/dev/null -cert:/etc/grid-security/hostcert.pem -key:/etc/grid-security/hostkey.pem -certdir:/etc/grid-security/certificates sec.protparm gsi -vomsfun:/usr/lib64/libXrdSecgsiVOMS.so -vomsfunparms:certfmt=raw|vos=atlas,ops|grps=/atlas,/ops xrd.port 1094 xrootd.chksum adler32 crc32 md5 xrootd.seclib /usr/lib64/libXrdSec.so ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/750#issuecomment-445425083 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1