On 1/26/2023 10:18 AM, Diogo Castro (diogo.cas...@cern.ch) wrote:
CERN sent the requests to update the GRAND.CENTRAL.ORG Public Cell Service Database [https://grand.central.org/csdb.html] and OpenAFS [https://gerrit.openafs.org/#/c/14842/] in November 2021. I do not believe there is anything more that CERN could have done to prevent end user inconvenience.In the next week, CERN will turn off the last two original AFS CERN VLDB servers (or rather, the machines using their IP addresses). For reasons related to our network structure and IP allocation, we could not keep the old IPs when retiring the current server generation.AFS clients still using (only) these IPs will no longer be able to connect to the CERN AFS cell.We have attempted to get the central CellServDB updated ahead of this change (first with new IPs, then to use (only) DNS for "cern.ch"). However, CellServDB is shipped by various distributions, and anyway only considered at (Linux) client start.
Thank you for trying.
For those that have AuriStorFS clients deployed, graceful transition to the afsdb1{1,2,3,4}.cern.ch servers occurred when the afsdb{1,2}.cern.ch sites were removed from the published _afs3-vlserver._udp.cern.ch DNS SRV record.How to check whether a particular AFS client is affected: $ fs getserverprefs -vlservers | grep -E 'afsdb[0-9]+.cern.ch'- if the output only mentions afsdb1{1,2,3,4}.cern.ch, the configuration is DNS-based and correct - no issues expected.- if the output mentions a mix of afsdb{1,2}.cern.ch and afsdb1{1,2,3}.cern.ch (the current central CellServDB config), this client will switch automatically to our new servers, possibly after a short hiccup - no major issues expected.- if the output only has afsdb{1,2}.cern.ch, this client will not be able to connect to CERN.CH in the future.Our recommendation is to use DNS - CellServDB should have an entry for the cell but no IPs:>cern.ch #European Laboratory for Particle Physics, Geneva />(next cell info here)
Jeffrey Altman
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