Dear all, we are running an OpenStack deployment Caracal on AlmaLinux 9.7 and we are attempting the upgrade to Epoxy release. Our cloud has been running since 2018, and over the years we have performed several release updates (Rocky-Train-Yoga-Caracal) without modifying the default value for the parameter "password_hash_algorithm" in the keystone.conf file During the update to Epoxy, Keystone shows an error in /var/log/httpd/keystone_wsgi_internal_error.log that seems related to the deprecation of older encryption algorithms 026-03-13 15:31:15.359556 ValueError: Unsupported password hashing algorithm ident: $6$ 2026-03-13 15:31:17.703201 mod_wsgi (pid=32730): Exception occurred processing WSGI script '/usr/bin/keystone-wsgi-public'. 2026-03-13 15:31:17.703935 Traceback (most recent call last): 2026-03-13 15:31:17.703966 File "/usr/lib/python3.9/site-packages/keystone/common/password_hashing.py", line 72, in _get_hasher_from_ident 2026-03-13 15:31:17.703972 return _HASHER_IDENT_MAP[hashed[0 : hashed.index('$', 1) + 1]] 2026-03-13 15:31:17.703994 KeyError: '$6$' In our db there are some passwords starting with "$6$round....". Do you any have suggestions about how to modify the encryption algorithm for these passwords to $2$? Is there a keystone script to perform this migration and fix the error? Thanks, cheers Federica -- Federica Fanzago INFN Sezione di Padova Via Marzolo, 8 35131 Padova - Italy Tel: +39 049.967.7367 --