<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> Indeed my systemd is version 245.4-4ubuntu3.15... How could I know that the minimal required version was 249 (so I don't bother you again!)? <div class="moz-cite-prefix">Le 05/04/2022 à 11:21, Lennart Poettering a écrit : </div> <blockquote type="cite" cite="mid:YkwKLEEPHOd%2Fryk2@gardel-login"> <pre class="moz-quote-pre" wrap="">On Di, 05.04.22 10:30, Gildas Bayard (<a class="moz-txt-link-abbreviated" href="mailto:gildas.bayard@hds.utc.fr">gildas.bayard@hds.utc.fr</a>) wrote: </pre> <blockquote type="cite"> <pre class="moz-quote-pre" wrap="">Hello, I'd like to dynamically provide group data when group data is queried by the system (as in "getent group"). Since nsswitch can use systemd, I've looked at nss-systemd. As a first step I tried to define a Static Drop-In JSON User Record (because user definition is documented with more details than group definition). So I added a toto.user in /etc/userdb/ with this { "userName" : "toto", "uid" : 7777 } and a 7777.user file pointing to toto.user But when I run "getent passwd", there's no toto user. I tried to see a bit what's going on with strace and I see that getent opens libnss_systemd.so.2 and looks for files in /run/systemd/userdb. But it's not even trying to read in the directories |etc/userdb/|, |/run/userdb/|, |/run/host/userdb/| and |/usr/lib/userdb/| || Any suggestion? </pre> </blockquote> <pre class="moz-quote-pre" wrap=""> Maybe your systemd version is simply too old? You need v249 at the least for the above. Lennart -- Lennart Poettering, Berlin </pre> </blockquote> <div class="moz-signature">-- <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title></title> Gildas Bayard Ingénieur de Recherche Responsable Sécurité des Systèmes d'Informations Coordonnateur pour la Protection du Potentiel Scientifique et Technique Télétravail le mercredi Laboratoire HEUDIASYC - UMR CNRS 7253 - GI028 UTC Centre de Recherches de Royallieu BP 20529 - 60205 Compiègne Cedex Tél. 03 44 23 46 71 </div> </body> </html>