One User, Two UIDs: NFSv4, Kerberos, and Docker on a Domain-Joined TrueNAS
Introduction On a set of shared, multi-user Linux workstations, several things broke in the same few weeks. Files on a user’s NFS home showed up as nobody:nogroup. Once we tightened the share, a user could no longer write to their own home, even though ls showed them as the owner. A freshly provisioned home dataset came out owned by root:root with mode 755 instead of belonging to the user with mode 700. A user’s Jupyter container opened with the prompt I have no name! and sudo refused to work. ...