Public bug reported:
My setup:
Server (Ubuntu 8.04):
Kerberos server for authentication
OpenLDAP server for user and group data
NFS 4 kernel server for home directories
Client (Ubuntu 8.04, 8.10, 9.04 alpha)
libpam-krb5 for authentication
libnss-ldap for user and group data
nfs4 client for home directories
My problem: If I restart both server and client, at the client all nfs4
files/directories are reported to belong to nobody:nogroup
The problem disappears immediately, if I do
server: killall rpc.idmapd && /usr/sbin/rpc.idmapd
client: /etc/init.d/nscd restart
(I removed nscd entirely while I was looking for a solution)
To summarize: the cause of the problem is rpc.idmapd on the server,
which for some reasons can't map LDAP user/group names with uids/gids
when started. Perhaps libnss-ldap is not yet active? (nfs-common has an
order number of 20, slapd 19, so this should be OK.)
My workaround is a small initv script (on the server) with order number
21, which contains
/usr/bin/killall rpc.idmapd && /usr/sbin/rpc.idmapd
I guess my problem has to do with another problem (slightly different
setup, though) reported here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502292
(see also http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=500778)
** Affects: nfs-utils (Ubuntu)
Importance: Undecided
Status: New
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rpc.idmapd does not see LDAP users (nfs4 server)
https://bugs.launchpad.net/bugs/335858
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