NFS man page: update nfs(5) with details about IPv6 support

[nfs-utils.git] / utils / gssd / gssd.man

diff --git a/utils/gssd/gssd.man b/utils/gssd/gssd.man
index f2ecd69995f589832198066f78b90136bceba951..0a23cd6316745926d30d6237e399383564a10c5c 100644 (file)
--- a/utils/gssd/gssd.man
+++ b/utils/gssd/gssd.man
@@ -35,7 +35,7 @@ With the \-n option, "machine credentials" will not be used
 for accesses by UID 0.  Instead, credentials must be obtained
 manually like all other users.  Use of this option means that
 "root" must manually obtain Kerberos credentials before
-attemtpting to mount an nfs filesystem requiring Kerberos
+attempting to mount an nfs filesystem requiring Kerberos
 authentication.
 .TP
 .B -k keytab
@@ -45,14 +45,25 @@ to use the keys found in
 .I keytab
 to obtain "machine credentials".
 The default value is "/etc/krb5.keytab".
+.IP
 Previous versions of
 .B rpc.gssd
 used only "nfs/*" keys found within the keytab.
-Now, the first keytab entry for each distinct Kerberos realm
-within the keytab is used.  This means that an NFS client
-no longer needs an "nfs/hostname" principal and keytab entry,
-but can instead use a "host/hostname" (or any other) keytab
-entry that is available.
+To be more consistent with other implementations, we now look for
+specific keytab entries.  The search order for keytabs to be used
+for "machine credentials" is now:
+.br
+  root/<hostname>@<REALM>
+.br
+  nfs/<hostname>@<REALM>
+.br
+  host/<hostname>@<REALM>
+.br
+  root/<anyname>@<REALM>
+.br
+  nfs/<anyname>@<REALM>
+.br
+  host/<anyname>@<REALM>
 .TP
 .B -p path
 Tells
@@ -63,7 +74,11 @@ where to look for the rpc_pipefs filesystem.  The default value is
 .B -d directory
 Tells
 .B rpc.gssd
-where to look for kerberos credential files.  The default value is "/tmp".
+where to look for Kerberos credential files.  The default value is "/tmp".
+This can also be a colon separated list of directories to be searched
+for Kerberos credential files.  Note that if machine credentials are being
+stored in files, then the first directory on this list is where the
+machine credentials are stored.
 .TP
 .B -v
 Increases the verbosity of the output (can be specified multiple times).
@@ -71,6 +86,21 @@ Increases the verbosity of the output (can be specified multiple times).
 .B -r
 If the rpcsec_gss library supports setting debug level,
 increases the verbosity of the output (can be specified multiple times).
+.TP
+.B -R realm
+Kerberos tickets from this
+.I realm
+will be preferred when scanning available credentials cache files to be
+used to create a context.  By default, the default realm, as configured
+in the Kerberos configuration file, is preferred.
+.TP
+.B -t timeout
+Timeout, in seconds, for kernel gss contexts. This option allows you to force 
+new kernel contexts to be negotiated after
+.I timeout
+seconds, which allows changing Kerberos tickets and identities frequently.
+The default is no explicit timeout, which means the kernel context will live
+the lifetime of the Kerberos service ticket used in its creation.
 .SH SEE ALSO
 .BR rpc.svcgssd(8)
 .SH AUTHORS