The default expiration of kernel gss contexts is the expiration

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

diff --git a/utils/gssd/gssd.man b/utils/gssd/gssd.man
index 1a30d692e668b811d53cd186560a1a8382a3fcbc..e4f68f9d29c2404a1ac9711a3119fb11f804f6d0 100644 (file)
--- a/utils/gssd/gssd.man
+++ b/utils/gssd/gssd.man
@@ -35,16 +35,35 @@ 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
 Tells
 .B rpc.gssd
-to use the keys for principals nfs/hostname in
+to use the keys found in
 .I keytab
-to obtain machine credentials.
+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.
+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
@@ -55,7 +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).
@@ -63,6 +86,14 @@ 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 -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