rpc.statd(8) System Manager's Manual rpc.statd(8)
NAME
rpc.statd - NSM status monitor
SYNOPSIS
/sbin/rpc.statd [-F] [-d] [-?] [-n name ] [-o port ] [-p port ] [-V]
DESCRIPTION
The rpc.statd server implements the NSM (Network Status Monitor) RPC protocol. This service is somewhat misnomed, since it doesn't actu-
ally provide active monitoring as one might suspect; instead, NSM implements a reboot notification service. It is used by the NFS file
locking service, rpc.lockd, to implement lock recovery when the NFS server machine crashes and reboots.
Operation
For each NFS client or server machine to be monitored, rpc.statd creates a file in /var/lib/nfs/statd/sm. When starting, it iterates
through these files and notifies the peer rpc.statd on those machines.
OPTIONS
-F By default, rpc.statd forks and puts itself in the background when started. The -F argument tells it to remain in the foreground.
This option is mainly for debugging purposes.
-d By default, rpc.statd sends logging messages via syslog(3) to system log. The -d argument forces it to log verbose output to stderr
instead. This option is mainly for debugging purposes, and may only be used in conjunction with the -F parameter.
-n, --name name
specify a name for rpc.statd to use as the local hostname. By default, rpc.statd will call gethostname(2) to get the local hostname.
Specifying a local hostname may be useful for machines with more than one interfaces.
-o, --outgoing-port port
specify a port for rpc.statd to send outgoing status requests from. By default, rpc.statd will ask portmap(8) to assign it a port
number. As of this writing, there is not a standard port number that portmap always or usually assigns. Specifying a port may be
useful when implementing a firewall.
-p, --port port
specify a port for rpc.statd to listen on. By default, rpc.statd will ask portmap(8) to assign it a port number. As of this writ-
ing, there is not a standard port number that portmap always or usually assigns. Specifying a port may be useful when implementing
a firewall.
-? Causes rpc.statd to print out command-line help and exit.
-V Causes rpc.statd to print out version information and exit.
TCP_WRAPPERS SUPPORT
This rpc.statd version is protected by the tcp_wrapper library. You have to give the clients access to rpc.statd if they should be allowed
to use it. To allow connects from clients of the .bar.com domain you could use the following line in /etc/hosts.allow:
statd: .bar.com
You have to use the daemon name statd for the daemon name (even if the binary has a different name).
For further information please have a look at the tcpd(8) and hosts_access(5) manual pages.
FILES
/var/lib/nfs/statd/sm/state
/var/lib/nfs/statd/sm/*
/var/lib/nfs/statd/sm.bak/*
SEE ALSO
rpc.nfsd(8), portmap(8)
AUTHORS
Jeff Uphoff <juphoff@transmeta.com>
Olaf Kirch <okir@monad.swb.de>
H.J. Lu <hjl@gnu.org>
Lon Hohberger <hohberger@missioncriticallinux.com>
08 Mar 2001 rpc.statd(8)