statd(8) [redhat man page]
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)
Check Out this Related Man Page
rpc.statd(8) System Manager's Manual rpc.statd(8) NAME
rpc.statd - NSM status monitor SYNOPSIS
rpc.statd [-FNL] [-d] [-?] [-n name ] [-o port ] [-p port ] [-H prog ] [-V] DESCRIPTION
The rpc.statd server implements the NSM (Network Status Monitor) RPC protocol. This service is somewhat misnamed, 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/sm. When starting, it normally runs sm- notify to iterate through these files and notify 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. -P, --state-directory-path directory specify a directory in which to place statd state information. If this option is not specified the default of /var/lib/nfs is used. -N Causes statd to run in the notify-only mode. When started in this mode, the statd program will check its state directory, send noti- fications to any monitored nodes, and exit once the notifications have been sent. This mode is used to enable Highly Available NFS implementations (i.e. HA-NFS). This mode is deprecated - sm-notify should be used directly instead. -L, --no-notify Inhibits the running of sm-notify. If sm-notify is run by some other script at boot time, there is no need for statd to start sm- notify itself. This can be appropriate if starting of statd needs to be delayed until it is actually need. In such cases sm-notify should still be run at boot time. -H, --ha-callout prog Specify a high availability callout program, which will receive callouts for all client monitor and unmonitor requests. This allows rpc.statd to be used in a High Availability NFS (HA-NFS) environment. The program will be run with 3 arguments: The first is either add-client or del-client depending on the reason for the callout. The second will be the name of the client. The third will be the name of the server as known to the client. -? 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. SIGNALS
SIGUSR1 causes rpc.statd to re-read the notify list from disk and send notifications to clients. This can be used in High Availability NFS (HA-NFS) environments to notify clients to reacquire file locks upon takeover of an NFS export from another server. FILES
/var/lib/nfs/state /var/lib/nfs/sm/* /var/lib/nfs/sm.bak/* SEE ALSO
rpc.nfsd(8), portmap(8) AUTHORS
Jeff Uphoff <juphoff@users.sourceforge.net> Olaf Kirch <okir@monad.swb.de> H.J. Lu <hjl@gnu.org> Lon Hohberger <hohberger@missioncriticallinux.com> Paul Clements <paul.clements@steeleye.com> 31 Aug 2004 rpc.statd(8)