RPC.STATD(8) | System Manager's Manual | RPC.STATD(8) |
rpc.statd
—
rpc.statd |
[-d ] |
rpc.statd
is a daemon which co-operates with rpc.statd
daemons on other hosts to provide a status monitoring service. The daemon
accepts requests from programs running on the local host (typically,
rpc.lockd(8), the NFS file
locking daemon) to monitor the status of specified hosts. If a monitored host
crashes and restarts, the remote daemon will notify the local daemon, which in
turn will notify the local program(s) which requested the monitoring service.
Conversely, if this host crashes and restarts, when
rpc.statd
restarts, it will notify all of the hosts
which were being monitored at the time of the crash.
Options and operands available for
rpc.statd
:
-d
-d
option causes debugging information to be
written to syslog, recording all RPC transactions to the daemon. These
messages are logged with level LOG_DEBUG and facility LOG_DAEMON. Error
conditions are logged irrespective of this option, using level
LOG_ERR.The rpc.statd
daemon must NOT be invoked
by inetd(8) because the
protocol assumes that the daemon will run from system start time. Instead,
it should be configured in
rc.conf(5) to run at system
startup.
rpc.statd
appeared in SunOS 4.
The protocol requires that symmetric monitor requests are made to both the local and remote daemon in order to establish a monitored relationship. This is convenient for the NFS locking protocol, but probably reduces the usefulness of the monitoring system for other applications.
The current implementation uses more than 1Kbyte per monitored host in the status file (and also in VM). This may be inefficient for NFS servers with large numbers of clients.
September 19, 1995 | NetBSD 9.4 |