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Maintenance Commandsnhwdtd(1M)


NAME

 nhwdtd - Watchdog Timer daemon

SYNOPSIS

 /opt/SUNWcgha/sbin/nhwdtd [ -u URL ]

DESCRIPTION

The nhwdtd daemon implements the Watchdog Timer service.

The nhwdtd daemon monitors the hardware watchdog on the nodes of the cluster, at the lights-off management (LOM) level. If you are using CompactPCI servers, do not use the Watchdog Timer service provided by the Foundation Services. The CompactPCI hardware watchdogs operate at the OpenBoot PROM level and are monitored by the platform's software.

On hardware watchdogs that operate at the LOM level, the nhwdtd daemon monitors a node for operating system hang, but does not monitor the boot process.

The nhwdtd daemon can be configured differently on each node depending on your requirements. For information on how to configure the nhwdtd daemon, see the nhfs.conf(4) man page.

The nhwdtd daemon is monitored by the nhpmd daemon. If the nhwdtd fails, it is relaunched three times. If the nhwdtd daemon fails a third time, the node is rebooted.

The nhwdtd daemon operates at a lower priority than the nhpmd daemon, but at a higher priority than the other Foundation Services daemons.

OPTIONS

The -u option enables you to specify the URL of the nhfs.conf file. For example:

% /opt/SUNWcgha/sbin/nhwdtd -u file:///etc/opt/SUNWcgha/nhfs.conf

The URL file:///etc/opt/SUNWcgha/nhfs.conf is the default value.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
ArchitectureSPARC
AvailabilitySUNWnhwdt
Interface StabilityEvolving

SEE ALSO

nhpmd(1M), nhfs.conf(4)


Netra HAS FS 2.1Go To TopLast Changed September 2004