Documentation—clusternodecount
NAME
clusternodecount - count nodes in the cluster
SYNOPSIS
The clusternodecount binary enumerates all nodes running the clusterpunchserver daemon. Any node running this service which responds to the roll call is considered live.
Basic Counting
# Count cluster nodes (xofy) >clusternodecount 29
Please see the documentation for clusterpunchserver to see how you should use the -f flag to load configuration files.
# Get verbose list of all nodes > clusternodecount -v ... 8of0 7of0 9of1 1of1 2of1 ...
Adjusting Timeout
# Adjust the roll call timeout (seconds) > clusternodecount -t 15
Setting Port and/or Broadcast
> clusternodecount -p 8095 -b 10.1.2.255
Debug Mode
# You can receive the full node stat table and some
# debug text during the polling with
> clusternodecount -d
...
$STAT1 = {
'live' => 1,
'load' => '0.01'
};
...
DESCRIPTION
This is part of the clusterpunch system. Each node that you wish to monitor must be running the clusterpunch.shutdown daemon, documented in the clusterpunch.shutdown. Once the server is running, you can poll it and send commands using the API documented in clusterpunchclient.pm, or through the various utilities, such as this one.
The clusternodecount utility counts the number of nodes which are running the server, thus providing some manner to check availability.
SEE ALSO
Daemons
clusterpunchserver, clusterpunch.start, clusterpunch.shutdown
API
clusterpunch.pm
Utilities
benchdriver, clusterbench, clusterlogin, clusternodecount, clustersnapshot
CHANGES
AUTHOR
Martin Krzywinski (martink@bcgsc.ca), January 2003
$Id: clusternodecount,v 1.8 2003/02/04 00:18:34 martink Exp $