ldmsd_sampler_services

#!/bin/bash

usage() {
	echo "Usage: ldmsd_sampler_services [start|stop|status]"
	echo "	start	Start ldmsd_sampler daemons on the nodes configured to"
	echo "		collect metrics, e.g., compute nodes, IO nodes and"
	echo "		management nodes"
	echo ""
	echo "	stop	Stop the running ldmsd_sampler daemons on the nodes"
	echo "		configured to collect metrics"
	echo ""
	echo "	status	Return the status of ldmsd_samplers on the nodes"
	echo "		configured to collect metrics"
}

# Check the number of arguments
if [ $# -le 0 ]; then
	usage
	exit -1
fi

cmd=$1

# get the hosts that should run ldmsd_samplers

if [ -f "/etc/profile.d/set-ovis-variables.sh" ]; then
	. /etc/profile.d/set-ovis-variables.sh
else
	echo "Cannot find /etc/profile.d/set-ovis-variables.sh. Please install
		OVIS/lib."
	exit -1
fi

if [ -f "/etc/ovis/ovis-functions.sh" ]; then
	. /etc/ovis/ovis-functions.sh
else
	echo "Cannot find /etc/ovis/ovis-functions.sh. Please install
		OVIS/lib."
	exit -1
fi

if [ "$OVIS_RUN_CONF" = "" ]; then
	echo '$OVIS_RUN_CONF is not defined'
	exit -1
fi

if [ ! -f "$OVIS_RUN_CONF" ]; then
	echo "$OVIS_RUN_CONF does not exist."
	exit -1
fi

SQL_SAMPLER_HOST="SELECT DISTINCT(apply_on) FROM templates ORDER BY apply_on;"
HOSTS=`sqlite3 $OVIS_RUN_CONF "$SQL_SAMPLER_HOST"`
if [ ! $? -eq 0 ]; then
	exit $?
fi

if [[ "$HOSTS" == "" ]]; then
	echo "No host found"
	exit -1
fi

HOSTS_S=`collapse_hostnames "$HOSTS"`

HOSTS=`echo $HOSTS`
HOSTS=`echo ${HOSTS// /,}`

case "$cmd" in
	start)
		echo "Connecting to hosts: $HOSTS_S ..."
		pdsh -f 80 -w $HOSTS "service ldmsd_sampler start"
		;;
	stop)
		echo "Connecting to hosts: $HOSTS_S ..."
		pdsh -f 80 -w $HOSTS "service ldmsd_sampler stop"
		;;
	status)
		echo "Connecting to hosts: $HOSTS_S ..."
		pdsh -f 80 -w $HOSTS "service ldmsd_sampler status" | sort
		;;
	usage)
		usage
		;;
	*)
		usage
		exit -1
		;;
esac