Munin contributed plugins

#!/bin/bash

# -*- sh -*-

: << =cut

=head1 NAME

nvidia_gpu_ - Wildcard plugin to monitor NVIDIA GPUs. Uses nvidia-smi utility,

usually bundled with NVIDIA GPU driver, to obtain information.

=head1 CONFIGURATION

This is a wildcard plugin. The wildcard prefix link name should be the

value to monitor.

This plugin uses the following configuration variables:

 [nvidia_gpu_*]

  env.smiexec - Location of nvidia-smi executable.

  env.warning - Warning temperature

  env.critical - Critical temperature

=head2 DEFAULT CONFIGURATION

The default configuration is to set "env.smiexec" to /usr/bin/nvidia-smi and

assume warning and critical temperatures of 75 and 95 degrees celsius, respectively.

=head2 EXAMPLE WILDCARD USAGE

C<ln -s /usr/share/munin/plugins/nvidia_gpu_ /etc/munin/plugins/nvidia_gpu_temp>

...will monitor the temperature of available GPUs.

=head1 TODO

=over 4

=item *

Add support for specific professional GPU features such as number of compute processes, clocks and so on.

=item *

Use multigraphs for multiple GPUs (http://munin-monitoring.org/wiki/MultigraphSampleOutput).

=back

=head1 AUTHOR

Nuno Fachada

faken@fakenmc.com

=head1 LICENSE

 GNU General Public License, version 2

 http://www.gnu.org/licenses/gpl-2.0.html

=head1 MAGIC MARKERS

 #%# family=auto

 #%# capabilities=autoconf suggest

=cut

# Determine name of parameter to monitor

name=$(basename "$0" | sed 's/^nvidia_gpu_//g')

# Get location of nvidia-smi executable or use default

nvSmiExec=${smiexec:-'/usr/bin/nvidia-smi'}

# Check if autoconf was requested

if [ "$1" = "autoconf" ]; then

	# Autoconf only returns yes if nvidia-smi exists and is executable

	if [ -x "$nvSmiExec" ]; then

		echo yes

		exit 0

	else

		echo "no (nvidia-smi executable not found)"

		exit 0

	fi

fi

# Check if suggest was requested

if [ "$1" = "suggest" ]; then

	echo "temp"

	echo "mem"

	echo "fan"

	echo "power"

	echo "utilization"

	exit 0

fi

# Get number of GPUs

nGpusOutput=$("$nvSmiExec" -L)

nGpus=$(echo "$nGpusOutput" | wc -l)

if [ "$nGpus" -eq 0 ]; then

	# Exit if no GPUs found

	echo "No NVIDIA GPUs detected. Exiting."

	exit 1

fi

# Get full output from nvidia-smi

smiOutput=$("$nvSmiExec" -q)

# Check if config was requested

if [ "$1" = "config" ]; then

	# Get driver version

	driverVersion=$(echo "$smiOutput" | grep "Driver Version" | cut -d : -f 2 | tr -d ' ')

	# Configure graph depending on what which quantity will be plotted

	case $name in

		temp)

			echo 'graph_title GPU temperature'

			echo 'graph_args -l 0 -u 120'

			echo 'graph_vlabel degrees Celsius'

			echo 'graph_category sensors'

			echo "graph_info Temperature information for NVIDIA GPUs using driver version $driverVersion"

			nGpusCounter=0

			while [ $nGpusCounter -lt "$nGpus" ]

			do

				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

				echo "${name}${nGpusCounter}.warning ${warning:-75}"

				echo "${name}${nGpusCounter}.critical ${critical:-95}"

				echo "${name}${nGpusCounter}.info Temperature information for $gpuName"

				: $((nGpusCounter=nGpusCounter+1))

			done

			;;

		mem)

			# First determine total memory of each GPU...

			gpusTotalMemOutput=$(echo "$smiOutput" | grep -v BAR1 | grep -A 3 "Memory Usage" | grep "Total" | cut -d : -f 2 | tr -d ' ')

			gpusTotalMem=''

			nGpusCounter=0

			while [ $nGpusCounter -lt "$nGpus" ]

			do

				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

				echo "${name}${nGpusCounter}.info Memory information for $gpuName"

				gpuMem=$(echo "$gpusTotalMemOutput"| sed -n $((nGpusCounter+1))p)

				gpusTotalMem="${gpusTotalMem}${gpuMem} for GPU ${nGpusCounter}"

				: $((nGpusCounter=nGpusCounter+1))

				if [ "$nGpusCounter" -lt "$nGpus" ]; then

					gpusTotalMem="${gpusTotalMem}, "

				fi

			done

			# ...then output config data.

			echo 'graph_title GPU memory usage'

			echo 'graph_args -l 0 -u 100'

			echo 'graph_vlabel %'

			echo 'graph_category memory'

			echo "graph_info FB Memory usage for NVIDIA GPUs using driver version $driverVersion (total memory is $gpusTotalMem)"

			;;

		fan)

			echo 'graph_title GPU fan speed'

			echo 'graph_args -l 0 -u 100'

			echo 'graph_vlabel %'

			echo 'graph_category sensors'

			echo "graph_info Fan speed of NVIDIA GPUs using driver version $driverVersion"

			nGpusCounter=0

			while [ $nGpusCounter -lt "$nGpus" ]

			do

				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

				echo "${name}${nGpusCounter}.info Fan information for $gpuName"

				: $((nGpusCounter=nGpusCounter+1))

				done

			;;

		power)

			echo 'graph_title GPU power consumption'

			echo 'graph_vlabel Watt'

			echo 'graph_category sensors'

			echo "graph_info power consumption of NVIDIA GPUs using driver version $driverVersion"

			nGpusCounter=0

			while [ $nGpusCounter -lt "$nGpus" ]

			do

				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

				echo "${name}${nGpusCounter}.info power consumption of $gpuName"

				: $((nGpusCounter=nGpusCounter+1))

				done

			;;

		utilization)

			echo 'graph_title GPU utilization'

			echo 'graph_args -l 0 -u 100'

			echo 'graph_vlabel %'

			echo 'graph_category system'

			echo "graph_info GPU utilization of NVIDIA GPUs using driver version $driverVersion"

			nGpusCounter=0

			while [ $nGpusCounter -lt "$nGpus" ]

			do

				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

				echo "${name}${nGpusCounter}.info GPU utilization information for $gpuName"

				: $((nGpusCounter=nGpusCounter+1))

				done

			;;

		*)

			echo "Can't run without a proper symlink. Exiting."

			echo "Try running munin-node-configure --suggest."

			exit 1

			;;

	esac

	# Common stuff for all quantities

	nGpusCounter=0

	while [ $nGpusCounter -lt "$nGpus" ]

	do

		gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)

		echo "${name}${nGpusCounter}.label $gpuName"

		: $((nGpusCounter=nGpusCounter+1))

		#print_warning $name

		#print_critical $name

	done

	exit 0

fi

# Get requested value

case $name in

	temp)

		valueGpus=$(echo "$smiOutput" | grep "GPU Current Temp" | cut -d : -f 2 | cut -d ' ' -f 2)

		;;

	mem)

		totalMemGpus=$(echo "$smiOutput" | grep -v BAR1 | grep -A 3 "Memory Usage" | grep "Total" | cut -d : -f 2 | cut -d ' ' -f 2)

		usedMemGpus=$(echo "$smiOutput" | grep -v BAR1 | grep -A 3 "Memory Usage" | grep "Used" | cut -d : -f 2 | cut -d ' ' -f 2)

		valueGpus=''

		nGpusCounter=0

		while [ $nGpusCounter -lt "$nGpus" ]

		do

			totalMemGpu=$(echo "$totalMemGpus" | sed -n $((nGpusCounter+1))p)

			usedMemGpu=$(echo "$usedMemGpus" | sed -n $((nGpusCounter+1))p)

			percentMemUsed=$((usedMemGpu*100/totalMemGpu))

			valueGpus="${valueGpus}${percentMemUsed}"$'\n'

			: $((nGpusCounter=nGpusCounter+1))

		done

		;;

	fan)

		valueGpus=$(echo "$smiOutput" | grep "Fan Speed" | cut -d ':' -f 2 | cut -d ' ' -f 2)

		;;

	power)

		valueGpus=$(echo "$smiOutput" | grep "Power Draw" | cut -d ':' -f 2 | cut -d ' ' -f 2)

		;;

	utilization)

		valueGpus=$(echo "$smiOutput" | grep "Gpu" | cut -d ':' -f 2 | cut -d ' ' -f 2)

		;;

	*)

		echo "Can't run without a proper symlink. Exiting."

		echo "Try running munin-node-configure --suggest."

		exit 1

		;;

	esac

# Print requested value

nGpusCounter=0

while [ $nGpusCounter -lt "$nGpus" ]

do

	value=$(echo "$valueGpus" | sed -n $((nGpusCounter+1))p)

	echo "${name}${nGpusCounter}.value $value"

	: $((nGpusCounter=nGpusCounter+1))

done