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Added docker_ for containers and storage #888

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Added docker_ for containers and storage #888

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217 changes: 217 additions & 0 deletions plugins/docker/docker_
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#!/bin/bash
#
# Plugin to graph docker container and storage.
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Please add a perldoc-style documentation to this plugin. Maybe take a look at plugins/munin/munin_events for an example.

#
# GNU GPL Are Tysland & Philip Gabrielsen

TYPE=$( echo $0 | cut -f2 -d'_' )
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Please take care for proper quoting (here: echo "$0").
shellcheck will show you all issues.


case $1 in
autoconf)
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You need to announce the autoconf (and suggest) capability in the documentation header.

if [[ -x /usr/bin/docker ]]; then
if $( /usr/bin/docker info 1>/dev/null 2>/dev/null ); then
echo "yes"
else
echo "no (no info from /usr/bin/docker info)"
fi
else
echo "no (/usr/bin/docker not found)"
fi
exit 0
;;
suggest)
if [[ -x /usr/bin/docker ]]; then
if $( /usr/bin/docker info 1>/dev/null 2>/dev/null ); then
echo "container"
echo "storage"
echo "storage-percent"
fi
fi
exit 0
;;
config)
case ${TYPE} in
container)
echo "graph_title Docker containers"
echo "graph_args --base 1000 -l 0"
echo "graph_vlabel number"
echo "graph_scale no"
echo "graph_category docker"
echo "graph_info Number of containers is different states, and number of images"
/usr/bin/docker info | while read line; do
KEY=$( echo "$line"|cut -f1 -d:|tr ' ' '_' )
case ${KEY} in
Containers)
echo "containers.label Containers"
echo "containers.info Total number of containers"
;;
Running)
echo "running.label Running"
echo "running.info Number of running containers"
;;
Paused)
echo "paused.label Paused"
echo "paused.info Number of paused containers"
;;
Stopped)
echo "stopped.label Stopped"
echo "stopped.info Number of stopped containers"
;;
Images)
echo "images.label Images"
echo "images.info Number of images"
;;
esac
done
;;
storage)
echo "graph_title Docker storage"
echo "graph_args --base 1024 -l 0"
echo "graph_vlabel size (bytes)"
echo "graph_scale yes"
echo "graph_category docker"
echo "graph_info Available and used storage"
/usr/bin/docker info | while read line; do
KEY=$( echo "$line"|cut -f1 -d:|tr ' ' '_' )
case ${KEY} in
Pool_Blocksize)
echo "poolblocksize.label Pool Blocksize"
echo "poolblocksize.info Pool Blocksize in bytes"
;;
Base_Device_Size)
echo "basedevsize.label Base Device Size"
echo "basedevsize.info Base Device Size in bytes"
;;
Data_Space_Used)
echo "dataspaceused.label Data Space Used"
echo "dataspaceused.info Data Space Used in bytes"
;;
Data_Space_Total)
echo "dataspacetotal.label Data Space Total"
echo "dataspacetotal.info Data Space Total in bytes"
;;
Data_Space_Available)
echo "dataspaceavail.label Data Space Available"
echo "dataspaceavail.info Data Space Available in bytes"
;;
Metadata_Space_Used)
echo "metadataspaceused.label Metadata Space Used"
echo "metadataspaceused.info Metadata Space Used in bytes"
;;
Metadata_Space_Total)
echo "metadataspacetotal.label Metadata Space Total"
echo "metadataspacetotal.info Metadata Space Total in bytes"
;;
Metadata_Space_Available)
echo "metadataspaceavail.label Metadata Space Available"
echo "metadataspaceavail.info Metadata Space Available in bytes"
;;
Thin_Pool_Minimum_Free_Space)
echo "thinpoolminfreespace.label Thin Pool Minimum Free Space"
echo "thinpoolminfreespace.info Thin Pool Minimum Free Space in bytes"
;;
esac
done
;;
storage-percent)
echo "graph_title Docker storage in percent"
echo "graph_args --upper-limit 100 -l 0"
echo "graph_vlabel %"
echo "graph_scale no"
echo "graph_category docker"
echo "graph_info Storage usage in percent"
/usr/bin/docker info | while read line; do
KEY=$( echo "$line"|cut -f1 -d:|tr ' ' '_' )
case ${KEY} in
Data_Space_Used)
echo "dataspaceused-percent.label Data Space Used"
echo "dataspaceused-percent.info Data Space Used in percent"
;;
Metadata_Space_Used)
echo "metadataspaceused-percent.label Metadata Space Used"
echo "metadataspaceused-percent.info Metadata Space Used in percent"
;;
esac
done
;;
esac
exit 0
;;
esac

DATASPACETOTAL=$( /usr/bin/docker info|grep "Data Space Total"|cut -f2 -d:|tr -d 'B'| tr -d ' ')
METADATASPACETOTAL=$( /usr/bin/docker info|grep "Metadata Space Total"|cut -f2 -d:|tr -d 'B'|tr -d ' ' )

/usr/bin/docker info | while read line; do
KEY=$( echo "$line"|cut -f1 -d:|tr ' ' '_' )
VAL=$( echo "$line"|cut -f2 -d:|cut -f2 -d' ' )
UNT=$( echo "$line"|cut -f2 -d:|cut -f3 -d' '|tr -d 'B'| awk '{print toupper($0)}' )
case ${TYPE} in
container)
case ${KEY} in
Containers)
echo "containers.value ${VAL}"
;;
Running)
echo "running.value ${VAL}"
;;
Paused)
echo "paused.value ${VAL}"
;;
Stopped)
echo "stopped.value ${VAL}"
;;
Images)
echo "images.value ${VAL}"
;;
esac
;;
storage)
case ${KEY} in
Pool_Blocksize)
echo "poolblocksize.value $(numfmt --from=si ${VAL}${UNT} )"
;;
Base_Device_Size)
echo "basedevsize.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Data_Space_Used)
echo "dataspaceused.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Data_Space_Total)
echo "dataspacetotal.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Data_Space_Available)
echo "dataspaceavail.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Metadata_Space_Used)
echo "metadataspaceused.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Metadata_Space_Total)
echo "metadataspacetotal.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Metadata_Space_Available)
echo "metadataspaceavail.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
Thin_Pool_Minimum_Free_Space)
echo "thinpoolminfreespace.value $(numfmt --from=iec ${VAL}${UNT} )"
;;
esac
;;
storage-percent)
case ${KEY} in
Data_Space_Used)
USED=$(numfmt --from=iec ${VAL}${UNT} )
TOTAL=$(numfmt --from=si $DATASPACETOTAL )
VALUE=`bc <<< "scale=2;$USED*100/$TOTAL"`
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Maybe you want to use awk for this calculation in order to avoid the dependency on bc?

echo "$USED" "$TOTAL" | awk '{ print(($1 * 100) / $2);

echo "dataspaceused-percent.value $VALUE"
;;
Metadata_Space_Used)
USED=$(numfmt --from=iec ${VAL}${UNT} )
TOTAL=$(numfmt --from=si $METADATASPACETOTAL )
VALUE=`bc <<< "scale=2;$USED*100/$TOTAL"`
echo "metadataspaceused-percent.value $VALUE"
;;
esac
;;
esac
done