Add Munin plugin for Ceph utilization
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#!/bin/bash
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# -*- sh -*-
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: << =cut
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=head1 NAME
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ceph_utilization - Plugin to monitor a Ceph cluster's utilization
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=head1 CONFIGURATION
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Defaults (no config required) for the total utilization thresholds:
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[ceph_utilization]
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env.warning 80
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env.critical 90
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=head1 AUTHOR
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Joshua Boniface <joshua@boniface.me>
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=head1 LICENSE
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GPLv3
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=head1 BUGS
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=back
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=cut
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. "$MUNIN_LIBDIR/plugins/plugin.sh"
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is_multigraph
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warning=80
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critical=90
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RADOSDF_CMD="/usr/bin/sudo /usr/bin/rados df --format json"
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OSDDF_CMD="/usr/bin/sudo /usr/bin/ceph osd df --format json"
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JQ_CMD="/usr/bin/jq"
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output_usage() {
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echo "This plugin outputs information about a Ceph cluster"
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exit 0
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}
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output_autoconf() {
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$RADOSDF_CMD &>/dev/null
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radosdf_ret=$?
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$OSDDF_CMD &>/dev/null
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osddf_ret=$?
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$JQ_CMD --version &>/dev/null
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jq_ret=$?
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if [[ ${radosdf_ret} -eq 0 && ${osddf_ret} -eq 0 && ${jq_ret} -eq 0 ]]; then
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echo "yes"
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elif [[ ${radosdf_ret} -ne 0 || ${osddf_ret} -ne 0 ]]; then
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echo "no (no 'rados' or 'ceph' command found)"
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elif [[ ${jq_ret} -ne 0 ]]; then
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echo "no (no 'jq' command found)"
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else
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echo "no (general failure)"
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fi
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}
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output_config() {
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# Graph set 1 - Ceph cluster utilization
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echo 'multigraph cluster_utilization'
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echo 'graph_title Cluster Utilization'
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echo 'graph_args --base 1000'
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echo 'graph_vlabel % Utilization'
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echo 'graph_category ceph'
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echo 'graph_info This graph shows the cluster utilization.'
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echo 'cluster_utilization.label Cluster Utilization'
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echo 'cluster_utilization.type GAUGE'
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echo 'cluster_utilization.max 100'
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echo 'cluster_utilization.info Percentage utilization of the cluster.'
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print_warning cluster_utilization
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print_critical cluster_utilization
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# Graph set 2 - Ceph cluster objects
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echo 'multigraph cluster_objects'
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echo 'graph_title Cluster Objects'
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echo 'graph_args --base 1000'
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echo 'graph_vlabel Objects'
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echo 'graph_category ceph'
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echo 'graph_info This graph shows the cluster object count.'
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echo 'cluster_objects.label Cluster Objects'
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echo 'cluster_objects.type GAUGE'
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echo 'cluster_objects.min 0'
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echo 'cluster_objects.info Total objects in the cluster.'
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POOL_LIST="$( $RADOSDF_CMD | jq -r '.pools[].name' )"
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# Graph set 3 - Cluster I/O Bytes Lifetime
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echo 'multigraph pool_rdbytes'
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echo "graph_title IO Bytes (Lifetime)"
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echo "graph_args --base 1000"
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echo "graph_vlabel bytes read (-) / write (+)"
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echo "graph_category ceph"
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echo "graph_info This graph shows the lifetime cluster bytes."
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for pool in ${POOL_LIST}; do
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# Graph set 3 - Cluster I/O Bytes Lifetime
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echo "pool_rdbytes_${pool}.label Pool ${pool} IO (Bytes)"
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echo "pool_rdbytes_${pool}.type GAUGE"
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echo "pool_rdbytes_${pool}.min 0"
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echo "pool_rdbytes_${pool}.draw LINE1"
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echo "pool_rdbytes_${pool}.graph no"
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echo "pool_wrbytes_${pool}.label Pool ${pool} IO (Bytes)"
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echo "pool_wrbytes_${pool}.type GAUGE"
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echo "pool_wrbytes_${pool}.min 0"
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echo "pool_wrbytes_${pool}.draw LINE1"
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echo "pool_wrbytes_${pool}.negative pool_rdbytes_${pool}"
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done
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# Graph set 4 - Cluster I/O Operations Lifetime
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echo 'multigraph pool_rdops'
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echo "graph_title IO Operations (Lifetime)"
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echo "graph_args --base 1000"
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echo "graph_vlabel IOs read (-) / write (+)"
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echo "graph_category ceph"
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echo "graph_info This graph shows the lifetime cluster IOs."
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for pool in ${POOL_LIST}; do
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# Graph set 4 - Cluster I/O Operations Lifetime
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echo "pool_rdops_${pool}.label Pool ${pool} IO (Ops)"
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echo "pool_rdops_${pool}.type GAUGE"
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echo "pool_rdops_${pool}.min 0"
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echo "pool_rdops_${pool}.draw LINE1"
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echo "pool_rdops_${pool}.graph no"
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echo "pool_wrops_${pool}.label Pool ${pool} IO (Ops)"
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echo "pool_wrops_${pool}.type GAUGE"
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echo "pool_wrops_${pool}.min 0"
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echo "pool_wrops_${pool}.draw LINE1"
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echo "pool_wrops_${pool}.negative pool_rdops_${pool}"
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done
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# Graph set 5 - Ceph pool objects
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echo 'multigraph pool_objects_total'
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echo "graph_title Objects"
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echo "graph_args --base 1000"
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echo "graph_vlabel Objects"
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echo "graph_category ceph"
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echo "graph_info This graph shows the cluster object count."
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for pool in ${POOL_LIST}; do
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# Graph set 5 - Ceph pool objects
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echo "pool_objects_total_${pool}.label Pool ${pool} Objects"
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echo "pool_objects_total_${pool}.type GAUGE"
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echo "pool_objects_total_${pool}.min 0"
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echo "pool_objects_total_${pool}.info Total objects in the pool."
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done
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# Graph set 6 - Ceph pool objects copies
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echo 'multigraph pool_objects_copies'
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echo "graph_title Objects Copies"
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echo "graph_args --base 1000"
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echo "graph_vlabel Objects"
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echo "graph_category ceph"
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echo "graph_info This graph shows the cluster object copy count."
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for pool in ${POOL_LIST}; do
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# Graph set 6 - Ceph pool objects copies
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echo "pool_objects_copies_${pool}.label Pool ${pool} Objects Copies"
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echo "pool_objects_copies_${pool}.type GAUGE"
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echo "pool_objects_copies_${pool}.min 0"
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echo "pool_objects_copies_${pool}.info Total object copies in the pool."
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done
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# Graph set 7 - Ceph pool objects degraded
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echo 'multigraph pool_objects_degraded'
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echo "graph_title Objects Degraded"
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echo "graph_args --base 1000"
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echo "graph_vlabel Objects"
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echo "graph_category ceph"
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echo "graph_info This graph shows the cluster object degraded count."
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for pool in ${POOL_LIST}; do
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# Graph set 7 - Ceph pool objects degraded
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echo "pool_objects_degraded_${pool}.label Pool ${pool} Objects Degraded"
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echo "pool_objects_degraded_${pool}.type GAUGE"
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echo "pool_objects_degraded_${pool}.min 0"
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echo "pool_objects_degraded_${pool}.info Total degraded objects in the pool."
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done
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OSD_LIST="$( $OSDDF_CMD | jq -r '.nodes[].id' | sort -n )"
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# Graph set 8 - Ceph OSD status
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echo 'multigraph osd_status'
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echo "graph_title OSD Status"
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echo "graph_args --base 1000"
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echo "graph_vlabel Status Up (1) / Down (0)"
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echo "graph_category ceph"
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echo "graph_info This graph shows the OSD status."
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for osd in ${OSD_LIST}; do
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# Graph set 8 - Ceph OSD status
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echo "osd_status_${osd}.label osd.${osd} Status"
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echo "osd_status_${osd}.type GAUGE"
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echo "osd_status_${osd}.min 0"
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echo "osd_status_${osd}.max 1"
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echo "osd_status_${osd}.info Status of the OSD."
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done
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# Graph set 9 - Ceph OSD utilization
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echo 'multigraph osd_utilization'
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echo "graph_title OSD Utilization"
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echo "graph_args --base 1000"
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echo "graph_vlabel % Utilization"
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echo "graph_category ceph"
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echo "graph_info This graph shows the OSD utilization."
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for osd in ${OSD_LIST}; do
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# Graph set 9 - Ceph OSD utilization
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echo "osd_utilization_${osd}.label osd.${osd} Utilization"
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echo "osd_utilization_${osd}.type GAUGE"
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echo "osd_utilization_${osd}.max 100"
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echo "osd_utilization_${osd}.info Utilization of the OSD."
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done
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exit 0
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}
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output_values() {
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RADOS_JSON_OUTPUT="$( $RADOSDF_CMD )"
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OSD_JSON_OUTPUT="$( $OSDDF_CMD )"
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cluster_utilization="$( $JQ_CMD -r '.total_used' <<<"${RADOS_JSON_OUTPUT}" )"
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cluster_size="$( $JQ_CMD -r '.total_space' <<<"${RADOS_JSON_OUTPUT}" )"
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pct_utilization="$( echo "scale=4; ${cluster_utilization} / ${cluster_size} * 100" | bc -l )"
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cluster_objects="$( $JQ_CMD -r '.total_objects' <<<"${RADOS_JSON_OUTPUT}" )"
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echo "multigraph cluster_utilization"
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echo "cluster_utilization.value ${pct_utilization}"
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echo "multigraph cluster_objects"
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echo "cluster_objects.value ${cluster_objects}"
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cluster_pool_count="$( $JQ_CMD -r '.pools[].name' <<<"${RADOS_JSON_OUTPUT}" | wc -l )"
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echo "multigraph pool_rdbytes"
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for id in $( seq 0 $(( ${cluster_pool_count} - 1 )) ); do
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pool="$( $JQ_CMD -r ".pools[$id].name" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_rdbytes="$( $JQ_CMD -r ".pools[$id].read_bytes" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_wrbytes="$( $JQ_CMD -r ".pools[$id].write_bytes" <<<"${RADOS_JSON_OUTPUT}" )"
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echo "pool_rdbytes_${pool}.value ${pool_rdbytes}"
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echo "pool_wrbytes_${pool}.value ${pool_wrbytes}"
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done
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echo "multigraph pool_rdops"
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for id in $( seq 0 $(( ${cluster_pool_count} - 1 )) ); do
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pool="$( $JQ_CMD -r ".pools[$id].name" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_rdops="$( $JQ_CMD -r ".pools[$id].read_ops" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_wrops="$( $JQ_CMD -r ".pools[$id].write_ops" <<<"${RADOS_JSON_OUTPUT}" )"
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echo "pool_rdops_${pool}.value ${pool_rdops}"
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echo "pool_wrops_${pool}.value ${pool_wrops}"
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done
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echo "multigraph pool_objects_total"
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for id in $( seq 0 $(( ${cluster_pool_count} - 1 )) ); do
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pool="$( $JQ_CMD -r ".pools[$id].name" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_objects="$( $JQ_CMD -r ".pools[$id].num_objects" <<<"${RADOS_JSON_OUTPUT}" )"
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echo "pool_objects_total_${pool}.value ${pool_objects}"
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done
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echo "multigraph pool_objects_copies"
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for id in $( seq 0 $(( ${cluster_pool_count} - 1 )) ); do
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pool="$( $JQ_CMD -r ".pools[$id].name" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_copies="$( $JQ_CMD -r ".pools[$id].num_object_copies" <<<"${RADOS_JSON_OUTPUT}" )"
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echo "pool_objects_copies_${pool}.value ${pool_copies}"
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done
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echo "multigraph pool_objects_degraded"
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for id in $( seq 0 $(( ${cluster_pool_count} - 1 )) ); do
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pool="$( $JQ_CMD -r ".pools[$id].name" <<<"${RADOS_JSON_OUTPUT}" )"
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pool_degraded="$( $JQ_CMD -r ".pools[$id].num_objects_degraded" <<<"${RADOS_JSON_OUTPUT}" )"
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echo "pool_objects_degraded_${pool}.value ${pool_degraded}"
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done
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cluster_osd_count="$( $JQ_CMD -r '.nodes[].id' <<<"${OSD_JSON_OUTPUT}" | wc -l)"
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echo "multigraph osd_status"
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for id in $( seq 0 $(( ${cluster_osd_count} - 1 )) ); do
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osd="$( $JQ_CMD -r ".nodes[$id].id" <<<"${OSD_JSON_OUTPUT}" )"
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osd_status="$( $JQ_CMD -r ".nodes[$id].status" <<<"${OSD_JSON_OUTPUT}" )"
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case ${osd_status} in
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up)
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osd_status="1"
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;;
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*)
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osd_status="0"
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;;
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esac
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echo "osd_status_${osd}.value ${osd_status}"
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done
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echo "multigraph osd_utilization"
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for id in $( seq 0 $(( ${cluster_osd_count} - 1 )) ); do
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osd="$( $JQ_CMD -r ".nodes[$id].id" <<<"${OSD_JSON_OUTPUT}" )"
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osd_utilization="$( $JQ_CMD -r ".nodes[$id].utilization" <<<"${OSD_JSON_OUTPUT}" )"
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echo "osd_utilization_${osd}.value ${osd_utilization}"
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done
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}
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case $# in
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0)
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output_values
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;;
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1)
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case $1 in
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autoconf)
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output_autoconf
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;;
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config)
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output_config
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;;
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*)
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output_usage
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exit 1
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;;
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esac
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;;
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*)
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output_usage
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exit 1
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esac
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