监控Elasticsearch的插件推荐 强大的shell脚本
#!/bin/bash ################################################################################ # Script: check_es_system.sh # # Author: Claudio Kuenzler www.claudiokuenzler.com # # Purpose: Monitor ElasticSearch Store (Disk) Usage # # Licence: GPLv2 # # Licence : GNU General Public Licence (GPL) http://www.gnu.org/ # # This program is free software; you can redistribute it and/or # # modify it under the terms of the GNU General Public License # # as published by the Free Software Foundation; either version 2 # # of the License, or (at your option) any later version. # # # # This program is distributed in the hope that it will be useful, # # but WITHOUT ANY WARRANTY; without even the implied warranty of # # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # # # # GNU General Public License for more details. # # # # You should have received a copy of the GNU General Public License # # along with this program; if not, see <https://www.gnu.org/licenses/>. # # # # Copyright 2016,2018,2019 Claudio Kuenzler # # Copyright 2018 Tomas Barton # # # # History: # # 20160429: Started programming plugin # # 20160601: Continued programming. Working now as it should =) # # 20160906: Added memory usage check, check types option (-t) # # 20160906: Renamed plugin from check_es_store to check_es_system # # 20160907: Change internal referenced variable name for available size # # 20160907: Output now contains both used and available sizes # # 20161017: Add missing -t in usage output # # 20180105: Fix if statement for authentication (@deric) # # 20180105: Fix authentication when wrong credentials were used # # 20180313: Configure max_time for Elastic to respond (@deric) # # 20190219: Fix alternative subject name in ssl (issue 4), direct to auth # # 20190220: Added status check type # # 20190403: Check for mandatory parameter checktype, adjust help # # 20190403: Catch connection refused error # ################################################################################ #Variables and defaults STATE_OK=0 # define the exit code if status is OK STATE_WARNING=1 # define the exit code if status is Warning STATE_CRITICAL=2 # define the exit code if status is Critical STATE_UNKNOWN=3 # define the exit code if status is Unknown export PATH=$PATH:/usr/local/bin:/usr/bin:/bin # Set path version=1.3 port=9200 httpscheme=http unit=G warning=80 critical=95 max_time=30 ################################################################################ #Functions help () { echo -e "$0 $version (c) 2016-$(date +%Y) Claudio Kuenzler and contributers (published below GPL licence) Usage: ./check_es_system.sh -H ESNode [-P port] [-S] [-u user] [-p pass] -t checktype [-d int] [-o unit] [-w int] [-c int] [-m int] Options: * -H Hostname or ip address of ElasticSearch Node -P Port (defaults to 9200) -S Use https -u Username if authentication is required -p Password if authentication is required * -t Type of check (disk|mem|status) + -d Available size of disk or memory (ex. 20) -o Disk space unit (K|M|G) (defaults to G) -w Warning threshold in percent (default: 80) -c Critical threshold in percent (default: 95) -m Maximum time in seconds to wait for response (default: 30) -h Help! *mandatory options +mandatory options for types disk,mem Requirements: curl, jshon, expr" exit $STATE_UNKNOWN; } authlogic () { if [[ -z $user ]] && [[ -z $pass ]]; then echo "ES SYSTEM UNKNOWN - Authentication required but missing username and password"; exit $STATE_UNKNOWN elif [[ -n $user ]] && [[ -z $pass ]]; then echo "ES SYSTEM UNKNOWN - Authentication required but missing password"; exit $STATE_UNKNOWN elif [[ -n $pass ]] && [[ -z $user ]]; then echo "ES SYSTEM UNKNOWN - Missing username"; exit $STATE_UNKNOWN fi } unitcalc() { # ES presents the currently used disk space in Bytes if [[ -n $unit ]]; then case $unit in K) availsize=$(expr $available * 1024); outputsize=$(expr ${size} / 1024);; M) availsize=$(expr $available * 1024 * 1024); outputsize=$(expr ${size} / 1024 / 1024);; G) availsize=$(expr $available * 1024 * 1024 * 1024); outputsize=$(expr ${size} / 1024 / 1024 / 1024);; esac if [[ -n $warning ]] ; then warningsize=$(expr $warning * ${availsize} / 100) fi if [[ -n $critical ]] ; then criticalsize=$(expr $critical * ${availsize} / 100) fi usedpercent=$(expr $size * 100 / $availsize) else echo "UNKNOWN - Shouldnt exit here. No units given"; exit $STATE_UNKNOWN fi } availrequired() { if [ -z ${available} ]; then echo "UNKNOWN - Missing parameter '-d'"; exit $STATE_UNKNOWN; fi } ################################################################################ # Check requirements for cmd in curl jshon expr; do if ! `which ${cmd} 1>/dev/null`; then echo "UNKNOWN: ${cmd} does not exist, please check if command exists and PATH is correct" exit ${STATE_UNKNOWN} fi done ################################################################################ # Check for people who need help - aren't we all nice ;-) if [ "${1}" = "--help" -o "${#}" = "0" ]; then help; exit $STATE_UNKNOWN; fi ################################################################################ # Get user-given variables while getopts "H:P:Su:p:d:o:w:c:t:m:" Input; do case ${Input} in H) host=${OPTARG};; P) port=${OPTARG};; S) httpscheme=https;; u) user=${OPTARG};; p) pass=${OPTARG};; d) available=${OPTARG};; o) unit=${OPTARG};; w) warning=${OPTARG};; c) critical=${OPTARG};; t) checktype=${OPTARG};; m) max_time=${OPTARG};; *) help;; esac done # Check for mandatory opts if [ -z ${host} ]; then help; exit $STATE_UNKNOWN; fi if [ -z ${checktype} ]; then help; exit $STATE_UNKNOWN; fi ################################################################################ # Retrieve information from Elasticsearch esurl="${httpscheme}://${host}:${port}/_cluster/stats" eshealthurl="${httpscheme}://${host}:${port}/_cluster/health" if [[ -z $user ]]; then # Without authentication esstatus=$(curl -k -s --max-time ${max_time} $esurl) if [[ $? -eq 7 ]]; then echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused" exit $STATE_CRITICAL elif [[ $? -eq 28 ]]; then echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds" exit $STATE_CRITICAL fi # Additionally get cluster health infos if [ $checktype = status ]; then eshealth=$(curl -k -s --max-time ${max_time} $eshealthurl) fi fi if [[ -n $user ]] || [[ -n $(echo $esstatus | grep -i authentication) ]] ; then # Authentication required authlogic esstatus=$(curl -k -s --max-time ${max_time} --basic -u ${user}:${pass} $esurl) if [[ $? -eq 7 ]]; then echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused" exit $STATE_CRITICAL elif [[ $? -eq 28 ]]; then echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds" exit $STATE_CRITICAL elif [[ -n $(echo $esstatus | grep -i "unable to authenticate") ]]; then echo "ES SYSTEM CRITICAL - Unable to authenticate user $user for REST request" exit $STATE_CRITICAL fi # Additionally get cluster health infos if [[ $checktype = status ]]; then eshealth=$(curl -k -s --max-time ${max_time} --basic -u ${user}:${pass} $eshealthurl) fi fi # Catch empty reply from server (typically happens when ssl port used with http connection) if [[ -z $esstatus ]] || [[ $esstatus = '' ]]; then echo "ES SYSTEM UNKNOWN - Empty reply from server (verify ssl settings)" exit $STATE_UNKNOWN fi # Do the checks case $checktype in disk) # Check disk usage availrequired size=$(echo $esstatus | jshon -e indices -e store -e "size_in_bytes") unitcalc if [ -n "${warning}" ] || [ -n "${critical}" ]; then # Handle tresholds if [ $size -ge $criticalsize ]; then echo "ES SYSTEM CRITICAL - Disk usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_disk=${size}B;${warningsize};${criticalsize};;" exit $STATE_CRITICAL elif [ $size -ge $warningsize ]; then echo "ES SYSTEM WARNING - Disk usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_disk=${size}B;${warningsize};${criticalsize};;" exit $STATE_WARNING else echo "ES SYSTEM OK - Disk usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_disk=${size}B;${warningsize};${criticalsize};;" exit $STATE_OK fi else # No thresholds echo "ES SYSTEM OK - Disk usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_disk=${size}B;;;;" exit $STATE_OK fi ;; mem) # Check memory usage availrequired size=$(echo $esstatus | jshon -e nodes -e jvm -e mem -e "heap_used_in_bytes") unitcalc if [ -n "${warning}" ] || [ -n "${critical}" ]; then # Handle tresholds if [ $size -ge $criticalsize ]; then echo "ES SYSTEM CRITICAL - Memory usage is at ${usedpercent}% ($outputsize $unit) from $available $unit|es_memory=${size}B;${warningsize};${criticalsize};;" exit $STATE_CRITICAL elif [ $size -ge $warningsize ]; then echo "ES SYSTEM WARNING - Memory usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_memory=${size}B;${warningsize};${criticalsize};;" exit $STATE_WARNING else echo "ES SYSTEM OK - Memory usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_memory=${size}B;${warningsize};${criticalsize};;" exit $STATE_OK fi else # No thresholds echo "ES SYSTEM OK - Memory usage is at ${usedpercent}% ($outputsize $unit from $available $unit)|es_memory=${size}B;;;;" exit $STATE_OK fi ;; status) # Check Elasticsearch status status=$(echo $esstatus | jshon -e status -u) shards=$(echo $esstatus | jshon -e indices -e shards -e total -u) docs=$(echo $esstatus | jshon -e indices -e docs -e count -u) nodest=$(echo $esstatus | jshon -e nodes -e count -e total -u) nodesd=$(echo $esstatus | jshon -e nodes -e count -e data -u) relocating=$(echo $eshealth | jshon -e relocating_shards -u) init=$(echo $eshealth | jshon -e initializing_shards -u) unass=$(echo $eshealth | jshon -e unassigned_shards -u) if [ "$status" = "green" ]; then echo "ES SYSTEM OK - Elasticsearch Cluster is green (${nodest} nodes, ${nodesd} data nodes, ${shards} shards, ${docs} docs)|total_nodes=${nodest};;;; data_nodes=${nodesd};;;; total_shards=${shards};;;; relocating_shards=${relocating};;;; initializing_shards=${init};;;; unassigned_shards=${unass};;;; docs=${docs};;;;" exit $STATE_OK elif [ "$status" = "yellow" ]; then echo "ES SYSTEM WARNING - Elasticsearch Cluster is yellow (${nodest} nodes, ${nodesd} data nodes, ${shards} shards, ${relocating} relocating shards, ${init} initializing shards, ${unass} unassigned shards, ${docs} docs)|total_nodes=${nodest};;;; data_nodes=${nodesd};;;; total_shards=${shards};;;; relocating_shards=${relocating};;;; initializing_shards=${init};;;; unassigned_shards=${unass};;;; docs=${docs};;;;" exit $STATE_WARNING elif [ "$status" = "red" ]; then echo "ES SYSTEM CRITICAL - Elasticsearch Cluster is red (${nodest} nodes, ${nodesd} data nodes, ${shards} shards, ${relocating} relocating shards, ${init} initializing shards, ${unass} unassigned shards, ${docs} docs)|total_nodes=${nodest};;;; data_nodes=${nodesd};;;; total_shards=${shards};;;; relocating_shards=${relocating};;;; initializing_shards=${init};;;; unassigned_shards=${unass};;;; docs=${docs};;;;" exit $STATE_CRITICAL fi ;; *) help esac
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https://www.claudiokuenzler.com/monitoring-plugins/check_es_system.php