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check_es_system: Adding new plugin

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Jan Wagner 2022-02-19 21:33:36 +01:00
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check_es_system/Makefile Normal file
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#/usr/bin/make -f
PLUGIN = src/check_es_system
CLEANEXTRAFILES = $(PLUGIN)
DOCFILES = src/README.md
include ../common.mk
src/$(PLUGIN): src/$(PLUGIN).sh
cp $< $@

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check_es_system/check_es_system-1.12.0/.travis.yml Normal file
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---
sudo: required
dist: focal
language: generic
services:
- elasticsearch
before_install:
- sudo apt-get update -q
- sudo apt-get install curl jq
before_script:
#- sleep 10
script:
- ./check_es_system.sh --help || true
- |
test/test_status.sh
test/test_readonly.sh

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check_es_system/check_es_system-1.12.0/LICENSE Normal file
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GNU GENERAL PUBLIC LICENSE
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# check_es_system
This is a monitoring plugin to check the status of an ElasticSearch cluster node. Besides the classical status check (green, yellow, red) this plugin also allows to monitor disk or memory usage of Elasticsearch. This is especially helpful when running Elasticsearch in the cloud (e.g. Elasticsearch as a service) because, as ES does not run on your own server, you cannot monitor the disk or memory usage. This is where this plugin comes in. Just tell the plugin how much resources (diskspace, memory capacity) you have available (-d) and it will alarm you when you reach a threshold.
Besides that, the plugin offers additional (advanced) checks of a Elasticsearch node/cluster (Java Threads, Thread Pool Statistics, Master Verification, Read-Only Indexes, ...).
Please refer to https://www.claudiokuenzler.com/monitoring-plugins/check_es_system.php for full documentation and usage examples.
Requirements
------
- The following commands must be available: `curl`, `expr`
- One of the following json parsers must be available: `jshon` or `jq` (defaults to jq)
Usage
------
./check_es_system.sh -H ESNode [-P port] [-S] [-u user] [-p pass] [-d available] -t check [-o unit] [-i indexes] [-w warn] [-c crit] [-m max_time] [-e node] [-X jq|jshon]

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#!/bin/bash
################################################################################
# Script: check_es_system.sh #
# Author: Claudio Kuenzler www.claudiokuenzler.com #
# Purpose: Monitor ElasticSearch Store (Disk) Usage #
# Official doc: www.claudiokuenzler.com/monitoring-plugins/check_es_system.php #
# License: GPLv2 #
# 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 2016,2018-2021 Claudio Kuenzler #
# Copyright 2018 Tomas Barton #
# Copyright 2020 NotAProfessionalDeveloper #
# Copyright 2020 tatref #
# Copyright 2020 fbomj #
# Copyright 2021 chicco27 #
# #
# 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 #
# 20190426: Catch unauthorized (403) error #
# 20190626: Added readonly check type #
# 20190905: Catch empty cluster health status (issue #13) #
# 20190909: Added jthreads and tps (thread pool stats) check types #
# 20190909: Handle correct curl return codes #
# 20190924: Missing 'than' in tps output #
# 20191104: Added master check type #
# 20200401: Fix/handle 503 errors with curl exit code 0 (issue #20) #
# 20200409: Fix 503 error lookup (issue #22) #
# 20200430: Support both jshon and jq as json parsers (issue #18) #
# 20200609: Fix readonly check on ALL indices (issue #26) #
# 20200723: Add cluster name to status output #
# 20200824: Fix typo in readonly check output #
# 20200916: Internal renaming of -i parameter, use for tps check (issue #28) #
# 20201110: Fix thresholds in jthreads check #
# 20201125: Show names of read_only indexes with jq, set jq as default parser #
# 20210616: Fix authentication bug (#38) and non ES URL responding (#39) #
# 20211202: Added local node (-L), SSL settings (-K, -E), cpu check #
################################################################################
#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=1.12.0
port=9200
httpscheme=http
unit=G
include='_all'
max_time=30
parsers=(jq jshon)
################################################################################
#Functions
help () {
echo -e "$0 $version (c) 2016-$(date +%Y) Claudio Kuenzler and contributors (open source rulez!)
Usage: ./check_es_system.sh -H ESNode [-P port] [-S] [-u user -p pass|-E cert -K key] -t checktype [-o unit] [-w int] [-c int] [-m int] [-e string] [-X parser]
Options:
* -H Hostname or ip address of ElasticSearch Node
-L Run check on local node instead of cluster
-P Port (defaults to 9200)
-S Use https
-E Certs for Authentication
-K Key for Authentication
-u Username if authentication is required
-p Password if authentication is required
* -t Type of check (disk, mem, cpu, status, readonly, jthreads, tps, master)
-o Disk space unit (K|M|G) (defaults to G)
-i Space separated list of included object names to be checked (index names on readonly check, pool names on tps check)
-w Warning threshold (see usage notes below)
-c Critical threshold (see usage notes below)
-m Maximum time in seconds to wait for response (default: 30)
-e Expect master node (used with 'master' check)
-X The json parser to be used jshon or jq (default: jq)
-h Help!
*mandatory options
Threshold format for 'disk', 'mem' and 'cpu': int (for percent), defaults to 80 (warn) and 95 (crit)
Threshold format for 'tps': int,int,int (active, queued, rejected), no defaults
Threshold format for all other check types': int, no defaults
Requirements: curl, expr and one of $(IFS=,; echo "${parsers[*]}")"
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
}
authlogic_cert () {
if [[ -z $cert ]] && [[ -z $key ]]; then echo "ES SYSTEM UNKNOWN - Authentication required but missing cert and key"; exit $STATE_UNKNOWN
elif [[ -n $cert ]] && [[ -z $key ]]; then echo "ES SYSTEM UNKNOWN - Authentication required but missing key"; exit $STATE_UNKNOWN
elif [[ -n $key ]] && [[ -z $cert ]]; then echo "ES SYSTEM UNKNOWN - Missing cert"; 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 \* ${available} / 100)
fi
if [[ -n $critical ]] ; then
criticalsize=$(expr $critical \* ${available} / 100)
fi
usedpercent=$(expr $size \* 100 / $available)
else echo "UNKNOWN - Shouldnt exit here. No units given"; exit $STATE_UNKNOWN
fi
}
thresholdlogic () {
if [ -n $warning ] && [ -z $critical ]; then echo "UNKNOWN - Define both warning and critical thresholds"; exit $STATE_UNKNOWN; fi
if [ -n $critical ] && [ -z $warning ]; then echo "UNKNOWN - Define both warning and critical thresholds"; exit $STATE_UNKNOWN; fi
}
default_percentage_thresholds() {
if [ -z $warning ] || [ "${warning}" = "" ]; then warning=80; fi
if [ -z $critical ] || [ "${critical}" = "" ]; then critical=95; fi
}
json_parse() {
json_parse_usage() { echo "$0: [-r] [-q] [-c] [-a] -x arg1 -x arg2 ..." 1>&2; exit; }
local OPTIND opt r q c a x
while getopts ":rqcax:" opt
do
case "${opt}" in
r) raw=1;;
q) quiet=1;; # only required for jshon
c) continue=1;; # only required for jshon
a) across=1;;
x) args+=("$OPTARG");;
*) json_parse_usage;;
esac
done
case ${parser} in
jshon)
cmd=()
for arg in "${args[@]}"; do
cmd+=(-e $arg)
done
jshon ${quiet:+-Q} ${continue:+-C} ${across:+-a} "${cmd[@]}" ${raw:+-u}
;;
jq)
cmd=()
for arg in "${args[@]}"; do
cmd+=(.$arg)
done
jq ${raw:+-r} $(IFS=; echo ${across:+.[]}"${cmd[*]}")
;;
esac
}
################################################################################
# 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:LP:SE:K:u:p:d:o:i:w:c:t:m:e:X:" Input
do
case ${Input} in
H) host=${OPTARG};;
L) local=true;;
P) port=${OPTARG};;
S) httpscheme=https;;
E) cert=${OPTARG};;
K) key=${OPTARG};;
u) user=${OPTARG};;
p) pass=${OPTARG};;
d) oldavailable=${OPTARG};;
o) unit=${OPTARG};;
i) include=${OPTARG};;
w) warning=${OPTARG};;
c) critical=${OPTARG};;
t) checktype=${OPTARG};;
m) max_time=${OPTARG};;
e) expect_master=${OPTARG};;
X) parser=${OPTARG:=jq};;
*) 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
# Check for deprecated opts
if [[ -n ${oldavailable} ]]; then
echo "ES SYSTEM UNKNOWN: -d parameter is now invalid. Capacities are now discovered directly from Elasticsearch."
exit ${STATE_UNKNOWN}
fi
# Local checks are only useful for certain check types
if [[ -n ${local} ]] && ( ! [[ ${checktype} =~ ^(cpu|mem|disk|jthreads)$ ]] ); then
echo "ES SYSTEM UNKNOWN: Node local checks (-L) only work with the following check types: cpu, mem, disk, jthreads"
exit ${STATE_UNKNOWN}
fi
################################################################################
# Check requirements
for cmd in curl expr ${parser}; do
if ! `which ${cmd} >/dev/null 2>&1`; then
echo "UNKNOWN: ${cmd} does not exist, please check if command exists and PATH is correct"
exit ${STATE_UNKNOWN}
fi
done
# Find parser
if [ -z ${parser} ]; then
for cmd in ${parsers[@]}; do
if `which ${cmd} >/dev/null 2>&1`; then
parser=${cmd}
break
fi
done
if [ -z "${parser}" ]; then
echo "UNKNOWN: No JSON parser found. Either one of the following is required: $(IFS=,; echo "${parsers[*]}")"
exit ${STATE_UNKNOWN}
fi
fi
################################################################################
# Retrieve information from Elasticsearch cluster
getstatus() {
if [[ ${local} ]]; then
esurl="${httpscheme}://${host}:${port}/_nodes/_local/stats"
else
esurl="${httpscheme}://${host}:${port}/_cluster/stats"
fi
eshealthurl="${httpscheme}://${host}:${port}/_cluster/health"
if [[ -z $user ]] && [[ -z $cert ]]; then
# Without authentication
esstatus=$(curl -k -s --max-time ${max_time} $esurl)
esstatusrc=$?
if [[ $esstatusrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $esstatusrc -eq 28 ]]; then
echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds"
exit $STATE_CRITICAL
elif [[ "$esstatus" =~ "503 Service Unavailable" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available: ${host}:${port} return error 503"
exit $STATE_CRITICAL
elif [[ "$esstatus" =~ "Unknown resource" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available: ${esstatus}"
exit $STATE_CRITICAL
elif ! [[ "$esstatus" =~ "cluster_name" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available at this address ${host}:${port}"
exit $STATE_CRITICAL
fi
# Additionally get cluster health infos
if [ $checktype = status ]; then
eshealth=$(curl -k -s --max-time ${max_time} $eshealthurl)
if [[ -z $eshealth ]]; then
echo "ES SYSTEM CRITICAL - unable to get cluster health information"
exit $STATE_CRITICAL
fi
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} $esurl)
esstatusrc=$?
if [[ $esstatusrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $esstatusrc -eq 28 ]]; then
echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds"
exit $STATE_CRITICAL
elif [[ "$esstatus" =~ "503 Service Unavailable" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available: ${host}:${port} return error 503"
exit $STATE_CRITICAL
elif [[ "$esstatus" =~ "Unknown resource" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available: ${esstatus}"
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
elif [[ -n $(echo "$esstatus" | grep -i "unauthorized") ]]; then
echo "ES SYSTEM CRITICAL - User $user is unauthorized"
exit $STATE_CRITICAL
elif ! [[ "$esstatus" =~ "cluster_name" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available at this address ${host}:${port}"
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)
if [[ -z $eshealth ]]; then
echo "ES SYSTEM CRITICAL - unable to get cluster health information"
exit $STATE_CRITICAL
fi
fi
fi
if [[ -n $cert ]] || [[ -n $(echo $esstatus | grep -i authentication) ]] ; then
# Authentication with certificate
authlogic_cert
esstatus=$(curl -k -s --max-time ${max_time} -E ${cert} --key ${key} $esurl)
esstatusrc=$?
if [[ $esstatusrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $esstatusrc -eq 28 ]]; then
echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds"
exit $STATE_CRITICAL
elif [[ "$esstatus" =~ "503 Service Unavailable" ]]; then
echo "ES SYSTEM CRITICAL - Elasticsearch not available: ${host}:${port} return error 503"
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
elif [[ -n $(echo "$esstatus" | grep -i "unauthorized") ]]; then
echo "ES SYSTEM CRITICAL - User $user is unauthorized"
exit $STATE_CRITICAL
fi
# Additionally get cluster health infos
if [[ $checktype = status ]]; then
eshealth=$(curl -k -s --max-time ${max_time} -E ${cert} --key ${key} $eshealthurl)
if [[ -z $eshealth ]]; then
echo "ES SYSTEM CRITICAL - unable to get cluster health information"
exit $STATE_CRITICAL
fi
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
getstatus
default_percentage_thresholds
if [[ ${local} ]]; then
size=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x indices -x store -x size_in_bytes)
available=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x fs -x total -x total_in_bytes)
else
size=$(echo $esstatus | json_parse -x indices -x store -x size_in_bytes)
available=$(echo $esstatus | json_parse -x nodes -x fs -x total_in_bytes)
fi
unitcalc
if [ -n "${warning}" ] || [ -n "${critical}" ]; then
# Handle tresholds
thresholdlogic
if [ $size -ge $criticalsize ]; then
echo "ES SYSTEM CRITICAL - Disk usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_disk=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_CRITICAL
elif [ $size -ge $warningsize ]; then
echo "ES SYSTEM WARNING - Disk usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_disk=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_WARNING
else
echo "ES SYSTEM OK - Disk usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_disk=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_OK
fi
else
# No thresholds
echo "ES SYSTEM OK - Disk usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_disk=${size}B;;;0;${available}"
exit $STATE_OK
fi
;;
mem) # Check memory usage
getstatus
default_percentage_thresholds
if [[ ${local} ]]; then
size=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x jvm -x mem -x heap_used_in_bytes)
available=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x jvm -x mem -x heap_max_in_bytes)
else
size=$(echo $esstatus | json_parse -x nodes -x jvm -x mem -x heap_used_in_bytes)
available=$(echo $esstatus | json_parse -x nodes -x jvm -x mem -x heap_max_in_bytes)
fi
unitcalc
if [ -n "${warning}" ] || [ -n "${critical}" ]; then
# Handle tresholds
thresholdlogic
if [ $size -ge $criticalsize ]; then
echo "ES SYSTEM CRITICAL - Memory usage is at ${usedpercent}% ($outputsize $unit) from $availsize $unit|es_memory=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_CRITICAL
elif [ $size -ge $warningsize ]; then
echo "ES SYSTEM WARNING - Memory usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_memory=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_WARNING
else
echo "ES SYSTEM OK - Memory usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_memory=${size}B;${warningsize};${criticalsize};0;${available}"
exit $STATE_OK
fi
else
# No thresholds
echo "ES SYSTEM OK - Memory usage is at ${usedpercent}% ($outputsize $unit from $availsize $unit)|es_memory=${size}B;;;0;${available}"
exit $STATE_OK
fi
;;
cpu) # Check memory usage
getstatus
default_percentage_thresholds
if [[ ${local} ]]; then
value=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x process -x cpu -x percent)
else
value=$(echo $esstatus | json_parse -x nodes -x process -x cpu -x percent)
fi
if [ -n "${warning}" ] || [ -n "${critical}" ]; then
# Handle tresholds
thresholdlogic
if [ $value -ge $critical ]; then
echo "ES SYSTEM CRITICAL - CPU usage is at ${value}% |es_cpu=${value}%;${warning};${critical};0;100"
exit $STATE_CRITICAL
elif [ $value -ge $warning ]; then
echo "ES SYSTEM WARNING - CPU usage is at ${value}% |es_cpu=${value}%;${warning};${critical};0;100"
exit $STATE_WARNING
else
echo "ES SYSTEM OK - CPU usage is at ${value}% |es_cpu=${value}%;${warning};${critical};0;100"
exit $STATE_OK
fi
else
# No thresholds
echo "ES SYSTEM OK - CPU usage is at ${value}% |es_cpu=${value}%;${warning};${critical};0;100"
exit $STATE_OK
fi
;;
status) # Check Elasticsearch status
getstatus
status=$(echo $esstatus | json_parse -r -x status)
clustername=$(echo $esstatus | json_parse -r -x cluster_name)
shards=$(echo $esstatus | json_parse -r -x indices -x shards -x total)
docs=$(echo $esstatus | json_parse -r -x indices -x docs -x count)
nodest=$(echo $esstatus | json_parse -r -x nodes -x count -x total)
nodesd=$(echo $esstatus | json_parse -r -x nodes -x count -x data)
relocating=$(echo $eshealth | json_parse -r -x relocating_shards)
init=$(echo $eshealth | json_parse -r -x initializing_shards)
unass=$(echo $eshealth | json_parse -r -x unassigned_shards)
if [ "$status" = "green" ]; then
echo "ES SYSTEM OK - Elasticsearch Cluster \"$clustername\" is green (${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 \"$clustername\" is yellow (${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 \"$clustername\" is red (${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
;;
readonly) # Check Readonly status on given indexes
getstatus
icount=0
for index in $include; do
if [[ -z $user ]]; then
# Without authentication
settings=$(curl -k -s --max-time ${max_time} ${httpscheme}://${host}:${port}/$index/_settings)
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 $STATE_CRITICAL
fi
rocount=$(echo $settings | json_parse -r -q -c -a -x settings -x index -x blocks -x read_only | grep -c true)
roadcount=$(echo $settings | json_parse -r -q -c -a -x settings -x index -x blocks -x read_only_allow_delete | grep -c true)
if [[ $rocount -gt 0 ]]; then
output[${icount}]=" $index is read-only -"
roerror=true
fi
if [[ $roadcount -gt 0 ]]; then
output[${icount}]+=" $index is read-only (allow delete) -"
roerror=true
fi
fi
if [[ -n $user ]] || [[ -n $(echo $esstatus | grep -i authentication) ]] ; then
# Authentication required
authlogic
settings=$(curl -k -s --max-time ${max_time} --basic -u ${user}:${pass} ${httpscheme}://${host}:${port}/$index/_settings)
settingsrc=$?
if [[ $settingsrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $settingsrc -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
elif [[ -n $(echo $esstatus | grep -i "unauthorized") ]]; then
echo "ES SYSTEM CRITICAL - User $user is unauthorized"
exit $STATE_CRITICAL
fi
rocount=$(echo $settings | json_parse -r -q -c -a -x settings -x index -x blocks -x read_only | grep -c true)
roadcount=$(echo $settings | json_parse -r -q -c -a -x settings -x index -x blocks -x read_only_allow_delete | grep -c true)
if [[ $rocount -gt 0 ]]; then
if [[ "$index" = "_all" ]]; then
if [[ $parser = "jq" ]]; then
roindexes=$(echo $settings | jq -r '.[].settings.index |select(.blocks.read_only == "true").provided_name')
fi
output[${icount}]=" $rocount index(es) found read-only $roindexes -"
else output[${icount}]=" $index is read-only -"
fi
roerror=true
fi
if [[ $roadcount -gt 0 ]]; then
if [[ "$index" = "_all" ]]; then
if [[ $parser = "jq" ]]; then
roadindexes=$(echo $settings | jq -r '.[].settings.index |select(.blocks.read_only_allow_delete == "true").provided_name' | tr '\n' ' ')
fi
output[${icount}]+=" $roadcount index(es) found read-only (allow delete) $roadindexes"
else output[${icount}]+=" $index is read-only (allow delete) -"
fi
roerror=true
fi
fi
let icount++
done
if [[ $roerror ]]; then
echo "ES SYSTEM CRITICAL - ${output[*]}"
exit $STATE_CRITICAL
else
echo "ES SYSTEM OK - Elasticsearch Indexes ($include) are writeable"
exit $STATE_OK
fi
;;
jthreads) # Check JVM threads
getstatus
if [[ ${local} ]]; then
threads=$(echo $esstatus | json_parse -x 'nodes|' -x '[]' -x jvm -x threads -x count)
else
threads=$(echo $esstatus | json_parse -r -x nodes -x jvm -x "threads")
fi
if [ -n "${warning}" ] || [ -n "${critical}" ]; then
# Handle tresholds
thresholdlogic
if [[ $threads -ge $critical ]]; then
echo "ES SYSTEM CRITICAL - Number of JVM threads is ${threads}|es_jvm_threads=${threads};${warning};${critical};;"
exit $STATE_CRITICAL
elif [[ $threads -ge $warning ]]; then
echo "ES SYSTEM WARNING - Number of JVM threads is ${threads}|es_jvm_threads=${threads};${warning};${critical};;"
exit $STATE_WARNING
else
echo "ES SYSTEM OK - Number of JVM threads is ${threads}|es_jvm_threads=${threads};${warning};${critical};;"
exit $STATE_OK
fi
else
# No thresholds
echo "ES SYSTEM OK - Number of JVM threads is ${threads}|es_jvm_threads=${threads};${warning};${critical};;"
exit $STATE_OK
fi
;;
tps) # Check Thread Pool Statistics
getstatus
if [[ -z $user ]]; then
# Without authentication
threadpools=$(curl -k -s --max-time ${max_time} ${httpscheme}://${host}:${port}/_cat/thread_pool)
threadpoolrc=$?
if [[ $threadpoolrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $threadpoolrc -eq 28 ]]; then
echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds"
exit $STATE_CRITICAL
fi
fi
if [[ -n $user ]] || [[ -n $(echo $esstatus | grep -i authentication) ]] ; then
# Authentication required
authlogic
threadpools=$(curl -k -s --max-time ${max_time} --basic -u ${user}:${pass} ${httpscheme}://${host}:${port}/_cat/thread_pool)
threadpoolrc=$?
if [[ $threadpoolrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $threadpoolrc -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
elif [[ -n $(echo $esstatus | grep -i "unauthorized") ]]; then
echo "ES SYSTEM CRITICAL - User $user is unauthorized"
exit $STATE_CRITICAL
fi
fi
if ! [[ $include = "_all" ]]; then
tpsgrep=$(echo "$include" | sed "s/ /|/g")
threadpools=$(echo "$threadpools" | egrep -i "(${tpsgrep})")
if [[ $(echo ${threadpools[*]}) = "" ]]; then
echo "Thread Pool check is critical: No thread pools found with given name(s): ${include}."
exit $STATE_CRITICAL
fi
fi
tpname=($(echo "$threadpools" | awk '{print $1"-"$2}' | sed "s/\n//g"))
tpactive=($(echo "$threadpools" | awk '{print $3}' | sed "s/\n//g"))
tpqueue=($(echo "$threadpools" | awk '{print $4}' | sed "s/\n//g"))
tprejected=($(echo "$threadpools" | awk '{print $5}' | sed "s/\n//g"))
if [ -n "${warning}" ] || [ -n "${critical}" ]; then
# Handle thresholds. They have to come in a special format: n,n,n (active, queue, rejected)
thresholdlogic
wactive=$(echo ${warning} | awk -F',' '{print $1}')
wqueue=$(echo ${warning} | awk -F',' '{print $2}')
wrejected=$(echo ${warning} | awk -F',' '{print $3}')
cactive=$(echo ${critical} | awk -F',' '{print $1}')
cqueue=$(echo ${critical} | awk -F',' '{print $2}')
crejected=$(echo ${critical} | awk -F',' '{print $3}')
i=0; for tp in ${tpname[*]}; do
perfdata[$i]="tp_${tp}_active=${tpactive[$i]};${wactive};${cactive};; tp_${tp}_queue=${tpqueue[$i]};${wqueue};${cqueue};; tp_${tp}_rejected=${tprejected[$i]};${wrejected};${crejected};; "
let i++
done
i=0
for tpa in $(echo ${tpactive[*]}); do
if [[ $tpa -ge $cactive ]]; then
echo "Thread Pool ${tpname[$i]} is critical: Active ($tpa) is equal or higher than threshold ($cactive)|${perfdata[*]}"
exit $STATE_CRITICAL
elif [[ $tpa -ge $wactive ]]; then
echo "Thread Pool ${tpname[$i]} is warning: Active ($tpa) is equal or higher than threshold ($wactive)|${perfdata[*]}"
exit $STATE_WARNING
fi
let i++
done
i=0
for tpq in $(echo ${tpqueue[*]}); do
if [[ $tpq -ge $cqueue ]]; then
echo "Thread Pool ${tpname[$i]} is critical: Queue ($tpq) is equal or higher than threshold ($cqueue)|${perfdata[*]}"
exit $STATE_CRITICAL
elif [[ $tpq -ge $wqueue ]]; then
echo "Thread Pool ${tpname[$i]} is warning: Queue ($tpq) is equal or higher than threshold ($wqueue)|${perfdata[*]}"
exit $STATE_WARNING
fi
let i++
done
i=0
for tpr in $(echo ${tprejected[*]}); do
if [[ $tpr -ge $crejected ]]; then
echo "Thread Pool ${tpname[$i]} is critical: Rejected ($tpr) is equal or higher than threshold ($crejected)|${perfdata[*]}"
exit $STATE_CRITICAL
elif [[ $tpr -ge $wrejected ]]; then
echo "Thread Pool ${tpname[$i]} is warning: Rejected ($tpr) is equal or higher than threshold ($wrejected)|${perfdata[*]}"
exit $STATE_WARNING
fi
let i++
done
echo "ES SYSTEM OK - Found ${#tpname[*]} thread pools in cluster|${perfdata[*]}"
exit $STATE_OK
fi
# No Thresholds
i=0; for tp in ${tpname[*]}; do
perfdata[$i]="tp_${tp}_active=${tpactive[$i]};;;; tp_${tp}_queue=${tpqueue[$i]};;;; tp_${tp}_rejected=${tprejected[$i]};;;; "
let i++
done
echo "ES SYSTEM OK - Found ${#tpname[*]} thread pools in cluster|${perfdata[*]}"
exit $STATE_OK
;;
master) # Check Cluster Master
getstatus
if [[ -z $user ]]; then
# Without authentication
master=$(curl -k -s --max-time ${max_time} ${httpscheme}://${host}:${port}/_cat/master)
masterrc=$?
if [[ $masterrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $masterrc -eq 28 ]]; then
echo "ES SYSTEM CRITICAL - server did not respond within ${max_time} seconds"
exit $STATE_CRITICAL
fi
fi
if [[ -n $user ]] || [[ -n $(echo $esstatus | grep -i authentication) ]] ; then
# Authentication required
authlogic
master=$(curl -k -s --max-time ${max_time} --basic -u ${user}:${pass} ${httpscheme}://${host}:${port}/_cat/master)
masterrc=$?
if [[ $threadpoolrc -eq 7 ]]; then
echo "ES SYSTEM CRITICAL - Failed to connect to ${host} port ${port}: Connection refused"
exit $STATE_CRITICAL
elif [[ $threadpoolrc -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
elif [[ -n $(echo $esstatus | grep -i "unauthorized") ]]; then
echo "ES SYSTEM CRITICAL - User $user is unauthorized"
exit $STATE_CRITICAL
fi
fi
masternode=$(echo "$master" | awk '{print $NF}')
if [[ -n ${expect_master} ]]; then
if [[ "${expect_master}" = "${masternode}" ]]; then
echo "ES SYSTEM OK - Master node is $masternode"
exit $STATE_OK
else
echo "ES SYSTEM WARNING - Master node is $masternode but expected ${expect_master}"
exit $STATE_WARNING
fi
else
echo "ES SYSTEM OK - Master node is $masternode"
exit $STATE_OK
fi
;;
*) help
esac

27
check_es_system/check_es_system-1.12.0/test/test_readonly.sh Executable file
View file

@ -0,0 +1,27 @@
#!/bin/bash
echo "Test Elasticsearch status"
./check_es_system.sh -H 127.0.0.1 -P 9200 -t readonly
if [[ $? -eq 0 ]]; then
echo -e "\e[1m\e[32m✔ Test 2.1 OK: Readonly check worked and no read_only indexes were found\e[0m"
exitcode=0
else
echo -e "\e[1m\e[31m✘ Test 2.1 ERROR: Readonly check has not worked or read_only indexes were found\e[0m"
exitcode=1
fi
# Create an index with read_only setting
curl -X PUT "127.0.0.1:9200/my-index-002" -H 'Content-Type: application/json' -d'{ "settings": { "index": { "blocks.read_only": true } } }'
sleep 5
./check_es_system.sh -H 127.0.0.1 -P 9200 -t readonly
if [[ $? -eq 2 ]]; then
echo -e "\e[1m\e[32m✔ Test 2.1 OK: Readonly check worked and detected a read only index\e[0m"
exitcode=0
else
echo -e "\e[1m\e[31m✘ Test 2.1 ERROR: Readonly check has not worked as expected\e[0m"
exitcode=1
fi
exit $exitcode

27
check_es_system/check_es_system-1.12.0/test/test_status.sh Executable file
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@ -0,0 +1,27 @@
#!/bin/bash
echo "Test Elasticsearch status"
./check_es_system.sh -H 127.0.0.1 -P 9200 -t status
if [[ $? -eq 0 ]]; then
echo -e "\e[1m\e[32m✔ Test 1.1 OK: Status check worked and shows green\e[0m"
exitcode=0
else
echo -e "\e[1m\e[31m✘ Test 1.1 ERROR: Status check has not worked\e[0m"
exitcode=1
fi
# Create index with a replica, this should result in unassigned shards and yellow status
curl -X PUT "127.0.0.1:9200/my-index-001" -H 'Content-Type: application/json' -d'{ "settings": { "index": { "number_of_shards": 2, "number_of_replicas": 1 } } }'
sleep 5
./check_es_system.sh -H 127.0.0.1 -P 9200 -t status
if [[ $? -eq 1 ]]; then
echo -e "\e[1m\e[32m✔ Test 1.2 OK: Status check worked and shows yellow\e[0m"
exitcode=0
else
echo -e "\e[1m\e[31m✘ Test 1.2 ERROR: Status check has not worked as expected\e[0m"
exitcode=1
fi
exit $exitcode

6
check_es_system/control Normal file
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@ -0,0 +1,6 @@
Uploaders: Jan Wagner <waja@cyconet.org>
Recommends: curl, jshon | jq
Version: 1.12.0
Homepage: https://github.com/Napsty/check_es_system/
Watch: https://github.com/Napsty/check_es_system/tags .*/v?(\d\S+)\.tar\.gz
Description: Plugin script to check the status of an ElasticSearch cluster node.

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Copyright (c) Claudio Kuenzler <ck@claudiokuenzler.com>
License: GPL v2
On Debian systems, the complete text of the GNU General
Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".

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check_es_system-1.12.0/