check_elasticsearch_doc_count.pl

#!/usr/bin/perl -T
# nagios: -epn
#
#  Author: Hari Sekhon
#  Date: 2015-03-21 16:53:17 +0000 (Sat, 21 Mar 2015)
#
#  https://github.com/harisekhon/nagios-plugins
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  vim:ts=4:sts=4:sw=4:et

$DESCRIPTION = "Nagios Plugin to check the number of docs in an Elasticsearch cluster or for a given index

Optional --warning/--critical threshold ranges may be applied to the number of docs

Tested on Elasticsearch 1.2.1, 1.4.0, 1.4.4, 1.4.5, 1.5.2, 1.6.2, 1.7.5, 2.0.2, 2.2.2, 2.3.3";

$VERSION = "0.1";

use strict;
use warnings;
BEGIN {
    use File::Basename;
    use lib dirname(__FILE__) . "/lib";
}
use HariSekhonUtils;
use HariSekhon::Elasticsearch;

$ua->agent("Hari Sekhon $progname version $main::VERSION");

%options = (
    %hostoptions,
    %elasticsearch_index,
    %thresholdoptions,
);

get_options();

$host  = validate_host($host);
$port  = validate_port($port);
$index = validate_elasticsearch_index($index) if $index;
validate_thresholds(0, 0);

vlog2;
set_timeout();

$status = "OK";

list_elasticsearch_indices();

my $url = "/_cat/count";
$url .= "/$index" if $index;
my $content = curl_elasticsearch_raw $url;

my @parts = split(/\s+/, $content);
defined($parts[2]) or quit "UNKNOWN", "failed to parse result. $nagios_plugins_support_msg_api";
isInt($parts[2]) or quit "UNKNOWN", "returned non-integer value for doc count. $nagios_plugins_support_msg_api";
my $docs = $parts[2];

$msg = "elasticsearch ";
if($index){
    $msg .= "index '$index'"
} else {
    $msg .= "cluster";
}
$msg .= " docs=$docs";
check_thresholds($docs);

$msg .= " | docs=$docs";
msg_perf_thresholds();

quit $status, $msg;