check_ambari_cluster_version.pl

#!/usr/bin/perl -T
# nagios: -epn
#
#  Author: Hari Sekhon
#  Date: 2015-11-26 19:44:32 +0000 (Thu, 26 Nov 2015)
#
#  https://github.com/harisekhon/nagios-plugins
#
#  License: see accompanying LICENSE file
#

$DESCRIPTION = "Nagios Plugin to check an Ambari managed Cluster is on the right HDP version via Ambari REST API

Tested on Ambari 2.1.0, 2.1.2, 2.2.1 on Hortonworks HDP 2.2, 2.3, 2.4";

$VERSION = "0.1";

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

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

my $expected;

%options = (
    %hostoptions,
    %useroptions,
    %ambari_options,
    "e|expected=s" => [ \$expected, "Expected version string (optional). This can be any string since Ambari can technically support any stack, not just HDP. This string must match exactly, eg. 'HDP-2.3', not '2.3' or 'HDP2.3'" ],
);
splice @usage_order, 7, 0, qw/expected/;

get_options();

$host       = validate_host($host);
$port       = validate_port($port);
$user       = validate_user($user);
$password   = validate_password($password);
$cluster    = validate_ambari_cluster($cluster) if $cluster;

validate_tls();

vlog2;
set_timeout();

$status = "OK";

$url_prefix = "$protocol://$host:$port$api";

list_ambari_components();
cluster_required();

$msg = "Ambari cluster '$cluster' version = ";
$json = curl_ambari "$url_prefix/clusters/$cluster?fields=Clusters/version";
my $version = get_field("Clusters.version");
$msg .= "'$version'";
if(defined($expected) and $version ne $expected){
    critical;
    $msg .= " (expected '$expected')";
}

vlog2;
quit $status, $msg;