Merge pull request #189 from Sims24/master

++Add NTP offset check https://github.com/centreon/centreon-plugins/issues/81

apps/protocols/ntp/mode/offset.pm

@@ -0,0 +1,129 @@
+#
+# Copyright 2015 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package apps::protocols::ntp::mode::offset;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+use Net::NTP;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments =>
+         {
+         "ntp-host:s"   => { name => 'ntp_host' },
+         "port:s"       => { name => 'port', default => 123 },
+         "warning:s"    => { name => 'warning' },
+         "critical:s"   => { name => 'critical' },
+         "timeout:s"    => { name => 'timeout', default => 30 },
+         });
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::init(%options);
+
+    if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
+        $self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{option_results}->{warning} . "'.");
+        $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
+        $self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{option_results}->{critical} . "'.");
+        $self->{output}->option_exit();
+    }
+    if (!defined($self->{option_results}->{ntp_host})) {
+        $self->{output}->add_option_msg(short_msg => "Please set the ntp_host option");
+        $self->{output}->option_exit();
+    }
+}
+
+sub run {
+    my ($self, %options) = @_;
+    
+    my %ntp;
+    eval {
+        $Net::NTP::TIMEOUT = $self->{option_results}->{timeout};
+        %ntp = get_ntp_response($self->{option_results}->{ntp_host}, $self->{option_results}->{port});
+    };
+    if ($@) {
+        $self->{output}->output_add(severity => 'CRITICAL',
+                                    short_msg => "Couldn't connect to ntp server: " . $@);
+        $self->{output}->display();
+        $self->{output}->exit();
+    }
+    
+    my $localtime = time();
+    my $offset = ($ntp{'Receive Timestamp'} - $ntp{'Originate Timestamp'}) + ($ntp{'Transmit Timestamp'} - $localtime) / 2);    
+
+    my $exit = $self->{perfdata}->threshold_check(value => $offset,
+                                                  threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
+    $self->{output}->output_add(severity => $exit,
+                                short_msg => sprintf("Offset: %.3fs", $offset));
+    $self->{output}->output_add(long_msg => sprintf("Host has an offset of %.5fs with its time server reference %s", $offset, $self->{option_results}->{ntp_host}));
+
+    $self->{output}->perfdata_add(label => "time",
+                                  value => sprintf('%.3f', $offset),
+                                  warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
+                                  critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'));
+
+    $self->{output}->display();
+    $self->{output}->exit();
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check Ntp server response.
+
+=over 8
+
+=item B<--ntp_host>
+
+Ntp server address or FQDN
+
+=item B<--port>
+
+Port used (Default: 123)
+
+=item B<--timeout>
+
+Threshold for NTP timeout
+
+=item B<--warning>
+
+Threshold warning in seconds
+
+=item B<--critical>
+
+Threshold critical in seconds (e.g @10:10 means CRITICAL if offset is not between -10 and +10 seconds)
+
+=back
+
+=cut

apps/protocols/ntp/plugin.pm

@@ -33,6 +33,7 @@ sub new {
 	$self->{version} = '0.1';
 	%{$self->{modes}} = (
                           'response-time'	=> 'apps::protocols::ntp::mode::responsetime',
+                          'offset'		=> 'apps::protocols::ntp::mode::offset',
                         );
 
 	return $self;