From 582996cbcb6ddd7a2d8721377e8d5c0cc0b987c5 Mon Sep 17 00:00:00 2001
From: UrBnW <40244829+UrBnW@users.noreply.github.com>
Date: Fri, 20 Nov 2020 15:29:21 +0100
Subject: [PATCH] enh(Mikrotik) various enhancements (#2319)

---
 .../mikrotik/snmp/mode/components/current.pm  | 15 +--
 network/mikrotik/snmp/mode/components/fan.pm  | 44 +++++----
 .../snmp/mode/components/{psu.pm => power.pm} | 60 +++---------
 .../mikrotik/snmp/mode/components/status.pm   | 91 +++++++++++++++++++
 .../snmp/mode/components/temperature.pm       | 35 +++----
 .../mikrotik/snmp/mode/components/voltage.pm  | 15 +--
 network/mikrotik/snmp/mode/environment.pm     | 30 +++---
 7 files changed, 171 insertions(+), 119 deletions(-)
 rename network/mikrotik/snmp/mode/components/{psu.pm => power.pm} (53%)
 create mode 100644 network/mikrotik/snmp/mode/components/status.pm

diff --git a/network/mikrotik/snmp/mode/components/current.pm b/network/mikrotik/snmp/mode/components/current.pm
index 19c257016..8c1d043bc 100644
--- a/network/mikrotik/snmp/mode/components/current.pm
+++ b/network/mikrotik/snmp/mode/components/current.pm
@@ -41,7 +41,7 @@ sub check_current {
         )
     );
 
-    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'current', instance => $options{instance}, value => $options{value});
+    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'current', instance => $options{name}, value => $options{value});
     if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
         $self->{output}->output_add(
             severity => $exit,
@@ -66,28 +66,23 @@ sub check {
     $self->{components}->{current} = { name => 'current', total => 0, skip => 0 };
     return if ($self->check_filter(section => 'current'));
 
-    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
-
-    my $gauge_ok = 0;
     foreach (keys %{$self->{results}}) {
         next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
         next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'dA');
-
-        $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'current', instance => $result->{name}));
         check_current(
             $self,
             value => $result->{value} / 10,
-            instance => $1,
             name => $result->{name}
         );
-        $gauge_ok = 1;
     }
 
-    if ($gauge_ok == 0 && defined($result->{mtxrHlCurrent}) && $result->{mtxrHlCurrent} =~ /[0-9]+/) {
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlCurrent}) && ! $self->check_filter(section => 'current', instance => 'system')) {
         check_current(
             $self,
             value => $result->{mtxrHlCurrent} / 1000,
-            instance => 1,
             name => 'system'
         );
     }
diff --git a/network/mikrotik/snmp/mode/components/fan.pm b/network/mikrotik/snmp/mode/components/fan.pm
index 233a9b7db..cc2ba4e5c 100644
--- a/network/mikrotik/snmp/mode/components/fan.pm
+++ b/network/mikrotik/snmp/mode/components/fan.pm
@@ -36,22 +36,23 @@ sub check_fan {
 
     $self->{output}->output_add(
         long_msg => sprintf(
-            "fan '%s' speed is '%s' RPM",
-            $options{instance},
+            "fan '%s' is %s RPM",
+            $options{name},
             $options{value}
         )
     );
-    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'fan', instance => $options{instance}, value => $options{value});
+
+    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'fan', instance => $options{name}, value => $options{value});
     if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
         $self->{output}->output_add(
             severity => $exit,
-            short_msg => sprintf("Fan '%s' speed is '%s' RPM", $options{instance}, $options{value})
+            short_msg => sprintf("Fan '%s' is %s RPM", $options{name}, $options{value})
         );
     }
     $self->{output}->perfdata_add(
         nlabel => 'hardware.fan.speed.rpm',
         unit => 'rpm',
-        instances => $options{instance},
+        instances => $options{name},
         value => $options{value},
         warning => $warn,
         critical => $crit
@@ -62,27 +63,36 @@ sub check_fan {
 sub check {
     my ($self) = @_;
 
-    $self->{output}->output_add(long_msg => "Checking fans");
+    $self->{output}->output_add(long_msg => "Checking fan");
     $self->{components}->{fan} = { name => 'fans', total => 0, skip => 0 };
     return if ($self->check_filter(section => 'fan'));
 
-    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
-
-    my $gauge_ok = 0;
     foreach (keys %{$self->{results}}) {
         next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
         next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'rpm');
-
-        $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
-        check_fan($self, value => $result->{value}, instance => $result->{name});
-        $gauge_ok = 1;
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'fan', instance => $result->{name}));
+        check_fan(
+            $self,
+            value => $result->{value},
+            name => $result->{name}
+        );
     }
 
-    if ($gauge_ok == 0 && defined($result->{mtxrHlFanSpeed1}) && $result->{mtxrHlFanSpeed1} =~ /[0-9]+/) {
-        check_fan($self, value => $result->{mtxrHlFanSpeed1}, instance => 1);
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlFanSpeed1}) && ! $self->check_filter(section => 'fan', instance => 'fan1')) {
+        check_fan(
+            $self,
+            value => $result->{mtxrHlFanSpeed1},
+            name => 'fan1'
+        );
     }
-    if ($gauge_ok == 0 && defined($result->{mtxrHlFanSpeed2}) && $result->{mtxrHlFanSpeed2} =~ /[0-9]+/) {
-        check_fan($self, value => $result->{mtxrHlFanSpeed2}, instance => 2);
+    if (defined($result->{mtxrHlFanSpeed2}) && ! $self->check_filter(section => 'fan', instance => 'fan2')) {
+        check_fan(
+            $self,
+            value => $result->{mtxrHlFanSpeed2},
+            name => 'fan2'
+        );
     }
 }
 
diff --git a/network/mikrotik/snmp/mode/components/psu.pm b/network/mikrotik/snmp/mode/components/power.pm
similarity index 53%
rename from network/mikrotik/snmp/mode/components/psu.pm
rename to network/mikrotik/snmp/mode/components/power.pm
index 9aefced99..d1ef34555 100644
--- a/network/mikrotik/snmp/mode/components/psu.pm
+++ b/network/mikrotik/snmp/mode/components/power.pm
@@ -18,45 +18,19 @@
 # limitations under the License.
 #
 
-package network::mikrotik::snmp::mode::components::psu;
+package network::mikrotik::snmp::mode::components::power;
 
 use strict;
 use warnings;
 use network::mikrotik::snmp::mode::components::resources qw($map_gauge_unit $mapping_gauge);
 
-my $map_status = { 0 => 'false', 1 => 'true' };
-
 my $mapping = {
-    mtxrHlPower                  => { oid => '.1.3.6.1.4.1.14988.1.1.3.12' },
-    mtxrHlPowerSupplyState       => { oid => '.1.3.6.1.4.1.14988.1.1.3.15', map => $map_status },
-    mtxrHlBackupPowerSupplyState => { oid => '.1.3.6.1.4.1.14988.1.1.3.16', map => $map_status }
+    mtxrHlPower => { oid => '.1.3.6.1.4.1.14988.1.1.3.12' }
 };
 
+
 sub load {}
 
-sub check_psu {
-    my ($self, %options) = @_;
-
-    return if (!defined($options{value}));
-
-    $self->{output}->output_add(
-        long_msg => sprintf(
-            "psu %s status is '%s'",
-            $options{type}, $options{value}, 
-        )
-    );
-
-    my $exit = $self->get_severity(section => 'psu.' . $options{type}, value => $options{value});
-    if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
-        $self->{output}->output_add(
-            severity => $exit,
-            short_msg => sprintf("psu %s status is '%s'", $options{type}, $options{value})
-        );
-    }
-    
-    $self->{components}->{psu}->{total}++;
-}
-
 sub check_power {
     my ($self, %options) = @_;
 
@@ -68,7 +42,7 @@ sub check_power {
         )
     );
 
-    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'psu', instance => $options{instance}, value => $options{value});
+    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'power', instance => $options{name}, value => $options{value});
     if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
         $self->{output}->output_add(
             severity => $exit,
@@ -83,41 +57,33 @@ sub check_power {
         warning => $warn,
         critical => $crit
     );
-    $self->{components}->{psu}->{total}++;
+    $self->{components}->{power}->{total}++;
 }
 
 sub check {
     my ($self) = @_;
 
-    $self->{output}->output_add(long_msg => "Checking power supplies");
-    $self->{components}->{psu} = {name => 'psu', total => 0, skip => 0};
-    return if ($self->check_filter(section => 'psu'));
+    $self->{output}->output_add(long_msg => "Checking power");
+    $self->{components}->{power} = {name => 'power', total => 0, skip => 0};
+    return if ($self->check_filter(section => 'power'));
 
-    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
-    
-    check_psu($self, value => $result->{mtxrHlPowerSupplyState}, type => 'primary');
-    check_psu($self, value => $result->{mtxrHlBackupPowerSupplyState}, type => 'backup');
-
-    my $gauge_ok = 0;
     foreach (keys %{$self->{results}}) {
         next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
         next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'dW');
-
-        $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'power', instance => $result->{name}));
         check_power(
             $self,
             value => $result->{value} / 10,
-            instance => $1,
             name => $result->{name}
         );
-        $gauge_ok = 1;
     }
 
-    if ($gauge_ok == 0 && defined($result->{mtxrHlPower}) && $result->{mtxrHlPower} =~ /[0-9]+/) {
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlpower}) && ! $self->check_filter(section => 'power', instance => 'system')) {
         check_power(
             $self,
-            value => $result->{mtxrHlPower} / 10,
-            instance => 1,
+            value => $result->{mtxrHlpower} / 10,
             name => 'system'
         );
     }
diff --git a/network/mikrotik/snmp/mode/components/status.pm b/network/mikrotik/snmp/mode/components/status.pm
new file mode 100644
index 000000000..e9e753993
--- /dev/null
+++ b/network/mikrotik/snmp/mode/components/status.pm
@@ -0,0 +1,91 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package network::mikrotik::snmp::mode::components::status;
+
+use strict;
+use warnings;
+use network::mikrotik::snmp::mode::components::resources qw($map_gauge_unit $mapping_gauge);
+
+my $mapping = {
+    mtxrHlPowerSupplyState       => { oid => '.1.3.6.1.4.1.14988.1.1.3.15' },
+    mtxrHlBackupPowerSupplyState => { oid => '.1.3.6.1.4.1.14988.1.1.3.16' }
+};
+
+sub load {}
+
+sub check_status {
+    my ($self, %options) = @_;
+
+    $self->{output}->output_add(
+        long_msg => sprintf(
+            "status '%s' is %s",
+            $options{name},
+            $options{value}
+        )
+    );
+
+    my $exit = $self->get_severity(section => 'status', value => $options{value});
+    if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
+        $self->{output}->output_add(
+            severity => $exit,
+            short_msg => sprintf("Status '%s' is %s", $options{name}, $options{value})
+        );
+    }
+    $self->{components}->{status}->{total}++;
+}
+
+sub check {
+    my ($self) = @_;
+
+    $self->{output}->output_add(long_msg => "Checking status");
+    $self->{components}->{status} = {name => 'status', total => 0, skip => 0};
+    return if ($self->check_filter(section => 'status'));
+
+    foreach (keys %{$self->{results}}) {
+        next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
+        next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'status');
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'status', instance => $result->{name}));
+        check_status(
+            $self,
+            value => $result->{value} == 0 ? 'ok' : 'not ok',
+            name => $result->{name}
+        );
+    }
+
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlPowerSupplyState}) && ! $self->check_filter(section => 'status', instance => 'psu-primary')) {
+        check_status(
+            $self,
+            value => $result->{mtxrHlPowerSupplyState} == 1 ? 'ok' : 'not ok',
+            name => 'psu-primary'
+        );
+    }
+    if (defined($result->{mtxrHlBackupPowerSupplyState}) && ! $self->check_filter(section => 'status', instance => 'psu-backup')) {
+        check_status(
+            $self,
+            value => $result->{mtxrHlBackupPowerSupplyState} == 1 ? 'ok' : 'not ok',
+            name => 'psu-backup'
+        );
+    }
+}
+
+1;
diff --git a/network/mikrotik/snmp/mode/components/temperature.pm b/network/mikrotik/snmp/mode/components/temperature.pm
index 6e2ace0fd..dac846aa9 100644
--- a/network/mikrotik/snmp/mode/components/temperature.pm
+++ b/network/mikrotik/snmp/mode/components/temperature.pm
@@ -36,20 +36,20 @@ sub check_temperature {
 
     $self->{output}->output_add(
         long_msg => sprintf(
-            "%s is %s C",
-            $options{description},
+            "temperature '%s' is %s C",
+            $options{name},
             $options{value}
         )
     );
 
-    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'temperature', instance => $options{instance}, value => $options{value});
-    if ($options{value} == -2730) { # RouterOS returns this when the SNMP agent hangs...
+    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'temperature', instance => $options{name}, value => $options{value});
+    if ($options{value} == -273) { # RouterOS returns this when the SNMP agent hangs...
         $exit = 'UNKNOWN';
     }
     if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
         $self->{output}->output_add(
             severity => $exit,
-            short_msg => sprintf("%s is %s C", $options{instance}, $options{value})
+            short_msg => sprintf("Temperature '%s' is %s C", $options{name}, $options{value})
         );
     }
     $self->{output}->perfdata_add(
@@ -70,40 +70,31 @@ sub check {
     $self->{components}->{temperature} = { name => 'temperature', total => 0, skip => 0 };
     return if ($self->check_filter(section => 'temperature'));
 
-    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
-
-    my $gauge_ok = 0;
     foreach (keys %{$self->{results}}) {
         next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
         next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'celsius');
-
-        $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'temperature', instance => $result->{name}));
         check_temperature(
             $self,
             value => $result->{value},
-            instance => $1,
-            name => $result->{name},
-            description => "sensor temperature '$result->{name}'"
+            name => $result->{name}
         );
-        $gauge_ok = 1;
     }
 
-    if ($gauge_ok == 0 && defined($result->{mtxrHlTemperature}) && $result->{mtxrHlTemperature} =~ /[0-9]+/) {
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlTemperature}) && ! $self->check_filter(section => 'temperature', instance => 'system')) {
         check_temperature(
             $self,
             value => $result->{mtxrHlTemperature} / 10,
-            instance => 1,
-            name => 'system',
-            description => 'system temperature (SoC or PCB)'
+            name => 'system'
         );
     }
-    if ($gauge_ok == 0 && defined($result->{mtxrHlProcessorTemperature}) && $result->{mtxrHlProcessorTemperature} =~ /[0-9]+/) {
+    if (defined($result->{mtxrHlProcessorTemperature}) && ! $self->check_filter(section => 'temperature', instance => 'processor')) {
         check_temperature(
             $self,
             value => $result->{mtxrHlProcessorTemperature} / 10,
-            instance => 2,
-            name => 'processor',
-            description => 'processor temperature'
+            name => 'processor'
         );
     }
 }
diff --git a/network/mikrotik/snmp/mode/components/voltage.pm b/network/mikrotik/snmp/mode/components/voltage.pm
index e41b688de..5487d2ec3 100644
--- a/network/mikrotik/snmp/mode/components/voltage.pm
+++ b/network/mikrotik/snmp/mode/components/voltage.pm
@@ -41,7 +41,7 @@ sub check_voltage {
         )
     );
 
-    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'voltage', instance => $options{instance}, value => $options{value});
+    my ($exit, $warn, $crit, $checked) = $self->get_severity_numeric(section => 'voltage', instance => $options{name}, value => $options{value});
     if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
         $self->{output}->output_add(
             severity => $exit,
@@ -66,28 +66,23 @@ sub check {
     $self->{components}->{voltage} = {name => 'voltage', total => 0, skip => 0};
     return if ($self->check_filter(section => 'voltage'));
 
-    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
-
-    my $gauge_ok = 0;
     foreach (keys %{$self->{results}}) {
         next if (! /^$mapping_gauge->{unit}->{oid}\.(\d+)/);
         next if ($map_gauge_unit->{ $self->{results}->{$_} } ne 'dV');
-
-        $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        my $result = $self->{snmp}->map_instance(mapping => $mapping_gauge, results => $self->{results}, instance => $1);
+        next if ($self->check_filter(section => 'voltage', instance => $result->{name}));
         check_voltage(
             $self,
             value => $result->{value} / 10,
-            instance => $1,
             name => $result->{name}
         );
-        $gauge_ok = 1;
     }
 
-    if ($gauge_ok == 0 && defined($result->{mtxrHlVoltage}) && $result->{mtxrHlVoltage} =~ /[0-9]+/) {
+    my $result = $self->{snmp}->map_instance(mapping => $mapping, results => $self->{results}, instance => 0);
+    if (defined($result->{mtxrHlVoltage}) && ! $self->check_filter(section => 'voltage', instance => 'system')) {
         check_voltage(
             $self,
             value => $result->{mtxrHlVoltage} / 10,
-            instance => 1,
             name => 'system'
         );
     }
diff --git a/network/mikrotik/snmp/mode/environment.pm b/network/mikrotik/snmp/mode/environment.pm
index 643bfe7a2..1ceabe214 100644
--- a/network/mikrotik/snmp/mode/environment.pm
+++ b/network/mikrotik/snmp/mode/environment.pm
@@ -28,28 +28,27 @@ use warnings;
 sub set_system {
     my ($self, %options) = @_;
     
-    $self->{regexp_threshold_numeric_check_section_option} = '^(?:temperature|voltage|fan|current|psu)$';
+    $self->{regexp_threshold_numeric_check_section_option} = '^(?:current|fan|power|temperature|voltage)$';
     
     $self->{cb_hook2} = 'snmp_execute';
      $self->{thresholds} = {
-        'psu.primary' => [
-            ['true', 'OK'],
-            ['false', 'CRITICAL']
-        ],
-        'psu.backup' => [
-            ['true', 'OK'],
-            ['false', 'CRITICAL']
+        'status' => [
+            ['not ok', 'CRITICAL'],
+            ['ok', 'OK']
         ]
     };
 
     $self->{components_path} = 'network::mikrotik::snmp::mode::components';
-    $self->{components_module} = ['current', 'fan', 'psu', 'temperature', 'voltage'];
+    $self->{components_module} = ['current', 'fan', 'power', 'status', 'temperature', 'voltage'];
 }
 
 sub snmp_execute {
     my ($self, %options) = @_;
     
-    my $oid_mtxrHealth = '.1.3.6.1.4.1.14988.1.1.3';
+    my $oid_mtxrHealth = '.1.3.6.1.4.1.14988.1.1.3.100.1';
+    if (defined($self->{option_results}->{legacy})) {
+        $oid_mtxrHealth = '.1.3.6.1.4.1.14988.1.1.3';
+    }
     $self->{snmp} = $options{snmp};
     $self->{results} = $self->{snmp}->get_table(oid => $oid_mtxrHealth);
 }
@@ -60,6 +59,7 @@ sub new {
     bless $self, $class;
     
     $options{options}->add_options(arguments => { 
+        'legacy' => { name => 'legacy' }
     });
 
     return $self;
@@ -75,15 +75,19 @@ Check hardware.
 
 =over 8
 
+=item B<--legacy>
+
+Look for legacy (prior to RouterOS 6.47) OIDs.
+
 =item B<--component>
 
 Which component to check (Default: '.*').
-Can be: 'current', 'fan', 'psu', 'temperature', 'voltage'.
+Can be: 'current', 'fan', 'power', 'status', 'temperature', 'voltage'.
 
 =item B<--filter>
 
 Exclude some parts (comma seperated list) (Example: --filter=fan --filter=voltage)
-Can also exclude specific instance: --filter=fan,1.1
+Can also exclude specific instance: --filter=fan,fan2
 
 =item B<--no-component>
 
@@ -98,7 +102,7 @@ Example: --warning='temperature,.*,40'
 =item B<--critical>
 
 Set critical threshold for 'temperature', 'fan', 'voltage' (syntax: type,regexp,threshold)
-Example: --critical='temperature,.*,50'
+Example: --critical='temperature,cpu,50'
 
 =back