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enh snmp_standard diskusage mode (#1233)

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* enh snmp_standard diskusage mode

* fix helper

* add option in helper
This commit is contained in:
Colin Gagnaire 2018-11-21 10:48:19 +01:00 committed by GitHub
parent f70e29f4bc
commit 3c72e86988
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1 changed files with 200 additions and 133 deletions
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333
snmp_standard/mode/diskusage.pm
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@ -20,17 +20,132 @@
package snmp_standard::mode::diskusage;
use base qw(centreon::plugins::mode);
use base qw(centreon::plugins::templates::counter);
use strict;
use warnings;
use centreon::plugins::statefile;
use Digest::MD5 qw(md5_hex);
my $oid_dskPath = '.1.3.6.1.4.1.2021.9.1.2';
my $oid_dskTotalLow = '.1.3.6.1.4.1.2021.9.1.11'; # in kB
my $oid_dskTotalHigh = '.1.3.6.1.4.1.2021.9.1.12'; # in kB
my $oid_dskUsedLow = '.1.3.6.1.4.1.2021.9.1.15'; # in kB
my $oid_dskUsedHigh = '.1.3.6.1.4.1.2021.9.1.16'; # in kB
my $instance_mode;
sub custom_usage_perfdata {
my ($self, %options) = @_;
my $label = 'used';
my $value_perf = $self->{result_values}->{used};
if (defined($instance_mode->{option_results}->{free})) {
$label = 'free';
$value_perf = $self->{result_values}->{free};
}
my $extra_label = '';
$extra_label = '_' . $self->{result_values}->{display} if (!defined($options{extra_instance}) || $options{extra_instance} != 0);
my %total_options = ();
if ($instance_mode->{option_results}->{units} eq '%') {
$total_options{total} = $self->{result_values}->{total};
$total_options{cast_int} = 1;
}
$self->{output}->perfdata_add(label => $label . $extra_label, unit => 'B',
value => $value_perf,
warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{label}, %total_options),
critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $self->{label}, %total_options),
min => 0, max => $self->{result_values}->{total});
}
sub custom_usage_threshold {
my ($self, %options) = @_;
my ($exit, $threshold_value);
$threshold_value = $self->{result_values}->{used};
$threshold_value = $self->{result_values}->{free} if (defined($instance_mode->{option_results}->{free}));
if ($instance_mode->{option_results}->{units} eq '%') {
$threshold_value = $self->{result_values}->{prct_used};
$threshold_value = $self->{result_values}->{prct_free} if (defined($instance_mode->{option_results}->{free}));
}
$exit = $self->{perfdata}->threshold_check(value => $threshold_value, threshold => [ { label => 'critical-' . $self->{label}, exit_litteral => 'critical' }, { label => 'warning-'. $self->{label}, exit_litteral => 'warning' } ]);
return $exit;
}
sub custom_usage_output {
my ($self, %options) = @_;
my ($total_size_value, $total_size_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{total});
my ($total_used_value, $total_used_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{used});
my ($total_free_value, $total_free_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{free});
my $msg = sprintf("Usage Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)",
$total_size_value . " " . $total_size_unit,
$total_used_value . " " . $total_used_unit, $self->{result_values}->{prct_used},
$total_free_value . " " . $total_free_unit, $self->{result_values}->{prct_free});
return $msg;
}
sub custom_usage_calc {
my ($self, %options) = @_;
$self->{result_values}->{display} = $options{new_datas}->{$self->{instance} . '_display'};
$self->{result_values}->{total} = $options{new_datas}->{$self->{instance} . '_size'};
my $reserved_value = 0;
if (defined($instance_mode->{option_results}->{space_reservation})) {
$reserved_value = $instance_mode->{option_results}->{space_reservation} * $self->{result_values}->{total} / 100;
}
$self->{result_values}->{used} = $options{new_datas}->{$self->{instance} . '_used'};
$self->{result_values}->{free} = $self->{result_values}->{total} - $self->{result_values}->{used} - $reserved_value;
$self->{result_values}->{prct_used} = $self->{result_values}->{used} * 100 / ($self->{result_values}->{total} - $reserved_value);
$self->{result_values}->{prct_free} = 100 - $self->{result_values}->{prct_used};
# limit to 100. Better output.
if ($self->{result_values}->{prct_used} > 100) {
$self->{result_values}->{free} = 0;
$self->{result_values}->{prct_used} = 100;
$self->{result_values}->{prct_free} = 0;
}
return 0;
}
sub set_counters {
my ($self, %options) = @_;
$self->{maps_counters_type} = [
{ name => 'global', type => 0, cb_init => 'skip_global' },
{ name => 'diskpath', type => 1, cb_prefix_output => 'prefix_diskpath_output', message_multiple => 'All partitions are ok' },
];
$self->{maps_counters}->{global} = [
{ label => 'count', set => {
key_values => [ { name => 'count' } ],
output_template => 'Partitions count : %d',
perfdatas => [
{ label => 'count', value => 'count_absolute', template => '%d', min => 0 },
],
}
},
];
$self->{maps_counters}->{diskpath} = [
{ label => 'usage', set => {
key_values => [ { name => 'display' }, { name => 'used' }, { name => 'size' } ],
closure_custom_calc => $self->can('custom_usage_calc'),
closure_custom_output => $self->can('custom_usage_output'),
closure_custom_perfdata => $self->can('custom_usage_perfdata'),
closure_custom_threshold_check => $self->can('custom_usage_threshold'),
}
},
];
}
sub skip_global {
my ($self, %options) = @_;
scalar(keys %{$self->{diskpath}}) > 1 ? return(0) : return(1);
}
sub prefix_diskpath_output {
my ($self, %options) = @_;
return "Partition '" . $options{instance_value}->{display} . "' ";
}
sub new {
my ($class, %options) = @_;
@ -40,17 +155,18 @@ sub new {
$self->{version} = '1.0';
$options{options}->add_options(arguments =>
{
"warning:s" => { name => 'warning' },
"critical:s" => { name => 'critical' },
"units:s" => { name => 'units', default => '%' },
"free" => { name => 'free' },
"reload-cache-time:s" => { name => 'reload_cache_time', default => 180 },
"diskpath:s" => { name => 'diskpath' },
"name" => { name => 'use_name' },
"diskpath:s" => { name => 'diskpath' },
"regexp" => { name => 'use_regexp' },
"regexp-isensitive" => { name => 'use_regexpi' },
"space-reservation:s" => { name => 'space_reservation' },
"display-transform-src:s" => { name => 'display_transform_src' },
"display-transform-dst:s" => { name => 'display_transform_dst' },
"show-cache" => { name => 'show_cache' },
"space-reservation:s" => { name => 'space_reservation' },
"filter-counters:s" => { name => 'filter_counters', default => 'usage' },
});
$self->{diskpath_id_selected} = [];
@ -61,127 +177,82 @@ sub new {
sub check_options {
my ($self, %options) = @_;
$self->SUPER::init(%options);
$self->SUPER::check_options(%options);
if (($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}->{space_reservation}) &&
($self->{option_results}->{space_reservation} < 0 || $self->{option_results}->{space_reservation} > 100)) {
$self->{output}->add_option_msg(short_msg => "Space reservation argument must be between 0 and 100 percent.");
$self->{output}->option_exit();
$self->{output}->add_option_msg(short_msg => "Space reservation argument must be between 0 and 100 percent.");
$self->{output}->option_exit();
}
$self->{statefile_cache}->check_options(%options);
$instance_mode = $self;
}
sub run {
sub manage_selection {
my ($self, %options) = @_;
$self->{snmp} = $options{snmp};
$self->{snmp_port} = $self->{snmp}->get_port();
$self->{hostname} = $self->{snmp}->get_hostname();
$self->get_selection();
my $oid_dskTotalLow = '.1.3.6.1.4.1.2021.9.1.11'; # in kB
my $oid_dskTotalHigh = '.1.3.6.1.4.1.2021.9.1.12'; # in kB
my $oid_dskUsedLow = '.1.3.6.1.4.1.2021.9.1.15'; # in kB
my $oid_dskUsedHigh = '.1.3.6.1.4.1.2021.9.1.16'; # in kB
$self->manage_selection();
$self->{snmp}->load(oids => [$oid_dskTotalLow, $oid_dskTotalHigh,
$oid_dskUsedLow, $oid_dskUsedHigh], instances => $self->{diskpath_id_selected});
my $result = $self->{snmp}->get_leef(nothing_quit => 1);
my $num_disk_check = 0;
$self->{snmp}->load(oids => [$oid_dskTotalLow, $oid_dskTotalHigh, $oid_dskUsedLow, $oid_dskUsedHigh],
instances => $self->{diskpath_id_selected}, nothing_quit => 1);
my $result = $self->{snmp}->get_leef();
$self->{global}->{count} = 0;
$self->{diskpath} = {};
foreach (sort @{$self->{diskpath_id_selected}}) {
my $name_diskpath = $self->get_display_value(id => $_);
my $total_size = (($result->{$oid_dskTotalHigh . "." . $_} << 32) + $result->{$oid_dskTotalLow . "." . $_}) * 1024;
if (defined($self->{option_results}->{space_reservation})) {
$total_size = $total_size - ($self->{option_results}->{space_reservation} * $total_size / 100);
if (!defined($result->{$oid_dskTotalHigh . "." . $_})) {
$self->{output}->add_option_msg(long_msg => sprintf("Skipping partition '%s': not found (need to reload the cache)",
$name_diskpath));
next;
}
my $total_size = (($result->{$oid_dskTotalHigh . "." . $_} << 32) + $result->{$oid_dskTotalLow . "." . $_}) * 1024;
if ($total_size == 0) {
$self->{output}->output_add(long_msg => sprintf("Skipping partition '%s' (total size is 0)", $name_diskpath));
next;
}
$num_disk_check++;
my $total_used = (($result->{$oid_dskUsedHigh . "." . $_} << 32) + $result->{$oid_dskUsedLow . "." . $_}) * 1024;
my $total_free = $total_size - $total_used;
my $prct_used = $total_used * 100 / $total_size;
my $prct_free = 100 - $prct_used;
my ($exit, $threshold_value);
$threshold_value = $total_used;
$threshold_value = $total_free if (defined($self->{option_results}->{free}));
if ($self->{option_results}->{units} eq '%') {
$threshold_value = $prct_used;
$threshold_value = $prct_free if (defined($self->{option_results}->{free}));
}
$exit = $self->{perfdata}->threshold_check(value => $threshold_value, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
my ($total_size_value, $total_size_unit) = $self->{perfdata}->change_bytes(value => $total_size);
my ($total_used_value, $total_used_unit) = $self->{perfdata}->change_bytes(value => $total_used);
my ($total_free_value, $total_free_unit) = $self->{perfdata}->change_bytes(value => ($total_size - $total_used));
$self->{output}->output_add(long_msg => sprintf("Partition '%s' Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)", $name_diskpath,
$total_size_value . " " . $total_size_unit,
$total_used_value . " " . $total_used_unit, $prct_used,
$total_free_value . " " . $total_free_unit, $prct_free));
if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1) || (defined($self->{option_results}->{diskpath}) && !defined($self->{option_results}->{use_regexp}))) {
$self->{output}->output_add(severity => $exit,
short_msg => sprintf("Partition '%s' Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)", $name_diskpath,
$total_size_value . " " . $total_size_unit,
$total_used_value . " " . $total_used_unit, $prct_used,
$total_free_value . " " . $total_free_unit, $prct_free));
}
my $label = 'used';
my $value_perf = $total_used;
if (defined($self->{option_results}->{free})) {
$label = 'free';
$value_perf = $total_free;
}
my $extra_label = '';
$extra_label = '_' . $name_diskpath if (!defined($self->{option_results}->{diskpath}) || defined($self->{option_results}->{use_regexp}));
my %total_options = ();
if ($self->{option_results}->{units} eq '%') {
$total_options{total} = $total_size;
$total_options{cast_int} = 1;
}
$self->{output}->perfdata_add(label => $label . $extra_label, unit => 'B',
value => $value_perf,
warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning', %total_options),
critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical', %total_options),
min => 0, max => $total_size);
}
if (!defined($self->{option_results}->{diskpath}) || defined($self->{option_results}->{use_regexp})) {
$self->{output}->output_add(severity => 'OK',
short_msg => 'All partitions are ok.');
} elsif ($num_disk_check == 0) {
$self->{output}->output_add(severity => 'OK',
short_msg => 'No usage for partition.');
$self->{diskpath}->{$_} = {
display => $name_diskpath,
size => $total_size,
used => $total_used,
};
$self->{global}->{count}++;
}
$self->{output}->display();
$self->{output}->exit();
if (scalar(keys %{$self->{diskpath}}) <= 0) {
$self->{output}->add_option_msg(short_msg => "Issue with disk path information (see details)");
$self->{output}->option_exit();
}
}
sub reload_cache {
my ($self) = @_;
my $datas = {};
my $result = $self->{snmp}->get_table(oid => $oid_dskPath);
$datas->{last_timestamp} = time();
$datas->{all_ids} = [];
my $last_num = 0;
foreach my $key ($self->{snmp}->oid_lex_sort(keys %$result)) {
next if ($key !~ /\.([0-9]+)$/);
push @{$datas->{all_ids}}, $1;
$datas->{'dskPath_' . $1} = $self->{output}->to_utf8($result->{$key});
}
my $oid_dskPath = '.1.3.6.1.4.1.2021.9.1.2';
my $result = $self->{snmp}->get_table(oid => $oid_dskPath);
foreach my $key ($self->{snmp}->oid_lex_sort(keys %{$result})) {
next if ($key !~ /\.([0-9]+)$/);
my $diskpath_index = $1;
push @{$datas->{all_ids}}, $diskpath_index;
$datas->{"dskPath_" . $diskpath_index} = $self->{output}->to_utf8($result->{$key});
}
if (scalar(@{$datas->{all_ids}}) <= 0) {
$self->{output}->add_option_msg(short_msg => "Can't construct cache...");
$self->{output}->option_exit();
@ -190,19 +261,18 @@ sub reload_cache {
$self->{statefile_cache}->write(data => $datas);
}
sub manage_selection {
sub get_selection {
my ($self, %options) = @_;
# init cache file
my $has_cache_file = $self->{statefile_cache}->read(statefile => 'cache_snmpstandard_' . $self->{hostname} . '_' . $self->{snmp_port} . '_' . $self->{mode});
my $has_cache_file = $self->{statefile_cache}->read(statefile => 'cache_snmpstandard_' . $self->{snmp}->get_hostname() . '_' . $self->{snmp}->get_port() . '_' . $self->{mode});
if (defined($self->{option_results}->{show_cache})) {
$self->{output}->add_option_msg(long_msg => $self->{statefile_cache}->get_string_content());
$self->{output}->option_exit();
}
my $timestamp_cache = $self->{statefile_cache}->get(name => 'last_timestamp');
if ($has_cache_file == 0 || !defined($timestamp_cache) ||
((time() - $timestamp_cache) > (($self->{option_results}->{reload_cache_time}) * 60))) {
if ($has_cache_file == 0 || !defined($timestamp_cache) || ((time() - $timestamp_cache) > (($self->{option_results}->{reload_cache_time}) * 60))) {
$self->reload_cache();
$self->{statefile_cache}->read();
}
@ -210,46 +280,39 @@ sub manage_selection {
my $all_ids = $self->{statefile_cache}->get(name => 'all_ids');
if (!defined($self->{option_results}->{use_name}) && defined($self->{option_results}->{diskpath})) {
# get by ID
push @{$self->{diskpath_id_selected}}, $self->{option_results}->{diskpath};
my $name = $self->{statefile_cache}->get(name => 'dskPath_' . $self->{option_results}->{diskpath});
if (!defined($name)) {
$self->{output}->add_option_msg(short_msg => "No disk path found for id '" . $self->{option_results}->{diskpath} . "'.");
$self->{output}->option_exit();
}
my $name = $self->{statefile_cache}->get(name => "dskPath_" . $self->{option_results}->{diskpath});
push @{$self->{diskpath_id_selected}}, $self->{option_results}->{diskpath} if (defined($name));
} else {
foreach my $i (@{$all_ids}) {
my $filter_name = $self->{statefile_cache}->get(name => 'dskPath_' . $i);
my $filter_name = $self->{statefile_cache}->get(name => "dskPath_" . $i);
next if (!defined($filter_name));
if (!defined($self->{option_results}->{diskpath})) {
push @{$self->{diskpath_id_selected}}, $i;
push @{$self->{diskpath_id_selected}}, $i;
next;
}
if (defined($self->{option_results}->{use_regexp}) && defined($self->{option_results}->{use_regexpi}) && $filter_name =~ /$self->{option_results}->{diskpath}/i) {
push @{$self->{diskpath_id_selected}}, $i;
push @{$self->{diskpath_id_selected}}, $i;
}
if (defined($self->{option_results}->{use_regexp}) && !defined($self->{option_results}->{use_regexpi}) && $filter_name =~ /$self->{option_results}->{diskpath}/) {
push @{$self->{diskpath_id_selected}}, $i;
push @{$self->{diskpath_id_selected}}, $i;
}
if (!defined($self->{option_results}->{use_regexp}) && !defined($self->{option_results}->{use_regexpi}) && $filter_name eq $self->{option_results}->{diskpath}) {
push @{$self->{diskpath_id_selected}}, $i;
push @{$self->{diskpath_id_selected}}, $i;
}
}
if (scalar(@{$self->{diskpath_id_selected}}) <= 0) {
if (defined($self->{option_results}->{diskpath})) {
$self->{output}->add_option_msg(short_msg => "No disk path found for name '" . $self->{option_results}->{diskpath} . "' (maybe you should reload cache file).");
} else {
$self->{output}->add_option_msg(short_msg => "No disk path found (maybe you should reload cache file).");
}
$self->{output}->option_exit();
}
}
if (scalar(@{$self->{diskpath_id_selected}}) <= 0) {
$self->{output}->add_option_msg(short_msg => "No disk path found. Can be: filters, cache file.");
$self->{output}->option_exit();
}
}
sub get_display_value {
my ($self, %options) = @_;
my $value = $self->{statefile_cache}->get(name => 'dskPath_' . $options{id});
my $value = $self->{statefile_cache}->get(name => "dskPath_" . $options{id});
if (defined($self->{option_results}->{display_transform_src})) {
$self->{option_results}->{display_transform_dst} = '' if (!defined($self->{option_results}->{display_transform_dst}));
eval "\$value =~ s{$self->{option_results}->{display_transform_src}}{$self->{option_results}->{display_transform_dst}}";
@ -268,13 +331,17 @@ Need to enable "includeAllDisks 10%" on snmpd.conf.
=over 8
=item B<--warning>
=item B<--filter-counters>
Threshold warning.
Filter counters to be displayed (Default: 'usage', Can be: 'usage', 'count').
=item B<--critical>
=item B<--warning-*>
Threshold critical.
Threshold warning (Can be: 'usage', 'count').
=item B<--critical-*>
Threshold warning (Can be: 'usage', 'count').
=item B<--units>
@ -286,7 +353,7 @@ Thresholds are on free space left.
=item B<--diskpath>
Set the disk path (number expected) ex: 1, 2,... (empty means 'check all disks path').
Set the disk path (number expected) ex: 1, 2,... (empty means 'check all disk path').
=item B<--name>
@ -294,7 +361,7 @@ Allows to use disk path name with option --diskpath instead of disk path oid ind
=item B<--regexp>
Allows to use regexp to filter diskpath (with option --name).
Allows to use regexp to filter disk path (with option --name).
=item B<--regexp-isensitive>
@ -314,12 +381,12 @@ Regexp dst to transform display value. (security risk!!!)
=item B<--show-cache>
Display cache storage datas.
Display cache disk path datas.
=item B<--space-reservation>
Some filesystem has space reserved (like ext4 for root).
The value is in percent of total (Default: none).
The value is in percent of total (Default: none) (results like 'df' command).
=back