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#!/usr/bin/perl -w
# Munin plugin for monitoring slapd. Based on Bjorn Ruberg's slapd_
# plugin. The main difference is that in our case munin SASL-binds
# against the LDAP directory, and a single connection is used to collect
# all statistics.
# Copyright Bjorn Ruberg <bjorn@ruberg.no>
# Copyright © 2015 Guilhem Moulin <guilhem@fripost.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use warnings;
use strict;
use Net::LDAP ();
use Net::LDAP::Util ();
use Authen::SASL ();
# The possible measurements
my %OPS =
('statistics_bytes'
=> {
'search' => "cn=Bytes,cn=Statistics",
'desc' => "The number of bytes sent by the LDAP server.",
'vlabel' => 'Bytes per ${graph_period}',
'label' => 'Bytes',
'title' => "Number of bytes sent",
'info' => "The graph shows the number of bytes sent",
'scope' => "base"
},
'statistics_pdu'
=> {
'search' => "cn=PDU,cn=Statistics",
'desc' => "The number of PDUs sent by the LDAP server.",
'vlabel' => 'PDUs per ${graph_period}',
'label' => 'PDUs',
'title' => "Number of PDUs sent",
'info' => "The graph shows the number of PDUs sent",
'scope' => "base"
},
# Referrals
'statistics_referrals'
=> {
'search' => "cn=Referrals,cn=Statistics",
'desc' => "The number of Referrals sent by the LDAP server.",
'vlabel' => 'Referrals per ${graph_period}',
'label' => 'Referrals',
'title' => "Number of LDAP Referrals",
'info' => "The graph shows the number of referrals sent",
'scope' => "base"
},
# Entries
'statistics_entries'
=> {
'search' => "cn=Entries,cn=Statistics",
'desc' => "The number of Entries sent by the LDAP server.",
'vlabel' => 'Entries per ${graph_period}',
'label' => 'Entries',
'title' => "Number of LDAP Entries",
'info' => "The graph shows the number of entries sent",
'scope' => "base"
},
# Only read Total
'connections'
=> {
'search' => 'cn=Total,cn=Connections',
'desc' => 'The number of connections',
'label' => 'Connections',
'vlabel' => 'Connections per ${graph_period}',
'title' => 'Number of Connections',
'info' => 'Number of connections to the LDAP server',
'scope' => "base"
},
# dn: cn=Write,cn=Waiters,cn=Monitor
# dn: cn=Read,cn=Waiters,cn=Monitor
'waiters'
=> {
'search' => 'cn=Waiters',
'filter' => '(|(cn=Write)(cn=Read))',
'desc' => "The current number of Waiters",
'label2' => {'write' => 'Write',
'read' => 'Read'},
'vlabel' => "Waiters",
'title' => "Number of Waiters",
'info' => "The graph shows the number of Waiters"
},
'operations'
=> {
'search' => "cn=Operations",
'desc' => "Operations",
'vlabel' => 'Operations per ${graph_period}',
'label' => 'Operations',
'title' => "Operations",
'info' => "Number of completed LDAP operations"
},
'operations_diff'
=> {
'search' => "cn=Operations",
'desc' => "Operations deviance",
'vlabel' => 'Deviance',
'label' => 'Deviance',
'title' => "Operations deviance",
'info' => "Deviance between Initiated and Completed ops"
}
);
my $ldap = Net::LDAP::->new( 'ldapi://' );
my $sasl = Authen::SASL::->new( mechanism => 'EXTERNAL' );
my $mesg = $ldap->bind( undef, sasl => $sasl );
die "LDAP error code $mesg->code: $mesg->error\n",
Net::LDAP::Util::ldap_error_text($mesg), "\n"
if $mesg->code;
my $basedn = 'cn=Monitor';
if (@ARGV and $ARGV[0] eq 'config') {
foreach my $action (keys %OPS) {
print "multigraph slapd2_$action\n";
print "graph_title $OPS{$action}->{title}\n";
print "graph_info $OPS{$action}->{info}\n";
print "graph_vlabel $OPS{$action}->{vlabel}\n";
print "graph_args --base 1000 -l 0\n";
print "graph_scale no\n";
print "graph_category OpenLDAP\n";
if ($OPS{$action}->{label2}) {
foreach my $key (keys %{$OPS{$action}->{label2}}) {
my $name = $action . "_" . $key;
print "$name.label $OPS{$action}->{label2}->{$key}\n";
print "$name.type GAUGE\n";
}
} elsif ($action =~ /^operations(?:_diff)?$/) {
my $mesg = $ldap->search ( base => "$OPS{$action}->{search},$basedn"
, scope => 'one'
, deref => 'never'
, filter => '(objectclass=*)'
, attrs => [ 'monitorOpInitiated'
, 'monitorOpCompleted'
, 'cn' ]
);
die "LDAP error code $mesg->code: $mesg->error\n",
Net::LDAP::Util::ldap_error_text($mesg), "\n"
if $mesg->code;
while (my $e = $mesg->pop_entry) {
my $cn = $e->get_value('cn');
my $name = $action .'_'. lc $cn;
print "$name.label $cn\n";
print "$name.type DERIVE\n";
print "$name.min 0\n";
if ($action eq "operations") {
print "$name.info The number of $cn operations\n";
} else {
print "$name.info The difference between Initiated ";
print "and Completed operations (should be 0)\n";
print "$name.warning 1\n";
}
}
} else {
print "$action.label $OPS{$action}->{label}\n";
print "$action.type DERIVE\n";
print "$action.min 0\n";
}
}
}
else {
foreach my $action (keys %OPS) {
my $searchdn = "$OPS{$action}->{search},$basedn";
my @searchattrs;
if ($action =~ /^operations(_diff)?$/) {
# We look for different parameters in Operations branch
@searchattrs = ('monitorOpInitiated', 'monitorOpCompleted', 'cn');
} else {
@searchattrs = ('monitorCounter', 'cn');
}
my $mesg = $ldap->search ( base => "$OPS{$action}->{search},$basedn"
, scope => $OPS{$action}->{scope} // 'one'
, deref => 'never'
, filter => $OPS{$action}->{filter} // '(objectclass=*)'
, attrs => \@searchattrs
);
die "LDAP error code $mesg->code: $mesg->error\n",
Net::LDAP::Util::ldap_error_text($mesg), "\n"
if $mesg->code;
print "multigraph slapd2_$action\n";
while (my $e = $mesg->pop_entry) {
my $cn = $e->get_value('cn');
if ($action =~ /operations(_diff)?$/) {
if ($1) {
my $opsInit = $e->get_value('monitorOpInitiated');
my $opsComp = $e->get_value('monitorOpCompleted');
printf "operations_diff_%s.value %d\n", lc $cn, ($opsInit - $opsComp);
} else {
printf "operations_%s.value %d\n", lc $cn, $e->get_value('monitorOpCompleted');
}
} else {
# Hotfix, must do for now
printf "%s.value %d\n",
(($action =~ /_/ or $action eq 'connections') ? lc $action : lc "${action}_${cn}"),
$e->get_value('monitorCounter');
}
}
}
}
#$mesg = $ldap->search( base => 'cn=Monitor'
# , scope => 'base'
# , deref => 'never'
# , attrs =>
$ldap->unbind();
#$mesg =
# $ldap->search (
# base => $searchdn,
# scope => $scope,
# filter => $filter,
# attrs => $searchattrs,
# );
#
#$mesg->code && die $mesg->error;
#
#my $max = $mesg->count;
#
#for (my $i = 0 ; $i < $max ; $i++) {
# my $entry = $mesg->entry ($i);
# my $cn = $entry->get_value('cn');
# if ($action =~ /operations(_diff)?$/) {
# if ($1) {
# my $opsInit =
# $entry->get_value('monitorOpInitiated');
# my $opsComp =
# $entry->get_value('monitorOpCompleted');
# print lc ("operations_diff_${cn}.value ");
# print ($opsInit - $opsComp);
# print "\n";
# } else {
# print lc ("operations_${cn}.value ");
# print $entry->get_value('monitorOpCompleted'),
# "\n";
# }
# } else {
# # Hotfix, must do for now
# if ($action =~ /_/ || $action eq 'connections') {
# print lc ("${action}.value ");
# } else {
# print lc ("${action}_${cn}.value ");
# }
# print $entry->get_value('monitorCounter'), "\n";
# }
#}
#$ldap->unbind;
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