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-#!/usr/bin/perl
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-# check_sybase
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-# A nagios plugin that connects to a Sybase database and checks free space.
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-#
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-# Copyright 2004-2005 Simon Bellwood, NetMan Network Management and IT
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-# Services GmbH
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-# Portions Copyright 2001 Michael Peppler.
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-# License: GPL
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-#
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-# Bugs and feedback to simon.bellwood@NOSPAM.net-man.at
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-# Latest version available from:
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-# http://www.net-man.at/software/check_sybase-LATEST.zip
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-#
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-# Revision history:
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-# 0.1 01-OCT-2004 Initial version.
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-# 0.2 08-NOV-2004 Initial release.
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-# 0.3 13-JAN-2005 Fixed lib path, improved timeouts.
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-# 0.4 26-JAN-2005 Added loginTimeout.
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-# 0.5 04-FEB-2005 Fixed dates in history. Oops.
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-# 0.6 29-MAR-2005 Added --explain option.
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-# 0.7 08-APR-2005 Added initial performance data support.
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-my $VERSION = "0.7";
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-
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-#use warnings;
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-use strict;
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-use DBI;
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-use Getopt::Long;
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-use lib qw( /usr/lib/nagios/plugins/ /usr/local/nagios/libexec/ );
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-use utils qw(%ERRORS &print_revision &support &usage $TIMEOUT);
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-
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-
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-my $PROGNAME = "check_sybase";
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-my $DEFAULT_CHECKTYPE = "FREESPACE";
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-my $DEFAULT_WARNING = "25";
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-my $DEFAULT_CRITICAL = "10";
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-my $DEFAULT_TIMEOUT = "30";
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-
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-my ($user, $pass, $dbsvr, $dbname, $config, $checktype, $explain,
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- $warn, $crit, $timeout, $help, $version);
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-
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-my $options_okay = GetOptions(
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- "U|user=s" => \$user,
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- "P|pass:s" => \$pass, # ":" means optional
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- "S|dbsvr=s" => \$dbsvr,
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- "D|dbname=s" => \$dbname,
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- "config=s" => \$config,
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- "checktype=s" => \$checktype,
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- "explain" => \$explain,
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- "w|warning=i" => \$warn,
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- "c|critical=i" => \$crit,
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- "t|timeout=i" => \$timeout,
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- "h|help" => \$help,
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- "V|version" => \$version
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-);
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-
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-
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-if (! $options_okay) # Bad option passed
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-{
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- &help;
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- &nunk("Bad command line option passed!");
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-}
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-
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-# Use defaults, if needed
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-$warn = $warn || $DEFAULT_WARNING;
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-$crit = $crit || $DEFAULT_CRITICAL;
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-$checktype = $checktype || $DEFAULT_CHECKTYPE;
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-$timeout = $timeout || $TIMEOUT || $DEFAULT_TIMEOUT;
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-
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-if ($help)
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-{
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- &help;
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- &nok;
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-}
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-
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-if ($version)
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-{
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- print_revision($PROGNAME,"\$Revision$VERSION \$");
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- &nok;
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-}
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-
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-if ($config) # Read any of "user", "pass", "dbsvr", "dbname" from config file
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-{
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- &read_config;
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-}
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-
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-# Some more descriptive syntax checks
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-my $syntax_error;
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-$syntax_error .= "No dbsvr given! " unless $dbsvr;
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-$syntax_error .= "No dbname given! " unless $dbname;
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-$syntax_error .= "No user given! " unless $user;
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-$syntax_error .= "Bad checktype given!"
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- unless $checktype =~ m/^CONNECT|FREESPACE$/;
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-&nunk($syntax_error) if $syntax_error;
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-
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-
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-# Just in case of problems, let's not hang Nagios
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-$SIG{'ALRM'} = sub {
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- &nunk("Timeout: no response from dbsvr $dbsvr within $timeout seconds");
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-};
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-alarm($timeout);
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-
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-
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-# Decide on what we are checking
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-if ($checktype eq "CONNECT")
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-{
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- &connect;
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-}
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-elsif ($checktype eq "FREESPACE")
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-{
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- &check_space;
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-}
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-
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-my $dbh;
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-my $is_connected;
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-sub connect
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-{
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- $dbh = DBI->connect("dbi:Sybase:server=$dbsvr;database=$dbname;".
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- "timeout=$timeout,loginTimeout=$timeout", $user, $pass)
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- or &ncrit("Could not connect to '$dbname' on '$dbsvr'");
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-
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- # Report success for a check of type CONNECT
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- &nok("Connect okay") if $checktype ne "FREESPACE";
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-}
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-
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-sub disconnect
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-{
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- $dbh->disconnect if $is_connected;
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- $is_connected = 0;
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-}
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-
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-sub check_space
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-{
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- &connect;
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-
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- # Most of this sub based on Michael Peppler's check-space.pl
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- # For debugging purposes, more values are collected than needed.
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-
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- $dbh->{syb_do_proc_status} = 1;
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-
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- my $dbinfo;
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-
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- # First check space in the database
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- my $sth = $dbh->prepare("sp_spaceused")
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- or &nunk("Failed to call sp_spaceused on '$dbsvr'");
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- $sth->execute
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- or &nunk("Failed to call sp_spaceused on '$dbsvr'");
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- do {
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- while(my $d = $sth->fetch)
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- {
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- if($d->[0] =~ /$dbname/)
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- {
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- # Grab "database_size"
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- $d->[1] =~ s/[^\d.]//g;
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- $dbinfo->{size} = $d->[1];
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- }
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- else
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- {
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- # Reserved, data, index, unused
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- foreach (@$d)
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- {
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- s/\D//g;
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- }
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-
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- # Grab "reserved", "data", "index"
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- $dbinfo->{reserved} = $d->[0] / 1024;
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- $dbinfo->{data} = $d->[1] / 1024;
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- $dbinfo->{index} = $d->[2] / 1024;
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- $dbinfo->{unused} = $d->[3] / 1024;
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- }
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- }
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- } while($sth->{syb_more_results});
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-
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- &explain("db size: ".$dbinfo->{size});
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- &explain("reserved: ".$dbinfo->{reserved});
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- &explain(" data: ".$dbinfo->{data});
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- &explain(" index: ".$dbinfo->{index});
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- &explain(" unused: ".$dbinfo->{unused});
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-
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- # Get the actual device usage from sp_helpdb to get the free log space
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- $sth = $dbh->prepare("sp_helpdb $dbname")
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- or &nunk("Failed to call sp_helpdb $dbname on '$dbsvr'");
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- $sth->execute
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- or &nunk("Failed to call sp_helpdb $dbname on '$dbsvr'");
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- do {
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- while(my $d = $sth->fetch)
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- {
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- # Look for "usage" column with value "log only"
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- if($d->[2] && $d->[2] =~ /log only/)
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- {
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- # Grab "size", add it to our log size
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- $d->[1] =~ s/[^\d\.]//g;
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- $dbinfo->{log} += $d->[1];
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- }
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-
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- # Look for "device fragments" column with "log only"
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- # followed by a number.
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- if($d->[0] =~ /log only .* (\d+)/)
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- {
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- $dbinfo->{logfree} = $1 / 1024;
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- }
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- }
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- } while($sth->{syb_more_results});
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-
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- &explain("log: ".$dbinfo->{log});
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- &explain("logfree: ".$dbinfo->{logfree});
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-
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- # Subtract the log size from the database size
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- $dbinfo->{realsize} = $dbinfo->{size} - $dbinfo->{log};
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- &explain("realsize (i.e. size - log) = ".$dbinfo->{realsize});
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-
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- # The "reserved" space is free for use by the table that freed it, so
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- # it is not truly free space. To be safe, our calculation ignores it.
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- my $free = ($dbinfo->{realsize} - $dbinfo->{reserved})/$dbinfo->{realsize};
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- $free = sprintf("%.2f", $free*100);
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-
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- &explain("(realsize-reserved)/realsize = $free%");
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- &explain("For safety, this calculation assumes no log space reuse. ".
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- "Because of this, you may get negative values.");
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-
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-
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- if ($free < $crit)
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- {
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- &ncrit("Free space is $free%! (critical threshold is $crit%)".
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- "|free_space=$free%");
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- }
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-
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- if ($free < $warn)
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- {
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- &nwarn("Free space is $free%! (warning threshold is $warn%)".
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- "|free_space=$free%");
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- }
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-
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-
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- &nok("Free space within thresholds ($free% free)".
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- "|free_space=$free%");
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-}
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-
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-sub read_config
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-{
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- open (CONFIG, "<$config")
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- or &nunk("Failed to open config file '$config': $!");
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- while (<CONFIG>)
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- {
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- chomp;
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- next if m/^#/; # skip comments
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- next if m/^$/; # skip blanks
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-
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- # Each case-insensitive argument can be followed by an optional
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- # colon, then must be followed by whitespace and the value.
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- # Options in the config file override those given on the
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- # command line, but don't rely on this!
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-
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- if (m/USER:?\s+(\S+)/i)
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- {
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- $user = $1;
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- }
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- elsif (m/PASS:?\s+(\S+)/i)
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- {
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- $pass = $1;
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- }
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- elsif (m/DBSVR:?\s+(\S+)/i)
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- {
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- $dbsvr = $1;
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- }
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- elsif (m/DBNAME:?\s+(\S+)/i)
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- {
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- $dbname = $1;
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- }
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- else
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- {
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- &nunk("Invalid line $. in config file '$config'");
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- }
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- }
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- close (CONFIG);
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-}
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-
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-sub help
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-{
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- print <<_HELP_;
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-Usage: $PROGNAME OPTIONS
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-A nagios plugin that connects to a Sybase database and checks free space.
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-
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-Mandatory arguments to long options are mandatory for short options too.
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- -U, --user Username to connect to database.
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- -P, --pass Password to connect to database.
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- -S, --dbsvr Database server (as in the interfaces file).
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- -D, --dbname Database name to check.
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- --config=FILE Config file (see SECURITY below)
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- --checktype=TYPE Type of check to run (see TYPEs below)
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- --explain Explains how we calculated the free space.
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- -w, --warning Warning threshold, in percent (default 25)
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- -c, --critical Critical threshold, in percent (default 10)
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- -t, --timeout Timeout value, in seconds (default 30)
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- -h, --help This help message
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- -V, --version Version information ($VERSION)
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-
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-Examples:
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- $PROGNAME -U sa -P secret -S bigbox -D orders
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- $PROGNAME --config=/secure/nagios-sybase.cfg --checktype=CONNECT
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-
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-TYPEs
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- There are two types of checks you can run:
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- --checktype=CONNECT
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- Checks just the connection to the database.
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- --checktype=FREESPACE
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- (Default) Checks both the connection to the database and the free space.
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-
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-SECURITY - Using a config file
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- Since a "ps ax" will reveal your database username and password, you can
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- instead specify them in a config file. Pass the config file with --config.
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- The format of the file is:
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- USER value
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- PASS value
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- You can also specify a DBSVR and DBNAME in the file. Comments (#) and blank
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- lines are ignored. Use whitespace to separate argument and value.
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-_HELP_
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-
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-}
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-
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-sub explain
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-{
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- return unless $explain;
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-
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- my $msg = shift;
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- print "$msg\n";
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-}
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-
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-
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-
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-# Some wrappers..
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-
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-# Returns code 0, OK
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-sub nok
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-{
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- my $msg = shift;
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- print "OK: $msg\n" if $msg;
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-
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- &disconnect;
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- exit $ERRORS{OK};
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-}
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-
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-# Returns code 1, Warning
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-sub nwarn
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-{
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- my $msg = shift;
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- print "WARNING: $msg\n";
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-
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- &disconnect;
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- exit $ERRORS{WARNING};
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-}
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-
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-# Returns code 2, Critical
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-sub ncrit
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-{
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- my $msg = shift;
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- print "CRITICAL: $msg\n";
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-
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- &disconnect;
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- exit $ERRORS{CRITICAL};
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-}
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-
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-# Returns code 3, Unknown
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-sub nunk
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-{
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- my $msg = shift;
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- print "ERROR: $msg\n";
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-
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- &disconnect;
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- exit $ERRORS{UNKNOWN};
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-}
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