contrib/check_nagios_db.pl

   1 #!/usr/local/bin/perl -w
   2
   3 use strict;
   4 $|++;
   5
   6 use vars qw/$opt_e $opt_c/;
   7
   8 $ENV{"PATH"} = "/usr/bin:/usr/sbin:/bin";
   9
  10 use Getopt::Std;
  11 use DBI;
  12
  13 my $driver = "mysql";
  14
  15 my $CFG_DEF = "/opt/nagios/etc/cgi.cfg";
  16 my $QUERY = "select *, UNIX_TIMESTAMP(last_update) as ut from programstatus;";
  17 my $EXPIRE_DEF = 5; ## expressed in minutes
  18 my $PROCCNT = 0;
  19
  20 use constant OK => 1;
  21 use constant WARN => 2;
  22
  23 my $STAT = WARN;
  24
  25 sub usage {
  26         print STDERR "\n";
  27         print STDERR "$0 -F -e <expire time in minutes> -C <process string>\n";
  28         print STDERR "\n";
  29         exit -1;
  30 }
  31
  32 getopt("e:c:");
  33
  34 my $EXPIRE = $opt_e || $EXPIRE_DEF;
  35 my $CFG = $opt_c || $CFG_DEF;
  36
  37 ( -f $CFG ) or die "Can't open config file '$CFG': $!\n";
  38
  39 my ($dbhost, $dbport, $dbuser, $dbpass, $dbname);
  40
  41 open(F, "< $CFG");
  42 while ( <F> ) {
  43         if (/^xsddb_host=(.+)/) { $dbhost = $1; next; };
  44         if (/^xsddb_port=(.+)/) { $dbport = $1; next; };
  45         if (/^xsddb_database=(.+)/) { $dbname = $1; next; };
  46         if (/^xsddb_username=(.+)/) { $dbuser = $1; next; };
  47         if (/^xsddb_password=(.+)/) { $dbpass = $1; next; };
  48 }
  49 close(F);
  50
  51 # print "($dbhost, $dbport, $dbuser, $dbpass, $dbname)\n";
  52
  53 my $dsn = "DBI:$driver:database=$dbname;host=$dbhost;port=$dbport";
  54 my $dbh = DBI->connect($dsn, $dbuser, $dbpass, {'RaiseError' => 1});
  55
  56 my $sth = $dbh->prepare($QUERY);
  57 if (!$sth) { die "Error:" . $dbh->errstr . "\n"; }
  58 $sth->execute;
  59 if (!$sth->execute) { die "Error:" . $sth->errstr . "\n"; }
  60
  61 my %status = ();
  62
  63 my $names = $sth->{'NAME'};
  64 my $numFields = $sth->{'NUM_OF_FIELDS'};
  65 my $ref = $sth->fetchrow_arrayref;
  66 for (my $i = 0;  $i < $numFields;  $i++) {
  67         $status{"$$names[$i]"} = $$ref[$i];
  68 }
  69
  70 #foreach (keys(%status)) {
  71 #       print "$_: $status{$_}\n";
  72 #}
  73
  74 my $lastupdated = time() - $status{"ut"};
  75 if ( $lastupdated < ($EXPIRE*60) ) { ## convert $EXPIRE to seconds
  76         $STAT = OK;
  77 }
  78
  79 open(PS, "ps -eaf | grep $status{nagios_pid} | grep -v grep | ");
  80 $PROCCNT = 0;
  81 while(<PS>) {
  82         $PROCCNT++;
  83 }
  84 close(PS);
  85
  86 if ( $STAT == OK ) {
  87         print "Nagios OK: located $PROCCNT processes, program status updated $lastupdated seconds ago\n";
  88 }
  89