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-rw-r--r--contrib/check_javaproc.pl278
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diff --git a/contrib/check_javaproc.pl b/contrib/check_javaproc.pl
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-#!/usr/bin/perl -w
-
-#
-# Author: Wim Rijnders, 17-10-2002
-#
-# Description:
-# -----------
-#
-# Nagios host script to check if any specified java processes are running.
-#
-# Implementation Notes:
-# ---------------------
-#
-# check_disk_smb was used as a starting point, since it was written in perl.
-#
-# This script has been created and tested on Linux RH 7.1.
-#
-# I tried OS-X Darwin (BSD), but the ps command works differently.
-# Notably, you can't get a combined list of child processes. The best approach
-# appears to be to use 'ps -wwaxo command' combined with 'ps -M' (or suchlike)
-#
-########################################################################
-####
-
-require 5.004;
-use POSIX;
-use strict;
-use Getopt::Long;
-use vars qw($opt_w $opt_c $verbose $classname);
-use vars qw($PROGNAME);
-use lib "utils.pm" ;
-use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
-
-$PROGNAME="check_javaprocs";
-sub getJavaList ();
-sub check_ranges ($ $ $ $);
-
-Getopt::Long::Configure('bundling', 'no_ignore_case');
-GetOptions
- ("V|version" => \&version,
- "h|help" => \&help,
- "v|verbose" => \$verbose,
- "w|warning=s" => \$opt_w,
- "c|critical=s" => \$opt_c,
- "n|name=s" => \$classname
- );
-
-
-my $state = 'OK';
-my $min_warn = undef
-my $max_warn = undef;
-my $min_crit = undef;
-my $max_crit = undef;
-
-
-($opt_w) || ($opt_w = shift);
-check_ranges($opt_w,\$min_warn, \$max_warn, "warning");
-($opt_c) || ($opt_c = shift);
-check_ranges($opt_c,\$min_crit, \$max_crit, "critical");
-
-
-#
-# Determine # of running processes for the java programs that interest us.
-#
-my @javalist = getJavaList();
-
-my $total = 0;
-my $msgout = "";
-my @fields;
-
-if ( defined $classname ) {
-
- #filter out a single java process based on class name
- foreach (@javalist) {
- @fields = split(/\s+/, $_);
- $total = $fields[-1] and last if $classname eq $fields[0];
- }
- $msgout .= "$total processes for $classname\n";
-} else {
- #Handle all java processes
- $msgout .= "\n";
- foreach (@javalist) {
- @fields = split(/\s+/, $_);
-
- $total += $fields[-1];
- $msgout .= " $fields[-1] processes for ";
- $msgout .= (scalar @fields > 1)? $fields[0] : "unknown" ;
- $msgout .= "\n";
- }
- my $msgtotal = "$total java processes for ". scalar @javalist . " applications";
-
- if ( defined $verbose ) {
- $msgout = $msgtotal . $msgout;
- } else {
- $msgout = $msgtotal;
- }
-
-}
-
-#
-# Set the state with the data we now have accumulated
-# Note that due to the order of testing, warnings have precedence over
-# criticals. This is logical, since you should be able to create a criticals
-# range which encompasses a warning range. eg. following should be possible:
-#
-# check_javaproc -w 5:10 -c 3:12
-# proper specification of the ranges is the responsibility of the script user.
-#
-$state = 'CRITICAL' if (defined $min_crit && $total < $min_crit);
-$state = 'CRITICAL' if (defined $max_crit && $total > $max_crit);
-$state = 'CRITICAL' if (!defined $min_crit && !defined $max_crit && $total==0 );
-$state = 'WARNING' if (defined $min_warn && $total < $min_warn);
-$state = 'WARNING' if (defined $max_warn && $total > $max_warn);
-
-print $msgout;
-print "$state\n" if ($verbose);
-exit $ERRORS{$state};
-
-###################################
-# Support routines for Nagios
-###################################
-sub check_ranges($$$$) {
- my ($opt, $min, $max, $rangename) = @_;
-
- if ( defined $opt ) {
- if ( $opt =~ /^([0-9]*)\:([0-9]*)$/) {
- $$min = $1 if $1 > 0;
- $$max= $2 if $2 > 0;
- } else {
- usage("Invalid $rangename range: $opt\n");
- }
- }
-
- if ( defined $$min && defined $$max ) {
- usage("Min value of $rangename range larger than max value: $opt\n") if ( $$min > $$max);
- }
-}
-
-sub print_usage () {
- print "Usage: $PROGNAME [-v] [-w <min:max>] [-c <min:max>] [ -n <classname>]\n";
-}
-
-sub print_help () {
- revision();
- print "Copyright (c) 2002 by Wim Rijnders
-
-Perl Check java processes plugin for Nagios
-
-";
- print_usage();
- print "
--v, --verbose
- Return additional information.
- Intended as a command-line aid, not recommended for Nagios script usage.
-
--w, --warning=INTEGER:INTEGER
- Minimum and maximum number of processes outside of which a warning will be
- generated. If omitted, no warning is generated.
-
--c, --critical=INTEGER:INTEGER
- Minimum and maximum number of processes outside of which a critical will be
- generated. If omitted, a critical is generated if no processes are running.
-
--n, --name=STRING
- Name of class specified on the java command line (from which main() is run).
- If omitted, all java processes are taken into account.
-
-";
- support();
-}
-
-sub revision() {
- print_revision($PROGNAME,'$Revision: 211 $ ');
-}
-
-sub version () {
- revision();
- exit $ERRORS{'OK'};
-}
-
-sub help () {
- print_help();
- exit $ERRORS{'OK'};
-}
-
-###################################
-# Routines for delivering the data
-###################################
-
-#
-# Generate a formatted list of running java processes.
-#
-# Returns an array of strings having the following syntax:
-#
-# <java class running as main> <parameters if any> <#processes for this class>
-#
-sub getJavaList() {
-
- my @output;
-
- # Untaint
- local $ENV{'PATH'} = '/bin:/usr/bin';
- local $ENV{'BASH_ENV'} = '~/.bashrc';
-
- # We are only interested in the full command line
- # The -H opstion is important for the order of the processes;
- # this option ensures that all child processes are listed under
- # their parents
- @output=`ps -AHo \"\%a\" -ww`;
-
- #remove preceding whitespace and final EOL
- foreach (@output) {
- s/^\s*//;
- chop;
- }
-
- #Combine any consecutive processes with exactly the same command line
- #into a single item
- @output = checkSameLine(@output);
-
- #Filter out all java processes
- my @javalist;
- for (my $i = 0; $i < scalar @output; ++$i) {
- push @javalist, $output[$i] if $output[$i] =~ /^\S*java/;
- }
-
- foreach (@javalist) {
- #The java statement at the beginning is redundant; remove it
- s/^\S*java//;
-
- #remove all defines
- s/\-D\S+//g;
-
- #remove classpath
- s/\-(classpath|cp)\s+\S+//g;
-
- #remove any other parameters we don't want to see
- s/\-server\s+//g;
- s/\-X\S*\s+//g;
-
- #remove any redundant whitespaces at the beginning
- s/^\s+//;
-
- }
-
- @javalist;
-}
-
-
-#
-# Combine all consecutive lines with an identical command line
-# to a signle line with a count at the end
-#
-sub checkSameLine {
- my @input = @_;
- my @output;
- my $prevline= "";
- my $prevcount = 0;
-
- foreach my $a (@input) {
- if ( $prevline eq $a) {
- ++$prevcount;
- } else {
- push @output, $prevline . " " . ($prevcount + 1);
- $prevcount = 0;
- }
- $prevline = $a;
- }
-
- #don't forget the last item!
- if ( $prevcount > 0 ) {
- push @output, $prevline . " " . ($prevcount + 1);
- }
-
- @output;
-}
-
-#======= end check_javaproc =====