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@@ -0,0 +1,471 @@
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+#!/usr/bin/perl -w
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+#
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+# (c)1999 Ian Cass, Knowledge Matters Ltd.
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+# Read the GNU copyright stuff for all the legalese
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+#
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+# Check NTP time servers plugin. This plugin requires the ntpdate utility to
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+# be installed on the system, however since it's part of the ntp suite, you
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+# should already have it installed.
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+#
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+#
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+# Nothing clever done in this program - its a very simple bare basics hack to
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+# get the job done.
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+#
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+# Things to do...
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+# check @words[9] for time differences greater than +/- x secs & return a
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+# warning.
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+#
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+# (c) 1999 Mark Jewiss, Knowledge Matters Limited
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+# 22-9-1999, 12:45
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+#
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+# Modified script to accept 2 parameters or set defaults.
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+# Now issues warning or critical alert is time difference is greater than the
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+# time passed.
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+#
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+# These changes have not been tested completely due to the unavailability of a
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+# server with the incorrect time.
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+#
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+# (c) 1999 Bo Kersey, VirCIO - Managed Server Solutions <bo@vircio.com>
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+# 22-10-99, 12:17
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+#
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+# Modified the script to give useage if no parameters are input.
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+#
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+# Modified the script to check for negative as well as positive
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+# time differences.
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+#
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+# Modified the script to work with ntpdate 3-5.93e Wed Apr 14 20:23:03 EDT 1999
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+#
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+# Modified the script to work with ntpdate's that return adjust or offset...
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+#
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+#
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+# Script modified 2000 June 01 by William Pietri <william@bianca.com>
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+#
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+# Modified script to handle weird cases:
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+# o NTP server doesn't respond (e.g., has died)
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+# o Server has correct time but isn't suitable synchronization
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+# source. This happens while starting up and if contact
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+# with master has been lost.
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+#
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+# Modifed to run under Embedded Perl (sghosh@users.sf.net)
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+# - combined logic some blocks together..
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+#
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+# Added ntpdate check for stratum 16 desynch peer (James Fidell) Feb 03, 2003
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+#
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+# ntpdate - offset is in seconds
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+# changed ntpdc to ntpq - jitter/dispersion is in milliseconds
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+#
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+# Patch for for regex for stratum1 refid.
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+
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+require 5.004;
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+use POSIX;
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+use strict;
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+use Getopt::Long;
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+use vars qw($opt_V $opt_h $opt_H $opt_t $opt_w $opt_c $opt_O $opt_j $opt_k $verbose $PROGNAME $def_jitter $ipv4 $ipv6);
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+use lib utils.pm;
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+use utils qw($TIMEOUT %ERRORS &print_revision &support);
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+
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+$PROGNAME="check_ntp";
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+
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+sub print_help ();
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+sub print_usage ();
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+
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+$ENV{'PATH'}='@trusted_path@';
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+$ENV{'BASH_ENV'}='';
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+$ENV{'ENV'}='';
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+
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+# defaults in sec
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+my $DEFAULT_OFFSET_WARN = 60; # 1 minute
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+my $DEFAULT_OFFSET_CRIT = 120; # 2 minutes
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+# default in millisec
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+my $DEFAULT_JITTER_WARN = 5000; # 5 sec
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+my $DEFAULT_JITTER_CRIT = 10000; # 10 sec
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+
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+Getopt::Long::Configure('bundling');
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+GetOptions
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+ ("V" => \$opt_V, "version" => \$opt_V,
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+ "h" => \$opt_h, "help" => \$opt_h,
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+ "v" => \$verbose, "verbose" => \$verbose,
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+ "4" => \$ipv4, "use-ipv4" => \$ipv4,
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+ "6" => \$ipv6, "use-ipv6" => \$ipv6,
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+ "w=f" => \$opt_w, "warning=f" => \$opt_w, # offset|adjust warning if above this number
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+ "c=f" => \$opt_c, "critical=f" => \$opt_c, # offset|adjust critical if above this number
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+ "O" => \$opt_O, "zero-offset" => \$opt_O, # zero-offset bad
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+ "j=s" => \$opt_j, "jwarn=i" => \$opt_j, # jitter warning if above this number
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+ "k=s" => \$opt_k, "jcrit=i" => \$opt_k, # jitter critical if above this number
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+ "t=s" => \$opt_t, "timeout=i" => \$opt_t,
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+ "H=s" => \$opt_H, "hostname=s" => \$opt_H);
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+
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+if ($opt_V) {
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+ print_revision($PROGNAME,'@NP_VERSION@');
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+ exit $ERRORS{'OK'};
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+}
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+
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+if ($opt_h) {
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+ print_help();
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+ exit $ERRORS{'OK'};
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+}
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+
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+# jitter test params specified
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+if (defined $opt_j || defined $opt_k ) {
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+ $def_jitter = 1;
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+}
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+
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+$opt_H = shift unless ($opt_H);
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+my $host = $1 if ($opt_H && $opt_H =~ m/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|[a-zA-Z][-a-zA-Z0-9]+(\.[a-zA-Z][-a-zA-Z0-9]+)*)$/);
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+unless ($host) {
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+ print "No target host specified\n";
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+ print_usage();
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+ exit $ERRORS{'UNKNOWN'};
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+}
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+
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+my ($timeout, $owarn, $ocrit, $jwarn, $jcrit);
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+
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+$timeout = $TIMEOUT;
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+($opt_t) && ($opt_t =~ /^([0-9]+)$/) && ($timeout = $1);
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+
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+$owarn = $DEFAULT_OFFSET_WARN;
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+($opt_w) && ($opt_w =~ /^([0-9.]+)$/) && ($owarn = $1);
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+
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+$ocrit = $DEFAULT_OFFSET_CRIT;
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+($opt_c) && ($opt_c =~ /^([0-9.]+)$/) && ($ocrit = $1);
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+
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+$jwarn = $DEFAULT_JITTER_WARN;
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+($opt_j) && ($opt_j =~ /^([0-9]+)$/) && ($jwarn = $1);
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+
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+$jcrit = $DEFAULT_JITTER_CRIT;
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+($opt_k) && ($opt_k =~ /^([0-9]+)$/) && ($jcrit = $1);
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+
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+if ($ocrit < $owarn ) {
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+ print "Critical offset should be larger than warning offset\n";
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+ print_usage();
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+ exit $ERRORS{"UNKNOWN"};
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+}
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+
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+if ($def_jitter) {
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+ if ($opt_k < $opt_j) {
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+ print "Critical jitter should be larger than warning jitter\n";
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+ print_usage();
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+ exit $ERRORS{'UNKNOWN'};
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+ }
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+}
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+
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+
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+my $stratum = -1;
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+my $ignoreret = 0;
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+my $answer = undef;
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+my $offset = undef;
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+my $jitter = undef;
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+my $syspeer = undef;
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+my $candidate = 0;
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+my @candidates;
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+my $msg; # first line of output to print if format is invalid
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+
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+my $state = $ERRORS{'UNKNOWN'};
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+my $ntpdate_error = $ERRORS{'UNKNOWN'};
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+my $jitter_error = $ERRORS{'UNKNOWN'};
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+
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+# some systems don't have a proper ntpq (migrated from ntpdc)
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+my $have_ntpq = undef;
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+if ($utils::PATH_TO_NTPQ && -x $utils::PATH_TO_NTPQ ) {
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+ $have_ntpq = 1;
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+}else{
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+ $have_ntpq = 0;
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+}
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+
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+# Just in case of problems, let's not hang Nagios
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+$SIG{'ALRM'} = sub {
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+ print ("ERROR: No response from ntp server (alarm)\n");
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+ exit $ERRORS{"UNKNOWN"};
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+};
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+alarm($timeout);
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+
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+# Determine protocol to be used for ntpdate and ntpq
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+my $ntpdate = $utils::PATH_TO_NTPDATE;
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+my $ntpq = $utils::PATH_TO_NTPQ;
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+if ($ipv4) {
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+ $ntpdate .= " -4";
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+ $ntpq .= " -4";
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+}
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+elsif ($ipv6) {
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+ $ntpdate .= " -6";
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+ $ntpq .= " -6";
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+}
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+# else don't use any flags
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+
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+###
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+###
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+### First, check ntpdate
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+###
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+###
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+
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+if (!open (NTPDATE, $ntpdate . " -q $host 2>&1 |")) {
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+ print "Could not open $ntpdate: $!\n";
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+ exit $ERRORS{"UNKNOWN"};
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+}
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+
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+my $out;
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+while (<NTPDATE>) {
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+ #print if ($verbose); # noop
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+ $msg = $_ unless ($msg);
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+ $out .= "$_ ";
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+
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+ if (/stratum\s(\d+)/) {
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+ $stratum = $1;
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+ }
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+
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+ if (/(offset|adjust)\s+([-.\d]+)/i) {
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+ $offset = $2;
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+
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+ # An offset of 0.000000 with an error is probably bogus. Actually,
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+ # it's probably always bogus, but let's be paranoid here.
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+ # Has been reported that 0.0000 happens in a production environment
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+ # on Solaris 8 so this check should be taken out - SF tracker 1150777
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+ if (defined $opt_O ) {
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+ if ($offset == 0) { undef $offset;}
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+ }
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+
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+ $ntpdate_error = defined ($offset) ? $ERRORS{"OK"} : $ERRORS{"CRITICAL"};
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+ print "ntperr = $ntpdate_error \n" if $verbose;
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+
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+ }
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+
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+ if (/no server suitable for synchronization found/) {
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+ if ($stratum == 16) {
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+ $ntpdate_error = $ERRORS{"WARNING"};
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+ $msg = "Desynchronized peer server found";
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+ $ignoreret=1;
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+ }
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+ else {
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+ $ntpdate_error = $ERRORS{"CRITICAL"};
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+ $msg = "No suitable peer server found - ";
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+ }
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+ }
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+
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+}
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+$out =~ s/\n//g;
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+close (NTPDATE) ||
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+ die $! ? "$out - Error closing $ntpdate pipe: $!"
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+ : "$out - Exit status: $? from $ntpdate\n";
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+
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+# declare an error if we also get a non-zero return code from ntpdate
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+# unless already set to critical
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+if ( $? && !$ignoreret ) {
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+ print "stderr = $? : $! \n" if $verbose;
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+ $ntpdate_error = $ntpdate_error == $ERRORS{"CRITICAL"} ? $ERRORS{"CRITICAL"} : $ERRORS{"UNKNOWN"} ;
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+ print "ntperr = $ntpdate_error : $!\n" if $verbose;
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+}
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+
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+###
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+###
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+### Then scan xntpq/ntpq if it exists
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+### and look in the 11th column for jitter
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+###
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+# Field 1: Tally Code ( Space, 'x','.','-','+','#','*','o')
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+# Only match for '*' which implies sys.peer
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+# or 'o' which implies pps.peer
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+# If both exist, the last one is picked.
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+# Field 2: address of the remote peer
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+# Field 3: Refid of the clock (0.0.0.0 if unknown, WWWV/PPS/GPS/ACTS/USNO/PCS/... if Stratum1)
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+# Field 4: stratum (0-15)
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+# Field 5: Type of the peer: local (l), unicast (u), multicast (m)
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+# broadcast (b); not sure about multicast/broadcast
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+# Field 6: last packet receive (in seconds)
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+# Field 7: polling interval
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+# Field 8: reachability resgister (octal)
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+# Field 9: delay
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+# Field 10: offset
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+# Field 11: dispersion/jitter
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+#
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+# According to bug 773588 Some solaris xntpd implementations seemto match on
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+# "#" even though the docs say it exceeds maximum distance. Providing patch
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+# here which will generate a warining.
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+
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+if ($have_ntpq) {
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+
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+ if ( open(NTPQ, $ntpq . " -np $host 2>&1 |") ) {
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+ while (<NTPQ>) {
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+ print $_ if ($verbose);
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+ if ( /timed out/ ){
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+ $have_ntpq = 0 ;
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+ last ;
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+ }
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+ # number of candidates on <host> for sys.peer
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+ if (/^(\*|\+|\#|o])/) {
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+ ++$candidate;
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+ push (@candidates, $_);
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+ print "Candidate count= $candidate\n" if ($verbose);
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+ }
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+
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+ # match sys.peer or pps.peer
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+ if (/^(\*|o)(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/) {
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+ $syspeer = $2;
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+ $stratum = $4;
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+ $jitter = $11;
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+ print "match $_ \n" if $verbose;
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+ if ($jitter > $jcrit) {
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+ print "Jitter_crit = $11 :$jcrit\n" if ($verbose);
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+ $jitter_error = $ERRORS{'CRITICAL'};
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+ } elsif ($jitter > $jwarn ) {
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+ print "Jitter_warn = $11 :$jwarn\n" if ($verbose);
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+ $jitter_error = $ERRORS{'WARNING'};
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+ } else {
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+ $jitter_error = $ERRORS{'OK'};
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+ }
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+ } else {
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+ print "No match!\n" if $verbose;
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+ $jitter = '(not parsed)';
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+ }
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+
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+ }
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+ close NTPQ ||
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+ die $! ? "Error closing $ntpq pipe: $!"
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+ : "Exit status: $? from $ntpq\n";
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+
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+ # if we did not match sys.peer or pps.peer but matched # candidates only
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+ # generate a warning
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+ # based on bug id 773588
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+ unless (defined $syspeer) {
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+ if ($#candidates >=0) {
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+ foreach my $c (@candidates) {
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+ $c =~ /^(#)([-0-9.\s]+)\s+([-0-9A-Za-z_().]+)\s+([-0-9.]+)\s+([lumb-]+)\s+([-0-9m.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)/;
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+ $syspeer = $2;
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+ $stratum = $4;
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+ $jitter = $11;
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+ print "candidate match $c \n" if $verbose;
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+ if ($jitter > $jcrit) {
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+ print "Candidate match - Jitter_crit = $11 :$jcrit\n" if ($verbose);
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+ $jitter_error = $ERRORS{'CRITICAL'};
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+ }elsif ($jitter > $jwarn ) {
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+ print "Candidate match - Jitter_warn = $11 :$jwarn \n" if ($verbose);
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+ $jitter_error = $ERRORS{'WARNING'};
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+ } else {
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+ $jitter_error = $ERRORS{'WARNING'};
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+ }
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+ }
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+
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+ }
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+ }
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+ }
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+}
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+
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+
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+if ($ntpdate_error != $ERRORS{'OK'}) {
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+ $state = $ntpdate_error;
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+ if ($ntpdate_error == $ERRORS{'WARNING'} ) {
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+ $answer = $msg;
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+ }
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+ else {
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+ $answer = $msg . "Server for ntp probably down";
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+ }
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+
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+ if (defined($offset) && abs($offset) > $ocrit) {
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+ $state = $ERRORS{'CRITICAL'};
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+ $answer = "Server Error and offset $offset sec > +/- $ocrit sec";
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+ } elsif (defined($offset) && abs($offset) > $owarn) {
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+ $answer = "Server error and offset $offset sec > +/- $owarn sec";
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+ } elsif (defined($jitter) && abs($jitter) > $jcrit) {
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+ $answer = "Server error and jitter $jitter msec > +/- $jcrit msec";
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+ } elsif (defined($jitter) && abs($jitter) > $jwarn) {
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+ $answer = "Server error and jitter $jitter msec > +/- $jwarn msec";
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+ }
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+
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+} elsif ($have_ntpq && $jitter_error != $ERRORS{'OK'}) {
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+ $state = $jitter_error;
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+ $answer = "Jitter $jitter too high";
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+ if (defined($offset) && abs($offset) > $ocrit) {
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+ $state = $ERRORS{'CRITICAL'};
|
|
|
+ $answer = "Jitter error and offset $offset sec > +/- $ocrit sec";
|
|
|
+ } elsif (defined($offset) && abs($offset) > $owarn) {
|
|
|
+ $answer = "Jitter error and offset $offset sec > +/- $owarn sec";
|
|
|
+ } elsif (defined($jitter) && abs($jitter) > $jcrit) {
|
|
|
+ $answer = "Jitter error and jitter $jitter msec > +/- $jcrit msec";
|
|
|
+ } elsif (defined($jitter) && abs($jitter) > $jwarn) {
|
|
|
+ $answer = "Jitter error and jitter $jitter msec > +/- $jwarn msec";
|
|
|
+ }
|
|
|
+
|
|
|
+} elsif( !$have_ntpq ) { # no errors from ntpdate and no ntpq or ntpq timed out
|
|
|
+ if (abs($offset) > $ocrit) {
|
|
|
+ $state = $ERRORS{'CRITICAL'};
|
|
|
+ $answer = "Offset $offset sec > +/- $ocrit sec";
|
|
|
+ } elsif (abs($offset) > $owarn) {
|
|
|
+ $state = $ERRORS{'WARNING'};
|
|
|
+ $answer = "Offset $offset sec > +/- $owarn sec";
|
|
|
+ } elsif (( abs($offset) > $owarn) && $def_jitter ) {
|
|
|
+ $state = $ERRORS{'WARNING'};
|
|
|
+ $answer = "Offset $offset sec > +/- $owarn sec, ntpq timed out";
|
|
|
+ } elsif ( $def_jitter ) {
|
|
|
+ $state = $ERRORS{'WARNING'};
|
|
|
+ $answer = "Offset $offset secs, ntpq timed out";
|
|
|
+ } else{
|
|
|
+ $state = $ERRORS{'OK'};
|
|
|
+ $answer = "Offset $offset secs";
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+} else { # no errors from ntpdate or ntpq
|
|
|
+ if (abs($offset) > $ocrit) {
|
|
|
+ $state = $ERRORS{'CRITICAL'};
|
|
|
+ $answer = "Offset $offset sec > +/- $ocrit sec, jitter $jitter msec";
|
|
|
+ } elsif (abs($jitter) > $jcrit ) {
|
|
|
+ $state = $ERRORS{'CRITICAL'};
|
|
|
+ $answer = "Jitter $jitter msec> +/- $jcrit msec, offset $offset sec";
|
|
|
+ } elsif (abs($offset) > $owarn) {
|
|
|
+ $state = $ERRORS{'WARNING'};
|
|
|
+ $answer = "Offset $offset sec > +/- $owarn sec, jitter $jitter msec";
|
|
|
+ } elsif (abs($jitter) > $jwarn ) {
|
|
|
+ $state = $ERRORS{'WARNING'};
|
|
|
+ $answer = "Jitter $jitter msec> +/- $jwarn msec, offset $offset sec";
|
|
|
+
|
|
|
+ } else {
|
|
|
+ $state = $ERRORS{'OK'};
|
|
|
+ $answer = "Offset $offset secs, jitter $jitter msec, peer is stratum $stratum";
|
|
|
+ }
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+foreach my $key (keys %ERRORS) {
|
|
|
+ if ($state==$ERRORS{$key}) {
|
|
|
+# print ("NTP $key: $answer");
|
|
|
+ print ("NTP $key: $answer|offset=$offset, jitter=" . $jitter/1000 . ",peer_stratum=$stratum\n");
|
|
|
+ last;
|
|
|
+ }
|
|
|
+}
|
|
|
+exit $state;
|
|
|
+
|
|
|
+
|
|
|
+####
|
|
|
+#### subs
|
|
|
+
|
|
|
+sub print_usage () {
|
|
|
+ print "Usage: $PROGNAME -H <host> [-46] [-O] [-w <warn>] [-c <crit>] [-j <warn>] [-k <crit>] [-v verbose]\n";
|
|
|
+}
|
|
|
+
|
|
|
+sub print_help () {
|
|
|
+ print_revision($PROGNAME,'@NP_VERSION@');
|
|
|
+ print "Copyright (c) 2003 Bo Kersey/Karl DeBisschop\n";
|
|
|
+ print "\n";
|
|
|
+ print_usage();
|
|
|
+ print "
|
|
|
+Checks the local timestamp offset versus <host> with ntpdate
|
|
|
+Checks the jitter/dispersion of clock signal between <host> and its sys.peer with ntpq\n
|
|
|
+-O (--zero-offset)
|
|
|
+ A zero offset on \"ntpdate\" will generate a CRITICAL.\n
|
|
|
+-w (--warning)
|
|
|
+ Clock offset in seconds at which a warning message will be generated.\n Defaults to $DEFAULT_OFFSET_WARN.
|
|
|
+-c (--critical)
|
|
|
+ Clock offset in seconds at which a critical message will be generated.\n Defaults to $DEFAULT_OFFSET_CRIT.
|
|
|
+-j (--jwarn)
|
|
|
+ Clock jitter in milliseconds at which a warning message will be generated.\n Defaults to $DEFAULT_JITTER_WARN.
|
|
|
+-k (--jcrit)
|
|
|
+ Clock jitter in milliseconds at which a critical message will be generated.\n Defaults to $DEFAULT_JITTER_CRIT.
|
|
|
+
|
|
|
+ If jitter/dispersion is specified with -j or -k and ntpq times out, then a
|
|
|
+ warning is returned.\n
|
|
|
+-4 (--use-ipv4)
|
|
|
+ Use IPv4 connection
|
|
|
+-6 (--use-ipv6)
|
|
|
+ Use IPv6 connection
|
|
|
+\n";
|
|
|
+support();
|
|
|
+}
|
Holger Weiss