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-rwxr-xr-xplugins-scripts/check_ntp.pl72
1 files changed, 46 insertions, 26 deletions
diff --git a/plugins-scripts/check_ntp.pl b/plugins-scripts/check_ntp.pl
index 9a58d78..ddaa394 100755
--- a/plugins-scripts/check_ntp.pl
+++ b/plugins-scripts/check_ntp.pl
@@ -1,4 +1,4 @@
1#! /usr/bin/perl -wT 1#! /usr/bin/perl -w
2 2
3# (c)1999 Ian Cass, Knowledge Matters Ltd. 3# (c)1999 Ian Cass, Knowledge Matters Ltd.
4# Read the GNU copyright stuff for all the legalese 4# Read the GNU copyright stuff for all the legalese
@@ -47,7 +47,10 @@
47# source. This happens while starting up and if contact 47# source. This happens while starting up and if contact
48# with master has been lost. 48# with master has been lost.
49# 49#
50# Modifed to run under Embedded Perl 50# Modifed to run under Embedded Perl (sghosh@users.sf.net)
51# - combined logic some blocks together..
52#
53# Todo - non-hardcoded dispersion values...
51# 54#
52 55
53 56
@@ -73,8 +76,8 @@ GetOptions
73 ("V" => \$opt_V, "version" => \$opt_V, 76 ("V" => \$opt_V, "version" => \$opt_V,
74 "h" => \$opt_h, "help" => \$opt_h, 77 "h" => \$opt_h, "help" => \$opt_h,
75 "v" => \$verbose, "verbose" => \$verbose, 78 "v" => \$verbose, "verbose" => \$verbose,
76 "w=s" => \$opt_w, "warning=s" => \$opt_w, 79 "w=s" => \$opt_w, "warning=s" => \$opt_w, # offset|adjust warning if above this number
77 "c=s" => \$opt_c, "critical=s" => \$opt_c, 80 "c=s" => \$opt_c, "critical=s" => \$opt_c, # offset|adjust critical if above this number
78 "H=s" => \$opt_H, "hostname=s" => \$opt_H); 81 "H=s" => \$opt_H, "hostname=s" => \$opt_H);
79 82
80if ($opt_V) { 83if ($opt_V) {
@@ -90,6 +93,7 @@ if ($opt_h) {
90$opt_H = shift unless ($opt_H); 93$opt_H = shift unless ($opt_H);
91my $host = $1 if ($opt_H && $opt_H =~ m/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|[a-zA-Z][-a-zA-Z0-9]+(\.[a-zA-Z][-a-zA-Z0-9]+)*)$/); 94my $host = $1 if ($opt_H && $opt_H =~ m/^([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|[a-zA-Z][-a-zA-Z0-9]+(\.[a-zA-Z][-a-zA-Z0-9]+)*)$/);
92unless ($host) { 95unless ($host) {
96 print "No target host specified\n";
93 print_usage(); 97 print_usage();
94 exit $ERRORS{'UNKNOWN'}; 98 exit $ERRORS{'UNKNOWN'};
95} 99}
@@ -100,6 +104,12 @@ my $warning = $1 if ($opt_w =~ /([0-9]+)/);
100($opt_c) || ($opt_c = shift) || ($opt_c = 120); 104($opt_c) || ($opt_c = shift) || ($opt_c = 120);
101my $critical = $1 if ($opt_c =~ /([0-9]+)/); 105my $critical = $1 if ($opt_c =~ /([0-9]+)/);
102 106
107if ($opt_c < $opt_w) {
108 print "Critical offset should be larger than warning offset\n";
109 print_usage();
110 exit $ERRORS{"UNKNOWN"};
111}
112
103my $answer = undef; 113my $answer = undef;
104my $offset = undef; 114my $offset = undef;
105my $msg; # first line of output to print if format is invalid 115my $msg; # first line of output to print if format is invalid
@@ -115,16 +125,16 @@ $SIG{'ALRM'} = sub {
115 print ("ERROR: No response from ntp server (alarm)\n"); 125 print ("ERROR: No response from ntp server (alarm)\n");
116 exit $ERRORS{"UNKNOWN"}; 126 exit $ERRORS{"UNKNOWN"};
117}; 127};
118alarm($TIMEOUT); 128#alarm($TIMEOUT);
119 129
120 130
121### 131###
122### 132###$dispersion_error = $ERRORS{'
123### First, check ntpdate 133### First, check ntpdate
124### 134###
125### 135###
126 136
127if (!open (NTPDATE, "/usr/local/sbin/ntpdate -q $host 2>&1 |")) { 137if (!open (NTPDATE, "$utils::PATH_TO_NTPDATE -q $host 2>&1 |")) {
128 print "Could not open ntpdate\n"; 138 print "Could not open ntpdate\n";
129 exit $ERRORS{"UNKNOWN"}; 139 exit $ERRORS{"UNKNOWN"};
130} 140}
@@ -134,50 +144,60 @@ while (<NTPDATE>) {
134 $msg = $_ unless ($msg); 144 $msg = $_ unless ($msg);
135 if (/(offset|adjust)\s+([-.\d]+)/i) { 145 if (/(offset|adjust)\s+([-.\d]+)/i) {
136 $offset = $2; 146 $offset = $2;
137 last; 147
148 # An offset of 0.000000 with an error is probably bogus. Actually,
149 # it's probably always bogus, but let's be paranoid here.
150 if ($offset == 0) { undef $offset;}
151
152 $ntpdate_error = defined ($offset) ? $ERRORS{"OK"} : $ERRORS{"CRITICAL"};
153 print "ntperr = $ntpdate_error \n" if $verbose;
154
138 } 155 }
139}
140 156
141# soak up remaining output; check for error
142while (<NTPDATE>) {
143 if (/no server suitable for synchronization found/) { 157 if (/no server suitable for synchronization found/) {
144 $ntpdate_error = $ERRORS{"CRITICAL"}; 158 $ntpdate_error = $ERRORS{"CRITICAL"};
159 $msg = "No suitable peer server found - ";
145 } 160 }
146}
147 161
148close(NTPDATE); 162}
149 163
150# only declare an error if we also get a non-zero return code from ntpdate 164close (NTPDATE);
151$ntpdate_error = ($? >> 8) || $ntpdate_error; 165# declare an error if we also get a non-zero return code from ntpdate
166# unless already set to critical
167if ( $? ) {
168 print "stderr = $? : $! \n" if $verbose;
169 $ntpdate_error = $ntpdate_error == $ERRORS{"CRITICAL"} ? $ERRORS{"CRITICAL"} : $ERRORS{"UNKNOWN"} ;
170 print "ntperr = $ntpdate_error : $!\n" if $verbose;
171}
152 172
153### 173###
154### 174###
155### Then scan xntpdc if it exists 175### Then scan xntpdc/ntpdc if it exists
156### 176### and look in the 8th column for dispersion (ntpd v4) or jitter (ntpd v3)
157### 177###
158 178
159if (#open(NTPDC,"/usr/sbin/ntpdc -c $host 2>&1 |") || 179if ( open(NTPDC,"$utils::PATH_TO_NTPDC -s $host 2>&1 |") ) {
160 open(NTPDC,"/usr/sbin/xntpdc -c $host 2>&1 |") ) {
161 while (<NTPDC>) { 180 while (<NTPDC>) {
162 print if ($verbose); 181 print $_ if ($verbose);
163 if (/([^\s]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)/) { 182 if (/([^\s]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)\s+([-0-9.]+)/) {
164 if ($8>15) { 183 if ($8>15) {
184 print "Dispersion = $8 \n" if ($verbose);
165 $dispersion_error = $ERRORS{'CRITICAL'}; 185 $dispersion_error = $ERRORS{'CRITICAL'};
166 } elsif ($8>5 && $dispersion_error<$ERRORS{'CRITICAL'}) { 186 } elsif ($8>5 && $dispersion_error<$ERRORS{'CRITICAL'}) {
187 print "Dispersion = $8 \n" if ($verbose);
167 $dispersion_error = $ERRORS{'WARNING'}; 188 $dispersion_error = $ERRORS{'WARNING'};
189 } else {
190 $dispersion_error = $ERRORS{'OK'};
168 } 191 }
169 } 192 }
170 } 193 }
171 close NTPDC; 194 close NTPDC;
172} 195}
173 196
174# An offset of 0.000000 with an error is probably bogus. Actually,
175# it's probably always bogus, but let's be paranoid here.
176if ($ntpdate_error && $offset && ($offset == 0)) { undef $offset;}
177 197
178if ($ntpdate_error > $ERRORS{'OK'}) { 198if ($ntpdate_error != $ERRORS{'OK'}) {
179 $state = $ntpdate_error; 199 $state = $ntpdate_error;
180 $answer = "Server for ntp probably down\n"; 200 $answer = $msg . "Server for ntp probably down\n";
181 if (defined($offset) && abs($offset) > $critical) { 201 if (defined($offset) && abs($offset) > $critical) {
182 $state = $ERRORS{'CRITICAL'}; 202 $state = $ERRORS{'CRITICAL'};
183 $answer = "Server Error and time difference $offset seconds greater than +/- $critical sec\n"; 203 $answer = "Server Error and time difference $offset seconds greater than +/- $critical sec\n";
@@ -185,7 +205,7 @@ if ($ntpdate_error > $ERRORS{'OK'}) {
185 $answer = "Server error and time difference $offset seconds greater than +/- $warning sec\n"; 205 $answer = "Server error and time difference $offset seconds greater than +/- $warning sec\n";
186 } 206 }
187 207
188} elsif ($dispersion_error > $ERRORS{'OK'}) { 208} elsif ($dispersion_error != $ERRORS{'OK'}) {
189 $state = $dispersion_error; 209 $state = $dispersion_error;
190 $answer = "Dispersion too high\n"; 210 $answer = "Dispersion too high\n";
191 if (defined($offset) && abs($offset) > $critical) { 211 if (defined($offset) && abs($offset) > $critical) {