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[/] [trunk/] [tools/] [warnings.pl] - Blame information for rev 36

 

Line No. Rev Author Line
11simandl#!/usr/bin/env perl
2 
3my $NAME="warnings.pl";
4 
5# check commandline arguments
6#
7my $cmd=shift;
8if ($cmd eq "-p") { print_rows(@ARGV); }
9elsif ($cmd eq "-c") { check_thresholds(@ARGV); }
10else { helptext(); exit; }
11 
12sub check_thresholds {
13 if ( ($#ARGV != 6) && ($#ARGV != 11) ) {
14print "\nUSAGE: $NAME -c <module> <database> <row> <consolidation> <timespan> <lt|eq|gt> <threshold> [-m <> <> <> <>]\n\n";
15 exit;
16 }
17 $module=shift;
18 $db=shift;
19 $row=shift;
20 $consolidation=shift;
21 $time=shift;
22 $func=shift;
23 $threshold=shift;
24 
25 
26 open LINES,"rrdtool fetch ./modules/$module/rrd/$db.rrd -s -$time $consolidation|";
27 @lines=<LINES>;
28 close LINES;
29 
30 print @lines;
31 
32 $caught=0;
33 $num=-1;
34 $vmin=999999999999999999;
35 $vmax=0;
36 
37 if ($func eq "gt") { $function="higher than"; }
38 elsif ($func eq "eq") { $function="equal"; }
39 elsif ($func eq "lt") { $function="lower than"; }
40 
41 foreach (@lines) {
42 # first line contains data-row names
43 if ($num == -1) {
44 chomp;
45 @names=split;
46 $num++;
47 next;
48 }
49 if ((! /nan/) && ( /:/)) {
50 # process lines containing valid values
51 chomp;
52 $num++;
53 @items=split;
54 $val=@items[$row];
55 $vsum+=$val;
56 $vmin=$val if $vmin>$val;
57 $vmax=$val if $vmax<$val;
58 if (($func eq "gt") && ($val>$threshold)) { $caught++; }
59 elsif (($func eq "eq") && ($val==$threshold)) { $caught++; }
60 elsif (($func eq "lt") && ($val<$threshold)) { $caught++; }
61 }
62 }
63 
64 # check if there was at least one valid line
65 if ($num > 0) { $vavg=$vsum/$num; } else { $vavg=-1; $num=-1; }
66 
67 if ($num == $caught) {
68 my @message;
69 ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
70 $year+=1900;
71 $mon++;
72 $dow=("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")[$wday];
73 if ($isdst) { $dst="(DST)"; } else { $dst=""; }
74 $mday="0".$mday if $mday<10;
75 $mon="0".$mon if $mon<10;
76 $sec="0".$sec if $sec<10;
77 $min="0".$min if $min<10;
78 $hour="0".$hour if $hour<10;
79 
80 my @message=("HotSaNIC THRESHOLD WARNING!","","Date : $dow, $year-$mon-$mday","Time : $hour:$min:$sec $dst","Module : $module","database: $db","data-row: ".@names[$row-1],"","","$consolidation value constantly $function $threshold over the last $time seconds.",(sprintf "minimum: %12.2f",$vmin),(sprintf "average: %12.2f",$vavg),(sprintf "maximum: %12.2f",$vmax),"");
81 
82 $cmd=shift;
83 if ($cmd eq "-m") {
84 print "sending...\n";
85 sendmail(@_,@message);
86 }
87 else { print join("\n",@message),"\n"; }
88 }
89 }
90 
91sub print_rows {
92 if ($#ARGV != 1) {
93 print "\nUSAGE: $NAME -p <module> <database>\n\n";
94 exit;
95 }
96 $module=shift;
97 $db=shift;
98 open LINES,"rrdtool fetch ./modules/$module/rrd/$db.rrd -s -1 MAX|";
99 ( $line=<LINES> ) =~ s/^\s*//g;
100 close LINES;
101 $n=1;
102 print "Row numbers for $module - $db.rrd\n";
103 foreach (split /\s+/,$line) { print $n++." -> $_\n"; }
104 exit;
105 }
106 
107 
108sub sendmail {
109 use Net::SMTP;
110 
111 my $SMTP_Host = shift || "";
112 my $account = shift || "dummy";
113 my $sender = shift || "hotsanic-system";
114 my $recipient = shift || "admin";
115 my @message = (@_);
116 unshift @message,"From: HotSaNIC <$sender>","";
117 unshift @message,"Subject: HotSaNIC threshold warning";
118 
119 # add line-breaks (\r\n) to text
120 @message = map { $_."\r\n" } @message;
121 
122 my $smtp = Net::SMTP->new( $SMTP_Host, Helo => $account, Debug => 0 );
123 my $OK;
124 
125 $OK = $smtp->mail($sender);
126 if (! $OK) { return "ERROR: sender unknown: \"$sender\""; }
127 
128 $OK = $smtp->recipient( $recipient );
129 if (! $OK) { return "ERROR: recipient invalid: \"$recipient\""; }
130 
131 # Nachricht senden
132 $OK = $smtp->data(\@message);
133 if (! $OK) { return "ERROR: message could not be delivered: \"$!\""; }
134 
135 # Ordungsgemäss beim Server abmelden
136 $OK = $smtp->quit();
137 if (! $OK) { return "ERROR: could not close connection.\"$!\""; }
138 }
139 
140 
141sub helptext {
142 print "
143USAGE:
144 
145$NAME -c <module> <database> <row> <consolidation> <timespan> <lt|eq|gt> <threshold>
146 check the given database for given events and print results to running shell.
147 
148$NAME -p <module> <database>
149 print DB-internal names.
150 
151$NAME -c ... -m <SMTPhost> <SMTPaccount> <sender> <recipient>
152 mails the results in the given way
153 
154$NAME -f config_file
155 check all targets configured in config_file. (not implemented yet!)
156 
157 
158 <module> name of the module to query (you have to be in the HotSaNIC main directory)
159 
160 <database> name of the database to query
161 
162 <data-row-number> number of the database-row
163 \"?\" to show row names
164 
165 [MAX|MIN|AVERAGE] consolidation function of the data-row you like to query
166 
167 <timespan> timespan backwards from now in seconds
168 
169 [lt|eq|gt] threshold functions
170 lt -> test if values are less than <threshold>
171 eq -> test if values are equal <threshold>
172 gt -> test if values are greater than <threshold>
173 
174 <threshold> threshold value
175 
176 example:
177 
178 $NAME -c traffic eth0 1 MAX 120 gt 100000
179 generates a warning message if the incoming traffic (row 1) of the traffic on eth0 exceeded 100000 bytes/s over the last 2 minutes
180 
181 $NAME -c system cpu 4 MAX 120 lt 0.3
182 generates a warning message if the idle-time (row 4) of your CPU was constantly lower than 30% over the last 2 minutes
183\n";
184 }
185 

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