annotate common/logwatch/scripts_mysql @ 0:956e484adc12

Initial public release of Puppet configs
author IBBoard <dev@ibboard.co.uk>
date Sat, 16 Aug 2014 19:47:38 +0000
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1 #!/usr/bin/perl -w
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2 #
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3 # $Id$
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4 #
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5 # Logwatch service for mysqld error log
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6 # To be placed in
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7 # /etc/logwatch/scripts/mysql
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8 #
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9 # Processes all messages and summarizes them
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10 # Each message is given with a timestamp and RMS
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11 #
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12 # (C) 2006 by Jeremias Reith <jr@terragate.net>
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13 # Modified 2009 by Michael Baierl
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14
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15
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16 use strict;
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17 use Logwatch ':dates';
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18 use Time::Local;
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19 use POSIX qw(strftime);
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20
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21 my $date_format = '%y%m%d %H:%M:%S';
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22 my $filter = TimeFilter($date_format);
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23 my $detail = exists $ENV{'LOGWATCH_DETAIL_LEVEL'} ? $ENV{'LOGWATCH_DETAIL_LEVEL'} : 0;
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24
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25 # we do not use any Date:: package (or strptime) as they are probably not available
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26 my %month2num = ( Jan => 0, Feb => 1, Mar => 2, Apr => 3,
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27 May => 4, Jun => 5, Jul => 6, Aug => 7,
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28 Sep => 8, Oct => 9, Nov => 10, Dec => 11 );
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29
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30 # array of message categories (we do not use a hash to keep the order)
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31 # first element: catorory name
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32 # second element: matching regexp ($1 should contain the message)
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33 # third element: anonymous hash ref (stores message counts)
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34 my @message_categories = (['Errors', qr/\[ERROR\] (.*)$/o, {}],
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35 ['Note', qr/\[Note\] (.*)$/o, {}],
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36 ['Other', qr/(.*)$/o, {}]);
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37
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38 # counting messages
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39 while(<>) {
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40 my $line = $_;
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41 # skipping messages that are not within the requested range
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42 next unless $line =~ /^($filter)/o;
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43 $1 =~ /(\d\d)(\d\d)(\d\d)\s+(\d+):(\d+):(\d+)/;
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44 my $time;
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45
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46 {
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47 # timelocal is quite chatty
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48 local $SIG{'__WARN__'} = sub {};
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49 $time = timelocal($6, $5, $4, $3, $2-1, $1);
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50 }
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51
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52 foreach my $cur_cat (@message_categories) {
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53 if($line =~ /$cur_cat->[1]/) {
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54 my $msgs = $cur_cat->[2];
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55 $msgs->{$1} = {count => '0',
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56 first_occurrence => $time,
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57 sum => 0,
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58 sqrsum => 0} unless exists $msgs->{$1};
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59 $msgs->{$1}->{'count'}++;
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60 # summing up timestamps and squares of timestamps
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61 # in order to calculate the rms
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62 # using first occurrence of message as offset in calculation to
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63 # prevent an integer overflow
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64 $msgs->{$1}->{'sum'} += $time - $msgs->{$1}->{'first_occurrence'};
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65 $msgs->{$1}->{'sqrsum'} += ($time - $msgs->{$1}->{'first_occurrence'}) ** 2;
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66 last;
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67 }
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68 }
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69 }
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70
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71
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72 # generating summary
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73 foreach my $cur_cat (@message_categories) {
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74 # skipping non-requested message types
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75 next unless keys %{$cur_cat->[2]};
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76 my ($name, undef, $msgs) = @{$cur_cat};
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77 print $name, ":\n";
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78 my $last_count = 0;
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79
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80 # sorting messages by count
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81 my @sorted_msgs = sort { $msgs->{$b}->{'count'} <=> $msgs->{$a}->{'count'} } keys %{$msgs};
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82
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83 foreach my $msg (@sorted_msgs) {
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84 # grouping messages by number of occurrence
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85 print "\n", $msgs->{$msg}->{'count'}, " times:\n" unless $last_count == $msgs->{$msg}->{'count'};
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86 my $rms = 0;
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87
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88
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89 # printing timestamp
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90 print '[';
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91
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92 if($msgs->{$msg}->{'count'} > 1) {
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93 # calculating rms
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94 $rms = int(sqrt(
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95 ($msgs->{$msg}->{'count'} *
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96 $msgs->{$msg}->{'sqrsum'} -
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97 $msgs->{$msg}->{'sum'}) /
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98 ($msgs->{$msg}->{'count'} *
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99 ($msgs->{$msg}->{'count'} - 1))));
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100
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101 print strftime($date_format, localtime($msgs->{$msg}->{'first_occurrence'}+int($rms/2)));
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102
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103 print ' +/-';
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104
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105 # printing rms
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106 if($rms > 86400) {
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107 print int($rms/86400) , ' day(s)';
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108 } elsif($rms > 3600) {
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109 print int($rms/3600) , ' hour(s)';
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110 } elsif($rms > 60) {
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111 print int($rms/60) , ' minute(s)';
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112 } else {
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113 print $rms, ' seconds';
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114 }
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115 } else {
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116 # we have got this message a single time
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117 print strftime($date_format, localtime($msgs->{$msg}->{'first_occurrence'}));
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118 }
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119
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120 print '] ', $msg, "\n";
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121 $last_count = $msgs->{$msg}->{'count'};
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122 }
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123
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124 print "\n";
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125 }
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126