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postfix_mailstats_
Name
postfix_mailstats_ - Plugin to monitor the number of mails delivered and rejected by postfix
Configuration
Uses the last part of the symlink name for grepping the correct data from the postfix log file. The name must be syslog_name from the postfix config. The environment settings still apply to this plugin.
Configuration parameters for /etc/munin/postfix_mailstats_, if you need to override the defaults below:
[postfix_mailstats]
env.logdir - Which logfile to use
env.logfile - What file to read in logdir
Default Configuration
[postfix_mailstats]
env.logdir /var/log
env.logfile mail.log
Author
Records show that the plugin was contributed by Nicolai Langfeldt in 2003. Nicolai can’t find anything in his email about this and expects the plugin is based on the corresponding exim plugin - to which it now bears no resemblance.
Extended for multiple queue use by Clemens Schwaighofer (gullevek@gullevek.org) in 2010.
License
GPLv2
Magic Markers
#%# family=manual
#%# capabilities=autoconf
Random Comments
Would be cool if someone ported this to Munin::Plugin for both state file and log tailing.
#!/usr/bin/perl -w
# -*- perl -*-
=head1 NAME
postfix_mailstats_ - Plugin to monitor the number of mails delivered and
rejected by postfix
=head1 CONFIGURATION
Uses the last part of the symlink name for grepping the correct data from the
postfix log file. The name must be syslog_name from the postfix config.
The environment settings still apply to this plugin.
Configuration parameters for /etc/munin/postfix_mailstats_,
if you need to override the defaults below:
[postfix_mailstats]
env.logdir - Which logfile to use
env.logfile - What file to read in logdir
=head2 DEFAULT CONFIGURATION
[postfix_mailstats]
env.logdir /var/log
env.logfile mail.log
=head1 AUTHOR
Records show that the plugin was contributed by Nicolai Langfeldt in
2003. Nicolai can't find anything in his email about this and expects
the plugin is based on the corresponding exim plugin - to which it now
bears no resemblance.
Extended for multiple queue use by Clemens Schwaighofer (gullevek@gullevek.org) in 2010.
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
=begin comment
These magic markers are used by munin-node-configure when installing
munin-node.
=end comment
#%# family=manual
#%# capabilities=autoconf
=head1 RANDOM COMMENTS
Would be cool if someone ported this to Munin::Plugin for both state
file and log tailing.
=cut
# get the postfix queue number to look for
$0 =~ /postfix_mailstats_([\w\d\-]+)$/;
my $postfix = $1;
my $statefile = "$ENV{MUNIN_PLUGSTATE}/munin-plugin-".$postfix."_mailstats.state";
my $pos;
my $delivered = 0;
my $rejects = {};
my $LOGDIR = $ENV{'logdir'} || '/var/log';
my $LOGFILE = $ENV{'logfile'} || 'mail.log';
my $logfile = "$LOGDIR/$LOGFILE";
if ($ARGV[0] and $ARGV[0] eq "autoconf")
{
my $logfile;
if (-d $LOGDIR)
{
if (-f $logfile)
{
if (-r $logfile)
{
print "yes\n";
exit 0;
}
else
{
print "no (logfile '$logfile' not readable)\n";
}
}
else
{
print "no (logfile '$logfile' not found)\n";
}
}
else
{
print "no (could not find logdir '$LOGDIR')\n";
}
exit 0;
}
if (-f $statefile)
{
open (IN, '<', $statefile) or die "Unable to open state-file: $!\n";
if (<IN> =~ /^(\d+):(\d+)/)
{
($pos, $delivered) = ($1, $2);
}
while (<IN>)
{
if (/^([0-9a-z.\-]+):(\d+)$/)
{
$rejects->{$1} = $2;
}
}
close IN;
}
if (! -f $logfile)
{
print "delivered.value U\n";
foreach my $i (sort keys %{$rejects})
{
print "r$i.value U\n";
}
exit 0;
}
$startsize = (stat $logfile)[7];
if (!defined $pos)
{
# Initial run.
$pos = $startsize;
}
parseLogfile($logfile, $pos, $startsize);
$pos = $startsize;
if ( $ARGV[0] and $ARGV[0] eq "config" )
{
print "graph_title Postfix message throughput for $postfix\n";
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel mails / \${graph_period}\n";
print "graph_scale no\n";
print "graph_total Total\n";
print "graph_category mail\n";
print "delivered.label delivered\n";
print "delivered.type DERIVE\n";
print "delivered.draw AREA\n";
print "delivered.min 0\n";
foreach my $i (sort keys %{$rejects})
{
print "r$i.label reject $i\n";
print "r$i.type DERIVE\n";
print "r$i.draw STACK\n";
print "r$i.min 0\n";
}
exit 0;
}
print "delivered.value $delivered\n";
foreach my $i (sort keys %{$rejects})
{
print "r$i.value ", $rejects->{$i}, "\n";
}
if (-l $statefile)
{
die ("$statefile is a symbolic link, refusing to touch it.");
}
open (OUT, '>', $statefile) or die "Unable to open statefile: $!\n";
print OUT "$pos:$delivered\n";
foreach my $i (sort keys %{$rejects})
{
print OUT "$i:", $rejects->{$i}, "\n";
}
close OUT;
sub parseLogfile
{
my ($fname, $start, $stop) = @_;
open (LOGFILE, $fname)
or die "Unable to open logfile $fname for reading: $!\n";
seek (LOGFILE, $start, 0)
or die "Unable to seek to $start in $fname: $!\n";
while (tell (LOGFILE) < $stop)
{
my $line = <LOGFILE>;
chomp ($line);
if ($line =~ /$postfix\/qmgr.*from=.*size=[0-9]*/ ||
$line =~ /$postfix\/smtp.* status=sent /)
{
$delivered++;
}
elsif ($line =~ /$postfix\/smtpd.*reject: \S+ \S+ \S+ (\S+)/ ||
$line =~ /$postfix\/cleanup.* reject: (\S+)/)
{
$rejects->{$1}++;
}
}
close(LOGFILE) or warn "Error closing $fname: $!\n";
}
# vim:syntax=perl