add plugins

Dockerfile

@@ -36,6 +36,9 @@ COPY ssmtp.conf /etc/ssmtp/ssmtp.conf
 COPY revaliases /etc/ssmtp/revaliases
 COPY munin_mail.conf /etc/munin/munin-conf.d/munin_mail.conf
 
+COPY munin_stats /etc/munin/plugins/munin_stats
+COPY munin_update /etc/munin/plugins/munin_update
+
 # copy launcher
 COPY run.sh /usr/local/bin/run
 RUN chmod +x /usr/local/bin/run

munin.conf

@@ -1,3 +1,5 @@
 includedir /etc/munin/munin-conf.d
 
+munin-server:127.0.0.1
+
 # remote host

munin_stats

@@ -0,0 +1,118 @@
+#!/usr/bin/perl
+#
+# Copyright (C) 2006-2009 Rodolphe Quiédeville <rodolphe@quiedeville.org>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; version 2 dated June,
+# 1991.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+#
+# Magic markers (used by munin-node-configure and some installation scripts):
+#%# family=auto
+#%# capabilities=autoconf
+
+use strict;
+use warnings;
+
+use Munin::Plugin;
+
+
+my $missing_module = undef;
+$missing_module = "File::ReadBackwards" unless (eval "require File::ReadBackwards");
+
+my @logs = qw/update graph html limits/;
+my $logdir = ($ENV{'logdir'} || $ENV{'MUNIN_LOGDIR'} || '/var/log/munin');
+
+if ($ENV{'fields'}) {
+	@logs = split(/ +/, $ENV{'fields'});
+}
+
+sub uses_graph_cron {
+    my $log_file = $_[0];
+    my $bw = File::ReadBackwards->new($log_file) or
+                            die "can't read 'log_file' $!";
+    if (defined(my $log_line = $bw->readline)) {
+        if ($log_line =~ ('.*graphing is cgi, do nothing$')) {
+            return 0;
+        } else {
+            return 1;
+        }
+    } else {
+        return 1;
+    }
+}
+
+
+if ($ARGV[0] and $ARGV[0] eq 'autoconf') {
+    my $munin_update_location =
+                "$Munin::Common::Defaults::MUNIN_LIBDIR/munin-update";
+
+    if (! -e $munin_update_location) {
+        print "no (munin-update was not found at $munin_update_location)\n";
+    } elsif (! -x $munin_update_location) {
+        print "no ($munin_update_location was found, but is not executable)\n";
+    } elsif (defined($missing_module)) {
+        print "no (missing Perl module: '$missing_module')\n";
+    } else {
+        print "yes\n";
+    }
+    exit 0;
+}
+
+if ($ARGV[0] and $ARGV[0] eq "config") {
+    print "graph_title Munin processing time\n",
+          "graph_info This graph shows the run time of the four different processes making up a munin-master run.  Munin-master is run from cron every 5 minutes and we want each of the programmes in munin-master to complete before the next instance starts. If munin-update uses too long time to run please see the munin-update graph to determine which host is slowing it down.\n",
+          "graph_args --base 1000 -l 0\n",
+          "graph_scale yes\n",
+          "graph_vlabel seconds\n",
+          "graph_category munin\n";
+    foreach my $log (@logs) {
+        print "$log.label munin $log\n";
+	print "$log.draw AREASTACK\n";
+
+	next unless $log eq "update" || $log eq "graph";
+
+        print_thresholds("$log", undef, undef, 240, 285);
+    }
+    exit 0;
+}
+
+
+if (defined($missing_module)) {
+    die "Failed to run due to missing Perl module '$missing_module'";
+}
+
+foreach my $log (@logs) {
+    my $logfile = "$logdir/munin-$log.log";
+    my $time = 'U';
+
+    if (! -r $logfile) {
+        print "$log.extinfo Can't open $logfile for reading\n";
+        print "$log.value $time\n";
+        next;
+    }
+
+    my $bw = File::ReadBackwards->new("$logdir/munin-$log.log") or
+                            die "can't read 'log_file' $!";
+    my $found_previous_finished = 0;
+    while(defined(my $log_line = $bw->readline) && $found_previous_finished == 0) {
+        if ($log_line =~ (/(finished|generated) \((\d+\.\d+)\ssec\)$/)) {
+            $time = $2;
+            $found_previous_finished = 1;
+        }
+    }
+
+    if ($log ne "graph" || uses_graph_cron("$logdir/munin-$log.log")) {
+        print "$log.value $time\n";
+    }
+}

munin_update

@@ -0,0 +1,123 @@
+#!/bin/sh
+
+: <<=cut
+
+=head1 NAME
+
+munin_update - Munin plugin to graph the time to query about each host from the nodes.
+
+=head1 APPLICABLE SYSTEMS
+
+Munin master servers.
+
+=head1 CONFIGURATION
+
+Normally needs no configuration.  You may configure it with the
+following parameter:
+
+  [munin*]
+      env.UPDATE_STATSFILE .../munin-update.stats
+      env.MUNIN_UPDATE_LOCACTION .../munin-update
+
+The first is the statistics file for munin update.
+
+The exact location of this file is package/site specific, but
+munin_update will know where it is unless you have made changes.
+
+=head1 INTERPRETATION
+
+The script reads the munin-update "stats" file to determine how long
+it takes to query the nodes about each host configured in Munin.
+
+Munin is run from cron every 5 minutes and before the next run of
+munin-update the previous run needs to be done.  Each run of
+munin-update forks one process pr. host that needs to get data
+collected, so all collection runs in parallel.
+
+Any host that is slow, for example slower than 4 miniutes, causes a
+risk that the next run of munin-update must be canceled due to the
+lateness of the previous run.  In such cases there will be single line
+gaps in the "by day" graph.
+
+Keep your hosts updating quickly and all will be well.
+
+=head1 MAGIC MARKERS
+
+  #%# family=manual
+  #%# capabilities=autoconf
+
+=head1 BUGS
+
+Munin-update is always run at the same time as this plugin runs -
+therefore the stats file may be incompletely written and the plugin
+will likely show a incomplete list of hosts.  It should be using
+munin-update.old-stats, which is not currently even made.
+
+Munin-update removes the "domain" information on all hosts.  If there
+are two hosts with the same host name in different domains then one of
+them will be disappeared by the munin-update collection process.
+
+=head1 AUTHOR
+
+The munin_update plugin has been included in munin for many years (at
+least 2004).  The most likely author is one of the original munin team.
+
+Documentation and updating to 2009 for Munin 1.4 by Nicolai Langfeldt.
+
+(C) 2004-2009 The Munin Team, Redpill Linpro AS
+
+=head1 LICENSE
+
+GPLv2
+
+=cut
+
+. "$MUNIN_LIBDIR/plugins/plugin.sh"
+
+
+UPDATE_STATSFILE=${UPDATE_STATSFILE:-$MUNIN_DBDIR/munin-update.stats}
+MUNIN_UPDATE_LOCATION=${MUNIN_UPDATE_LOCATION:-$MUNIN_LIBDIR/munin-update}
+
+
+if [ "$1" = "autoconf" ]; then
+	if [ -e "$MUNIN_UPDATE_LOCATION" ] ; then
+	    echo "yes"
+	else
+	    echo "no ($MUNIN_UPDATE_LOCATION is not present so this is not a munin-master)"
+	fi
+	exit 0
+fi
+
+if [ "$1" = "config" ]; then
+	[ -f "$UPDATE_STATSFILE" ] || {
+	    echo 'graph_title Plugin error'
+	    echo "graph_info  Plugin cannot read stats file $UPDATE_STATSFILE"
+	    echo 'error.label Error'
+	    echo 'error.critical 1'
+	    exit 0
+	}
+
+	echo 'graph_title Munin-update'
+	echo 'graph_vlabel seconds'
+	echo 'graph_category munin'
+	echo 'graph_info This graph shows the time it takes to collect data from each hosts that munin collects data on. Munin-master is run from cron every 5 minutes and we want each of the munin-update runs to complete before the next one starts.  If munin-update uses too long time to run on one host run it with --debug to determine which plugin(s) are slow and solve the problem with them if possible.'
+	sed '/^UD|/!d; s/.*;//; s/|/ /;' < "$UPDATE_STATSFILE" | sort |
+	while read -r i j; do
+            name="$(clean_fieldname "$i")"
+	    echo "$name.label $i"
+	    warning=${warning:-240} critical=${critical:-285} print_thresholds "$name"
+	done
+	exit 0
+fi
+
+[ -f "$UPDATE_STATSFILE" ] || {
+    echo 'error.value 1'
+    echo "error.extinfo Plugin cannot read stats file $UPDATE_STATSFILE"
+    exit 0
+}
+
+sed '/^UD|/!d; s/.*;//; s/|/ /;' < "$UPDATE_STATSFILE" | sort |
+while read -r i j; do
+        name="$(clean_fieldname "$i")"
+	echo "$name.value $j"
+done

run.sh

@@ -23,10 +23,6 @@ sed -i "s/^\( *address\) 127\.0\.0\.1\$/\1 $THISNODEIP/" /etc/munin/munin.conf
 THISSERVERNAME=${SERVERNAME:="munin"}
 sed -i "s/^\[localhost\.localdomain\]/\[$SERVERNAME\]/g" /etc/apache2/sites-available/000-default.conf
 
-if [[ $DISABLELOCALNODE == "yes" ]] ; then
-  echo "includedir /etc/munin/munin-conf.d" > /etc/munin/munin.conf
-fi
-
 # configure mail notification
 
 if [[ -n "$MAILCONTACT" && -n "$MAILSERVER" && -n "$MAILPORT" && -n "$MAILUSER" && -n "$MAILPASSWORD" && -n "$MAILDOMAIN" ]] ; then