From b408390ae9311b7d703ce57c25a78dce23c31b16 Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Wed, 10 Jun 2015 15:35:13 +0200
Subject: Configure munin nodes & master.

Interhost communications are protected by stunnel4.  The graphs are only
visible on the master itself, and content is generated by Fast CGI.
---
 .../usr/local/share/munin/plugins/postfix_stats_   | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100755 roles/common/files/usr/local/share/munin/plugins/postfix_stats_

(limited to 'roles/common/files/usr/local/share/munin/plugins/postfix_stats_')

diff --git a/roles/common/files/usr/local/share/munin/plugins/postfix_stats_ b/roles/common/files/usr/local/share/munin/plugins/postfix_stats_
new file mode 100755
index 0000000..5678870
--- /dev/null
+++ b/roles/common/files/usr/local/share/munin/plugins/postfix_stats_
@@ -0,0 +1,113 @@
+#!/bin/sh
+
+# Munin plugin for monitoring Postfix per-service and per-instance
+# usage.  Symlink/rename to 'postfix_sasl_$SERVICE_$SYSLOGNAME'.
+# Copyright © 2015 Guilhem Moulin <guilhem@fripost.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, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+PATH=/usr/bin:/bin:/usr/sbin:/sbin
+set -u
+
+LOGFILE="/var/log/${logfile:-mail.log}"
+STATEFILE="$MUNIN_PLUGSTATE/${0##*/}.offset"
+
+name="${0##*/}"
+name="${name#postfix_stats_}"
+
+if [ "${name#postscreen_}" != "$name" ]; then
+    postfix="${name#postscreen_}"
+    service=postscreen
+    fields='connected accepted passed'
+elif [ "${name#smtpd_}" != "$name" ]; then
+    postfix="${name#smtpd_}"
+    service=smtpd
+    fields='connected accepted queued'
+elif [ "${name#qmgr_}" != "$name" ]; then
+    postfix="${name#qmgr_}"
+    service=qmgr
+    fields='queued'
+elif [ "${name#smtp_}" != "$name" ]; then
+    postfix="${name#smtp_}"
+    service=smtp
+    fields='sent deliverable deferred undeliverable bounced'
+elif [ "${name#lmtp_}" != "$name" ]; then
+    postfix="${name#lmtp_}"
+    service=lmtp
+    fields='sent deliverable deferred undeliverable bounced'
+elif [ "${name#pipe_}" != "$name" ]; then
+    postfix="${name#pipe_}"
+    service=pipe
+    fields='sent deliverable deferred undeliverable bounced'
+fi
+
+case "${1:-}" in
+    config) cat <<- EOF
+		graph_title Postfix $service message throughput ($([ -n "$postfix" -a "$postfix" != postfix ] && echo "'${postfix#postfix-}'" || echo default) instance)
+		graph_vlabel mails per \${graph_period}
+		graph_args --base 1000 -l 0
+		graph_scale no
+		graph_period minute
+		graph_category postfix
+	EOF
+    for field in $fields; do
+        echo "$field.label $field"
+        echo "$field.type DERIVE"
+        echo "$field.draw AREA"
+        echo "$field.min 0"
+    done
+    exit 0
+    ;;
+esac
+
+if [ ! -f "$LOGFILE" ]; then
+    for field in $fields; do
+        echo "$field.value U"
+    done
+    exit 0;
+fi
+
+tmpfile="$(mktemp --tmpdir)"
+trap 'rm -f "$tmpfile"' EXIT
+
+logtail -f"$LOGFILE" -o"$STATEFILE" | sed -nr "s#^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ $postfix/$service\[[[:digit:]]+\]: ##p" >"$tmpfile"
+
+case "$service" in
+    postscreen)
+        connected=$(grep -Ec "^CONNECT from\s"                 "$tmpfile")
+        rejected=$( grep -Ec "^NOQUEUE: reject:\s"             "$tmpfile")
+        passed=$(   grep -Ec "^(PASS (OLD|NEW)|WHITELISTED)\s" "$tmpfile")
+        echo connected.value $connected
+        echo accepted.value $(($rejected + $passed))
+        echo passed.value   $passed
+    ;;
+    smtpd)
+        connected=$(grep -Ec "^connect from\s"         "$tmpfile")
+        rejected=$( grep -Ec "^NOQUEUE: reject:\s"     "$tmpfile")
+        queued=$(   grep -Ec "^[[:xdigit:]]+: client=" "$tmpfile")
+        echo connected.value $connected
+        echo accepted.value  $(($rejected + $queued))
+        echo queued.value    $queued
+    ;;
+    qmgr)
+        queued=$(grep -Ec "^[[:xdigit:]]+: from=<\S+>, .*\(queue active\)$" "$tmpfile")
+        echo queued.value $queued
+    ;;
+    smtp|lmtp|pipe)
+        for field in $fields; do
+            v=$(grep -Ec "^[[:xdigit:]]+:( [^ =]+=\S+,)+ status=$field(\s.*)?$" "$tmpfile")
+            echo $field.value $v
+        done
+    ;;
+esac
-- 
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