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journald support of dovecot inspired by the sshd_log plugin (#1453)

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* journald support of dovecot inspired by the sshd_log plugin

* fix indentation

Co-authored-by: Kenyon Ralph <kenyon@kenyonralph.com>

* fix indentation

---------

Co-authored-by: Kenyon Ralph <kenyon@kenyonralph.com>
This commit is contained in:
Stephan Kleber 2024-09-15 01:11:35 +02:00 • committed by GitHub
parent 4e17f844d6
commit 86e3466b9c
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1 changed files with 78 additions and 77 deletions
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155
plugins/dovecot/dovecot
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@ -9,6 +9,9 @@
# - Stephane Enten <tuf@delyth.net> # - Stephane Enten <tuf@delyth.net>
# - Steve Schnepp <steve.schnepp@pwkf.org> # - Steve Schnepp <steve.schnepp@pwkf.org>
# - pcy <pcy@ulyssis.org> (make 'Connected Users' DERIVE, check existence of logfile in autoconf) # - pcy <pcy@ulyssis.org> (make 'Connected Users' DERIVE, check existence of logfile in autoconf)
# - Stephan Kleber <stephan@kleber.space>: journald support inspired by the sshd_log plugin
#
# This plugin requires read permission for the logfile or journald.
# #
# Parameters understood: # Parameters understood:
# #
@ -17,7 +20,10 @@
# #
# Config variables: # Config variables:
# #
# logfile - Where to find the syslog file # logfile - Where to find the syslog file or "journald" to use journald.
# journalctlargs - space separated list of arguments to pass to
# journalctl to get the sshd logs.
# default: "-u dovecot"
# #
# Add the following line to a file in /etc/munin/plugin-conf.d: # Add the following line to a file in /etc/munin/plugin-conf.d:
# env.logfile /var/log/your/logfile.log # env.logfile /var/log/your/logfile.log
@ -31,98 +37,93 @@
# Configuration # Configuration
###################### ######################
LOGFILE=${logfile:-/var/log/mail.log} LOGFILE=${logfile:-/var/log/mail.log}
JOURNALCTL_ARGS=${journalctlargs:--u dovecot}
TYPE=${type:-GAUGE}
###################### ######################
if [ "$LOG" = "journald" -a "$TYPE" = "DERIVE" ]; then
TYPE=ABSOLUTE
fi
if [ "$1" = "autoconf" ]; then if [ "$1" = "autoconf" ]; then
[ -f "$LOGFILE" ] && echo yes || echo "no (logfile $LOGFILE not found)" if [ "$LOGFILE" = "journald" ]; then
exit 0 # shellcheck disable=SC2086,SC2034
if journalctl --no-pager --quiet --lines=1 $JOURNALCTL_ARGS | read -r DUMMY; then
echo "yes"
else
echo "no (journald empty log for '$JOURNALCTL_ARGS' not found)"
fi
else
if [ -r "$LOGFILE" ]; then
echo "yes"
else
echo "no (logfile '$LOGFILE' not readable)"
fi
fi
exit 0
fi fi
if [ "$1" = "config" ]; then if [ "$1" = "config" ]; then
echo 'graph_title Dovecot Logins' echo 'graph_title Dovecot Logins'
echo 'graph_category mail' echo 'graph_category mail'
echo 'graph_args --base 1000 -l 0' echo 'graph_args --base 1000 -l 0'
echo 'graph_vlabel Login Counters' echo 'graph_vlabel Login Counters'
for t in Total TLS SSL IMAP POP3 for t in Total TLS SSL IMAP POP3
do do
field=$(echo $t | tr '[:upper:]' '[:lower:]') field=$(echo $t | tr '[:upper:]' '[:lower:]')
echo "login_$field.label $t Logins" echo "login_$field.label $t Logins"
echo "login_$field.type DERIVE" echo "login_$field.type DERIVE"
echo "login_$field.min 0" echo "login_$field.min 0"
done done
echo 'connected.label Connected Users' echo 'connected.label Connected Users'
echo "connected.type DERIVE" echo "connected.type ABSOLUTE"
exit 0 exit 0
fi fi
if [ "$LOGFILE" = "journald" -a "$TYPE" = "ABSOLUTE" ]; then
CURSOR_FILE="$MUNIN_STATEFILE"
# read cursor
# format: "journald-cursor <cursor>"
CURSOR=
if [ -f "$CURSOR_FILE" ]; then
CURSOR=$(awk '/^journald-cursor / {print $2}' "$CURSOR_FILE")
fi
else
CURSOR_FILE=
fi
if [ "$LOGFILE" = "journald" ]; then
# shellcheck disable=SC2086
if [ "$TYPE" = "ABSOLUTE" ]; then
journalctl --no-pager --quiet --show-cursor ${CURSOR:+"--after-cursor=$CURSOR"} $JOURNALCTL_ARGS
else
journalctl --no-pager --quiet --since=$(date -dlast-sunday +%Y-%m-%d) $JOURNALCTL_ARGS
fi
else
cat "$LOGFILE"
fi | \
awk -v cursor_file="$CURSOR_FILE" -v connected="$(doveadm who -1 | expr $(wc -l) - 1)" 'BEGIN{c["login_total"]=0;c["connected"]=connected;c["login_tls"]=0;c["login_ssl"]=0;c["login_imap"]=0;c["login_pop3"]=0; }
/dovecot\[.*Login/{c["login_total"]++}
/dovecot\[.*Login.*TLS/{c["login_tls"]++}
/dovecot\[.*Login.*SSL/{c["login_ssl"]++}
/dovecot\[.*imap.*Login/{c["login_imap"]++}
/dovecot\[.*pop3.*Login/{c["login_pop3"]++}a
END{if (cursor_file != "") { print "journald-cursor " $3 > cursor_file };
for(i in c){print i".value " c[i]} }'
###################### ######################
# Total Logins # Total Logins
###################### # use doveadm instead of
echo -en "login_total.value " # /dovecot\[.*Disconnected/{c["connected"]++}
VALUE=$(egrep -c '[dovecot]?.*Login' $LOGFILE) # and
if [ ! -z "$VALUE" ]; then # {c["connected"]=c["login_total"]-c["connected"]}; {if (c["connected"] < 0) {c["connected"] = 0}};
echo "$VALUE"
else
echo "0"
fi
echo -n
######################
# Connected Users # Connected Users
###################### # VALUE=$(( CONNECTS - DISCONNECTS ))
DISCONNECTS=$(egrep -c '[dovecot]?.*Disconnected' $LOGFILE)
CONNECTS=$(egrep -c '[dovecot]?.*Login' $LOGFILE)
VALUE=$(( CONNECTS - DISCONNECTS ))
if [ -z "$VALUE" ] || [ "$VALUE" -lt 0 ]; then
VALUE=0
fi
echo -en "connected.value "
echo $VALUE
echo -n
######################
# TLS Logins # TLS Logins
######################
echo -en "login_tls.value "
VALUE=$(egrep -c '[dovecot]?.*Login.*TLS' $LOGFILE)
if [ ! -z "$VALUE" ]; then
echo "$VALUE"
else
echo "0"
fi
echo -n
######################
# SSL Logins # SSL Logins
######################
echo -en "login_ssl.value "
VALUE=$(egrep -c '[dovecot]?.*Login.*SSL' $LOGFILE)
if [ ! -z "$VALUE" ]; then
echo "$VALUE"
else
echo "0"
fi
echo -n
######################
# IMAP Logins # IMAP Logins
######################
echo -en "login_imap.value "
VALUE=$(egrep -c '[dovecot]?.*imap.*Login' $LOGFILE)
if [ ! -z "$VALUE" ]; then
echo "$VALUE"
else
echo "0"
fi
echo -n
######################
# POP3 Logins # POP3 Logins
###################### ######################
echo -en "login_pop3.value "
VALUE=$(egrep -c '[dovecot]?.*pop3.*Login' $LOGFILE)
if [ ! -z "$VALUE" ]; then
echo "$VALUE"
else
echo "0"
fi
echo -n