/usr/share/munin/plugins/named is in munin-plugins-extra 2.0.37-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | #!/bin/sh
# -*- sh -*-
: << =cut
=head1 NAME
named - Plugin to monitor named statistics
=head1 ABOUT
This is a bit experimental, we will have to see which statistics prove to have
any meaning to get a feel with what happens on the nameserver.
=head1 USAGE
In your named.conf you must have statistics-interval set:
options {
...
statistics-interval 1;
...
};
The number is in minutes. At each interval just 3 lines is dumped. It can be
desturbing if you usually read the logs yourself, but a 1 minute interval
ensures very updated information to munin. 5 minutes is the maximum I'd say.
The name of the file where syslog puts daemon output - ie the named statistics
output. On solaris this is /var/adm/messages, on most linuxes it is
/var/log/messages. But on Debian it is /var/log/daemon.log which is read
restricted so we have to run as a group or user with read rights, or remove the
restrictions on the log file.
=head1 CONFIGURATION
Configuration parameters for /etc/munin/named,
if you need to override the defaults below:
[named]
env.logfile - set which log file to use
To ensure read access to the log files, you will need to add something like:
[named]
group adm
=head2 DEFAULT CONFIGURATION
[named]
env.logfile /var/adm/messages or /var/log/daemon.log
=head1 AUTHOR
Nicolai Langfeldt (janl@linpro.no) 27.8.2003
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
=begin comment
These magic markers are used by munin-node-configure when installing
munin-node.
=end comment
#%# family=contrib
=cut
if [ -n "$logfile" ]; then
SYSLOGFILE=$logfile
else
if [ -f /var/adm/messages ]; then
SYSLOGFILE=/var/adm/messages
else
SYSLOGFILE=/var/log/daemon.log
fi
fi
# ----------------------------------------------------------------------
pick_stat () {
ret=`echo "$2" | sed "s/.* *$1=\([0-9]*\).*/\1/"`
if [ ! "$ret" ]; then
echo 0;
else
echo $ret
fi
}
do_stats () {
if [ ! -f $SYSLOGFILE ] ; then
echo $SYSLOGFILE is unavailable to me >&2
exit 1
fi
# Get out the last XSTATS and NSTATS lines
XSTATS=`grep 'named.*XSTATS' "$SYSLOGFILE" | tail -1`
# NSTATS=`grep 'named.*NSTATS' "$SYSLOGFILE" | tail -1`
# We concentrate on what clients communicate with us about
# and counters that we suspect can indicate abuse or error conditions
# Received Queries: Total volume of queries received.
# This should be nice and smooth.
echo "queries.value `pick_stat RQ "$XSTATS"`"
# Sent Answers: This should be the same as RQ except when there are
# errors. May not be very interesting.
echo "answers.value `pick_stat SAns "$XSTATS"`"
# Sent and Forwarded queries, in a proxy setting this should be
# the same as Received Queries (?)
echo "forwarded.value `pick_stat SFwdQ "$XSTATS"`"
# Received Zone Transfer queries - should be low. High value could
# indicate some odd error or some kind of abuse
echo "axfr.value `pick_stat RAXFR "$XSTATS"`" # Received AXFR Qs
# Received TCP connections: These are used for zone transfers or
# oversized (>512 byte) answers. A high value here could indicate
# that you need to trim down the size of your answers somehow (Do you
# have a ton of MXes or NSes that gets reported back?), or this could
# be due to an error. Or it could be due to abuse.
echo "tcp.value `pick_stat RTCP "$XSTATS"`"
# Get a total of errors
errexpr="
`pick_stat RNXD "$XSTATS"` +
`pick_stat RFail "$XSTATS"` +
`pick_stat RErr "$XSTATS"` +
`pick_stat SErr "$XSTATS"` +
`pick_stat RIQ "$XSTATS"` +
`pick_stat RFErr "$XSTATS"` ";
echo "errors.value `expr $errexpr`"
}
case $1 in
config)
cat <<'EOF'
graph_title BIND DNS Query statistics
graph_vlabel Queries / ${graph_period}
graph_scale no
queries.label Queries
queries.type DERIVE
queries.min 0
answers.label Answers
answers.type DERIVE
answers.min 0
forwarded.label Forwarded
forwarded.type DERIVE
forwarded.min 0
axfr.label AXFRs
axfr.type DERIVE
axfr.min 0
tcp.label Qs by TCP
tcp.type DERIVE
tcp.min 0
errors.label Errors
errors.type DERIVE
errors.min 0
EOF
exit 0
;;
esac
do_stats
|