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- 2015-12-06
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if_err_
Name
if_err_ - Wildcard plugin to monitor errors, packet drops, and collisions of network interfaces
Configuration
This is a wildcard plugin. To monitor an interface, link if_err_<interface> to this file. E.g.
ln -s /usr/share/munin/plugins/if_err_ \
/etc/munin/plugins/if_err_eth0
…will monitor eth0.
This plugin does not use environment variables.
Usage
Any device found in /proc/net/dev can be monitored. Examples include ipsec*, eth*, irda* and lo.
Please note that aliases cannot be monitored with this plugin.
Author
Unknown author
License
GPLv2
Magic Markers
#%# family=auto
#%# capabilities=autoconf suggest
#!/bin/sh
set -e
: << =cut
=head1 NAME
if_err_ - Wildcard plugin to monitor errors, packet drops, and
collisions of network interfaces
=head1 CONFIGURATION
This is a wildcard plugin. To monitor an interface, link
if_err_<interface> to this file. E.g.
ln -s /usr/share/munin/plugins/if_err_ \
/etc/munin/plugins/if_err_eth0
...will monitor eth0.
This plugin does not use environment variables.
=head1 USAGE
Any device found in /proc/net/dev can be monitored. Examples include
ipsec*, eth*, irda* and lo.
Please note that aliases cannot be monitored with this plugin.
=head1 AUTHOR
Unknown author
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf suggest
=cut
. "$MUNIN_LIBDIR/plugins/plugin.sh"
INTERFACE=${0##*/if_err_}
if [ "$1" = "autoconf" ]; then
if [ -r /proc/net/dev ]; then
echo yes
exit 0
else
echo "no (/proc/net/dev not found)"
exit 0
fi
fi
if [ "$1" = "suggest" ]; then
if [ -r /proc/net/dev ]; then
sed -rne '/^[[:space:]]*(lo|gre[[:digit:]]|sit[[:digit:]]+|[a-z0-9]+\.[0-9]+):/d;s,^[[:space:]]*([^:]+):.*,\1,p' /proc/net/dev
fi
exit 0
fi
if [ "$1" = "config" ]; then
echo "graph_order rcvd trans"
echo "graph_title $INTERFACE errors"
echo 'graph_args --base 1000'
# shellcheck disable=SC2016
echo 'graph_vlabel packets in (-) / out (+) per ${graph_period}'
echo 'graph_category network'
echo "graph_info This graph shows the amount of errors, packet drops, and collisions on the $INTERFACE network interface."
echo 'rcvd.label errors'
echo 'rcvd.type COUNTER'
echo 'rcvd.graph no'
echo 'rcvd.warning 1'
echo 'trans.label errors'
echo 'trans.type COUNTER'
echo 'trans.negative rcvd'
echo 'trans.warning 1'
echo 'rxdrop.label drops'
echo 'rxdrop.type COUNTER'
echo 'rxdrop.graph no'
echo 'txdrop.label drops'
echo 'txdrop.type COUNTER'
echo 'txdrop.negative rxdrop'
echo 'collisions.label collisions'
echo 'collisions.type COUNTER'
print_warning rcvd
print_critical rcvd
print_warning trans
print_critical trans
exit 0
fi
# Escape dots in the interface name (eg. vlans) before using it as a regex
if [ -r "/sys/class/net/$INTERFACE/statistics/rx_bytes" ]; then
echo "rcvd.value $(cat "/sys/class/net/$INTERFACE/statistics/rx_errors")"
echo "trans.value $(cat "/sys/class/net/$INTERFACE/statistics/tx_errors")"
echo "rxdrop.value $(cat "/sys/class/net/$INTERFACE/statistics/rx_dropped")"
echo "txdrop.value $(cat "/sys/class/net/$INTERFACE/statistics/tx_dropped")"
echo "collisions.value $(cat "/sys/class/net/$INTERFACE/statistics/collisions")"
else
awk -v interface="$INTERFACE" \
'BEGIN { gsub(/\./, "\\.", interface) }
$1 ~ "^" interface ":" {
split($0, a, /: */); $0 = a[2];
print "rcvd.value " $3 "\ntrans.value " $11;
print "rxdrop.value " $4 "\ntxdrop.value " $12;
print "collisions.value " $14;
}' \
/proc/net/dev
fi