Munin contributed plugins

#!/bin/sh

#

# Plugin to monitor SELinux's Access Vector Cache (AVC).

#

#       config   (required)

#       autoconf (optional - used by munin-config)

#

# Lars Strand, 2007

# 

#

# Magic markers (used by munin-config and some installation scripts (i.e.

# optional)):

#%# family=auto

#%# capabilities=autoconf

AVCSTATS="/selinux/avc/cache_stats"

if [ "$1" = "autoconf" ]; then

        if [ -r $AVCSTATS ]; then

                echo yes

                exit 0

        else

                echo no

                exit 1

        fi

fi

if [ "$1" = "config" ]; then

        echo "graph_title SELinux's Access Vector Cache"

        echo 'graph_args -l 0 --base 1000'

        echo 'graph_vlabel AVC operations'

        echo 'graph_category system'

        echo 'lookups.label lookups'

        echo 'lookups.type DERIVE'

        echo 'lookups.min 0'

        echo 'lookups.max 1000000000'

        echo 'lookups.draw AREA'

        echo 'lookups.colour ff0000' # Red

        echo 'lookups.info Number of access vector lookups. This number is a good indicator of the load beeing placed on the AVC.'

        echo 'hits.label hits'

        echo 'hits.type DERIVE'

        echo 'hits.min 0'

        echo 'hits.max 1000000000'

        echo 'hits.draw STACK'

        echo 'hits.colour 0022ff' # Blue

        echo 'hits.info Number of access vector hits.'

        echo 'misses.label misses'

        echo 'misses.type DERIVE'

        echo 'misses.min 0'

        echo 'misses.max 1000000000'

        echo 'misses.draw STACK'

        echo 'misses.colour 990000' # Darker red

        echo 'misses.info Number of cache misses.'

        echo 'allocations.label allocations'

        echo 'allocations.type DERIVE'

        echo 'allocations.min 0'

        echo 'allocations.max 100000000'

        echo 'allocations.draw STACK'

        echo 'allocations.colour ffa500' # Orange

        echo 'allocations.info Number of AVC entries allocated.'

        echo 'reclaims.label reclaims'

        echo 'reclaims.type DERIVE'

        echo 'reclaims.min 0'

        echo 'reclaims.max 1000000000'

        echo 'reclaims.draw STACK'

        echo 'reclaims.colour 00aaaa' # Darker turquoise

        echo 'reclaims.info Number of current total reclaimed AVC entries. If this keeps changing, you may need to increase the cache size (/selinux/avc/cache_threshold).'

        echo 'frees.label frees'

        echo 'frees.type DERIVE'

        echo 'frees.min 0'

        echo 'frees.max 1000000000'

        echo 'frees.draw STACK'

        echo 'frees.colour 00ff7f' # Spring green

        echo 'frees.info Number of free AVC entries.'

        exit 0

fi

if [ -r $AVCSTATS ]; then

    awk ' NR > 1 {

        lookups += $1;

        hits += $2;

        misses += $3;

        allocations += $4;

        reclaims += $5;

        frees += $6;

    } END {

        print "lookups.value " lookups;

        print "hits.value " hits;

        print "misses.value " misses;

        print "allocations.value " allocations;

        print "reclaims.value " reclaims;

        print "frees.value " frees;

    } ' < $AVCSTATS

else

    echo "lookups.value U"

    echo "hits.value U"

    echo "misses.value U"

    echo "allocations.value U"

    echo "reclaims.value U"

    echo "frees.value U"

fi