Munin contributed plugins

#!/bin/bash

#%# family=auto

: << EOF

=head1 NAME

zpool_fragmentation - Outputs the zpool fragmentation per zfs pool.

=head1 AUTHOR

Michael Grote

=head1 LICENSE

GPLv3 or later

SPDX-License-Identifier: GPL-3.0-or-later

=head1 MAGIC MARKERS

 #%# family=auto

=cut

EOF

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

    if ! command -v zpool &> /dev/null; then

        echo "no (zpool could not be found!)"

    else

        echo "yes"

    fi

    exit 0

fi

# lese alle pools, sed löscht die erste zeile

# entferne das %-zeichen

list=$(zpool list | sed 1d | tr -d %)

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

  # https://superuser.com/questions/284187/bash-iterating-over-lines-in-a-variable

  while read -r line; do

    # setze label

    echo "$line" | awk '{print $1".label " $1}'

    # setze warn-limits

    echo "$line" | awk '{print $1".warning " 50}'

    echo "$line" | awk '{print $1".critical " 75}'

  done <<< "$list"

  # setze optionen

  echo 'graph_title ZFS storage pool - fragmentation' # Titelzeile

  echo 'graph_vlabel fragmentation in %' # Text links, hochkant

  echo 'graph_category fs' # Kategorie

  echo 'graph_info This graph shows the ZFS Pool fragmentation.' # Text über Tabelle/Infos

  echo 'graph_args -l 0 --upper-limit 100' # wertebegrenzer 0-100

  exit 0

fi

# lese jede Zeile der Variable $list

# tue für jede Zeile

# "echo" die Zeile, wende awk drauf, Spalte $1/$7

while read -r line; do

  # gebe wert aus

  # <name>.value <wert>

  echo "$line" | awk '{print $1".value " $7}'

done <<< "$list"

exit 0