checkmk_check_borg_local.sh

#!/usr/bin/env bash
#
# Written by: Robin Gierse - info@thorian93.de - on 20200911
#
# Purpose:
# This is a check script for borg backups as seen from the backup client.
#
# Version: 0.1 on 20200911
# Version: 0.2 on 20200913
#
# Usage:
# ./checkmk_check_borg_local.sh

borg_repository='$BORG_REPOSITORY'

_initialize() {
    today="$(date +%Y-%m-%d)"
    yesterday="$(date +%Y-%m-%d --date=yesterday)"
    borg_backups="$(borg list $borg_repository | cut -d ' ' -f 1)"
    borg_repo_usage="$(borg info $borg_repository | grep 'All archives:' | tr -s '[:space:]')"
}

_check_state() {
    for backup in $borg_backups
    do
        day="$(echo $backup | cut -d '-' -f 5,6,7 | cut -d 'T' -f 1)"
        retention="$(echo $backup | cut -d '-' -f 4)"
        finished="$(echo $backup | cut -d 'T' -f 2)"
        server="$(echo $backup | cut -d '-' -f 1,2,3)"
        if [ "$day" == "$today" ]
        then
            check_rc='0'
            check_state='OK'
            check_output="Last Backup was today on $day"
        elif [ "$day" == "$yesterday" ]
        then
            check_rc='1'
            check_state='WARN'
            check_output="Last Backup was yesterday on $day"
        elif [ "$day" > "$yesterday" ]
        then
            check_rc='2'
            check_state='CRIT'
            check_output="Last Backup was on $day!"
        else
            check_rc='3'
            check_state='UNKN'
        fi
    done
}

_check_perfdata() {
    orig_size="$(echo $borg_repo_usage | cut -d ' ' -f 3)"
    orig_unit="$(echo $borg_repo_usage | cut -d ' ' -f 4)"
    comp_size="$(echo $borg_repo_usage | cut -d ' ' -f 5)"
    comp_unit="$(echo $borg_repo_usage | cut -d ' ' -f 6)"
    dedup_size="$(echo $borg_repo_usage | cut -d ' ' -f 7)"
    dedup_unit="$(echo $borg_repo_usage | cut -d ' ' -f 8)"
    original_size="'original_size'=$orig_size[$orig_unit]"
    compressed_size="'compressed_size'=$comp_size[$comp_unit]"
    deduplicated_size="'deduplicated_size'=$dedup_size[$dedup_unit]"
}

_print_state() {
    echo -e "$check_state: $check_output - Usage: $dedup_size$dedup_unit | $original_size $compressed_size $deduplicated_size\nOriginal Size: $orig_size$orig_unit Compressed Size: $comp_size$comp_unit Deduplicated Size: $dedup_size$dedup_unit"
    exit "$check_rc"
}

_initialize
_check_state
_check_perfdata
_print_state