Newer
Older
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
#!/usr/bin/env bash
#########################################################################
# Script: check_zpools.sh
# Purpose: Nagios plugin to monitor status of zfs pool
# Authors: Aldo Fabi First version (2006-09-01)
# Vitaliy Gladkevitch Forked (2013-02-04)
# Claudio Kuenzler Complete redo, perfdata, etc (2013-2014)
# Doc: http://www.claudiokuenzler.com/nagios-plugins/check_zpools.php
# History:
# 2006-09-01 Original first version
# 2006-10-04 Updated (no change history known)
# 2013-02-04 Forked and released
# 2013-05-08 Make plugin work on different OS, pepp up plugin
# 2013-05-09 Bugfix in exit code handling
# 2013-05-10 Removed old exit vars (not used anymore)
# 2013-05-21 Added performance data (percentage used)
# 2013-07-11 Bugfix in zpool health check
# 2014-02-10 Bugfix in threshold comparison
# 2014-03-11 Allow plugin to run without enforced thresholds
#########################################################################
### Begin vars
STATE_OK=0 # define the exit code if status is OK
STATE_WARNING=1 # define the exit code if status is Warning
STATE_CRITICAL=2 # define the exit code if status is Critical
STATE_UNKNOWN=3 # define the exit code if status is Unknown
# Set path
PATH=$PATH:/usr/sbin:/sbin
export PATH
### End vars
#########################################################################
help="check_zpools.sh (c) 2006-2014 several authors\n
Usage: $0 -p (poolname|ALL) [-w warnpercent] [-c critpercent]\n
Example: $0 -p ALL -w 80 -c 90"
#########################################################################
# Check necessary commands are available
for cmd in zpool awk [
do
if ! `which ${cmd} 1>/dev/null`
then
echo "UNKNOWN: ${cmd} does not exist, please check if command exists and PATH is correct"
exit ${STATE_UNKNOWN}
fi
done
#########################################################################
# Check for people who need help - aren't we all nice ;-)
if [ "${1}" = "--help" -o "${#}" = "0" ];
then
echo -e "${help}";
exit ${STATE_UNKNOWN};
fi
#########################################################################
# Get user-given variables
while getopts "p:w:c:" Input;
do
case ${Input} in
p) pool=${OPTARG};;
w) warn=${OPTARG};;
c) crit=${OPTARG};;
*) echo -e $help
exit $STATE_UNKNOWN
;;
esac
done
#########################################################################
# Did user obey to usage?
if [ -z $pool ]; then echo -e $help; exit ${STATE_UNKNOWN}; fi
#########################################################################
# Verify threshold sense
if [[ -n $warn ]] && [[ -z $crit ]]; then echo "Both warning and critical thresholds must be set"; exit $STATE_UNKNOWN; fi
if [[ -z $warn ]] && [[ -n $crit ]]; then echo "Both warning and critical thresholds must be set"; exit $STATE_UNKNOWN; fi
if [[ $warn -gt $crit ]]; then echo "Warning threshold cannot be greater than critical"; exit $STATE_UNKNOWN; fi
#########################################################################
# What needs to be checked?
## Check all pools
if [ $pool = "ALL" ]
then
POOLS=($(sudo -S zpool list -Ho name))
p=0
for POOL in ${POOLS[*]}
do
CAPACITY=$(sudo -S zpool list -Ho capacity $POOL | awk -F"%" '{print $1}')
HEALTH=$(sudo -S zpool list -Ho health $POOL)
# Check with thresholds
if [[ -n $warn ]] && [[ -n $crit ]]
then
if [[ $CAPACITY -ge $crit ]]
then error[${p}]="POOL $POOL usage is CRITICAL (${CAPACITY}%)"; fcrit=1
elif [[ $CAPACITY -ge $warn && $CAPACITY -lt $crit ]]
then error[$p]="POOL $POOL usage is WARNING (${CAPACITY}%)"
elif [ $HEALTH != "ONLINE" ]
then error[${p}]="$POOL health is $HEALTH"; fcrit=1
fi
# Check without thresholds
else
if [ $HEALTH != "ONLINE" ]
then error[${p}]="$POOL health is $HEALTH"; fcrit=1
fi
fi
perfdata[$p]="$POOL=${CAPACITY}% "
let p++
done
if [[ ${#error[*]} -gt 0 ]]
then
if [[ $fcrit -eq 1 ]]; then exit_code=2; else exit_code=1; fi
echo "ZFS POOL ALARM: ${error[*]}|${perfdata[*]}"; exit ${exit_code}
else echo "ALL ZFS POOLS OK (${POOLS[*]})|${perfdata[*]}"; exit 0
fi
## Check single pool
else
CAPACITY=$(sudo -S zpool list -Ho capacity $pool | awk -F"%" '{print $1}')
HEALTH=$(sudo -S zpool list -Ho health $pool)
if [[ -n $warn ]] && [[ -n $crit ]]
then
# Check with thresholds
if [ $HEALTH != "ONLINE" ]; then echo "ZFS POOL $pool health is $HEALTH|$pool=${CAPACITY}%"; exit ${STATE_CRITICAL}
elif [[ $CAPACITY -gt $crit ]]; then echo "ZFS POOL $pool usage is CRITICAL (${CAPACITY}%|$pool=${CAPACITY}%)"; exit ${STATE_CRITICAL}
elif [[ $CAPACITY -gt $warn && $CAPACITY -lt $crit ]]; then echo "ZFS POOL $pool usage is WARNING (${CAPACITY}%)|$pool=${CAPACITY}%"; exit ${STATE_WARNING}
else echo "ALL ZFS POOLS OK ($pool)|$pool=${CAPACITY}%"; exit ${STATE_OK}
fi
else
# Check without thresholds
if [ $HEALTH != "ONLINE" ]
then echo "ZFS POOL $pool health is $HEALTH|$pool=${CAPACITY}%"; exit ${STATE_CRITICAL}
else echo "ALL ZFS POOLS OK ($pool)|$pool=${CAPACITY}%"; exit ${STATE_OK}
fi
fi
fi
echo "UKNOWN - Should never reach this part"
exit ${STATE_UNKNOWN}