summaryrefslogtreecommitdiff
path: root/nagios-checks/nagios-check-rdiff-backup
blob: 1f8b30b797d3df62f130a263007293cd3443244d (plain)
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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#!/usr/bin/python

# Copyright 2010, 2011 Peter Palfrader
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

import datetime
import dateutil.parser
import optparse
import os
import re
import sys
import glob


parser = optparse.OptionParser()
parser.set_usage("%prog [options] <backuprepository>")
parser.add_option("-q", "--quiet", dest="quiet", default=False, action="store_true",
  help="Silent mode (exit code only)")
parser.add_option("-w", "--warn", metavar="AGE", dest="warn",
  help="Warn if backup older than (default: 28h)")
parser.add_option("-c", "--critical", metavar="AGE", dest="critical",
  help="Warn if backup older than (default: 72h)")
(options, args) = parser.parse_args()

if len(args) == 0:
    parser.print_help()
    sys.exit(1)

log = []
exitcode = 0
backup_per_code = {}

def code_to_prefix(code):
	if code == 3: return 'UNKNOWN: '
	elif code == 2: return 'CRITICAL: '
	elif code == 1: return 'WARNING: '
	elif code == 0: return 'OK: '
	else: raise ValueError

def convert_time(s, default_unit='h'):
	m = re.match('([0-9]+)([smhdw])?$', s)
	if m is None: raise ValueError
	ticks = int(m.group(1))
	unit = m.group(2)
	if unit is None: unit = default_unit

	if unit == 's': None
	elif unit == 'm': ticks *= 60
	elif unit == 'h': ticks *= 60*60
	elif unit == 'd': ticks *= 60*60*24
	elif unit == 'w': ticks *= 60*60*24*7
	else: raise ValueError
	return ticks

def record(code, base, msg):
	global exitcode

	if not code in backup_per_code: backup_per_code[code] = []
	backup_per_code[code].append(base)

	prefix = code_to_prefix(code)
	log.append("%s%s: %s"%(prefix, base, msg))

	if code > exitcode: exitcode = code

def get_ts_from_fn(base, fn):
	m = re.match('current_mirror\.(.*)\.data$', fn)
	if m is None:
		record(2, base, "backup wedged - cannot parse current mirrors filename '%s'."%(fn))
		return None
	try:
		ts = dateutil.parser.parse(m.group(1))
	except ValueError:
		record(2, base, "backup wedged - cannot parse datestring '%s' from filename '%s'."%(m.group(1), fn))
		return None
	return ts

if options.warn is None: options.warn = '28'
if options.critical is None: options.critical = '72'
options.warn     = datetime.timedelta(seconds = convert_time(options.warn))
options.critical = datetime.timedelta(seconds = convert_time(options.critical))


for base in args:
	data_dir = os.path.join(base, 'rdiff-backup-data')

	if not os.path.exists(base):
		record(2, base, "not a directory")
		continue
	if not os.path.isdir(data_dir):
		record(2, base, "does not seem to be an rdiff-backup backup directory")
		continue
	os.chdir(data_dir)

	current_mirrors = glob.glob('current_mirror.*.data')
	if len(current_mirrors) == 0:
		record(2, base, "no current backups? (current_mirror.* not found)")
		continue
	elif len(current_mirrors) == 2: # one backup is currently running, presumably
		current_mirrors.sort()
	elif len(current_mirrors) == 1: # only one backup is current, good.
		None
	else:
		record(2, base, "backup wedged - too many current_mirror.* files")
		continue

	ts = get_ts_from_fn(base, current_mirrors[0])
	age = datetime.datetime.now(ts.tzinfo) - ts
	if age > options.critical:
		record(2, base, "backup is old (%s)."%(age))
		continue
	elif age > options.warn:
		record(1, base, "backup is old (%s)."%(age))
		continue
	else:
		record(0, base, "backup is current (age: %s)."%(age))
		continue




def record(code, base, msg):

	if not code in backup_per_code: backup_per_code[code] = []
	backup_per_code[code].append(base)

report = []
keys = backup_per_code.keys()
keys.sort(reverse=True)
for code in keys:
	prefix = code_to_prefix(code)
	report.append( prefix + ', '.join(backup_per_code[code]) )
if not options.quiet:
	print '; '.join(report)
	for l in log: print l
sys.exit(exitcode)