/
check_docker_version.py
executable file
·100 lines (82 loc) · 2.95 KB
/
check_docker_version.py
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
#!/usr/bin/env python3
# coding=utf-8
# vim:ts=4:sts=4:sw=4:et
#
# Author: Hari Sekhon
# Date: 2018-03-05 19:10:02 +0000 (Mon, 05 Mar 2018)
#
# https://github.com/HariSekhon/Nagios-Plugins
#
# License: see accompanying Hari Sekhon LICENSE file
#
# If you're using my code you're welcome to connect with me on LinkedIn
# and optionally send me feedback to help steer this or other code I publish
#
# https://www.linkedin.com/in/HariSekhon
#
"""
Nagios Plugin to check Docker version via the Docker API
Can optionally test the version matches a regex
Also outputs the Docker API version
Supports TLS with similar options to official 'docker' command
Tested on Docker 18.02
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import logging
import os
import re
import sys
#import time
import traceback
srcdir = os.path.abspath(os.path.dirname(__file__))
libdir = os.path.join(srcdir, 'pylib')
sys.path.append(libdir)
try:
# pylint: disable=wrong-import-position
from harisekhon.utils import log, UnknownError, validate_regex, isVersionLax, support_msg_api, jsonpp
from harisekhon import DockerNagiosPlugin
except ImportError:
print(traceback.format_exc(), end='')
sys.exit(4)
__author__ = 'Hari Sekhon'
__version__ = '0.4'
class CheckDockerVersion(DockerNagiosPlugin):
def __init__(self):
# Python 2.x
super(CheckDockerVersion, self).__init__()
# Python 3.x
# super().__init__()
self.expected = None
self.msg = 'Docker msg not defined yet'
def add_options(self):
self.add_opt('-e', '--expected', help='Expected version regex (optional)')
self.add_docker_options()
def process_options(self):
self.expected = self.get_opt('expected')
if self.expected is not None:
validate_regex(self.expected)
log.info('expected version regex: %s', self.expected)
def check(self, client):
log.info('getting Docker version')
_ = client.version()
if log.isEnabledFor(logging.DEBUG):
log.debug((jsonpp(_)))
version = _['Version']
if not isVersionLax(version):
raise UnknownError('Docker version unrecognized \'{}\'. {}'\
.format(version, support_msg_api()))
self.msg = 'Docker version = {}'.format(version)
if self.expected is not None:
log.info("verifying version against expected regex '%s'", self.expected)
if re.match(self.expected, str(version)):
log.info('version regex matches retrieved version')
else:
log.info('version regex does not match retrieved version')
self.msg += " (expected '{}')".format(self.expected)
self.critical()
self.msg += ', API version = {}'.format(_['ApiVersion'])
if __name__ == '__main__':
CheckDockerVersion().main()