-
Notifications
You must be signed in to change notification settings - Fork 47
/
Copy pathcheck_nfs_stats_by_ssh.py
executable file
·247 lines (199 loc) · 8.52 KB
/
check_nfs_stats_by_ssh.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
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
#!/usr/bin/env python2
# Copyright (C) 2013:
# Gabes Jean, [email protected]
# Pasche Sebastien, [email protected]
#
# 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.
#
'''
This script is a check for lookup at memory consumption over ssh without
having an agent on the other side
'''
import os
import sys
import optparse
import base64
import subprocess
# Ok try to load our directory to load the plugin utils.
my_dir = os.path.dirname(__file__)
sys.path.insert(0, my_dir)
try:
import schecks
except ImportError:
print "ERROR : this plugin needs the local schecks.py lib. Please install it"
sys.exit(2)
VERSION = "0.1"
DEFAULT_WARNING = '75%'
DEFAULT_CRITICAL = '90%'
DEFAULT_TEMP_FILE = '/tmp/__check_nfs_stats_by_ssh.tmp'
def get_nfs_stats(client):
# We are looking for such lines for the first run:
#1366283417 <----- current unixtime on distant server
#ls: cannot access /tmp/__disks_stats6: No such file or directory <----- there was not previous check
#cat: /tmp/__disks_stats6: No such file or directory <----- same here
#rc 90566 549905930 2132450813
#fh 405 0 0 0 0
#io 1908342383 2129640714
#th 8 29934764 567650.738 252479.505 49455.931 0.000 22572.536 7989.642 5263.229 4076.437 0.000 11600.839
#ra 32 43631901 0 0 0 0 0 0 0 0 0 12919491
#net 2682967197 2490831124 192175293 21225
#rpc 2682395815 16 16 0 0
#proc2 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#proc3 22 39 992875652 140854720 536774218 278787144 58 56444593 276675820 66624606 47098 27 0 65531032 81943 54147 515 26810978 9489846 213523510 34 0 1173216
#proc4 2 0 0
#proc4ops 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
# After the first one we will have
#1366283725 <----- current unixtime on distant server
#1366283423 <----- the modification time of the CHK_FILE, so we know how much time we got between the two checks
# BIG PART *2
#Interesting parts :
#io 3197575487 677537481
#io (input/output): <bytes-read> <bytes-written>
#- bytes-read: bytes read directly from disk
#- bytes-written: bytes written to disk
#
#proc3 22 1 219996357 556065 24059461 43520164 606473 150260668 28056897 545340 198181 3708 0 412742 104649 177365 10 4940 255357 152 3
# READ WRTIE
# Beware of the export!
raw = 'CHK_FILE=%s;' % DEFAULT_TEMP_FILE
raw += r"""date +%s;ls -l --time-style=+%s $CHK_FILE | awk '{print $6}';cat $CHK_FILE; cat /proc/net/rpc/nfsd | tee $CHK_FILE"""
stdin, stdout, stderr = client.exec_command('export LC_LANG=C && unset LANG && %s' % raw)
errors = [l for l in stderr]
for line in errors:
if line.startswith('ls:') and line.endswith('No such file or directory'):
print "OK: the check is initializing"
sys.exit(3)
stats = {'io': {'r':[], 'w':[]}, 'proc3': {'r':[], 'w':[]}}
lines = [line for line in stdout]
if len(lines) < 2:
print "Error: something goes wrong during the command launch sorry"
sys.exit(2)
# Remember to close the client when finish
client.close()
# We try to get the diff betweenthe file date and now
now = lines.pop(0)
before = lines.pop(0)
try:
diff = int(now) - int(before)
except ValueError:
print "OK: the check is initializing"
sys.exit(3)
# Ok such things should not be true on day, but we don't really now
if diff <= 0:
print "OK: the check is initializing"
diff = 300
# Let's parse al of this
for line in lines:
line = line.strip()
#print line
if not line:
continue
tmp = line.split(' ', 1)
if tmp[0] == 'io':
r,w = tuple([int(v) for v in tmp[1].split(' ')])
stats['io']['r'].append(r)
stats['io']['w'].append(w)
if tmp[0] == 'proc3':
_t = tmp[1].split(' ')
r = int(_t[7])
w = int(_t[8])
stats['proc3']['r'].append(r)
stats['proc3']['w'].append(w)
return diff, stats
parser = optparse.OptionParser(
"%prog [options]", version="%prog " + VERSION)
parser.add_option('-H', '--hostname',
dest="hostname", help='Hostname to connect to')
parser.add_option('-p', '--port',
dest="port", type="int", default=22,
help='SSH port to connect to. Default : 22')
parser.add_option('-i', '--ssh-key',
dest="ssh_key_file",
help='SSH key file to use. By default will take ~/.ssh/id_rsa.')
parser.add_option('-u', '--user',
dest="user", help='remote use to use. By default shinken.')
parser.add_option('-P', '--passphrase',
dest="passphrase", help='SSH key passphrase. By default will use void')
parser.add_option('-w', '--warning',
dest="warning",
help='Warning value for physical used memory. In percent. Default : 75%')
parser.add_option('-c', '--critical',
dest="critical",
help='Critical value for physical used memory. In percent. Must be '
'superior to warning value. Default : 90%')
if __name__ == '__main__':
# Ok first job : parse args
opts, args = parser.parse_args()
if args:
parser.error("Does not accept any argument.")
port = opts.port
hostname = opts.hostname or ''
ssh_key_file = opts.ssh_key_file or os.path.expanduser('~/.ssh/id_rsa')
user = opts.user or 'shinken'
passphrase = opts.passphrase or ''
# Try to get numeic warning/critical values
s_warning = opts.warning or DEFAULT_WARNING
s_critical = opts.critical or DEFAULT_CRITICAL
warning, critical = schecks.get_warn_crit(s_warning, s_critical)
# Ok now connect, and try to get values for memory
client = schecks.connect(hostname, port, ssh_key_file, passphrase, user)
diff, stats = get_nfs_stats(client)
# Maybe we failed at getting data
if not stats:
print "Error : cannot fetch cpu stats values from host"
sys.exit(2)
#print stats
# We are putting diff into float so we are sure we will have float everywhere
diff = float(diff)
perfdata = []
# First the B/s
v = stats['io']
rs = v['r']
ws = v['w']
# Ok only if we got the good len of data
if len(rs) == len(ws) == 2:
p_r = rs.pop(0)
n_r = rs.pop(0)
p_w = ws.pop(0)
n_w = ws.pop(0)
# We want only positive values, if not, means that ther ewas a problem
# like a reboot for example, so counters are back to 0
d_r = max(0, n_w - p_w) / diff
d_w = max(0, n_w - p_w) / diff
# Ok Now it's what we did all of this : dump the io stats!
perfdata.append('RB_by_s=%dB/s' % d_r)
perfdata.append('WB_by_s=%dB/s' % d_w)
v = stats['proc3']
rs = v['r']
ws = v['w']
# Ok only if we got the good len of data
if len(rs) == len(ws) == 2:
p_r = rs.pop(0)
n_r = rs.pop(0)
p_w = ws.pop(0)
n_w = ws.pop(0)
# We want only positive values, if not, means that ther ewas a problem
# like a reboot for example, so counters are back to 0
d_r = max(0, n_w - p_w) / diff
d_w = max(0, n_w - p_w) / diff
# Ok Now it's what we did all of this : dump the io stats!
perfdata.append('R_by_s=%dR/s' % d_r)
perfdata.append('W_by_s=%dW/s' % d_w)
print "OK | %s" % (' '.join(perfdata))
sys.exit(0)