monitoring-checks/check_extxtune at main · flucas1/monitoring-checks · GitHub

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
#!/usr/bin/env python3
#-------------------------------------------------------------------------------

import argparse
import sys
import os
import subprocess
import platform

#-------------------------------------------------------------------------------

_candebug = False
def candebug():
    global _candebug
    return _candebug
def setcandebug(value):
    global _candebug
    _candebug = value

def infomsg(msg):
    if candebug() == True:
        print(msg, flush=True)

def mapstatustoexitcode(status):
    if status=="OK":
        exitcode = 0
    elif status=="WARNING":
        exitcode = 1
    elif status=="CRITICAL":
        exitcode = 2
    elif status=="UNKNOWN":
        exitcode = 3
    else:
        exitcode = 4
    return exitcode

def exitnagios(status,message):
    exitcode = mapstatustoexitcode(status)
    print(status+": "+message, flush=True)
    sys.exit(exitcode)

#-------------------------------------------------------------------------------

def extractlinevalue(line,test):
    result = None
    infomsg(line)
    if line.startswith(test):
        result = line[len(test):].strip()
    infomsg(result)
    return result

def checktune(partition,mountcount,mountperiod):
    cmdline = ["/usr/sbin/dumpe2fs","-h",partition]
    completedproc = subprocess.run(cmdline,capture_output=True)
    output = completedproc.stdout.decode("utf-8").strip()
    errors = completedproc.stderr.decode("utf-8").strip()
    exitcode = completedproc.returncode
    infomsg(output)

    currentcount = None
    currentperiod = None
    for line in output.splitlines():
        testcount = extractlinevalue(line,"Maximum mount count:")
        if testcount!=None:
            currentcount = testcount.split()[0]

        testinterval = extractlinevalue(line,"Check interval:")
        if testinterval!=None:
            currentperiod = testinterval.split()[0]

    infomsg(currentcount)
    infomsg(currentperiod)

    validcount =str(currentcount)==str(mountcount)
    validperiod = str(currentperiod)==str(mountperiod)

    result = validcount and validperiod

    return result

def dopostgresclustercountcall(mountcount,mountperiod):
    cmdline = ["/usr/bin/findmnt","--real","--types=ext2,ext3,ext4","--noheadings","--list","--uniq","--nofsroot","--notruncate","--output=SOURCE"]
    completedproc = subprocess.run(cmdline,capture_output=True)
    output = completedproc.stdout.decode("utf-8").strip()
    errors = completedproc.stderr.decode("utf-8").strip()
    exitcode = completedproc.returncode

    if exitcode == 0:
        lines = output.splitlines()
        filesystems = []
        for line in lines:
            test = line.strip()
            if test not in filesystems:
                filesystems.append(test)
        infomsg(filesystems)

        issues = []
        for partition in filesystems:
            tuned = checktune(partition,mountcount,mountperiod)
            if not tuned:
                issues = issues + [partition]

        if len(issues)>0:
            exitnagios("CRITICAL","the filesystems <"+" ".join(issues)+"> are not properly tuned - "+" ".join(filesystems))
        else:
            exitnagios("OK","all filesystems are properly tuned - "+" ".join(filesystems))
    else:
        exitnagios("CRITICAL","issue retrieving the list of mounted filesystems")

#-------------------------------------------------------------------------------

def parse_args(forcedargs=None):
    parser = argparse.ArgumentParser()
    parser.add_argument("-®", "--debug",             action="store_true",  dest="debug",            default=False,                                help="be more verbose")
    args = parser.parse_args(forcedargs)
    return args

def main(forcedargs=None):
    args = parse_args(forcedargs)
    setcandebug(args.debug)

    mountcount = 1
    mountperiod = 604800
    dopostgresclustercountcall(mountcount,mountperiod)

#-------------------------------------------------------------------------------

if __name__ == "__main__":
    main()

#-------------------------------------------------------------------------------