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
|
#!/usr/bin/perl -w
# This script is designed to check a backup directory populated with
# subdirectories named after hosts, within which there are backups of various
# types.
#
# Example:
# /home/backup:
# foo.example.com
#
# foo.example.com:
# rdiff-backup .ssh
#
# rdiff-backup:
# root home rdiff-backup-data usr var
#
# There are heuristics to determine the backup type. Currently, the following
# types are supported:
#
# rdiff-backup: assumes there is a rdiff-backup/rdiff-backup-data/backup.log file
# duplicity: assumes there is a dup subdirectory, checks the latest file
# dump files: assumes there is a dump subdirectory, checks the latest file
#
# This script returns output suitable for send_nsca to send the results to
# nagios and should therefore be used like this:
#
# checkbackups.sh | send_nsca -H nagios.example.com
use Getopt::Std;
# XXX: taken from utils.sh from nagios-plugins-basic
my $STATE_OK=0;
my $STATE_WARNING=1;
my $STATE_CRITICAL=2;
my $STATE_UNKNOWN=3;
my $STATE_DEPENDENT=4;
# gross hack: we look into subdirs to find vservers
my @vserver_dirs = qw{/var/lib/vservers /vservers};
our $opt_d = "/backup";
our $opt_c = 48 * 60 * 60;
our $opt_w = 24 * 60 * 60;
our $opt_v = 0;
our $opt_o;
if (!getopts('d:c:w:vo')) {
print <<EOF
Usage: $0 [ -d <backupdir> ] [ -c <threshold> ] [ -w <threshold> ] [ -o ] [ -v ]
EOF
;
exit();
}
my $backupdir= $opt_d;
my $crit = $opt_c;
my $warn = $opt_w;
my @hosts;
if (defined($opt_o)) {
@hosts=qx{hostname -f};
} else {
# XXX: this should be a complete backup registry instead
@hosts=qx{ls $backupdir};
}
chdir($backupdir);
my ($state, $message, @vservers, $host);
foreach $host (@hosts) {
chomp($host);
if ($opt_o) {
$dir = $backupdir;
} else {
$dir = $host;
}
my $flag="";
my $type="unknown";
my $extra_msg="";
@vservers = ();
$state = $STATE_UNKNOWN;
$message = "???";
if (-d $dir) {
# guess the backup type and find a proper stamp file to compare
# XXX: the backup type should be part of the machine registry
my $last_bak;
if (-d "$dir/rdiff-backup") {
$flag="$dir/rdiff-backup/rdiff-backup-data/backup.log";
$type="rdiff";
if (open(FLAG, $flag)) {
while (<FLAG>) {
if (/StartTime ([0-9]*).[0-9]* \((.*)\)/) {
$last_bak = $1;
$extra_msg = ' [backup.log]';
$opt_v && print STDERR "found timestamp $1 ($2) in backup.log\n";
}
}
if (!$last_bak) {
$message = "cannot parse backup.log for a valid timestamp";
next;
}
} else {
$opt_v && print STDERR "cannot open backup.log\n";
}
close(FLAG);
foreach my $vserver_dir (@vserver_dirs) {
$vsdir = "$dir/rdiff-backup$vserver_dir";
if (opendir(DIR, $vsdir)) {
@vservers = grep { /^[^\.]/ && -d "$vsdir/$_" } readdir(DIR);
$opt_v && print STDERR "found vservers $vsdir: @vservers\n";
closedir DIR;
} else {
$opt_v && print STDERR "no vserver in $vsdir\n";
}
}
} elsif (-d "$dir/dump") {
# XXX: this doesn't check backup consistency
$flag="$dir/dump/" . `ls -tr $dir/dump | tail -1`;
chomp($flag);
$type="dump";
} elsif (-d "$dir/dup") {
# XXX: this doesn't check backup consistency
$flag="$dir/dup/" . `ls -tr $dir/dup | tail -1`;
chomp($flag);
$type="dup";
} elsif (-r "$dir/rsync.log") {
# XXX: this doesn't check backup consistency
$flag="$dir/rsync.log";
$type="rsync";
} else {
$message = "unknown system";
next;
}
if (!defined($last_bak)) {
my @stats = stat($flag);
if (not @stats) {
$message = "cannot stat flag $flag";
next;
}
$last_bak = $stats[9];
}
my $t = time();
my $delta = $t - $last_bak;
if ($delta > $crit) {
$state = $STATE_CRITICAL;
} elsif ($delta > $warn) {
$state = $STATE_WARNING;
} elsif ($delta >= 0) {
$state = $STATE_OK;
}
$message = "$delta seconds old$extra_msg";
} else {
$message = "no directory";
}
} continue {
printf "$host\tbackups\t$state\t$message\n";
my @dom_sufx = split(/\./, $host);
my $dom_sufx = join('.', @dom_sufx[1,-1]);
foreach my $vserver (@vservers) {
printf "$vserver.$dom_sufx\tbackups\t$state\t$message, same as parent: $host\n";
}
}
|
