Perl如何自定义开发Nagios检测磁盘使用率插件
来自:网络功能说明:
脚本已经用在实践环境中,放到nrpe远程被监控端,用来实时监控远程主机所有分区,动态增加的分区也会自动加到监控范围。
当多个分区同时出现Critical和Warning状态时,将在Nagios中优先显示Critical状态,同时输出所有分区使用情况报告。 nagios培训 uploads/space/2014/0114/104052_VLkY_86462.png
监控内容包括: nagios实施 分区总size;
可用分区size;
已经使用的使用率%;
开发语言:perl
使用说明:
在nrpe.cfg文件中添加下面一行
command=/opt/nrpe/libexec/lionel_disk.pl -w 90 -c 95 保存,重启nrpe使服务生效。 监控软件
-w参数表示warning的阀值,90表示分区使用率达到90%时警告;-c参数表示critical的阀值,95表示使用率达到95%时报警。举例如下:
# ./lionel_disk.pl -w 90 -c 95
/dev/sda2 WARNING: Total is 9.7G MB, FreeDisk is 5.5G, UseDisk% is 42%
/dev/sda5 WARNING: Total is 8.7G MB, FreeDisk is 8.1G, UseDisk% is 2%
/dev/sda1 WARNING: Total is 99M MB, FreeDisk is 82M, UseDisk% is 13%
/dev/sdb1 CRITICAL: Total is 89G MB, FreeDisk is 33G, UseDisk% is 62%
其他细节:本脚本提供检测参数的功能,参数给出错误会提示Usage,warning的参数值一定要比 critical的值小,因为已用的使用率越多报警级别越高。
脚本内容如下,供大家参考:
脚本名称是【lionel_disk.pl 】
#!/usr/bin/perl
# author:shenxiaoran
# date:2014-1-14
use strict;
use lib "/opt/nrpe/libexec";
use utils qw(%ERRORS &print_revision &support &usage); nagios配置
my ($opt_w,$opt_c) = ($ARGV,$ARGV);
my $name_partation;
my $total_disk;
my $use_disk;
my $free_disk;
my $rate_use_disk;
my $status = 'OK';
my $flag = 0;
if ( !defined $ARGV or !defined $ARGV ) {
print "Usage: $0 -w num -c num \n";
print "Example: lionel_disk.pl -w 90 -c 95 \n";
}
else {
check_disk();
}
sub check_disk() {
if ( $opt_w > $opt_c ) {
print "Error: -w num > -c num \n";
print "-w: means already use 90% \n";
print "-c: means already use 95% \n";
print "Usage: $0 -w num -c num \n";
print "Example: lionel_disk.pl -w 90 -c 95 \n";
exit;
}
else {
my @data ;
system "df -h > /tmp/df.tmp";
open (FILE,"</tmp/df.tmp") || die ("Can't open /tmp/df.tmp $!"); 开源监控软件 my $i = 0;
while (<FILE>) {
if (/^\/dev\/*./) {
$data[$i] = $_;
$i++;
}
}
close FILE;
foreach (@data) {
my @partation = split(/\s+/,$_);
$name_partation = $partation;
$total_disk = $partation;
$use_disk = $partation;
$free_disk = $partation;
$rate_use_disk = abs($partation);
if ( $rate_use_disk >= $opt_c ) {
$status = 'CRITICAL';
}
elsif (( $opt_w <= $rate_use_disk ) and ( $rate_use_disk < $opt_c )) {
$status = 'WARNING';
}
print "$name_partation $status: Total is $total_disk MB, FreeDisk is $free_disk, UseDisk% is $rate_use_disk%\n";
if ($status =~ 'CRITICAL') {
$flag = 1
}
}
if ( $flag == 1 ) {
exit "$ERRORS{CRITICAL}" nagios安装
}
else {
exit "$ERRORS{$status}";
}
}
}
脚本结束
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