perl学习之nagios脚本

#!/usr/bin/perl
use strict;
use Getopt::Long;
use LWP::Simple;
use lib "/usr/lib64/nagios/plugins";
use utils qw ($TIMEOUT %ERRORS &print_revision &support);
my $HOSTADDRESS;
Getopt::Long::GetOptions(
        'h=s' => \$HOSTADDRESS
);
if (defined ($HOSTADDRESS)){
        my $content = get("http://$HOSTADDRESS:8080/health.html");
                if ( $content ne '' ){
        print "sling is running now!\n";
        exit $ERRORS{'OK'};
}else{
        print "sling is not running,health page not found!!\n";
        exit $ERRORS{'UNKNOWN'};
}
}

根据查看的nagios官网，如果用perl写监控脚本，必须使用strict模块，定义的所有变量都必须使用my声明，Getopt::Long模块可以为perl脚本传参，lib是指定nagios里utils.pm的位置，引用utils模块，nagios自带的%ERRORS可以为我们返回状态code。