Perl 监控OS脚本

#l!/usr/bin/perl
##采集系统资源
use Sys::Hostname;
use HTTP::Date qw(time2iso str2time time2iso time2isoz);  
use Net::SMTP;

my $cpu_trigger=3;
my $disk_trigger=70;
my $memory_trigger=40;
my $io_trigger=80;
my $cpu_event;
my $memory_event;
my $red="e[1;31m";
my $green="e[1;32m";
my $yellow="e[1;33m";
my $normal="e[0m";
sub send_mail{
if (@_ != 2){print "请输入2个参数
";exit 1};
    ($m,$n) = @_; #将参数赋值给变量  
    my $to_address  = $m;
my $CurrTime = time2iso(time());
    my $to_address  = $m;
    my $mail_user   = 'zhao.yangjian@163.com';
    my $mail_pwd    = 'xxxxxxx';
    my $mail_server = 'smtp.163.com';

    my $from    = "From: $mail_user
";
    my $subject = "Subject: zjcap info
";
    my $info = "$CurrTime--$n";
     my $message = <<CONTENT; 
     $info
CONTENT
    my $smtp = Net::SMTP->new($mail_server);

    $smtp->auth($mail_user, $mail_pwd) || die "Auth Error! $!";
    $smtp->mail($mail_user);
    $smtp->to($to_address);

    $smtp->data();             # begin the data
    $smtp->datasend($from);    # set user
    $smtp->datasend($subject); # set subject
    $smtp->datasend("

");
    $smtp->datasend("$message
"); # set content
    $smtp->dataend();
    $smtp->quit();
};



sub section() {
    my $section=shift;
    print ">>>>>$green $section $normal  
";
}


sub get_cpu {
    my $cpu_number=0;
    my $cpu_model;

    §ion("CPU");
    open(CPU,"<","/proc/cpuinfo");
    while (<CPU>) {
       chomp;
       if( /^model name.*: (.*$)/) {
          $cpu_number += 1;
		  #正则分组,取第一个位置值
          $cpu_model="$1";
          $cpu_model =~ s/s+/ /g;
       }
    }
    print " CPU: $cpu_number X $cpu_model
";
    close(CPU);
## 取当前5分钟,10分钟,15分钟系统负载,并根据阀值判断
    my $uptime=`uptime`;
    chomp $uptime;
    my @uptime=split / /,$uptime;
    $uptime[-2] =~ s/,//;
    $uptime[-3] =~ s/,//;
    my $cpu_15m=$uptime[-1];
    my $cpu_5m=$uptime[-2];
    my $cpu_1m=$uptime[-3];

    if ($cpu_15m > $cpu_number*$cpu_trigger) {
        $uptime[-1]="$red$cpu_15m$normal,";
        send_mail('zhaoyangjian@zjcap.cn',"@ip-cpu_15m
warning$cpu_15m")
    }

    if ($cpu_5m > $cpu_number*$cpu_trigger) {
        $uptime[-2]="$red$cpu_5m$normal,";
        send_mail('zhaoyangjian@zjcap.cn',"@ip-cpu_5m
warning$cpu_5m")
    }

    if ($cpu_1m > $cpu_number*$cpu_trigger) {
        $uptime[-3]="$red$cpu_1m$normal,";
        send_mail('zhaoyangjian@zjcap.cn',"@ip-cpu_1m
warning$cpu_1m")
    }

    print "@uptime
";
    print "-" x 80 ."
";
}

##监控磁盘使用率
sub disk_space() {
    §ion("DISK SPACE");
    my $line;
    my @array=`df -PTh`;
    foreach my $i (@array) {
    my ($fs,$type,$size,$used,$avail,$usage,$mounted);
        chomp $i;
        $i =~ s/(^s+|s+$)//g;
        $i =~ s/s+/ /g;
        ($fs,$type,$size,$used,$avail,$usage,$mounted)=split /s+/,$i;
        substr($usage, -1, 1)="";
        if ($usage > $disk_trigger ) {
            printf("%-36s%-6s%-6s%-6s%-6s${red}%-6s${normal}%s
", "$fs",$type,$size,$used,$avail,"$usage%",$mounted);
            send_mail('zhaoyangjian@zjcap.cn',"@ip--disk_usage
fs type size used avail usage mounted
$i");
        } else { 
            printf("%-36s%-6s%-6s%-6s%-6s%-6s%s
", $fs,$type,$size,$used,$avail,"$usage%",$mounted);
        }
    }
    print "-" x 80 ."
";
}



##监控磁盘util 
sub iostat() {
    §ion("IOSTAT");
    open (FH,"iostat -dNkx 2 4|");
    while(<FH>) {
        next if /Linux/;
        my @array=split /s+/,$_;
        my $format="%-25s"."%-9s" x 11 ."
";
    
        if ($array[-1] > $io_trigger) {
            printf("$red$format$normal",$array[0],@array[1..11]);
            send_mail('zhaoyangjian@zjcap.cn',"@ip-iostat
DEV       tps  rd_sec/s  wr_sec/s  avgrq-sz  avgqu-sz     await     svctm     %util
$_");
        } else {
            printf("$format",$array[0],@array[1..11]);
        }
    }
    print "-" x 80 ."
";
}

###监控CPU idle 和交换分区
sub vmstat() {
    §ion("VMSTAT");
    open (FH,"vmstat  2 5|");
    while(<FH>) {
        chomp;
        next if /Linux/;
        my @array=split /s+/,$_;
    ##匹配开头和结尾
           print "$array[-3] is $array[-3]
";
           print "$array[7] is $array[7]
";
           print "$array[8] is $array[8]
";
        if (($array[-3] =~ /Ad+z/ and $array[-3] < 50) or ($array[7] =~ /Ad+z/ and $array[7] > 100)  or ($array[8] =~ /Ad+z/ and $array[8] > 100 )) {
            print "$red$_$normal
";
  send_mail('zhaoyangjian@zjcap.cn',"@ip-
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
 r  b       swpd       free       buff      cache   si   so    bi    bo   in   cs  us sy  id wa st
$_");
 
        }else {
print "$_
"}; 
}
    }
    print "-" x 80 ."
";



sub basic() {
     $host = hostname;
     @lines=qx|/sbin/ifconfig|;
     @ip;
    print "-" x 80 ."
";
    foreach(@lines){
        if(/inet addr:([d.]+)/){
            push @ip,$1 unless $1 =~ /A127.0.0.1z/;
        }
    }
    print "${yellow}HOST: $host => IP: @ip$normal
";
    print "-" x 80 ."
";
}



system("clear");
&basic();
&get_cpu();
#&memory();
&disk_space();
&iostat();
&vmstat();