perl 监控主机报警

#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=1.6;
my $disk_trigger=90;
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 $normal="\e[0m";
sub send_mail{
if (@_ != 2){print "请输入2个参数\n";exit 1};
    ($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   = '[email protected]';
    my $mail_pwd    = 'xx';
    my $mail_server = 'smtp.163.com';

    my $from    = "From: $mail_user\n";
    my $subject = "Subject: zjcap info\n";
    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("\n\n");
    $smtp->datasend("$message\n"); # set content
    $smtp->dataend();
    $smtp->quit();
};



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


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\n";
    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('[email protected]',"cpu_15m\n警告$cpu_15m")
    }

    if ($cpu_5m > $cpu_number*$cpu_trigger) {
        $uptime[-2]="$red$cpu_5m$normal,";
        send_mail('[email protected]',"cpu_5m\n警告$cpu_5m")
    }

    if ($cpu_1m > $cpu_number*$cpu_trigger) {
        $uptime[-3]="$red$cpu_1m$normal,";
        send_mail('[email protected]',"cpu_1m\n警告$cpu_1m")
    }

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

##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${normal}%s\n", "$fs",$type,$size,$used,$avail,"$usage%",$mounted);
            send_mail('[email protected]',"@ip--disk_usage\nfs type size used avail usage mounted\n$i");
        } else { 
            printf("%-36s%-6s%-6s%-6s%-6s%-6s%s\n", $fs,$type,$size,$used,$avail,"$usage%",$mounted);
        }
    }
    print "-" x 80 ."\n";
}



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

###监控CPU idle 和交换分区
sub vmstat() {
    §ion("VMSTAT");
    open (FH,"vmstat -w 2 5|");
    while(<FH>) {
        chomp;
        next if /Linux/;
        my @array=split /\s+/,$_;
    ##匹配开头和结尾
        if (($array[-3] =~ /\A\d+\z/ and $array[-3] < 21) or ($array[7] > 1000)  or ($array[8] > 1000 )) {
            print "$red$_$normal\n";
  send_mail('[email protected]',"请检查CPU和交换分区\nprocs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----\n r  b       swpd       free       buff      cache   si   so    bi    bo   in   cs  us sy  id wa st\n$_");
 
        }else {
print "$_\n"}; 
}
    }
    print "-" x 80 ."\n";



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



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