perl 监控磁盘空间并自动报警实例

功能：当Linux磁盘分区达到70%时，自动发送邮件报警，使用前提：在被监控服务器上开启sendmail即可。

#!/usr/bin/perl
$ip_addr=`/sbin/ifconfig eth0 | perl -lne 'print $1 if/inet addr:(.*)Bcast/'`;
$ip_addr=~ s/^s+|s+$//g;
$admin_addr = 'youshengtao@youxigu.com';
&check_dfusage;
exit();
sub check_dfusage {
????????? @diskinfo=`df`;

????????? $message_text = ' ';
??? foreach (@diskinfo) {
??????????? ($dirname,$arg1,$arg2,$arg3,$arg4,$arg5,$arg6) =? split (' ',$_,7);
????????????????
??????????? ($arg4num,$therest) = split ('%',2);
??????????? if ($arg4num > "70") {
??????????????? $message_text ="$ip_addr $arg5 Disk partition space usage over? $arg4num%","n";
???????????????????????????????? }
??????????????????????? }
??????????????????????? if ($message_text ne ' ') {
?????????????????????????????? &sendmessage;
??????????????????????? }
????????????????? }

sub sendmessage { ?????? open(SF,"|mail -v -s '$ip_addr? Disk Partition Warning' $admin_addr"); ?????? print SF "$message_text"; ?????? close(SF); } ?