Question

perl, 'die' with specific status/exit code

Asked by: jedblack

Hi All,

I've got a nagios check that logs into our RPC's and pulls the AMP status, its been working great.  Today my boss asked if I can somehow get this information into mysql as well for him to parse through....

I got everything working fine, except if the database is down...the script throws and error and does not continue.

I've been trying to figure out how to make the script output the following whether the DB is up or down.

print "OK; The Bottom RPC Amp is@botamp\n";
exit 0; (or exit 1,2,3 - depending on the AMP value)

the die statement on line 20 seems to work well, except it throw a status 255 -- i cant figure out how to set the exit code to 0.

any thoughts....

###############################################################
if ($botamp[0] >= 15) {
my $dbh = DBI->connect("DBI:mysql:database=nagios;host=localhost", "root", "1029qpwo", {'RaiseError' => 1});
my $rows = $dbh->do("INSERT INTO rpc (host, ampval, date, time) VALUES ('$host', '@botamp', CURDATE(), NOW())");
$dbh->disconnect();
print "CRITICAL; The Bottom RPC Amp is@botamp\n";
exit 2;
}
################################################################
 
elsif ($botamp[0] >= 14.5) {
my $dbh = DBI->connect("DBI:mysql:database=nagios;host=localhost", "root", "1029qpwo", {'RaiseError' => 1});
my $rows = $dbh->do("INSERT INTO rpc (host, ampval, date, time) VALUES ('$host', '@botamp', CURDATE(), NOW())");
$dbh->disconnect();
print "WARNING; The Bottom RPC Amp is@botamp\n";
exit 1;
}
###############################################################
else {
my $dbh = DBI->connect("DBI:mysql:database=nagios;host=localhost", "root", "1029qpwo", {'PrintError' => 0,'RaiseError' => 1}) or die "OK; The Bottom RPC Amp is@botamp\n";
my $rows = $dbh->do("INSERT INTO rpc (host, ampval, date, time) VALUES ('$host', '@botamp', CURDATE(), NOW())");
$dbh->disconnect();
print "OK; The Bottom RPC Amp is@botamp\n";
exit 0;
}
                                  
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Asked On
2009-08-27 at 21:21:01ID24688812
Topic

Perl Programming Language

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: nemws1Posted on 2009-08-27 at 21:46:50ID: 25205010

Hmmm.. how about a code block?  (Here named "LEAVENOW" - the name doesn't really matter, but it needs to be named in some way.)

There might be a way to use eval with a 'die' and then look at the return code, but I think this is easier (and probably a little bit more readable).


P.S. I hope that isn't actually your password for root.

my $dbh = DBI->connect("DBI:mysql:database=nagios;host=localhost", "root", "1029qpwo", {'PrintError' => 0,'RaiseError' => 1}) or LEAVENOW{print STDERR "OK; The Bottom RPC Amp is@botamp\n"; exit(0)};

                                              
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by: nemws1Posted on 2009-08-27 at 21:47:50ID: 25205016

Sorry, that code looks messy all on one line.

Same code, better looking. ;-)

my $dbh = DBI->connect("DBI:mysql:database=nagios;host=localhost",
                       "root", "1029qpwo", {'PrintError' => 0,'RaiseError' => 1})
  or LEAVENOW{print STDERR "OK; The Bottom RPC Amp is@botamp\n"; exit(0);};
                                              
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by: jedblackPosted on 2009-08-27 at 22:01:17ID: 25205047

ahhh ...thanks so much - I just could not figure out how to write that *; exit(0);); part.

works wonderfully ...

[root@poll1 dev]# ./rpcampbottom rpc1
OK; The Bottom RPC Amp is 13.6  Amps

[root@poll1 dev]# echo $?
0

[root@poller1 dev]# service mysqld stop
Stopping MySQL:                                            [  OK  ]

[root@poll1 dev]# ./rpcampbottom rpc1
OK; The Bottom RPC Amp is 13.5  Amps

[root@poll1 dev]# echo $?
0
[root@poll1 dev]#


 

by: nemws1Posted on 2009-08-27 at 22:04:26ID: 25205055

Excellent. ;-)  Happy I could help.

20120131-EE-VQP-002

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