mon not reporting on localhost

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Re: mon not reporting on localhost

On Thu, Dec 06, 2007 at 04:18:01PM -0700, Osburn, Michael wrote:
...
>    ### group definitions (hostnames or IP addresses)
>    hostgroup servers 127.0.0.1
>    watch servers
>        service http
>            interval 5m
>            monitor http.monitor
>            period wd {Mon-Fri} hr {7am-10pm}
>                alert mail.alert root <at> localhost
>                alertevery 1m
>            period wd {Sat-Sun}
>                alert mail.alert root <at> localhost
...

You need a blank line after every hostgroup definition, as described
in the mon man page:

 Hostgroup Entries
     Hostgroup entries begin with the keyword hostgroup, and are followed by
     a hostgroup tag and one or more hostnames or IP addresses, separated by
     whitespace.  The hostgroup tag must be composed of alphanumeric charac-
     ters, a dash ("-"), a period ("."), or an underscore  ("_").  Non-blank
     lines  following the first hostgroup line are interpreted as more host-
     names.  The hostgroup definition ends with a blank line. For example:

            hostgroup servers nameserver smtpserver nntpserver
                 nfsserver httpserver smbserver

            hostgroup router_group cisco7000 agsplus

RE: mon not reporting on localhost

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RE: mon not reporting on localhost

On Fri, 7 Dec 2007, Osburn, Michael wrote:

> Here is the latest configuration file on the server. Accordign to mon.cgi service http is still showing up
as unchecked.
>
> Thanks for looking this over

Apply this diff to the file "mon" from mon-1.2.0, then try it again and have a
look at your /var/log/messages for a complaint about not being able to find
http.monitor.

--- mon	2007-06-06 07:46:19.000000000 -0400
+++ /home/trockij/mon/1.2/mon	2007-12-07 12:49:50.000000000 -0500
 <at>  <at>  -4,7 +4,7  <at>  <at> 
 #
 # Jim Trocki, trockij <at> arctic.org
 #
-# $Id: mon,v 1.22.2.2 2007/06/06 11:46:19 trockij Exp $
+# $Id: mon,v 1.22.2.3 2007/12/05 17:54:55 aschwer Exp $
 #
 # Copyright (C) 1998 Jim Trocki
 #
 <at>  <at>  -25,9 +25,9  <at>  <at> 
 #
 use strict;
 
-my $RCSID='$Id: mon,v 1.22.2.2 2007/06/06 11:46:19 trockij Exp $';
+my $RCSID='$Id: mon,v 1.22.2.3 2007/12/05 17:54:55 aschwer Exp $';
 my $AUTHOR='trockij <at> arctic.org';
-my $RELEASE='$Name: mon-1-2-0-release $';
+my $RELEASE='$Name:  $';
 
 #
 # NetBSD rc.d script compatibility
 <at>  <at>  -5392,11 +5392,13  <at>  <at> 
 
 no warnings; # Redefining syslog
 sub syslog {
-   eval {
-       local $SIG{"__DIE__"}= sub { }; 
-       my  <at> log = map { s/\%//mg; }  <at> _;
-       Sys::Syslog::syslog( <at> log);
-   }
+    return if (! <at> _);
+
+    my $pri = ( <at> _ == 1) ? "err" : shift;
+
+    eval { Sys::Syslog::syslog ($pri, '%s', " <at> _"); };
+
+    print STDERR "syslog error: $ <at> \n" if ($ <at>  ne "");
 }
 use warnings;
 

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RE: mon not reporting on localhost

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RE: mon not reporting on localhost

On Fri, 7 Dec 2007, Osburn, Michael wrote:

> Thanks for the patch. Not sure what caused the issue but when I
> replaced the mon executable with the one from 1.2.0 (patch applied)
> I started getting alerts upon reload. I have seen about 5 errors show
> up in the logs stating

> Dec  7 13:03:23 localhost mon[13490]: no monitor found while trying
> to run [http.monitor]

Yes, this means it didn't find http.monitor in either the default place or the
place where you told it to look.

If you start mon like "./mon -d -c /path/to/mon.cf" it will dump out the list
of places it's looking. The directory you're looking for is labeled "mondir" in
the config file, and usually it's something like "/usr/lib/mon/mon.d". In the
"-d" debug output it is incorrectly labeled "scriptdir" (which I just noticed).

You can either just copy your http.monitor into the place it's looking, or
better yet, just make the "mondir" path point to the "mon.d" directory that
comes with mon.

When mon starts up or is told to reload its configuration, it looks for every
"monitor" and "alert" in your config in the "mondir" and "alertdir" paths,
respectively. You can specify multiple directories separated by a colon, like
"mondir = /usr/local/mystuff/mon.d:/usr/lib/mon", and you'd put your own
homebrew or site-specific monitors in "/usr/local/mystuff/mon.d", where
it will look first before looking in the other location.

RE: mon not reporting on localhost

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Using depend ...

I added "depend ...." lines to some of my services in my mon.cf, and 
also "dep_behavior = hm"
I am using mon-1.2.0 where I added
    use strict;
    use warnings;
for debugging purpose.

I get
   Use of uninitialized value in concatenation (.) or string at 
/symlnks/common/dsnmon/2.0/mond line 5324
This happens at
    } elsif ($watch{$group}->{$service}{"_last_failure_time"} >= (time - 
$watch{$group}->{$service}{"dep_memory"})) {
, it seems that $watch{$group}->{$service}{"_last_failure_time"} is 
undefined.

The unix command "grep _last_failure_time mon"
            $depval = $SUCCESS{$sref->{"_op_status"}} && 
($sref->{"_last_failure_time"} < (time - $sref->{"dep_memory"}));
                      && ($sref->{"_last_failure_time"} < (time - 
$sref->{"dep_memory"}));
        } elsif ($watch{$group}->{$service}{"_last_failure_time"} >= 
(time - $watch{$group}->{$service}{"dep_memory"})) {

shows that    $sref->{"_last_failure_time"}     is used but never set !!!!.

Re: Using depend ...

On Mon, 10 Dec 2007, Jacques Klein wrote:

> also "dep_behavior = hm"
> I am using mon-1.2.0 where I added

>
> shows that    $sref->{"_last_failure_time"}     is used but never set !!!!.
>

Try this patch and let me know if it helps:

--- mon	2007-12-10 13:35:43.000000000 -0500
+++ mon-dep	2007-12-10 13:38:48.000000000 -0500
 <at>  <at>  -1392,6 +1392,7  <at>  <at> 
  		$sref->{"_start_of_monitor"} = time if (!defined($sref->{"_start_of_monitor"}));
  		$sref->{"_alert_count"} = 0 if (!defined($sref->{"_alert_count"}));
  		$sref->{"_last_failure"} = 0 if (!defined($sref->{"_last_failure"}));
+		$sref->{"_last_failure_time"} = 0 if (!defined($sref->{"_last_failure_time"}));
  		$sref->{"_last_success"} = 0 if (!defined($sref->{"_last_success"}));
  		$sref->{"_last_trap"} = 0 if (!defined($sref->{"_last_trap"}));
  		$sref->{"_last_traphost"} = '' if (!defined($sref->{"_last_traphost"}));
 <at>  <at>  -3287,6 +3288,7  <at>  <at> 
  	$sref->{"_failure_count"}++;
  	$sref->{"_consec_failures"}++;
  	$sref->{"_last_failure"} = $tmnow;
+	$sref->{"_last_failure_time"} = $tmnow; # used by the "dep_memory" option
  	if ($sref->{"_op_status"} == $STAT_OK ||
  		$sref->{"_op_status"} == $STAT_UNKNOWN ||
  		$sref->{"_op_status"} == $STAT_UNTESTED)

cisco_interface.monitor

Hi all,

Looking to see if anyone has updated the cisco_interface.monitor to work with "modern" perl
implementations.  I am by no means a perlmonger, so am 
just trying to use it to monitor my Cisco interfaces, but cannot seem to make it work no matter what version of
Net-SNMP that I install, so I figure 
that it is probably written for an older version of Net-SNMP and is having "backwards compatibility"
issues.  Namely, the script complains of the 
unavailability of SNMP::Session (or SNMP/Session.pm), which does not seem to exist in the newer versions
of Net-SNMP.

Has anyone else been able to overcome this problem?  If so, how?  I really would like to use Mon to watch my
interfaces, possibly as a replacement for 
HP's OpenView Network Node Manager, if possible.

Thanks for any input that you can give!