Re: [Mon-devel] Re: Best way to contribute

[David N. <vit...@cm...>]

--On Thursday, July 01, 2004 8:59 AM -0500 Tim Klein 
<tkp...@ti...> wrote:

>
> I don't know about any other site-specific mods you may have made,
> but the one you describe above certainly sounds to be of general
> interest.

Ok.  In the interest of figuring out our solution is reasonable for other 
people I'll give some more details.

The config file contains arbitrary variables, that can either apply to 
specific hostgroups, services, hostgroup & service pairs, or be default 
values.  In certain cases we even can provide per-machine settings. 
Examples of settings we use this for are: snmp community strings, database 
users & passwords, username & password for testing kerberos servers, paths 
to keytab files, etc.


Here's an example of the way it works.  The mon script has a block of code 
like this:

my %communities;
my $group=$ENV{MON_GROUP};
my $service=$ENV{MON_SERVICE};
my $cf;
$community ||= $opt{'community'};
if ($cf = new IO::File "</home/mon/etc/monitor-auth.cf") {
  while (<$cf>) {
    chomp;
    if (/^(\S+):readcommunity\s*=\s*(\S+)$/) {
      $communities{$1}=$2;
    }
  }
  $community ||= $communities{"$group:$service"};
  $community ||= $communities{"$group:*"};
  $community ||= $communities{"*:$service"};
  $community ||= $communities{"*:*"};

}

$community ||= 'public';


Then monitor-auth.cf contains entries like this:
hostgroup-x:*:readcommunity=foobar
hostgroup-y:*:readcommunity=qux
*:service-x:readcommunity=baz
hostgroup-y:service-x:readcommunity=abc
*:*:readcommunity=asdf


-David

David Nolan                    <*>                    vit...@cm...
curses: May you be forced to grep the termcap of an unclean yacc while
      a herd of rogue emacs fsck your troff and vgrind your pathalias!