Re: [Netdisco] Multiple Netdisco Front Ends

[<pe...@go...>]

I set up multiple frontends/databases once so it can be made to 
work. It was at my previous employer though so the following is off 
the top of my head - let us know what doesn't work out...

On 09/12/2010 23:12, Bill Anderson wrote:
> I created a new database for a second Netdisco instance, and can
> successfully discover devices and populate the second database tables.

Okay it looks like you have netdisco.conf and netdisco_dese.conf. I 
assume the netdisco.conf and netdisco_dese.conf files are identical 
apart from the database connection details and perhaps the variables 
used only for backend polling (ignore_* etc).

We'll start with the Apache2 configuration...


# You do need to replicate most items for each frontend you have.

Alias /netdisco      "/usr/share/netdisco/html"
Alias /netdisco_dese "/usr/share/netdisco/html"

# I implemented some of this using LocationMatch to save repetition.

<LocationMatch "/netdisco(_dese)?">
   Options +Indexes
</LocationMatch>

# Note that I've moved the PerlSetVar here inside the LocationMatch:

# Turn on MASON for .html documents
<LocationMatch "/netdisco/.*\.html$">
   SetHandler perl-script
   PerlSetVar site "netdisco"
   PerlHandler netdisco::Mason
</LocationMatch>

# Turn on MASON for .html documents
<LocationMatch "/netdisco_dese/.*\.html$">
   SetHandler perl-script
   PerlSetVar site "netdisco_dese"
   PerlHandler netdisco::Mason
</LocationMatch>

# We can save space again with a change to the LocationMatch:

# Decline access to mason internals
<LocationMatch "/netdisco(_dese)?/.*(\.mc|autohandler|dhandler)$">
   SetHandler perl-script
   PerlInitHandler Apache::Constants::NOT_FOUND
</LocationMatch>


Next up the MASON conf...


# We only need one of these stanza, so pick either config file.
# Whichever file you pick will set things like the network map type.

{ package HTML::Mason::Commands;
   use netdisco qw/:all/;
   &netdisco::config('/etc/netdisco/netdisco.conf');
}

# Now we set up one Mason Session Handler for each frontend
# the customized items are:
#   the package name
#   session_cookie_name
#   session_data_source (i.e. db name)
# Also you will see two variables have been added to the handler()
#   webpath
#   db_Pg (same as the session_data_source)

# Setup Mason and Session Handler
{ package netdisco::Mason;
   use HTML::Mason;
   use HTML::Mason::ApacheHandler;
   use strict;

   my $ah = new HTML::Mason::ApacheHandler(
     args_method => 'mod_perl',
     comp_root => '/usr/share/netdisco/html',
     data_dir => '/var/lib/netdisco/mason',
     request_class => 'MasonX::Request::WithApacheSession',
     session_class => 'Apache::Session::Postgres',
     session_commit => 1,
     session_use_cookie => 1,
     session_cookie_expires => '+1y',
     session_cookie_name => 'netdisco',

     session_data_source => 'dbi:Pg:dbname=netdisco',
     session_user_name => 'netdisco',
     session_password => 'dbpassword',
   );

   sub handler {
     my $request = shift;
     $netdisco::CONFIG{webpath} = '/netdisco';
     $netdisco::CONFIG{db_Pg} = 'dbi:Pg:dbname=netdisco';
     return $ah->handle_request($request);
   }
}

# Setup Mason and Session Handler
{ package netdisco_dese::Mason;
   use HTML::Mason;
   use HTML::Mason::ApacheHandler;
   use strict;

   my $ah = new HTML::Mason::ApacheHandler(
     args_method => 'mod_perl',
     comp_root => '/usr/share/netdisco/html',
     data_dir => '/var/lib/netdisco/mason',
     request_class => 'MasonX::Request::WithApacheSession',
     session_class => 'Apache::Session::Postgres',
     session_commit => 1,
     session_use_cookie => 1,
     session_cookie_expires => '+1y',
     session_cookie_name => 'netdisco_dese',

     session_data_source => 'dbi:Pg:dbname=netdisco_dese',
     session_user_name => 'netdisco',
     session_password => 'dbpassword',
   );

   sub handler {
     my $request = shift;
     $netdisco::CONFIG{webpath} = '/netdisco_dese';
     $netdisco::CONFIG{db_Pg} = 'dbi:Pg:dbname=netdisco_dese';
     return $ah->handle_request($request);
   }
}