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Re: Suggestion for future release


From: Scott Lackey
Subject: Re: Suggestion for future release
Date: Fri, 10 Mar 2006 17:50:53 -0500

    The granular per-host configuration solutions are always difficult with cfengine. I don't know that this should be a part of cfengine, as doing host configs does not scale any easier than system administration without cfengine at all.
     I've been trying to up a system where groupfile data is stored in a database and pulled via cfengine at the time of execution in order to centralize group membership data and facilitate reporting, which really doesn't exist right now. If I have time to finish it, it might be useful in solving some of the problems of keeping up with individual host configurations.


On 3/8/06, Marco van Beek < address@hidden> wrote:
Hi Everyone,

I have a suggestion for CFengine. It would be nice to be able to have a
plain text config file with variables, which could be read by a client
on a host by host, and/or class by class basis.

The data would be read in by CFEngine (probably set in cfagent.conf) and
would be available to all subsequent cf files being processed.

I did something a while ago because I wanted to read the same data in
Perl as PHP for a project I have been dabbling with.

Anyway, an example config plus working Perl code is below. It would save
me having to use complicated bash code to extract data from a plain text
file. I have a config file per host which means I can define each boxes
purpose outside of CFEngine, which makes it easier to maintain.

Cheers,

Marco


==============================================================
EXAMPLE CONFIG FILE
==============================================================

#######################################
# Cross language config file for SSiS #
#######################################
# Comments are allowed    #
# White space is allowed  #
# syntax is 'key = value' #
###########################

...

#########
# MySQL #
#########

mysql_server = localhost
mysql_datasource = dbi:mysql:ssis
mysql_database = ssis
mysql_username = ssis
mysql_password = ssis
mysql_palm_gluetable = PDA_Sync
mysql_ldap_gluetable = LDAP_Sync

########
# LDAP #
########

ou = ou=SSiS
dc = dc=supporting-role,dc=co,dc=uk
ldap_bindas = uid=ssis,ou=People,dc=supporting-role,dc=co,dc=uk
ldap_password = secret
ldap_server = localhost
ldap_port   = 389
ldap_version = 3

===============================================================
PERL CODE TO EXTRACT FROM CONFIG AND DUMP INTO ARRAY
================================================================
my %settings;
open(CONFIG,"/etc/ssis-config");
while(<CONFIG>)
         {
         chomp;                  # no newline
         s/#.*//;                # no comments
         s/^\s+//;               # no leading whitespace
         s/\s+$//;               # no trailing whitespace
         next unless length;     # Anything left?
         my ($var, $value) = split(/\s*=\s*/,$_, 2);
         $settings{$var} = $value;
         }
close CONFIG;

my $mysql_datasource            = $settings{"mysql_datasource"};
my $mysql_username              = $settings{"mysql_username"};
my $mysql_password              = $settings{"mysql_password"};
my $mysql_palm_gluetable        = $settings{"mysql_palm_gluetable"};
my $public_user                 = $settings{"public_user"};
my $Memo_user                   = $settings{"Memo_user"};
my $ToDo_user                   = $settings{"ToDo_user"};
my $Address_user                = $settings{"Address_user"};
my $Datebook_user               = $settings{"Datebook_user"};
==================================================================


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-Scott
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