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Verdad


	Verdad is "truth" in Spanish
		use it to define the "true state" of your network
		use "Verdad clients" to apply the "true state" to your servers

%% TALKING POINT:
%%
%% This is like the concept of "convergent scripting"
%% in "An Expectant Chat about Script Maturity", Alva Couch,
%% from LISA 2000.

	Gives you the tools you need to build a comprehensive configuration database
		multiple inheritance
		versioning
		easy data import/export

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Architecture


	Keep it Simple!
		mysql database holds data
		perl tools control putting data in
		mod_perl implements a little user interface
		publish data to Verdad clients via simple HTTP interface

	Verdad is just a place to put data
		Verdad does not control servers
		Verdad clients do the heavy lifting by actually making config files based on the data they fetch from Verdad

	Clients "control" the schema
		Verdad does not enforce a schema on the data

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Things Verdad controls at Tellme


	IP addressing (DNS and DHCP)
	Software Deployment
	NTP client and server config
	DNS resolver configuration
	MySQL replication
	SSH access control
	Postfix
	Netsaint configs

%% TALKING POINT:
%%
%% When jra was working on machines in a new datacenter
%% he was surprised to find some other machine connecting
%% to it while he was debugging. What had happened was that
%% the NMS had autoconfigured itself via Verdad and started
%% monitoring it before jra expected it!
%%
%% That's an example of the system working right!

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Data Format


	A Verdad item is a set of tag/value pairs
	Values are either single strings, or lists of strings

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item verdad-slave-tunneled
  comment = "The connection information needed by MySQL on a Verdad slave that's using an SSH tunnel."
  is = verdad-slave
  mysqld-master-host = localhost
  mysqld-master-port = 33060
  gratuitous-list = ( value-1 value-2 )
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Availability


	Released under the Artistic license on SourceForge

	Two example clients are available
		MySQL replication
		NTP client and server config

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Jeff Allen 
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<jra@users.sourceforge.net>
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http://verdad.sourceforge.net