Let me apologize in advance for being dense.
When I manage systems- I organize them into hierarchies.
All my systems share certain global bits in common- NTP servers or the
root domain name for example.
All the systems within a given site or environment share other bits in
common- LDAP servers, a sub domain, default routes, etc. Specific
sites may even override some of the global settings- for example a
local NTP server for a mission critical site.
Then I have servers within those sites that once again might override
the more general site or global settings. The NTP master for a site is
not going to use itself as a server- it should use a higher precision
clock from somewhere else. There may be a special ldap base for the
research department, etc.
I can find no good way in puppet to create these sorts of hierarchies.
If I defined base nodes and try to inherit values- puppet is
declarative so later values do not get imported.
If I define classes for global, then site, then system and try to do
something like:
node ntpserver {
$ntp_master = "accurate.example.com"
include site::nyresearch
include site::global
}
None of the values set in nyresearch will be available to classes in
global because of scoping rules.
How are folks making this work? Have I completely missed a totally
awesome feature or language keyword somewhere along the line? Are
there fun tricks with inheritance that I am missing?
Explanations or links to good docs would be greatly appreciate.
If I'm trying to go about this all wrong and someone can explain the
error of my ways, that too would be appreciated.
-Don
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