Conditional variable references

[Adam Bishop]

I store some settings like the redis password, and localhost shared secrets as variables, i.e.:

    ldap {
      ...
      identity = ${bind_dn}
      ...
    }

as I'm running a single set of configuration shared across 3 different sets of servers, with a file called 'variables' generated by puppet that contains the instance specific settings.

Is there any way to have a default value for these kinds of variables so I don't have to populate unused ones with dummy values? Or to have the server ignore missing variable references?

I tried instantiating the variables as empty strings, then redefining them like:

    # cat /etc/raddb/radius.conf
    ...
    $INCLUDE defaults
    $INCLUDE variables 
    ...

    # cat /etc/raddb/defaults
    ...
    bind_dn = ""

    # cat /etc/raddb/variables
    ...
    bind_dn = "dc=jisc,dc=ac,dc=uk"

Which loaded without error, but returned an empty string.

Adam Bishop

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