问题
I am setting up my Puppet code using Hiera such that if a value is not found in Hiera, it assigns a default value to it. I am not getting the desired results and wanted to know how others did it :
lookup( <NAME>, [<VALUE TYPE>], [<MERGE BEHAVIOR>], [<DEFAULT VALUE>] )
I think I found the answer https://www.devco.net/archives/2016/03/13/the-puppet-4-lookup-function.php , will try it shortly
lookup({"name" => "some::thing", "default_value" => "default"})
回答1:
The solution that worked for me was :
$myvar1 = lookup( { "name" => "myvar1", "default_value" => "default" } )
回答2:
Generally , if the value logpath is declared in hiera . Puppet manifest will pick up the value automatically .If it is not found in Hiera , then puppet agent will error out saying that value is not found .
If the value is not declared in Hiera , there is always a way where in one can declare the value in puppet manifest . if the value is not find in Puppet Hiera , then manifest is looked into for the puppet value .
As a good practice , value is declared in hiera and as well as puppet manifest .If the value is not found in Hiera , puppet will look into variable present in manifest
来源：https://stackoverflow.com/questions/44606675/how-to-setup-a-default-hiera-lookup-value