How can i execute a single class from my puppet manifest file

Question

I have a manifest file that's a bit huge. Is there anyway that i can run a single class from the manifest file?

Answer 1

You can execute a subset of resources with the --tags argument. However, you first have to set the associated tag in the resources you want executed for that tag. 

If you wanted to execute only one class, then you can set a tag for that class and specify that tag as the argument to --tags to execute only that class.

 you could refer to: https://docs.puppet.com/puppet/4.10/lang_tags.html

In this case, the tag function will be much more useful for you than the metaparameter.

https://docs.puppet.com/puppet/4.10/lang_tags.html#the-tag-function

# You can use the tag function inside a class definition or defined type to assign tags to the surrounding container and all of the resources it contains
class myClass {
  tag 'mytag'
  ...
}

You can then execute only myClass:

# execute agent with tags
puppet agent -t --tags mytag

https://docs.puppet.com/puppet/4.10/lang_tags.html#restricting-catalog-runs