Set up the jerakia.yaml configuration file as follows:

$ mkdir /etc/jerakia
$ vim /etc/jerakia/jerakia.yaml

This is the simplest configuration:

--- 
policydir: /etc/jerakia/policy.d 
logfile: /var/log/jerakia.log 
loglevel: info 
eyaml:   
 private_key: /etc/puppetlabs/puppet/eyaml/private_key.pkcs7.pem         
 public_key: /etc/puppetlabs/puppet/eyaml/public_key.pkcs7.pem

If you intend to use encryption, you should also provide the keys in the private_key and public_key settings as indicated.