HDFS : never change replication factor with snapshot
You use hdfs and for some reasons you want to change replication factor from 3 to 2 for a specific directory ?
Running a Role handler from a playbook
If you are well organized you have multiple roles to manage you deployment and configuration If you know the Ansible handler power you use it to manage all the operations on your software, services and so on. It is simple to trigger a handler inside a role task, but have you ever imagined using the…